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HomeMy WebLinkAboutASRPC20220712 - 05.1 PLANNING COMMISSION STAFF REPORT 5.1 TO: Chair and Planning Commission July 12, 2022 SUBJECT: Resolution No. 2022-13, approving Development Plan request DEV21-0006, Tree Removal permit TR22-0039, and an Addendum to a previously approved Final Environmental Impact Report allowing for the development of a 57-unit senior condominium project on a 1.88 acre site located at 359 & 375 West El Pintado Road. DESCRIPTION The proposed project consists of the development of two separate parcels totaling 1.88 acres. The property owner is GMMR LLC, and the applicant is Diamond Construction Inc. The Development Plan would provide for the approval of a Condominium Map allowing for the subdivision of the site into 57 condominium lots, project architecture, site design, and landscape design. A Tree Removal permit (TR22-0039) is also required to allow for the removal of nine Town-protected trees. This application seeks approval of a 20 percent Density Bonus pursuant to the State Density Bonus Law (SDBL). Based on the site’s General Plan land use designation, the maximum units count for the site would be 47 units. The proposed 20 percent density bonus results in a maximum unit count of 57. Under the SDBL, a development that is age restricted to seniors qualifies the project for the 20 percent density bonus. BACKGROUND A General Plan Amendment, P-1; Planned Unit Development District rezoning, and Final Development allowing for a 37-unit townhouse development was recommended for approval by the Planning Commission and approved by the Town Council in January 2019. This approval is still valid but has not been exercised. Development Plan applications allowing the development of approximately 30,000 square foot office buildings on the site were approved in 1989 and 1999, but these entitlements have lapsed. The subject site is one of the last remaining vacant sites within the El Cerro Study Area, a 68-acre area of mixed office and multifamily residential development that was the subject of a 1986 General Plan Amendment. DEV21-0006 – West El Pintado 2 July 12, 2022 The proposed project architecture consists of three story residential condominium buildings. The proposed project includes one, two, and three bedroom units, ranging in size from 657 to 1,657 square feet in size. The project architecture and landscape design were reviewed by the Design Review Board (DRB) on December 16, 2021 and was recommended for approval. The project that was reviewed by the DRB was for a total of 54 units. Since that time the applicant has added three additional units to the northern building. The additional units did not result in any substantial modifications to the exterior appearance of the building. EVALUATION/DISCUSSION Conformance with General Plan The larger 1.59 acre parcel has a General Plan land use designation of Mixed Use. The Mixed Use designation allows office and multiple family uses. Most of the site is also included as a Special Concern Area within the General Plan. The Special Concern Area language specifies that residential development of the site should be within the 20-25 units per acre range. As a result of the requested density bonus, the proposed development has a density of 30 units per acre. Conformance with Zoning District The site was rezoned to P-1; Planned Unit Development District as part of the previous project. While this P-1 district was related to the previous 37-unit approval, under State law the Town cannot require a new P-1 rezoning. Environmental Impact Report A Final Environmental Impact Report (FEIR) was certified for the previously approved development. Since environmental conditions related to several areas of study within the EIR are subject to change with time, an Addendum to the previously certified FEIR has been prepared (Attachment C). A revised Initial Study of Environmental Significance, which is included in the Addendum, found that all section of the previous FEIR, and related mitigation measures remain valid, except for the Biological Resources and Transportation sections. As a result, new analysis of potential environmental impacts in these areas have been prepared and are included in the Addendum. For potential biological impacts, the report found that the project would have a less than significant impacts with the incorporation of mitigation measures. The applicant has DEV21-0006 – West El Pintado 3 July 12, 2022 worked extensively with the California Regional Water Quality Control Board on mitigation for disturbance the existing drainage swale that runs through the site. Extensive on-site mitigation is proposed, creating a much larger open space area than the previous project. For potential traffic impacts, the report found that the project would have less impacts than the previously approved project, while there are more units than previously approved, the proposed senior population generates fewer trips than would have been generated by the previous project. Parking Based on SDBL, the Town may not require more than one parking space per unit for one- bedroom unit and one and one-half parking space per unit for two and three bedroom units. As a result, the total parking requirement for the development is 72 spaces. The project would provide 72 on-site parking spaces within the ground floor parking garage. Approximately 10 additional parking spaces would be available along the project’s street frontage. The parking garage includes 57 storage units, one for each residence. Site Design and Architecture The Town believes that the proposed development is a significant improvement over the previously approved project. The previous project included seven separate buildings which occupied most of the site. The proposed project includes one main building and two smaller buildings. The front of the main building is excavated into the berm along the West El Pintado, resulting in an effective height of 22 feet. The southern building along West El Pintado also has a maximum width of 22 feet. The overall project has a maximum building height of 33 feet. Because of the on-site mitigation requirements imposed by the California Regional Water Quality Control Board, approximately 18% of the site would be developed as a wetland mitigation area. This area will serve as a visual open space area for the residents. Housing Needs The previously approved 37 unit Townhouse project has a resulting density of 20 units per acre. As proposed, the subject project would have a density of over 30 units per acre, which is the minimum density that the State Housing and Community Development will accept for the development to qualify as low or very low income units for Housing Element Regional Housing Needs Allocation (RHNA) purposes. As a result, the proposed development would contribute towards meeting the Town’s low and very low income RHNA assignment for the next eight year housing cycle. DEV21-0006 – West El Pintado 4 July 12, 2022 PUBLIC CONTACT Public notice of the July 12, 2020 meeting was mailed to property owners within 750 feet of the site. A total of 141 notices were mailed to surrounding property owners. Posting of the meeting agenda serves as notice to the general public. RECOMMENDATION Adopt Resolution No. 2022-13, approving Development Plan request DEV21-0006, Tree Removal permit TR22-0039, and an Addendum to a previously approved Final Environmental Impact Report allowing for the development of a 57-unit senior condominium project on a 1.88 acre site located at 359 & 375 West El Pintado Road. Prepared by: David Crompton Chief of Planning Attachments: A - Resolution No. 2022-13 B – Public Notification, Notification Map and Notification List C - Addendum to the Previously Approved Final Environmental Impact D – Mitigation Monitoring and Reporting Program E - Letters Received as of July 8, 2022 F – Project Civil Drawing, Architectural, Mitigation Plan, and Landscape Plans RESOLUTION NO. 2022-13 APPROVING DEVELOPMENT PLAN REQUEST DEV21-0006, TREE REMOVAL REQUEST TR22-0039, AND AN ADDENDUM TO A PREVIOUSLY APPROVED FINAL ENVIRONMENTAL IMPACT REPORT ALLOWING THE DEVELOPMENT OF A 57-UNIT SENIOR CONDOMINIUM PROJECT ON A 1.88 ACRE SITE LOCATED AT 359 & 375 WEST EL PINTADO ROAD APN: 200-140-011, 012 WHEREAS, GMMR LLC (Owner) and DIAMOND CONSTRUCTION, INC. (Applicant) have requested approval of a Development Plan application to construct a 57-unit senior condominium project; and WHEREAS, a Tree Removal permit (TR22-0039) is requested to allow the removal of nine Town-protected trees; and WHEREAS, the site is located at 375 & 359 West El Pintado Road, and further identified as APNs: 200-140-011, 012; and WHEREAS, an Addendum to a previously certified Final Environmental Impact Report (FEIR) related to the approval of a previous development application (General Plan Amendment GPA2015-0001, Preliminary Development Plan – Rezoning PUD2015-0001, Major Subdivision, and a Final Development Plan DP2015-0065) has been prepared for the project; and WHEREAS, pursuant to the State Density Bonus Law, a 20 percent density bonus is proposed for the project, extending the overall unit density of the development from 25 to 30 units per acre in exchange for the provision of a 100 percent age restricted senior housing development; and WHEREAS, the previously certified FEIR and Addendum have found that the proposed project would not have any significant environmental impacts with the incorporation of recommended mitigation measures; and WHEREAS, all recommended mitigation measures have been included as recommended conditions of approval for the project; and WHEREAS, a staff report was prepared recommending that the Planning Commission approve the requests; and WHEREAS, public notification for the public hearing to consider this proposal was provided consistent with all requirements of the law; and ATTACHMENT A PAGE 2 OF RESOLUTION NO. 2022-13 RESOLVED, that the Planning Commission of the Town of Danville approves Development Plan request DEV21-0006, Tree Removal permit TR22-0039, and an Addendum to a previously approved Final Environmental Impact Report allowing for the development of a 57-unit senior condominium project on a 1.88 acre site located at 359 & 375 West El Pintado Road. FINDINGS OF APPROVAL Final Development Plan – Major Subdivision 1.The proposed subdivision is in substantial conformance with the goals and policies of the Danville 2030 General Plan and the site’s Mixed Use land use designation which allows multiple family residential development in the range of 20-25 units per acre. 2.The design of the proposed subdivision is substantially in conformance with the site’s P-1; Planned Unit Development District. The P-1; Planned Unit Development District is listed as a consistent zoning designation under the site’s General Plan Mixed Use land use designation. 3.The design of the subdivision and the type of associated improvements will not likely cause serious public health problems, because water and sanitary facilities and services will be available to the parcels. The project has been reviewed by the San Ramon Valley Fire Protection District, Central Contra Costa County Sanitary District, East Bay Municipal Utility District, and the Town’s Building Division and it was determined that the site is adequately served by public facilities and services. In addition, the previously certified FEIR and the revised Initial Study of Environmental Significance prepared for the project did not find any potential significant impacts related to the provision of public services. 4.The density of the development is physically suitable for the subject site and surrounding neighborhood because the proposed development is similar in size and density to the residential development adjacent to the site to the west, and is compatible on scale to the commercial development to the north and east. The project provides for an adequate buffer and transition to the single family residential area to the south. 5.The design of the proposed subdivision and improvements are not likely to cause substantial environmental damage or subsequently injure fish or wildlife or their habitat, in part because the project site is an area where development has previously occurred. Biological resources were reviewed as part of the previously certified FEIR prepared for the project and found that the development would not PAGE 3 OF RESOLUTION NO. 2022-13 have a significant impact on biological resources with mitigation incorporated. 6. The design of the proposed subdivision and proposed improvements would not conflict with easements, acquired by the public at large, for access through or use of property within the proposed subdivision. There are currently no existing public easements for access through or use of the subject properties. Tree Removal Permit The project as proposed would remove 43 trees. Of the 43 trees to be removed, nine trees have been determined to be protected trees under the provision of the Town’s Tree Preservation Ordinance. The findings below address only the nine trees designated as protected under the Town’s Tree Preservation Ordinance. The previously approved FEIR and the Addendum to the FEIR for the project analyzes the potential environmental impacts for all the tree to be removing, whether or not they are designated as protected. 1. Necessity. The primary reason for removal of the Town-protected trees is that preservation of those trees would be inconsistent with the proposed residential development of the property, including the creation of a new roadway system and grading to create residential development pads. 2. Erosion/surface water flow. Removal of the Town-protected trees will not cause significant soil erosion or cause a significant diversion or increase in the flow of surface water. 3. Visual effects. With respect to other trees in the area, the project site contains a significant number of additional trees, including additional Town-protected Oak trees that would not be removed for the project. In addition, the project proponent will be required to replace all Town-protected trees to be removed with trees of an approved species and of a cumulative number and diameter necessary to equal the diameter of the tree(s) which have been approved for removal in accordance with the Town’s Tree Preservation Ordinance. Tree replacement will be conducted in accordance with the Town’s requirements, including planting a mixture of small and large box trees to meet the cumulative diameter number of the removed trees. The project proponent will also be required to replace all non-ordinance-species or size trees (i.e., trees less than 10 inches in diameter for single-trunk trees or less than 20 inches in diameter for multi-trunk trees) at a replacement-to-removal ratio of 1:1. Removal of the 43 trees, including nine Town-protected trees, will not significantly affect off-site shade or adversely affect privacy between properties due to the site’s topography, the other trees that would remain, and the locations of the trees in PAGE 4 OF RESOLUTION NO. 2022-13 relation to other properties. CONDITIONS OF APPROVAL Conditions of approval with an asterisk (*) in the left-hand column are standard project conditions of approval. Conditions of approval typed in italicized text are mitigation measures derived from the Final Environmental Impact Report prepared for the project. Unless otherwise specified, the following conditions shall be complied with prior to the Town Council approval of the initial final map issuance of a building permit for the project. Each item is subject to review and approval by the Planning Division unless otherwise specified. A. GENERAL 1. Development Plan request DEV21-0006, Tree Removal permit TR22-0039, and an Addendum to a previously approved Final Environmental Impact Report allowing for the development of a 57-unit senior condominium project on a 1.88 acre site located at 359 & 375 West El Pintado Road. Development shall be substantially as shown on the project drawings as follows, except as may be modified by conditions contained herein; a. Preliminary Architectural Plans, Elevations, and Floor Plans, and Landscape Plans consisting of 9 sheets, as prepared by Form4 Architecture and dated received by the Planning Division on June 28, 2022. b. Preliminary Landscape Plan consisting of 9 sheets, as prepared by Environmental Foresight, Inc. dated received by the Planning Division on June 28, 2022. b. Vesting Tentative Map for Condominium purposes and Civil Drawings consisting of six sheets, as prepared by Talus Engineering and dated received by the Planning Division on June 28, 2022. c. Final Environmental Impact Report Addendum prepared by WRA, Inc., dated June, 2022. d. Preliminary Stormwater Control Plan as prepared by Talus Engineering, consisting of 13 sheets, dated prepared on June 6, 2022. PAGE 5 OF RESOLUTION NO. 2022-13 e. Mitigation Grading Plan and Planting Plan, as prepared by WRA Environmental Consultants, consisting of two sheets, dated received by the Planning Division on June 28, 2022. 2. The following fees are due at final map approval for the above-mentioned development: a. Map Check Fee............ TBD b. Improvement Plan Check Fee........... %3 of cost estimate c. Engineering Inspection Fee............... %5 of cost estimate d. Grading Plan Check, Inspection & Permit................ TBD e. Base Map Revision Fee (based on (parcels)........ TBD f. Park Land in Lieu Fee (based on units).. $ 719,967 g. Excavation Mitigation Fee (SR)......................... $ 7, 030.00 The following fees are due at building permit issuance: a. Child Care Facilities Fee.................................... $ 115/unit b. Finish Grading Inspection Fee................. $ 198/building c. Stormwater Pollution Program Fee........ $ 228/building d. SCC Regional Fee............................................. $ 1,676/unit e. SCC Sub-Regional Fee..................................... $ 4,624/unit f. Residential TIP Fee.......................................... $ 1,400/unit g. Tri-Valley Transportation Fee................ $ 3,890/unit* 3. Prior to issuance of building permits, the developer shall reimburse the Town for notifying surrounding residents and interested parties of the public hearings and study sessions for the project. The fee shall be $344.00 ($110.00 + 141 notices X $0.83 per notice X 2 notifications). * 4. Prior to the issuance of grading or building permits, the applicant shall submit written documentation that all requirements of the San Ramon Valley Fire Protection District (SRVFPD) and the San Ramon Valley Unified School District have been, or will be, met to the satisfaction of these respective agencies. * 5. The applicant shall submit to the Town of Danville fees required to file a Notice of Determination for this project as required by AB 3185. The fee shall be $3,271. This check shall be made payable to the Contra Costa County Recorder’s Office and shall be submitted to the Town within five days of project approval. PAGE 6 OF RESOLUTION NO. 2022-13 6. Prior to the commencement of ground disturbance, including site preparation and grading activities, the applicant will ensure that all construction workers are trained to recognize archaeological resources (e.g., obsidian and chert flakes and chipped stone tools; grinding and mashing implements such as slabs and handstones, and mortars and pestles; bedrock outcrops and boulders with mortar cups; and locally darkened midden soils containing some of the previously listed items plus fragments of bone, shellfish, and fire affected stones; fragments of glass, ceramic, and metal objects; milled and split lumber; and structure and feature remains such as building foundations and discrete trash deposits). The cultural resources awareness training shall be conducted by a qualified professional archaeologist with experience in training non-specialists. A record of completion of cultural resources awareness training for all construction workers shall be submitted to the Town of Danville prior to the issuance of a grading permit, and a copy of the training completion record shall be maintained onsite for the duration of construction activities. 7. If previously unidentified cultural resources are encountered during construction or land disturbance activities, work shall stop within 50 feet of the find and the Town of Danville shall be notified at once to assess the nature, extent, and potential significance of any cultural resource find. The applicant shall retain a qualified archaeologist to implement a Phase II subsurface testing program to determine the resource boundaries, assess the integrity of the resource, and evaluate the resource’s significance through a study of its features and artifacts. If the resource is determined significant, the Town of Danville may choose to allow the capping of the area containing the resource using culturally sterile and chemically neutral fill material. If such capping occurs, then a qualified archaeologist shall be retained to monitor the placement of fill upon the resource. If a significant resource will not be capped, the results and recommendations of the Phase II study shall determine the need for a Phase III data recovery program designed to record and remove significant cultural materials that could otherwise be tampered with. If the resource is determined to be not significant, no capping and/or further archaeological investigation or mitigation shall be required. The results and recommendations of the Phase II study shall determine the need for construction monitoring. If monitoring is warranted, a qualified archaeologist shall be retained by the applicant to be present during all earth moving activities that have the potential to affect archaeological or historical resources. A monitoring report shall be submitted to the Town upon completion of construction. 8. If previously unidentified human remains are encountered during project construction, State Health and Safety Code Section 7050.5 shall be adhered to, which requires that no further disturbance shall occur until the County Coroner has made the necessary findings as to origin and disposition pursuant to Public Resources Code Section 5097.98. If the remains are determined to be of Native American descent, the coroner has 24 hours to notify the NAHC. The NAHC would then identify the person(s) thought to be the Most Likely Descendent (MLD) of the PAGE 7 OF RESOLUTION NO. 2022-13 deceased Native American, who would then help determine what course of action should be taken in dealing with the remains. * 9. Construction activity shall be restricted to the period between the weekday hours of 7:30 a.m. to 5:30 p.m. (Monday through Friday), unless otherwise approved in writing by the City Engineer for general construction activity and the Chief Building Official for building construction activity. 10. At a minimum, all on-site structures shall include the following to achieve an acceptable interior noise level: • Air conditioning or a mechanical forced–air ventilation system so that windows and doors may remain closed • Double-paned windows and sliding glass doors mounted in low air infiltration rate frames (0.5 cubic feet per minute, per ANSI specifications) • Solid core exterior doors with perimeter weather stripping and threshold seals • Roof and attic vents facing away from I-680 11. The applicant shall apply the following measures during construction of the project. • Construction Staging. The contractor shall provide staging areas on-site to minimize off-site transportation of heavy construction equipment. These areas shall be located to maximize the distance between activity and sensitive receptors. This would reduce noise levels associated with most types of idling construction equipment. • Mufflers. Construction equipment shall be properly maintained and all internal combustion engine driven machinery with intake and exhaust mufflers and engine shrouds, as applicable, shall be in good condition and appropriate for the equipment. During construction, all equipment, fixed or mobile, shall be operated with closed engine doors and shall be equipped with properly operating and maintained mufflers, consistent with manufacturers’ standards. • Electrical Power. Electrical power, rather than diesel equipment, shall be used to run compressors and similar power tools and to power any temporary structures, such as construction trailers or caretaker facilities. • Equipment Staging. All stationary equipment shall be staged as far away from the adjacent multi-family residential development as feasible. • Equipment Idling. Construction vehicles and equipment shall not be left idling for longer than five minutes when not in use. • Workers’ Radios. All noise from workers’ radios shall be controlled to a point that they are not audible at sensitive receptors near construction activity. • Smart Back-up Alarms. Mobile construction equipment shall have smart back-up alarms that automatically adjust the sound level of the alarm in response to ambient noise levels. Alternatively, back-up alarms shall be disabled and PAGE 8 OF RESOLUTION NO. 2022-13 replaced with human spotters to ensure safety when mobile construction equipment is moving in the reverse direction. • Disturbance Coordinator. The applicant shall designate a disturbance coordinator who shall be responsible for responding to any local complaints about construction noise. The noise disturbance coordinator shall determine the cause of the noise complaint (e.g., starting too early, bad muffler, etc.) and shall require that reasonable measures warranted to correct the problem be implemented. A telephone number for the disturbance coordinator shall be conspicuously posted at the construction site. • Construction Notice. Two weeks prior to the commencement of construction and grading at the project site, the applicant shall install a 3-foot by 3-foot sign at the project entry that discloses the allowable construction work days and hours, the planned construction schedule, and the contact name and phone number for residents to call for construction noise related complaints. All reasonable concerns shall be rectified within 24 hours of receipt. * 12. The applicant shall provide security fencing, to the satisfaction of the City Engineer and/or the Chief Building Official, around the site during construction of the project. * 13. A watering program which incorporates the use of a dust suppressant, and which complies with Regulation 2 of the Bay Area Air Quality Management District shall be established and implemented for all on and off-site construction activities. Equipment and human resources for watering all exposed or disturbed soil surfaces shall be supplied on weekends and holidays as well as workdays. Dust-producing activities shall be discontinued during high wind periods. * 14. All physical improvements shall be in place prior to occupancy of any structure in the project. If occupancy within the project is requested to occur in phases, all physical improvements shall be required to be in place prior to occupancy except for items specifically excluded in a construction- phases occupancy plan approved by the Planning Division. No structure shall be occupied until construction activity in the adjoining area is complete and the area is safe, accessible, provided with all reasonably expected services and amenities, and appropriately separated from remaining additional construction activity. A temporary vehicular turnaround shall be provided at the end of the completed section of loop roadway to allow separation of resident traffic and construction traffic. * 15. The applicant shall submit a written Compliance Report detailing how the conditions of approval for this project have been complied with as part of the initial submittal for the final map, plan check, and/or building permit PAGE 9 OF RESOLUTION NO. 2022-13 review process (whichever occurs first). This report shall list each condition of approval followed by a description of what the applicant has provided as evidence of compliance with that condition. The applicant must sign the report. The report is subject to review and approval by the City Engineer and/or Chief of Planning and/or Chief Building Official and may be rejected by the Town if it is not comprehensive with respect to the applicable conditions of approval. * 16. Planning Division sign-off is required prior to final Building Inspection sign-off. 17. The applicant shall be responsible for washing the exterior of abutting residences and businesses, and cleaning pools, patios, etc. at the completion of each phase of project mass grading activity. The residences to receive cleaning, the extent of the cleaning efforts to be performed, and the timing (and frequency) of such cleaning shall be subject to review and approval by the Planning Division. B. SITE PLANNING * 1. All lighting shall be installed in such a manner that lighting is generally down directed and glare is directed away from surrounding properties and rights-of-way. * 2. Any on-site wells and septic systems shall be destroyed in accordance with Contra Costa County Health Services Department - Environmental Health Division regulations. Environmental Health Division permit and inspections for this work shall be obtained. 3. As part of the development, the developer shall provide vehicular electrical charging station for assigned surface parking spaces. The final number and locations shall be subject to review and approval by the Town prior to recordation of the final map. C. LANDSCAPING * 1. Final landscape and irrigation plans shall be submitted for review and approval by the Planning Division. The plan shall include common names of all plant materials and shall indicate the size that various plant materials will achieve within a five-year period of time. * 2. All plant material shall be served by an automatic underground irrigation system and maintained in a healthy growing condition. Irrigation shall PAGE 10 OF RESOLUTION NO. 2022-13 comply with Town of Danville Landscape Ordinance #91-14 and landscape guidelines and shall be designed to avoid runoff and overspray. Proposed common maintenance lawn areas within the project shall not exceed a maximum of 25 percent of proposed common landscaped areas. * 3. All trees shall be a minimum of 15-gallon container size. All trees shall be properly staked. All remaining shrubs used in the project, which are not used as ground cover, shall be a minimum of five gallons in size. * 4. All landscaped areas not covered by shrubs and trees shall be planted with live ground cover or covered with mulch. All proposed ground cover shall be placed so that it fills in within two years. * 5. If site construction activity occurs in the direct vicinity of the on-site and off-site protected trees, a security deposit in the amount of the assessed value of the tree(s) (calculated pursuant to the Town’s Tree Protection Ordinance) shall be posted with the Town prior to the issuance of a grading permit or building permit to maximize the probability that the affected trees will be retained in good health. The applicant shall be required to secure an appraisal of the condition and value of all affected trees. The appraisal shall be done in accordance with the current edition of the “Guide for Establishing Values of Trees and Other Plants,” by the Council of Tree and Landscape Appraisers under the auspices of the International Society of Arboriculture. The appraisal shall be performed by a Certified Arborist, and shall be subject to review and approval by the Chief of Planning. A tree preservation agreement shall be prepared that outlines the intended and allowed use of funds posted as a tree preservation security deposit. That portion of the security deposit still held by the Town two full growing seasons after project completion shall be returned upon verification that the trees covered by the deposit are as healthy as can be provided for under the terms of the tree preservation agreement. 6. The proposed good-neighbor fence on the south side of the project shall be seven feet tall, including six feet of solid wood and a one-foot lattice top. D. ARCHITECTURE * 1. All ducts, meters, air conditioning and/or any other mechanical equipment whether on the structure or on the ground shall be effectively screened from view with landscaping or materials architecturally compatible with the main structures. * 2. The street numbers for each building in the project shall be posted so as to PAGE 11 OF RESOLUTION NO. 2022-13 be easily seen from the street at all times, day and night by emergency service personnel. * 3. Samples of final materials and the proposed color palette shall be submitted for review and approval by the Design Review Board prior to the issuance of building permits for the project. * 4. Final architectural elevations, details and revisions shall be submitted for review and approval by the Design Review Board prior to issuance of building permits for the project. Six full size sets of construction drawings for the project shall be submitted to the Planning Division for design review concurrent or prior to, the applicant initiating the Building Division plan check process. * 5. The project covenants, conditions and restrictions shall provide a review and approval process for any proposed repainting or re-roofing of exteriors of the units in this project. E. BIOLOGICAL RESOURCES 1. If Modified Project activities must be conducted during the nesting season (March 1 and September 1), a pre-construction nesting bird survey will be conducted by a qualified biologist no more than 14 days prior to vegetation removal or initial ground disturbance. The survey will include the project site and surrounding vicinity to identify the location and status of any nests that could potentially be affected either directly or indirectly by Project activities. If active nests of native nesting bird species are located during the nesting bird survey, a work exclusion zone will be established around each nest by the qualified biologist. Established exclusion zones will remain in place until all young in the nest have fledged or the nest otherwise becomes inactive (e.g., due to predation). Appropriate exclusion zone sizes will be determined by a qualified biologist and will vary based on species, nest location, existing visual buffers, noise levels, and other factors. An exclusion zone radius may be as small as 50 feet for common, disturbance-adapted species, or as large as 250 feet or more for raptors. Exclusion zone size will be reduced from established levels by a qualified biologist if nest monitoring findings indicate that Project activities do not adversely impact the nest, and if a reduced exclusion zone would not adversely affect the nest. 2. To avoid impacts to roosting bats, tree removal and building demolition should occur between October 1 and March 31, outside of the maternity roosting season (when female bats may have dependent young). If tree removal or building demolition must occur between April 1 and September 30, a bat roost habitat assessment should be conducted by a qualified biologist. The bat roost habitat PAGE 12 OF RESOLUTION NO. 2022-13 assessment would determine the likelihood of the Project site supporting roosting bats. If the assessment identifies suitable or potentially occupied roosts within the Project site, a pre-construction bat survey should be performed no more than 14 days prior to tree or building removal using site appropriate survey methods to determine if potential roost structures are occupied. If special-status bat species are detected during these surveys, appropriate, species and roost-specific mitigation measures will be implemented. Such measures may include postponing the removal of the trees or building until the end of the maternity roosting season, exclusionary work buffers, or consultation with CDFW. 3. The Modified Project will obtain a Section 404 Permit from the Corps and a Section 401 Water Quality Certification from the RWQCB prior to any impacts to waters of the U.S. and State. The Project will prepare a Habitat Mitigation and Monitoring Plan (MMP) to satisfy the requirements of the Corps and RWQCB permits to achieve no net-loss of wetlands. To mitigate for impacts to sensitive and natural communities, the applicant proposes to construct a 285-linear feet main channel and a 160 liner feet meandering tributary channel; the total low flow flat channel bottom area will be 6,960 square feet (0.16 acre) that is designed to develop into wetlands. The total mitigation area below top-of-bank will be 10,280 square feet (0.24 acre). This will provide 1:1 replacement for the total linear feet impacts and 4:1 replacement for the impacted acreage of channels. The total area below top-of-bank will be replaced at a 2:1 mitigation ratio. 4. The Modified Project will obtain a Lake and Streambed Alteration Agreement from the CDFW to proceed with proposed impacts to CDFW jurisdictional riparian habitat. All compliance measures included in the permit will be adhered to. 5. The Modified Project will replant valley oak and willow trees at a mitigation ratio of 2:1 to offset the removal of valley oak and willow trees from the riparian sensitive natural community. A replanting plan and a MMP will be submitted to CDFW prior to implementation. 6. The applicant shall comply with Town requirements (DMC Section 32-79), as applicable, to plant on-site or off-site replacement trees for removed protected trees which are of a cumulative diameter necessary to equal the diameter of trees approved for removal as determined by the Town’s Planning Division. For the non- Town protected trees that would be removed as part of the project, the applicant shall plant new minimum 15-gallon trees either on-site or off-site, as determined by the Town, at a 1:1 ratio. The exact locations and tree species shall be subject to review and approval by the Town’s Planning Division. PAGE 13 OF RESOLUTION NO. 2022-13 7. The following measures shall be implemented prior to the start of construction for all trees not designated for removal. • Trees to be retained on-site shall be temporarily fenced with chain-link or other substantial, highly visible material while all grading and construction activities occur, including landscaping activities that require substantial ground disturbance (more than the use of hand tools). The fencing shall be five feet from the dripline of the canopy, at least six-feet high, staked to prevent collapse, and shall contain signs identifying the protection area. • When construction activities occur within five feet of the dripline, a certified arborist shall be on site to monitor and make recommendations. • All roots shall be cut cleanly, if possible, back to a lateral branching root. Cuts should be made at right angles to the roots. • If canopy trimming is needed it shall be done under the supervision of an International Society of Arboriculture (ISA) Certified Arborist and by an ISA Certified Tree Worker. Trees shall be pruned according to American National Standards Institute (ANSI) 300 standards. ANSI 300 provides guidelines for pruning trees and other woody plants. F. AIR QUALITY 1. In order to reduce exposure of proposed residences to toxic air contaminants emissions from vehicles on I-680, the applicant shall submit to the Town of Danville for review and approval a ventilation proposal prepared by a licensed design professional for all on-site buildings that describes the ventilation design and how that design ensures all dwelling units would be below the excess cancer risk level of 10 in one million established by the Bay Area Air Quality Management District. The ventilation proposal shall include, but is not limited to, the following measures: a) If the proposed buildings would use operable windows or other sources of infiltration of ambient air, the development shall install a central HVAC system that includes high efficiency particulate filters (a MERV rating of 13 or higher). These types of filters are capable of removing approximately 90 percent of the DPM emissions from air introduced into the HVAC system. The system may also include a carbon filter to remove other chemical matter. Filtration systems must operate to maintain positive pressure within the building interior to prevent entrainment of outdoor air indoors. b) If the development limits infiltration through non-operable windows, a suitable ventilation system shall include a ventilation system with filtration specifications equivalent to or better than the following: (1) American Society of Heating, Refrigerating and Air-Conditioning Engineers MERV- 13 supply air filters, (2) greater than or equal to one air exchanges per hour of fresh outside filtered air, (3) greater than or equal to four air exchanges per hour recirculation, and (4) less than or equal to 0.25 air exchanges per hour in unfiltered infiltration. These types of filtration methods are capable PAGE 14 OF RESOLUTION NO. 2022-13 of removing approximately 90 percent of the DPM emissions from air introduced into the HVAC system. c) Windows and doors shall be fully weatherproofed with caulking and weather-stripping that is rated to last at least 20 years. Weatherproof should be maintained and replaced by the property owner, as necessary, to ensure functionality for the lifetime of the project d) Where appropriate, install passive (drop-in) electrostatic filtering systems, especially those with low air velocities (i.e., 1 mph) e) Ensure an ongoing maintenance plan for the HVAC and filtration systems. Manufacturers of these types of filters recommend that they be replaced after two to three months of use. The applicant shall inform occupants regarding the proper use of any installed air filtration system. G. PARKING * 1. All parking spaces shall be striped and provided with wheel stops unless they are fronted by concrete curbs, in which case sufficient areas shall be provided beyond the ends of all parking spaces to accommodate the overhang of automobiles. * 2. Where authorized, compact car spaces shall be clearly designated with appropriate pavement marking or signage. Compact spaces shall be no less than 8 feet by 16 feet in size, including allowable overhang. * 3. Regulatory signage/curb painting for the non-parking side of the interior loop roadway shall be provided, if deemed necessary, to the satisfaction of the San Ramon Valley Fire Protection District and the City Engineer. H. GRADING * 1. Any grading on adjacent properties will require prior written approval of those property owners affected. * 2. At least one week prior to commencement of grading, the applicant shall post the site and mail to the owners of property within 300 feet of the exterior boundary of the project site, to the homeowner associations of nearby residential projects and to the Town of Danville Development Services Department, a notice that construction work will commence. The notice shall include a list of contact persons with name, title, phone number and area of responsibility. The person responsible for maintaining the list shall be included. The list shall be kept current at all times and shall consist of persons with authority to initiate corrective action in their area of PAGE 15 OF RESOLUTION NO. 2022-13 responsibility. The names of individuals responsible for dust, noise and litter control shall be expressly identified in the notice. 3. In accordance with the recommendations of the preliminary geotechnical investigation, the applicant shall conduct a design-level geotechnical investigation. The design-level geotechnical investigation shall include additional field exploration and laboratory testing. Soil borings and/or cone penetration tests (CPT) soundings shall be conducted to evaluate the potential for liquefaction in the area of the preliminary geotechnical investigation Boring 2. The recommendations of the design-level geotechnical investigation shall be incorporated into the proposed project grading and building plans after review and approval by the Town’s Building Services Division. These recommendations may include the removal of expansive soils, replacing expansive soils with non-expansive engineered fill, deepening foundations to develop support below the zone of significant seasonal moisture change, designing foundation/slab systems to resist uplift pressures generated by swelling soils, providing drainage and landscaping to minimize seasonal moisture fluctuations in the near-surface soils, compacting soils to the appropriate relative compaction, and designing foundations to resist the adverse effects of liquefaction and corrosive soils. * 4. Where soils or geologic conditions encountered in grading operations are different from that anticipated in the soil report, a revised soils report shall be submitted for review and approval by the City Engineer. It shall be accompanied by an engineering and geological opinion as to the safety of the site from settlement and seismic activity. * 5. All development shall comply with Danville Ordinance 2004-06 which added Chapter 20 to the Danville Municipal Code relating to Stormwater Management and Discharge Control. All development shall also comply with the General Permit for Storm Water Discharges associated with Construction and Land Disturbance Activities (Order No. 2009-0009-DWQ, NPDES No. CAS000002) adopted by the State Water Resources Control Board on September 2, 2009, and effective on July 1, 2010. These regulations require, among other things, that a Stormwater Pollution Prevention Plan (SWPPP) be prepared by a Qualified SWPPP Developer for submission to the State of California via the on-line Storm Water Multi-Application Reporting & Tracking (SMARTS) system. No land-disturbing activity shall occur until a Notice of Intent (NOI) is filed and a Waste Discharger Identification (WDID) number is issued by the State of California. A copy of the final NOI, including WDID number and attached SWPPP, shall be kept at the project site at all times, with a copy provided to the Town. The requirements of the SWPPP and all other Permit Registration Documents shall be fully implemented during land-disturbing activities. * 6. All grading activity shall address National Pollutant Discharge Elimination PAGE 16 OF RESOLUTION NO. 2022-13 System (NPDES) concerns. Specific measures to control sediment runoff, construction pollution and other potential construction contamination shall be addressed through the Erosion Control Plan (ECP) and Storm Water Pollution Prevention Plan (SWPPP). The SWPPP shall supplement the Erosion Control Plan and project improvement plans. These documents shall also be kept on-site while the project is under construction. A NPDES construction permit may be required, as determined by the City Engineer. * 7. All new development shall be consistent with modern design for resistance to seismic forces. All new development shall be in accordance with the Uniform Building Code and Town of Danville Ordinances. * 8. All cut and fill areas shall be appropriately designed to minimize the effects of ground shaking and settlement. * 9. Stockpiles of debris, soil, sand or other materials that can be blown by the wind shall be covered. * 10. If toxic or contaminated soil is encountered during construction, all construction activity in that area shall cease until the appropriate action is determined and implemented. The concentrations, extent of the contamination and mitigation shall be determined by the Contra Costa County Health Department. Suitable disposal and/or treatment of any contaminated soil shall meet all federal, state and local regulations. If deemed appropriate by the Health Department, the applicant shall make provisions for immediate containment of the materials. Runoff from any contaminated soil shall not be allowed to enter any drainage facility, inlet or creek. 11. Prior to the issuance of grading permits, the applicant shall retain a specialist to assess rodent control impacts anticipated to be associated with grading activity and installation of subdivision improvements. As deemed necessary, following the Planning Division’s review of the specialist’s assessment, the applicant shall develop and implement the corresponding rodent control plan to reduce impacts to surrounding properties to the extent reasonably possible for the time periods of heavy construction activity. The report shall include a schedule for regular rodent inspections and mitigation based on the development schedule for the project. This rodent control plan is subject to review and approval by the Planning Division. 12. Prior to ground disturbing activities, the project applicant shall install a silt fence or fabric fence along the perimeter of the site, adjacent to residential development, to provide a barrier to movement by rodents and other PAGE 17 OF RESOLUTION NO. 2022-13 wildlife. The fence shall be maintained until all vegetation is remove from the site. During grading and construction activities, the project applicant shall maintain a contact person including a phone number, should issues associated with rodent dispersal occur, and shall monitor these recommended actions to determine their efficacy. I. STREETS * 1. The applicant shall obtain an encroachment permit from the Engineering Division prior to commencing any construction activities within any public right-of-way or easement. * 2. Street signing shall be installed by the applicant as may be required by the City Engineer. Traffic signs and parking restriction signs, which may be required to be installed, shall be subject to review and approval by the Transportation Division and the Police Department. * 3. All mud or dirt carried off the construction site onto adjacent streets shall be swept each day. Water flushing of site debris or sediment or concrete washing is expressly prohibited. * 4. Any damage to street improvements now existing or done during construction on or adjacent to the subject property shall be repaired to the satisfaction of the City Engineer, at full expense to the applicant. This shall include slurry seal, overlay or street reconstruction if deemed warranted by the City Engineer. * 5. All improvements within the public right-of-way, including curb, gutter, sidewalks, driveways, paving and utilities, shall be constructed in accordance with approved standards and/or plans and shall comply with the standard plans and specifications of the Development Services Department and Chapters XII and XXXI of the Town Code. At the time project improvement plans are submitted, the applicant shall supply to the City Engineer an up-to-date title report for the subject property. * 6. Handicapped ramps shall be provided and located as required by the City Engineer. * 7. Public streets shall be improved to the standards in #I.5. above. Private streets shall be improved to public street structural standards. Private street improvements, and their dimensions, shall be as shown on the project plans identified in #A.1. above and shall conform to Standard Plan 104 a & b. * 8. A satisfactory private road and private storm drain maintenance agreement PAGE 18 OF RESOLUTION NO. 2022-13 shall be submitted for approval of the City Attorney prior to any Town Council final approval action. All private road maintenance agreements shall include provisions for regular street sweeping. * 9. The Project shall be required to stripe curbs and install any necessary parking or circulation signage, as determined by the Transportation Division. 10. The project applicant shall develop and submit for approval to the Town of Danville a Construction Management and Mitigation Plan that includes designated haul routes and staging areas, traffic control procedures, emergency access provisions and construction crew parking, to minimize traffic impacts during construction. The plan shall ensure that haul routes and construction activity timing shall comply with the Town of Danville’s requirements. The plan shall also ensure that construction period employees can either park on-site or at an off-site location. In addition, the plan shall require that temporary signage, alternative pedestrian passage, and/or protected walkways be provided should sidewalks be closed during construction. J. INFRASTRUCTURE * 1. Domestic water supply shall be from an existing public water system. Water supply service shall be from the East Bay Municipal Utility District water system in accordance with the requirements of the District. * 2. All wastewater shall be disposed into an existing sewer system. Sewer disposal service shall be from the Central Contra Costa Sanitary District sewer system in accordance with the requirements of the District. * 3. Drainage facilities and easements shall be provided to the satisfaction of the City Engineer and/or the Chief Engineer of the Contra Costa County Flood Control & Water Conservation District. * 4. All required improvements to area creeks for drainage purposes shall meet the requirements of existing Town of Danville, Contra Costa County Flood Control & Water Conservation District, the Department of Fish & Game, the Department of U.S. Fish and Wildlife, California Regional Water Quality Control Board and the United States Army Corps of Engineers codes and policies. 5. Prior to commencement of any site work, the applicant/owner shall submit evidence to the Town that the requirements for obtaining a State General Construction Permit have been met. Such evidence may be the copy of a WDID number issued by the State Water Resources Control Board in PAGE 19 OF RESOLUTION NO. 2022-13 response to an application submitted via their online SMARTS System by a qualified SWPPP developer. Additionally, the applicant/owner shall submit evidence that the requirements for obtaining the U.S. Army Corps of Engineers 404 Permit, the State Water Resources Control Board 401 Certification, and the California Department of Fish and Game’s Streambank Alteration Agreement have been or will be met. Such evidence might be a copy of the permit(s)/agreement and/or a letter from the applicant/owner stating that the above permit(s) are not required for the subject project. * 6. Roof drainage from structures shall be collected via a closed pipe and conveyed to an approved storm drainage facility in the street curb. No concentrated drainage shall be permitted to surface flow across sidewalks. * 7. Any portion of the drainage system that conveys runoff from public streets shall be installed within a dedicated drainage easement or public street. * 8. If a storm drain must cross a lot, or be in an easement between lots, the easement shall be equal to or at least double the depth of the storm drain. * 9. The applicant shall furnish proof to the City Engineer of the acquisition of all necessary rights of entry, permits and/or easements for the construction of off-site temporary or permanent road and drainage improvements. * 10. All new utilities required to serve the development shall be installed underground in accordance with the Town policies and existing ordinances. All utilities shall be located and provided within public utility easements, sited to meet utility company standards or in public streets. * 11. All utility distribution facilities, including but not limited to electric, communication and cable television lines, within a residential or commercial subdivision shall be underground, except as follows: a. Equipment appurtenant to underground facilities, such as surface mounted transformers, pedestal mounted terminal boxes and meter boxes, and concealed ducts; b. Metal poles supporting street lights. * 12. All street, drainage or grading improvement plans shall be prepared by a licensed civil engineer. * 13. If a common carwash area is created to serve the project, the wastewater PAGE 20 OF RESOLUTION NO. 2022-13 created by washing cars shall be directed to the sewer collection system rather than the storm water collection system, unless otherwise authorized by the SWPPP. K. MISCELLANEOUS * 1. The project shall be constructed as approved. Minor modifications in the design, but not the use, may be approved by staff. Any other change will require Planning Commission approval through the Development Plan review process. * 2. Conditions of this approval may require the applicant to install public improvements on land over which neither the applicant, nor the Town, has easement rights to allow for the installation of the improvements. The applicant shall be responsible for acquisition of said easement rights through private negotiations. If the applicant is unsuccessful in negotiations, the applicant shall apply to the Town for use of eminent domain powers in accordance with Town Resolution No. 78-85. All easement rights shall be secured prior to Town Council final approval of any subdivision map. All costs associated with such acquisition shall be borne by the applicant. * 3. Pursuant to Government Code section 66474.9, the applicant (including the applicant or any agent thereof) shall defend, indemnify and hold harmless the Town of Danville and its agents, officers and employees from any claim, action or proceeding against the Town or its agents, officers or employees to attack, set aside, void, or annul, the Town's approval concerning this application, which action is brought within the time period provided for in Section 66499.37. The Town will promptly notify the applicant of any such claim, action or proceeding and cooperate fully in the defense. 4. The project homeowners' association, through project-specific covenants, conditions and restrictions (CC&Rs), shall be responsible for maintenance of all on-site roads, pedestrian ways, common landscape areas, common fencing, the project recreation areas, internal roads and parking areas, and common drainage facilities. Draft project CC&Rs shall be submitted to the Town of Danville for review and approval a minimum of 30 days prior to recordation of the final map. * 5. Use of a private gated entrance is expressly prohibited. * 6. The location, design and number of gang mailbox structures serving the project shall be subject to review and approval by the Design Review Board PAGE 21 OF RESOLUTION NO. 2022-13 and the local Postmaster. * 7. The proposed project shall conform to the Town’s Stormwater Management and Discharge Control Ordinance (Ord. No. 2004-06) and all applicable construction Best Management Practices (BMPs) for the site. For example, construction BMPs may include, but are not limited to: the storage and handling of construction materials, street cleaning, proper disposal of wastes and debris, painting, concrete operations, dewatering operations, pavement operations, vehicle/equipment cleaning, maintenance and fueling and stabilization of construction entrances. Training of contractors on BMPs for construction activities is a requirement of this permit. At the discretion of the City Engineer, a Storm Water Pollution Prevention Plan (SWPPP) may be required for projects under five acres. * 8. The project shall conform to the Regional Water Quality Control Board post-construction C.3 regulations which shall be designed and engineered to integrate into the project’s overall site, architectural, landscaping and improvement plans. These requirements are contained in the project’s Stormwater Control Plan and are to be implemented as follows: ▪ Prior to issuance of permits for building, site improvements, or landscaping, the permit application shall be consistent with the applicant’s approved Stormwater Control Plan and shall include drawings and specifications necessary to implement all measures in the approved plan. The permit application shall include a completed Construction Plan C.3 Checklist as described in the Town’s Stormwater C.3 Guidebook. ▪ As may be required by the City Engineer and the Chief of Planning, drawings submitted with the permit application (including structural, mechanical, architectural, grading, drainage, site, landscape, and other drawings) shall show the details and methods of construction for site design features, measures to limit directly connected impervious area, pervious pavements, self-retaining areas, treatment (Best Management Practices) BMPs, permanent source control BMPs, and other features that control stormwater flow and potential stormwater pollutants. ▪ Prior to building permit final and issuance of a Certificate of Occupancy, the applicant shall execute any agreements identified in the Stormwater Control Plan which pertain to the transfer of ownership and/or long- term maintenance of stormwater treatment or hydrograph modification BMPs. ▪ Prior to building permit final and issuance of a Certificate of Occupancy, PAGE 22 OF RESOLUTION NO. 2022-13 the applicant shall submit, for the Town’s review and approval, a Stormwater BMP Operation and Maintenance Plan in accordance with the Town of Danville guidelines. Guidelines for the preparation of Stormwater BMP Operation and Maintenance Plans are in Appendix F of the Town’s Stormwater C.3 Guidebook. 9. This project shall be responsible for the provision of a minimum of five residential units that shall be made available to moderate income households, as defined by the State Department of Housing and Community Development (HCD) and the United States Department of Housing and Urban Development (HUD). The developer shall enter into a formal agreement with the Town which specifies the maximum income of the buyer(s) (to be less than or equal to 110% of median income as adjusted for household size) and which regulates the terms of occupancy, resale or any other restriction deemed necessary to assure the long term affordability of the units to moderate income households. This agreement shall be subject to approval by the Town Council prior to recordation of the final map for the project or issuance of building permits, whichever occurs first. APPROVED by the Danville Planning Commission at a regular meeting on July 12, 2022, by the following vote: AYES: NOES: ABSTAINED: ABSENT: _____________________________ Chairman APPROVED AS TO FORM: _______________________________ ______________________________ City Attorney Chief of Planning ATTACHMENT B 375 & 359 West El Pintado Road Senior Housing Project Addendum to the 375 West El Pintado Road Residential Project Environmental Impact Report (SCH #2016012045) TOWN OF DANVILLE, CONTRA COSTA COUNTY, CALIFORNIA Prepared For: Town of Danville Development Services Department 510 La Gonda Way Danville, California 94526 Contact: David Crompton dcrompton@danville.ca.gov Prepared By: WRA, Inc. 2169-G East Francisco Boulevard San Rafael, California 94901 Date: June 2022 ATTACHMENT C Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville i June 2022 TABLE OF CONTENTS 1.0 INTRODUCTION ............................................................................................................................1 2.0 THE APPROVED PROJECT ..............................................................................................................2 3.0 THE MODIFIED PROJECT ...............................................................................................................3 3.1 Project Location and Site Characteristics ............................................................................................ 3 3.2 Project Characteristics ........................................................................................................................ 7 3.3 Project Construction ........................................................................................................................... 8 3.4 Project Approvals ................................................................................................................................ 9 4.0 REQUIRED FINDINGS FOR USE OF AN ADDENDUM ...................................................................... 11 5.0 MODIFIED ENVIRONMENTAL CHECKLIST FORM ........................................................................... 12 5.1 Explanation of Checklist Evaluation Categories ................................................................................ 12 5.2 Summary of Analysis and Findings for an Addendum ...................................................................... 12 5.3 Conclusion ......................................................................................................................................... 13 6.0 ENVIRONMENTAL ANALYSIS ....................................................................................................... 14 6.1 Aesthetics .......................................................................................................................................... 14 6.2 Agriculture and Forestry Resources .................................................................................................. 18 6.3 Air Quality ......................................................................................................................................... 21 6.4 Biological Resources .......................................................................................................................... 27 6.5 Cultural Resources ............................................................................................................................ 36 6.6 Energy ............................................................................................................................................... 39 6.7 Geology and Soils .............................................................................................................................. 41 6.8 Greenhouse Gas Emissions ............................................................................................................... 47 6.9 Hazards and Hazardous Materials .................................................................................................... 49 6.10 Hydrology and Water Quality ......................................................................................................... 53 6.11 Land Use and Planning .................................................................................................................... 58 6.12 Mineral Resources .......................................................................................................................... 60 6.13 Noise ............................................................................................................................................... 62 6.14 Population and Housing .................................................................................................................. 66 6.15 Public Services ................................................................................................................................. 68 6.16 Recreation ....................................................................................................................................... 71 6.17 Transportation ................................................................................................................................ 73 6.18 Tribal Cultural Resources ................................................................................................................ 78 6.19 Utilities and Service Systems .......................................................................................................... 80 6.20 Wildfire ........................................................................................................................................... 84 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville ii June 2022 6.21 Mandatory Findings of Significance ................................................................................................ 87 7.0 REFERENCES ............................................................................................................................... 90 LIST OF FIGURES Figure 1. Modified Project Location Map .................................................................................................... 5 Figure 2. Aerial of the Modified Project Area .............................................................................................. 6 Figure 3. Modified Project Site Plan ........................................................................................................... 10 Figure 4. Verified and Potential Jurisdictional Features in the Modified Project Area ............................. 35 LIST OF TABLES Table 1. Characteristics of the Project Site and Vicinity .............................................................................. 3 Table 2. Project Characteristics of the Approved Project and the Modified Project ................................... 7 Table 3. Grading ........................................................................................................................................... 8 Table 4. Trip Generation Summary ............................................................................................................ 75 LIST OF APPENDICES Appendix A Biological Resources Technical Report Appendix B Traffic Impact Analysis Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 1 June 2022 1.0 INTRODUCTION As the Lead Agency, the Town of Danville prepared an Environmental Impact Report (EIR) for the 375 & 359 West El Pintado Road Residential Project (referred to herein as the “Approved Project”). In December 2018, the Danville Town Council certified the 375 West El Pintado Road Residential Project EIR (referred to herein as the “2018 EIR”) (State Clearinghouse [SCH] No. 2016012045) and approved the 375 & 359 West El Pintado Road Residential Project, which includes the following: • Certification of the 2018 EIR (SCH No. 2016012045). • General Plan Amendment (GPA2015-0001) to amend the Town’s 2030 General Plan land use designation on the 0.29-acre lot located at 259 West El Pintado from Residential-Single Family- Low Density to a Mixed-Use land use designation. • Preliminary Development Plan – Rezoning (PUD2015-0001) to rezone the project site to a new P- 1, Planned Unit Development District. • Major Subdivision (SD 9399) to subdivide the site, creating 37 multifamily townhome units. • Final Development Plan (DP2015-0065) to approve the project architecture, site design, and landscape design. • Tree Removal Permit (TR2015-0039) to remove ten Town-protected trees. The proposed changes to the Approved Project are referred to herein as the “Modified Project.” This Addendum has been prepared to determine whether and to what extent the 2018 EIR remains sufficient to address the potential impacts of the Modified Project, or whether a supplemental or subsequent EIR is required under the California Environmental Quality Act (CEQA). Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 2 June 2022 2.0 THE APPROVED PROJECT The Approved Project proposed to demolish the existing on-site residence and construct eight (8) new multifamily townhome buildings containing 37 townhome units. The 37 townhome units included one-, two-, and three-bedroom units in buildings with partially below-grade and at-grade garages. Six (6) of the units (15 percent of the total) were proposed to be affordable housing units in accordance with the Town’s inclusionary housing requirements. Proposed site amenities included landscaping, off-street parking, a play structure, as well as a lawn, walking path, and an outdoor seating area on the northeast corner of the site. Six (6) larger two-story buildings were proposed to be constructed on the northern portion of the project site, each with a mix of one- two-, and three-bedroom units. These six (6) buildings ranged from 28 to 35 feet in height (2-2.5 stories) and included partially below-grade garages. Two (2) smaller two- story buildings were proposed to be constructed on the southeastern portion of the project site, each with two three-bedroom, 2.5-bathroom units. These two (2) buildings with at-grade garages were proposed to be approximately 25 feet in height. The development required approval of a General Plan Amendment, Preliminary Development Plan – Rezoning, Major Subdivision, Final Development Plan, and a tree removal permit. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 3 June 2022 3.0 THE MODIFIED PROJECT This section describes the Modified Project including project location, site characteristics, project characteristics, construction, and required permits and approvals. This section also identifies the Modified Project’s changes to the Approved Project that was previously evaluated in the 2018 EIR. 3.1 Project Location and Site Characteristics The location and site characteristics of the Modified Project, as stated in the 2018 EIR Section 2.3 Project Location and Section 2.5 Existing Site Characteristics, remain unchanged. The location and site characteristics are summarized below. The Modified Project is located north of downtown Danville, at the northwest portion of the Town at 375 and 359 West El Pintado Road, approximately 200 feet south of West El Pintado Road’s intersection with El Cerro Boulevard and immediately across West El Pintado Road from the southbound onramp to Interstate 680 (I-680) (Figure 1). The site, also referred to as the GMMR LLC Property, is composed of two legal parcels: a larger 1.59-acre parcel (375 West El Pintado Road, APN 200-140-011) and a smaller 0.29- acre parcel (359 West El Pintado Road, APN 200-140-012). Regional access is provided by I-680 with exits from El Cerro Boulevard or Diablo Road. Local access is provided by West El Pintado Road, which borders the site on the east. The Modified Project is located in a neighborhood characterized by a mix of residential, professional, public, and institutional uses. The site encompasses 1.88 acres and is currently undeveloped with the exception of a single-family residence located in the southeastern portion. The site characteristics are summarized in Table 1. Table 1. Characteristics of the Project Site and Vicinity SITE CHARACTERISTICS Project Site Accessor’s Parcel Number (APN) 200-140-011 (1.59 acres) 200-140-012 (0.29 acre) Total Lot Size 1.88 acres Existing Use Undeveloped, single-family residence Planning Area La Gonda/West El Pintado Planning Area Land Use Designation (Town of Danville 2030 General Plan APN 200-140-011: Mixed Use and GMMR LLC Special Concern Area APN 200-140-012: Mixed Use1 Zoning Designation2 APN 200-140-011: Planned Unit Development District (P-1) APN 200-140-012: P-1 Vicinity 1 The land use designation for APN 200-140-012 has been amended to Mixed Use from Residential-Single Family-Low Density per General Plan Amendment (GPA2015-0001) as included in the 2018 EIR. 2 The site has been rezoned to P-1 per the Preliminary Development Plan – Rezoning (PUD2015-0001) as included in the 2018 EIR. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 4 June 2022 SITE CHARACTERISTICS Surrounding Land Uses North: A paved parking lot for office use buildings South: Single-family residences East/Across West El Pintado Road: Assisted housing for seniors West: Multifamily residences and professional office use buildings Surrounding Land Use Designations North/Northwest: Commercial-Limited Office South: Residential-Single Family-Low Density (1 to 3 dwelling units per acre) East/Across West El Pintado Road: Commercial-Limited Offices, and Residential-Single Family-Low Density (1 to 3 dwelling units per acre) West: Residential-Multifamily-Low/Medium Density (13 to 20 dwelling units per acre) and Residential-Single Family-Low Density (1 to 3 dwelling units per acre) The site has a rolling topography that slopes generally from the east, along West El Pintado Road, to the west. The smaller 0.29-acre parcel is relatively flat compared to the larger parcel. Two (2) open drainage swales traverse the larger parcel conveying stormwater from the northwest corner and the northern end of the parcel to the southwest corner of the parcel where they drain to concrete riprap and an existing storm drain manhole (see Figure 2). Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ C E Q A \ F i g 1 L o c a t i o n . m x d Sources: National Geographic, WRA | Prepared By: czumwalt, 9/14/2021 Project Area View Extent 0 0.50.25 Miles Figure 1. Modified Project Location Map ± < Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 5 June 2022 WestElPintadoRoad Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ C E Q A \ F i g 2 A e r i a l . m x d Project Area Sources: DigitalGlobe 2016 Aerial, WRA | Prepared By: czumwalt, 9/14/2021 0 10050FeetFigure 2. Aerial of the Modified Project Area ± Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 6 June 2022 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 7 June 2022 3.2 Project Characteristics The proposed modifications are mostly associated with the project characteristics that are summarized in Table 2 below. The project applicant has filed an application with the Town of Danville Development Services Department for modification to its approved final development plan and vesting tentative map for the project. Site Plan for the Modified Project is shown on Table 2. Table 2. Project Characteristics of the Approved Project and the Modified Project FEATURE DETAILS APPROVED PROJECT MODIFIED PROJECT Building Floor Area Total Floor Area for all buildings: 44,580 square feet (37 units) Total Floor Area for all buildings: 78,860 square feet (57 units) Parking Parking Spaces Required per Danville Municipal Code (10) 3 bed, 2.5 bath x 2.25: 22.5 spaces (14) 2 bed, 2.5 bath x 2.25: 31.25 spaces (11) 2 bed, 2 bath x 2.25: 24.8 spaces (2) 1 bed, 1 bath x 1.75: 3.5 spaces Parking limit per P-1 negotiations: 1 space per unit and 0.25 space /guest3 Total Parking Spaces Required: 82 Total covered parking (garages): 63 spaces Total uncovered, off-street parking: 19 spaces Total on-street parking: 10 spaces (not included in total) Total open air parking: 72 spaces Total Parking Spaces Provided On-Site: 82 Total Parking Spaces Provided On-Site: 72 Unit Summary 3+ bed, 2.5 bath: 4 units 3 bed, 2.5 bath: 6 units 2 bed, 2.5 bath: 14 units 2 bed, 2 bath: 11 units 1 bed, 1 bath: 2 units Total Townhomes Units: 37 3 bed, 2 bath: 7 units 2 bed, 2 bath: 23 units 1 bed, 1 bath: 27 units Total Senior Housing Units: 57 Height 25 to 33 feet 34 feet top of parapet 36 feet at west end Setbacks APN 200-140-011 (1.59-acre parcel) North property line: 12 feet (ft.) West property line: 25 ft. 8 inches (in.) South property line: 40 ft. 2 in. East property line: 7 ft. 8 in and 25 ft. 2 in. APN 200-140-012 (0.29-acre parcel) West property line: 12 ft. 8 in. South property line: 20 ft. 8 in. East property line: 11 ft. 2 in. APN 200-140-011 (1.59-acre parcel) North property line: 5 ft. West property line: <1 ft. South property line: 15 ft. East property line: 20 ft. APN 200-140-012 (0.29-acre parcel) West property line: 15 ft. South property line: 10 ft. East property line: 20 ft. Amenities Landscaping Off-street parking Landscaping Bicycle parking 3 Form4 Architecture, Architect Plans for 395 W El Pintado Planning Meeting. June 3, 2022. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 8 June 2022 FEATURE DETAILS APPROVED PROJECT MODIFIED PROJECT Play structure Lawn Walking path Outdoor seating area Pickleball court Synthetic turf social pickleball lounge ADA accessible paseo walking path Stormwater treatment planter Good neighbor wood fence Wetlands Mitigation Off-site mitigation or purchase of mitigation credit On-site mitigation area creation 3.2.1 Site Access and Parking Vehicular site access would remain consistent with the Approved Project, which is provided by a single driveway on West El Pintado Road, at the midpoint of the project site’s eastern boundary. The entrance driveway would transition to a 373-foot-long and 20-foot-wide internal road that provide access to the parking lots located on the floor level of the central and south buildings. The Modified Project would include a total of 72 on-site parking spaces. 3.3 Project Construction A description of the project’s construction process is provided below. 3.3.1 Construction Schedule The Modified Project would include the same phasing as the Approved Project, as described in the 2018 EIR in Section 2.7, Grading and Construction (pp. 42). The 2018 EIR estimated that construction would last approximately 20 months with the following estimated construction schedule: • Excavation and shorting – three (3) months • Underground utilities and waterproofing – two (2) months • Retaining walls and lower floor – two (2) months • Upper-level framing – three (3) months • Façade and tenant improvements – six (6) months • Finish and site work – four (4) months 3.3.2 Grading The cut and fill amounts with the Modified Project vary slightly from cut and fill amounts analyzed in the 2018 EIR. Table 3 summarizes the cut and fill, export, and hauling trip information of the Approved Project and the Modified Project. Table 3. Grading APPROVED PROJECT (CUBIC YARDS) MODIFIED PROJECT (CUBIC YARDS) NET CHANGE (CUBIC YARDS) Cut (cubic yards) 6,340 6,540 200 Fill (cubic yards) 470 870 400 Export (cubic yards) 5,870 5,670 -200 Hauling Tripa (round trips) 419 to 650 405 to 630 -20 to -14 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 9 June 2022 APPROVED PROJECT (CUBIC YARDS) MODIFIED PROJECT (CUBIC YARDS) NET CHANGE (CUBIC YARDS) Note: a. Assuming an average truck load of 9 to 14 cubic yards. 3.4 Project Approvals Discretionary permits and approvals were obtained for the Approved Project in 2018, as discussed in Chapter 1.0 above. Permits and approvals that are anticipated for the Modified Project includes the followings: • Town of Danville’s approval on modification to the approved final development plan, which includes a density bonus, and vesting tentative map • U.S. Army Corps of Engineers (USACE) Nationwide Permit 29 • San Francisco Bay Reginal Water Quality Control Board (RWQCB) Section 401 Water Quality Certification • California Department of Fish and Wildlife (CDFW) Lake and Streambed Alteration Agreement Notification I I ' \ � f DIIJMI (Z,11111 BF)\ �CAPI! \ ..,._ 1 1 , I \ IIIP.1 (9711 IIP) PLOW-111IIOUGH PL.ANTEii - - - - --!!111111 _____ 1!!!1111_ �-�-!'"'!!'!!;,,,...,,....,;..L�����::��t�\-:.1-N' IIENT .,, L...,...<,,..,..,., LANDIICAPE JO GRAPHIC SCALE 15 JO ( IN FEET ) t inch -30 ft. 60 Source: TALUS Engineering, Planning, Development. June 24, 2022 Figure 3. Project Site Plan \ \ \ DIU,4I \ (1,UIIIIF) LANDllc:APII I I \ I \\ DIIIA-10 (4,1112 IIF) LANDIIGAPe t: (O)wra ENVIRONMENTAL CONSULTANTS Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 10 June 2022 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 11 June 2022 4.0 REQUIRED FINDINGS FOR USE OF AN ADDENDUM Section 15164 of the State CEQA Guidelines states that an addendum to a previously certified EIR shall be prepared if some changes or additions are necessary to the previously certified document, but none of the conditions described in Section 15162 have occurred. Section 15162 of the State CEQA Guidelines identifies the conditions of a project that would require preparation of a subsequent EIR, such that an Addendum to the prior EIR would not be permitted under CEQA. A proposed change in a project will require preparation of a subsequent EIR if: A) The change in the project is substantial. Substantial changes in the project are those that would require major revisions of the certified 2018 EIR (SCH No. 2016012045) due to the involvement of new significant environmental effects, or if a substantial increase in the severity of previously identified significant effects has occurred. B) The circumstances under which the project is undertaken have substantially changed. Substantial changes in circumstances are those that would require major revisions of the certified 2018 EIR in order to describe and analyze new significant environmental effects, or any changes that would cause a substantial increase in the severity of the previously identified significant effects. C) New information of substantial importance, which was not known and could not have been known, with the exercise of reasonable diligence at the time the previous environmental document was approved, shows any of the following. a. The project will have one or more significant effects not discussed in the previous EIR or negative declaration. b. Significant effects previously examined will be substantially more severe than shown in the previous EIR. c. Mitigation measures or alternatives previously found not to be feasible would in fact be feasible and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measure or alternative. d. Mitigation measures or alternatives which are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative. Additionally, pursuant to Section 15163 of the State CEQA Guidelines, a lead agency may choose to prepare a supplement to an EIR rather than a subsequent EIR if: • Any of the conditions described in Section 15162 would require the preparation of a subsequent EIR, and • Only minor additions or changes would be necessary to make the previous EIR adequately apply to the project in the changed situation. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 12 June 2022 5.0 MODIFIED ENVIRONMENTAL CHECKLIST FORM The purpose of the checklist is to evaluate the categories in terms of any “changed condition” (e.g., changed circumstances, project changes, or new information of substantial importance) that may result in a changed environmental effect (e.g., a new significant impact or substantial increase in the severity of a previously identified significant effect) that would require further environmental review (CEQA Guidelines Section 15162). The questions posed in the checklist come from Appendix G of the State CEQA Guidelines. The explanation of the checklist evaluation categories is provided in Section 5.1 below. 5.1 Explanation of Checklist Evaluation Categories A. Discussion in the 2018 EIR and related documents? This column provides a cross-reference to the 2018 EIR and related document(s) where information and analysis may be found relative to the environmental issue listed under each topic. B. Less Impact than Approved Project? This column indicates that the Modified Project would have a lesser environmental impact that Approved Project under the 2018 EIR. C. New Less than Significant Impact? This column indicates the Modified Project would have a new less than significant environmental impact that was not previously disclosed in the 2018 EIR. D. New Less than Significant Impact with Mitigation Incorporated? This column indicates that the Modified Project would have a new significant impact on the environment that would require mitigation measures that were not previously disclosed in the 2018 EIR E. New Potentially Significant Impact? This column indicates the Modified Project would have a new significant and unavoidable impact on the environment that cannot be reduced to a less-than-significant level with the incorporation of mitigation measures. F. Same Impact as Approved Project? This column indicates that the Modified Project would have the same environmental impact as the Approved Project under the 2018 EIR. 5.2 Summary of Analysis and Findings for an Addendum Based upon the analysis of potential environmental consequences anticipated to occur as a result of the Modified Project’s implementation (see Section 6.0 Environmental Analysis), the Town of Danville has determined that: • There are no substantial changes proposed by the Modified Project that will require major revisions to the 2018 EIR, or preparation of a new subsequent or supplemental EIR, due to the involvement of new significant environmental effects or a substantial increase in the severity of Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 13 June 2022 previously identified significant effects. The Modified Project is consistent with the findings of the 2018 EIR and would have similar construction-related and operational effects (Section 1562, subdivision (a), State CEQA Guideline). • All mitigation measures from the 2018 EIR would remain in effect and would continue to mitigate impacts resulting from the Modified Project. 5.3 Conclusion The Town of Danville may approve the Modified Project, as presented, based on this addendum. The impacts of the Modified Project remain within the impacts previously analyzed in the certified 2018 EIR (Section 15162, subdivision (b)(3), State CEQA Guidelines). The Modified Project does not require major revision to the certified 2018 EIR. No new significant information or changes in circumstances surrounding the project have occurred since certification of the EIR. The previously analysis completed for the Approved Project remains adequate under CEQA. However, the applicant will remain obligated to comply with all applicable mitigation measures and conditions of approval contained with the Certified EIR and further identified in this Addendum. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 14 June 2022 6.0 ENVIRONMENTAL ANALYSIS 6.1 Aesthetics Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Have a substantial adverse effect on a scenic vista? Yes b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? Yes c) In non-urbanized areas, substantially degrade the existing visual character or quality of public views of the site and its surroundings? (Public views are those that are experienced from publicly accessible vantage point). If the Project is in an urbanized area, would the Project conflict with applicable zoning and other regulations governing scenic quality? Yes d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? Yes 6.1.1 Summary of Impacts Identified in the 2018 EIR A discussion of the Aesthetics impacts was included in Section 4.1 of the 2018 EIR (pp. 51 to pp. 64). The 2018 EIR found that implementation of the Approved Project would have a less-than-significant impact to Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 15 June 2022 scenic vistas because existing views to Las Trampas Reginal Wilderness area are partial and intermittent, and views of Mt. Diablo would not be altered. The Approved Project would have a less-than-significant impact on state scenic highways because the site is only partially visible to motorists on I-680 for a short period of time. The 2018 EIR also concluded that the Approved Project would have a less-than-significant impact on the existing visual character and quality as the Approved Project would be visually compatible with surrounding developments and would not conflict with adopted visual resource policies of the Town of Danville (Impacts AES-1 to AES-4, pp. 59 to pp. 63).4 The 2018 EIR concluded no other impacts with respect to aesthetics. 6.1.2 Environmental Setting Aesthetic resources are generally defined as both the natural and built features of the landscape that contribute to the public’s experience and appreciation of the environment. Depending on the extent to which a project’s presence would negatively alter the perceived visual character and quality of the environment, aesthetic impacts may occur. The Modified Project is located in the La Gonda/West El Pintado Planning Area, an area that is characterized by a mix of uses. The visual character within the La Gonda/West El Pintado Planning Area is diverse, and the buildings have varying architectural styles, massing, and heights. This area contains a combination of residential, professional, public, and institutional uses. Portions of the area have undergone a transition from being semi-rural to more suburban in character. Most of the new construction since the mid-1980s has consisted of single-family residences built at medium densities. Some older multifamily housings exist in the area. Assisted senior housing was more recently developed along West El Pintado Road. Portions of the West El Pintado area retain a rural character, with remnants of former orchards, large lots, single-family homes, and street sections without curbs, gutters, or sidewalks .5 The Modified Project site is undeveloped, with the exception of one single-family residence located on the southeast portion. I-680 is located directly northeast of the site. A skilled nursing facility is located to the east, across West El Pintado Road. Single-family residences are located south, which are mostly one- story homes. Multifamily residences and office buildings are located to the west and northwest, and a paved parking lot is located to the northwest. The residences and buildings in the site vicinity are primarily two-story structures. The Modified Project area includes scenic vistas of Mt. Diablo to the east and the Las Trampas Regional Wilderness ridgelines to the west from some public viewpoints. I-680 is located approximately 150 feet northeast of the site. The portion of the I-680 that passes the site has been designated as a Scenic Highway under the California Scenic Highway Program. 6.1.3 Discussion of Impacts a) Have a substantial adverse effect on a scenic vista? Same Impact as Approved Project. The Modified Project would be developed at the same location as the Approved Project. As with the Approved Project, construction and operation of the Modified Project would not impede public views of Mt. Diablo, but would block some views of the ridgelines of the Las 4 Town of Danville. 375 West El Pintado Road Residential Project Draft Environmental Report. July 2018. 5 Town of Danville. The 2030 General Plan. Adopted March 19, 2013. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 16 June 2022 Trampas Regional Wilderness area from West El Pintado Road. The Modified Project’s structures would be three (3) to five (5) feet taller than the structures analyzed in the 2018 EIR. However, the minor increase in height would not result in a more severe impact than what was analyzed in the 2018 EIR. In addition, the existing views to the ridgelines from the area are partial and intermittent due to the topography of the area. Therefore, impacts to public views would be less than significant, consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. The 2018 EIR determined that the Approved Project would not interfere with private views of Mt. Diablo and due to the distance, the existing terrain, and the vegetation on-site. As with the Approved Project, the Modified Project would be subject to the same distance, terrain, and vegetation limitations and would not interfere with private views of Mt. Diablo. The ridgelines of the Las Trampas Reginal Wilderness area are located to the west of the Modified Project; there are no residences located to the east of the site. Therefore, the Modified Project would not interfere with private views of the ridgelines. Therefore, Modified Project’s impacts to private views would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? Same Impact as Approved Project. The I-680 Freeway (I-680) is located approximately 150 feet northeast of the Modified Project site. The portion of I-680 that passes the site is designed as a Scenic Highway under the California Scenic Highway Program. The site is partially visible to motorists on I-680. However, the site would be visible to the motorists for fewer than 10 seconds.6 The Modified Project would be developed consistent with the visual character of the area, which is primarily single-family and multifamily residences. The Modified Project would include removal of trees. Removal of protected trees would require a tree permit from the Town of Danville and compliance with the Town’s Tree Ordinance to replace removed trees on-site and/or off-site. The site and context would retain its overall suburban wooded character with the tree protection and replacement requirements set forth in the Town’s Tree Ordinance. Due to the fact that the site is only partially visible to motorists on I-680 for a short period of time, impacts would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. c) In non-urbanized areas, substantially degrade the existing visual character or quality of public views of the site and its surroundings? If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality? Same Impact as Approved Project. Consistent with the 2018 EIR, the Modified Project would develop a mostly vacant site with development that is generally compatible in scale and design with the existing development to the west and southwest which are primarily two-story multifamily structures. The Modified Project would incorporate design measures to provide an appropriate transition to the single- family uses to the south, which include limiting development to two stories in height and planting screen trees and understory vegetation by the southern property line. The Town of Danville would review a Final Development Plan including the proposed architecture, site design, and landscape design to ensure that the project would comply with the Town’s 2030 General Plan Quality Development Goal 1 regarding future development to be complemented with Danville’s existing small town characters and established quality of life, Community Design Goal 2 regarding integrating new development that is compatible with the physical character of the surrounding community, and Housing Design Goal 5 regarding providing 6 Town of Danville. 375 West El Pintado Road Residential Project Draft Environmental Report. July 2018. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 17 June 2022 opportunities for new housing that meets community needs. Therefore, the proposed project would be visually compatible with the surrounding neighborhood. The Modified Project would include tree removal and would replace removed trees according to the Town’s Tree Ordinance. The Modified Project would require removal of 49 trees, including one (1) heritage tree and nine (9) protected trees.7 The removal of protected trees requires a tree permit from the Town of Danville and compliance with the Town Tree Ordinance. To obtain a tree permit, the applicant must submit a planning application for tree removal that includes a site plan detailing the location and description of trees that would be removed. The Ordinance also requires, when appropriate, planting of on-site and/or off-site replacement trees (location and species to be determined by the Town) of a cumulative diameter necessary to equate to the diameter of the trees to be removed. In addition, even with the proposed tree removal the site and context would retain its overall suburban wooded character. Complying to the tree replacement requirements would minimize the change to visual character and visual quality of the site. Impacts would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? Same Impact as Approved Project. Consistent with the 2018 EIR, the Modified Project would introduce new sources of light and glare to a largely vacant site. The 57 senior housing units would include building- mounted and outdoor security and accent lighting that could be visible from and spill over to surrounding properties. The building’s exterior would be made of non-reflective materials, such as stucco and glazing. Headlights of vehicles entering and exiting the site at night would cast light onto roadways and surrounding properties. However, the Modified Project would not substantially alter lighting conditions in the area due to existing ambient light levels from the existing residential and commercial development in the vicinity of the site. The Modified Project would be required to comply with Danville Municipal Code Section 32-1.14, Off-Street Parking, which requires lighting to be designed directing downward and away from residential areas and public streets. This code also requires the lighting intensity to be no greater than reasonably required to light the parking area. The impact related to new source of lighting and glare would be less than significant when complying with Danville Municipal Code Section 32-1.14. There would continue to be a less-than-significant impact with the Modified Project, consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.1.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts to visual resources in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. 7 WRA, Inc. Biological Resources Technical Report – 375 West El Pintado Road Project. June 2022. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 18 June 2022 6.2 Agriculture and Forestry Resources Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? Yes b) Conflict with existing zoning for agricultural use, or a Williamson Act contract? Yes c) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code section 12220(g)), timberland (as defined by Public Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g))? Yes d) Result in the loss of forest land or conversion of forest land to non-forest use? Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 19 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? e) Involve other changes in the existing environment, which, due to their location or nature, could result in conversion of Farmland, to non- agricultural use or conversion of forest land to non-forest use? Yes 6.2.1 Summary of Impacts Identified in the 2018 EIR A discussion of the Agriculture and Forestry Resources impacts was included in Section II of the 2018 EIR Appendix A-Initial Study (pp. 11 to pp. 13). As discussed in Appendix A-Initial Study of the 2018 EIR, the Approved Project would have no impact to agriculture and forestry resources because the Approved Project is not located on or adjacent to agricultural land, forest land, or Williamson Act contract land, and would not involve development that could result in the conversion of farmland to non-agricultural uses. 6.2.2 Environmental Setting The environmental setting for Agriculture and Forestry Resources is the same as described in the 2018 EIR Appendix A-Initial Study. The Modified Project is classified as Urban and Built-Up Land by the California Department of Conservation’s (CDC’s) Farmland Mapping and Monitoring Program (FMMP).8 The nearest grazing land designated by the FMMP is approximately 1.25 miles for the project site.9 The nearest Williamson Act contract is located approximately 1.5 miles east of the project site.10 6.2.3 Discussion of Impacts a-e) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? Conflict with existing zoning for agricultural use, or a Williamson Act contract? Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code Section 12220(g)), timberland (as defined by Public Resources Code Section 4526), or timberland zoned Timberland Production (as defined by Government Code Section 51104(g))? Result in a loss of forest land or conversion of forest land to non-forest use? Involve other changes in the existing environment which, due to 8 California Department of Conservation. California Important Farmland Finder. Available at https://maps.conservation.ca.gov/DLRP/CIFF/. Accessed on August 25, 2021. 9 Ibid. 10 Contra Costa County Department of Conservation and Development. 2016 Agricultural Preserves Map. Map Created on February 1, 2017. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 20 June 2022 their location or nature, could result in conversion of Farmland to non-agricultural use or conversion of forest land to non-forest use? Same Impact as Approved Project. The Modified Project would involve development of 57 age-restricted apartment units as compared to 37 townhome units under the Approved project. The Modified Project would be located in the same location as the Approved Project and would be the same size as the Approved Project. Consistent with the 2018 EIR, the site is not used for agricultural production and does not contain any forestry resources. As a result, the Modified Project would have no impact on agriculture and forestry resources. None of the proposed modifications would significantly affect this environmental resource. Preparation of a subsequent EIR is not required. 6.2.4 Conclusion The Modified Project would not have an effect on agriculture and forestry resources. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 21 June 2022 6.3 Air Quality Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the following determinations. Would the project: a) Conflict with or obstruct implementation of the applicable air quality plan? Yes b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is in non-attainment under an applicable federal or state ambient air quality standard? Yes c) Expose sensitive receptors to substantial pollutant concentrations? Yes* d) Result in other emissions (such as those leading to odors) affecting a substantial number of people? Yes * The 2018 EIR discussed the impacts to new residents with the implementation of the Approved Project. 6.3.1 Summary of Impacts Identified in the 2018 EIR Air quality impacts were discussed in Section 4.2 of the 2018 EIR (pp. 65 to pp. 79) and in Section III of the 2018 EIR Appendix A – Initial Study (pp. 13 to pp. 14). The 2018 EIR concluded that construction and operational emissions associated with the Approved Project would not exceed Bay Area Air Quality Management District’s (BAAQMD’s) thresholds (Impact AQ-1, pp. 75). The Approved Project would have a less-than-significant impact related to exposure of new residents to toxic air contaminants (TACs) with implementation of Mitigation Measure AQ-1 (Impact AQ-2, pp. 77). The Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would not conflict or obstruct an applicable air quality plan and would not generate objectionable odors that would affect a substantial number of people; therefore, impacts would be less than significant (Impacts a and e), pp.13 and pp. 14 of Appendix A). 6.3.2 Environmental Setting The environmental setting for Air Quality is the same as described in the 2018 EIR. As such, the Modified Project would be located in the San Francisco Bay Area Air Basin (SFBAAB) on the same project site as the Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 22 June 2022 Approved Project. The SFBAAB is within the jurisdiction of BAAQMD. The SFBAAB is in nonattainment for the federal standards for ozone and particulate matter (PM2.5) and is in nonattainment for the State standard for ozone and particulate matter (PM2.5 and PM10). 6.3.3 Discussion of Impacts a) Conflict with or obstruct implementation of the applicable air quality plan? Same Impact as Approved Project. The most recent and applicable adopted air quality plan that is applicable for the Modified Project is the Bay Area Air Quality Management District (BAAQMD) 2017 Clean Air Plan (CAP). The 2017 CAP serves as the regional air quality plan for the San Francisco Bay Area Air Basin for attaining federal ambient air quality standards. The 2017 CAP updates the most recent Bay Area plan, the 2010 CAP, pursuant to air quality planning requirements defined in the California Health and Safety Code. To fulfill State zone planning requirements, the 2017 control strategy includes all feasible measures to reduce emissions of ozone precursors (ROG and NOx) and reduce transport of ozone and its precursors to neighboring air basins. The CAP builds upon and enhances the BAAQMD’s efforts to reduce emissions of fine particulate matter and TACs. The 2017 CAP does not include control measures that apply directly to individual development projects. Instead, the control strategy includes control measures related to stationary sources, transportation, energy, buildings, agriculture, natural and working lands, waste management, water, and super-greenhouse gas pollutants. The 2017 CAP focuses on two paramount goals: • Protect air quality and health at the regional and local scale by attaining all national and state air quality standards and eliminating disparities among Bay Area communities in cancer health risk from TACs • Protect the climate by reducing Bay Area GHG emissions to 40 percent below 1990 levels by 2030, and 80 percent below 1990 levels by 2050 Consistency with the 2017 CAP should demonstrate that a project: • Supports the primary goals of the 2017 CAP • Includes applicable control measures from the 2017 CAP • Does not disrupt or hinder implementation of any control measures from the 2017 CAP On an individual project basis, consistency with BAAQMD quantitative thresholds is interpreted as demonstrating support for the CAP’s goals. As discussed under criterion (b) below, the Modified Project would not exceed BAAQMD significance thresholds related to air quality emissions, the Modified Project would not result in exceedances of BAAQMD thresholds for criteria air pollutants and thus would not conflict with the 2017 CAP’s goal to attain air quality standards. The 2017 CAP includes goals and measures to increase the use of electric vehicles, promote the use of on-site renewable energy, and encourage energy efficiency. The Modified Project would include features that are consistent with these goals and measures, including meeting California Green Building Standards and providing 45 spaces of bicycle parking. Therefore, the Modified Project would not conflict with or obstruct the implementation of an applicable air quality plan. Therefore, the impacts would be less than significant and would be consistent with the findings of Appendix A of the 2018 EIR. Preparation of a subsequent EIR is not required Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 23 June 2022 b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard? Same Impact as Approved Project. The Modified Project would include development of 57 units, which is 16 units more than what was analyzed in the 2018 EIR. However, the Modified Project would result in 5,670 cubic yards of exported earth material (200 cubic yards less than what was analyzed in the 2018 EIR). As shown on Section 4.2 Table 9 of the 2018 EIR (pp. 75), construction activities would result in emissions of reactive organic gases, nitrogen oxides, and particulate matters, which are below the BAAQMD regional thresholds.11 Construction activities associated with the demolition of existing uses and construction of the Modified Project would result in similar air quality impacts as the Approved Project because the Modified Project would involve the same construction method, equipment use, and construction activities as the Approved Project. The minor increase of 16 units (compared to the 37 units analyzed in the 2018 EIR) would not result in a new or more severe impacts related to construction emissions beyond what was previously analyzed in the 2018 EIR. Preparation of a subsequent EIR is not required. Operation of the Modified Project would result in some long-term emissions, including emissions associated with vehicle trips, the use of natural gas and electricity, consumer products, architectural coatings, and landscaping equipment. As discussed below in Section 6.17, Transportation, the Modified Project would result in 75 fewer daily vehicle trips than the Approved Project. Therefore, the Modified Project would result in less long-term emissions associated with vehicle trips compared to the Approved Project. The minor increase of 16 units (compared to the 37 units analyzed in the 2018 EIR) would not result in substantial increases in population that would thereby increase emissions associated with the use of natural gas and electricity, consumer products, architectural coatings, and landscaping. Therefore, the Modified Project would be expected to result in similar operational air quality emissions as the Approved Project, which would be below the BAAQMD daily and annual thresholds as shown on Section 4.2 Table 10 and Table 11 of the 2018 EIR (pp. 76). The Modified Project would not result in a new or more severe impacts related to operational emissions beyond what was previously analyzed in the 2018 EIR. Preparation of a subsequent EIR is not required. c) Expose sensitive receptors to substantial pollutant concentrations? New Less than Significant Impact. Sensitive receptors are typically defined as the segment of the population most susceptible to air quality effects including children, the elderly, and the sick, as well as land uses such as schools, hospitals, parks, and residential communities. Sensitive receptors located within 1,000 feet from the site include the multifamily residences to the west and southwest, the St. Isidore School to the southwest, the single-family residences to the south, and the assisted living facility to the southeast. The sensitive receptors closest to the site would be the multifamily and single-family residences that border the site to the west and south. The Modified Project also includes siting of new sensitive receptors. Localized air quality impacts to sensitive receptors typically result from carbon monoxide (CO) hotspots and TACs, which are discussed in the following subsections. Carbon Monoxide Hotspots A CO hotspot is a localized concentration of CO that is above a CO ambient air quality standard. Localized CO hotspots can occur at intersections with heavy peak hour traffic. Specifically, hotspots can be created 11 Particulate matters include PM10 and PM2.5. PM10 is particulate matter measuring no more than 10 microns in diameter, while PM2.5 is fine particulate matter measuring no more than 2.5 microns in diameter. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 24 June 2022 at intersections where traffic levels are sufficiently high such that the local CO concentration exceeds the federal one-hour standard of 35.0 parts per million (ppm) or the federal and State eight-hour standard of 9.0 ppm.12 BAAQMD recommends comparing project’s attributes with the following screening criteria as a first step to evaluating whether a project would result in the generation of CO concentrations that would substantially contribute to an exceedance of the Thresholds of Significance. The Modified Project would result in a less-than-significant impact to localized CO concentrations if: • The Modified Project is consistent with an applicable congestion management program for designated roads or highways, regional transportation plan, and local congestion management agency plans. • The Modified Project would not increase traffic volumes at affected intersections to more than 44, 000 vehicles per hour. • The Modified Project traffic would not increase traffic volumes at the affected intersections to more than 24,000 vehicles per hour where vertical and/or horizontal mixing is substantially limited (e.g., tunnel, parking garage). The Modified Project would generate 196 daily trips (Appendix B). The Modified Project trip generation is far below the screening thresholds listed above. Therefore, the impact of localized CO emissions would not be significant. Preparation of a subsequent EIR is not required. Toxic Air Contaminants TACs are defined by California law as air pollutants that may cause or contribute to an increase in mortality or an increase in serious illness, or which may pose a present or potential hazard to human health. Construction-related activities would result in temporary project-generated emissions of diesel particulate matter (DPM, a TAC) exhaust emissions, from off-road, heavy-duty diesel equipment for site preparation, grading, building construction, and other construction activities. While sensitive receptors near the site may be exposed to contaminants, exhaust emission would disperse rapidly from the site and would not substantially impact the nearest sensitive receptors. Dust would be generated during site preparation, grading, and construction activities, with the most dust occurring during grading activities. The amount of dust generated would be highly variable and would be dependent on the size of the area disturbed, amount of activity, and soil conditions. The Modified Project applicant would be required to comply with BAAQMD’s recommended measures to reduce construction dust and exhaust impacts. Construction impacts on the sensitive receptors would be less than significant with implementation of the following BAAQMD’s recommended measures: • All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day. • All haul trucks transporting soil, sand, or other loose material off-site shall be covered. 12 California Air Resources Board. Carbon Monoxide & Health. Website: https://ww2.arb.ca.gov/resources/carbon-monoxide- and-health. Accessed October 6,2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 25 June 2022 • All visible mud or dirt tracked-out onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited. • All vehicle speeds on unpaved roads shall be limited to 15 miles per hour. • All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible. Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used. • Idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to five minutes (as required by the California airborne toxics control measure Title 13, Section 2485 of California Code of Regulations [CCR]). Clear signage shall be provided for construction workers at all access points. • All construction equipment shall be maintained and properly tuned in accordance with manufacturer’s specifications. All equipment shall be checked by a certified visible emissions evaluator. • Post a publicly visible sign with the telephone number and person to contact at the lead agency regarding dust complaints. This person shall respond and take corrective action within 48 hours. The BAAQMD’s phone number shall also be visible to ensure compliance with applicable regulations. Sources of operational TACs include, but are not limited to, land uses such as freeways and high-volume roadways, truck distribution centers, ports, rail yards, refineries, chrome plating facilities, dry cleaners using perchloroethylene, and gasoline dispensing facilities. The Modified Project does not include construction of new gas stations, dry cleaners, highways, roadways, or other sources that could be considered new permitted or non-permitted source of TAC or PM2.5 in proximity to receivers. In addition, the Modified Project would not introduce a new stationary source of emissions and the mobile emissions generated from the Modified Project would be minimal and spread over a broad geographical area. Therefore, the operation of the Modified Project would not expose nearby sensitive receivers to substantial pollutant concentrations. Impacts would be less than significant. Preparation of a subsequent EIR is not required. d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people? Same Impact as Approved Project. Odors are typically associated with industrial projects involving the use of chemicals, solvents, petroleum products, and other strong-smelling elements used in manufacturing processes, as well as sewage treatment facilities and landfills. As with the Approved Project, the Modified Project would involve the use of diesel equipment that may generate odors during construction. However, construction activities would be temporary for approximately 20 months, and the odors would dissipate quickly. The Modified Project would not generate objectionable odors that would affect a substantial number of people. Therefore, the impacts related to odors would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 26 June 2022 6.3.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts to air quality in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 27 June 2022 6.4 Biological Resources Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? Yes b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, or regulations or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? Yes c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? Yes d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 28 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? of native wildlife nursery sites? e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? Yes f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? Yes 6.4.1 Summary of Impacts Identified in the 2018 EIR Impacts to biological resources were discussed on Section 4.3 of the 2018 EIR (pp. 92 to pp. 101) and on Section IV of Appendix A-Initial Study of the 2018 EIR (pp. 15 and pp. 16). The 2018 EIR determined that construction of the Approved Project could impact special-status species, but the impacts would be mitigated to a less-than-significant level with implementation of Mitigation Measure BIO-1 to conduct pre-construction survey (Impact BIO-1, pp. 95 and pp. 96). The Approved Project would impact wetlands and/or waterways. With implementation of Mitigation Measures BIO-2 to BIO-4, the Approved Project would be required to conduct formal jurisdictional delineation, obtain regulatory permits, and compensate impacted wetlands; therefore, impacts to wetlands and/or waterways would be mitigated to a less-than-significant level (Impact BIO-3, pp. 97 to pp. 99). It was determined that in the 2018 EIR, the Approved Project would have a less-than-significant impact to riparian habitat or migratory wildlife corridors because no riparian habitat or wildlife corridors occur on-site (Impacts BIO-2 and BIO-4, pp. 97 and pp. 99). Implementation of the Approved Project would result in protected tree removal. Impacts to a tree preservation policy or ordinance would be mitigated to a less-than-significant level with implementation of Mitigation Measures BIO-5 and BIO-6 to replace removed trees and protect retained trees (Impact BIO-5, pp. 99 to pp. 101). Appendix A-Initial Study determined that the Approved Project would have no impacts to an approved Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or State habitat conservation plan because no such plan is applicable to the site (Impact f, pp. 16). 6.4.2 Environmental Setting A Biological Resources Technical Report (BRTR) was prepared for the Modified Project by WRA, Inc. (WRA) in June 2022. On June 29 and October 15, 2021, WRA biologists visited the Modified Project site to map vegetation, aquatic communities, unvegetated land cover types, document plant and wildlife species Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 29 June 2022 present, and evaluate on-site habitat for the potential to support special-status species as defined by CEQA. The following discussion is based on information from the BRTR (Appendix A). Vegetation and Sensitive Natural Communities and Land Cover Types Four (4) land cover types were observed on-site, including developed, non-native annual grassland, ephemeral stream, and linear seasonal wetland The developed and non-native annual grassland land covers are considered non-sensitive communities. The sensitive communities on-site include ephemeral streams and linear seasonal wetlands (Figure 4). Aquatic Resources There are two ephemeral streams within the Modified Project site. The two ephemeral streams only flow during and immediately following a rain event. One ephemeral stream is located in the southern portion of the site. The other ephemeral stream is located in the western portion of the site. The linear seasonal wetland occurs in an earthen swale that begins at a concrete apron at the northern end of the site and continues in a southwesterly direction to another concrete apron with a 48-inch stormwater culvert. Indicators of wetland hydrology observed within the linear seasonal wetland include surface water, high water table, saturation, drift deposits, drainage pattern, and oxidized rhizospheres along living roots. The linear seasonal wetland swale supports flows characteristics of an intermittent drainage. Special-status Plants Based upon a review of resources databases, including California Native Plant Society (CNPS) and California Natural Diversity Database (CNDDB), 73 special-status plant species have been documented in the vicinity of the Modified Project site. However, due to lack of suitable hydrologic, soil, and topographic conditions, none of the documented special-status plant species have the potential to occur on-site. In addition, the site is geographically isolated (e.g., below elevation) from the documented range of the special-status plant species. Special-status Wildlife Thirty-eight (38) special-status wildlife species were documented in the vicinity of the Modified Project site. However, most of the 38 documented special-status wildlife species are excluded from the site due to the lack of suitable habitat features, including vernal pools, perennial aquatic habitat, tidal marsh areas, coastal or montane forest, serpentine or loose-textured sandy soils, chapparal habitat or large rock structures, large mammal burrow, cave, mine shafts, and abandoned buildings. Two (2) special-status species have a low to moderate potential to occur in the immediate vicinity of or in portions of the site: • Pallid bat (Antrozous pallidus) – California Fish and Wildlife (CDFW Species of Special Concern and Western Bat Working Group High Priority. Pallid bat has low potential to occur on-site. There are several CNDDB occurrences in the vicinity, and the mature trees within the site (primarily oaks) may contain cavities or snags suitable for roosting by this species. The existing residence on-site may also provide marginal roosting habitat. • White-tailed kite (Elanus leucurus) – CDFW Fully Protected Species. White-tailed kite has moderate potential to occur on-site. Several large coast live oaks within the site have the potential to support white-tailed kit nesting and this species has been observed in the vicinity of the site. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 30 June 2022 Critical Habitat No critical habitat is present within the Modified Project site. Wildlife Corridors and Native Wildlife Nursery Sites No native wildlife nursery sites are present on-site. The Modified Project site is not within a designated wildlife corridor. 6.4.3 Discussion of Impacts a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife (CDFW) or United States Fish and Wildlife Service (USFWS)? New Less than Significant Impact with Mitigation Incorporated. Several trees within the Modified Project site could support nesting habitats for white-tailed kites. Common song birds (passerine birds) could also nest in the small trees and shrubs within the Modified Project area. All these birds are protected under the Migratory Bird Treaty Act (50 CFR 10.13) and their eggs and young area protected under California Fish and Game Code Section 3503 and 3503.5. Construction of the Modified Project would require removal of 49 trees. Potential impacts to nesting bird species from the Modified Project would include disturbance to nesting birds and possible death of adults and/or young. Impacts to nesting birds during construction of the Modified Project would be potentially significant. Implementation of Mitigation Measure BIO-1 would require pre-construction nesting bird surveys if construction must be conducted during nesting bird season (between March 1 and September 1). Impacts to nesting birds would be reduced to a less-than-significant level with implementation of Mitigation Measure BIO-1. There are several occurrences of pallid bat and mature trees within the Modified Project site.13 Mature trees may contain cavities or snags suitable for roosting. In addition, the residence within the Modified Project vicinity may provide marginal roosting habitat. Direct impacts to roosting special-status bat species could occur due to the removal or modification of large trees (diameter-at-breast height >24 inches) or snags, or building demolition associated with the Modified Project. Accordingly, impacts to pallid bat are potentially significant. Implementation of Mitigation Measure BIO-2 would require that tree removal and building demolition occur between October 1 and March 31, outside of maternity roosting season. A bat roost habitat assessment shall be conducted if tree removal or building demolition must occur between April 1 and September 30. Impacts to special-status bat species would be reduced to a less-than-significant level with implementation of Mitigation Measure BIO-2. Impacts would be less than significant with mitigation incorporated. Preparation of a subsequent EIR is not required. 13 WRA, Inc. Biological Resources Technical Report – 375 West El Pintado Road Project. June 2022. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 31 June 2022 b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the CDFW or USFWS? New Less than Significant Impact with Mitigation Incorporated. The Modified Project area includes sensitive natural communities: ephemeral streams, intermittent stream, and associated riparian vegetation. The Modified Project would result in impacts to 435 linear feet of channels, including the intermittent stream, open waters and the western ephemeral stream, totaling 0.04 acre. The total area of impact below the top-of-bank would be approximately 5,255 square feet (0.12 acre). In addition, the Modified Project would result in impacts to approximately 14 trees that would be considered riparian vegetation growing in association with the intermittent stream and western ephemeral stream located on-site. Impacts to sensitive natural communities, aquatic resources, and riparian vegetation would be potentially significant. Mitigation Measures BIO-3 to BIO-5 would require the applicant to obtain applicable permits from regulatory agencies regarding impacts to sensitive natural community and aquatic resources, and the applicant to replant trees at a mitigation ratio of 2:1 to offset the impacts of removing riparian vegetation. The impacts to sensitive natural communities, aquatic resources, and riparian vegetation would be less than significant with implementation of Mitigation Measures BIO-3 to BIO-5. Impacts would be less than significant with mitigation incorporated. Preparation of a subsequent EIR is not required. c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? New Less than Significant Impact with Mitigation Incorporated. As discussed above under Impact b), the Modified Project would result in impacts to 435 linear feet of channels. Approximately 5,255 square feet of below the top-of-bank area would be impacted by the Modified Project. The applicant would be required to implement Mitigation Measures BIO-3 to BIO-5 as discussed above to mitigate impacts to aquatic resources to a less-than-significant level. Impacts would be less than significant with mitigation incorporated. Preparation of a subsequent EIR is not required. d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? Lesser Impact than Approved Project. The Modified Project area does not provide connectivity between areas of suitable habitat. For terrestrial species, all portions of the Modified Project area are within a greater context of urban development; for aquatic species, there is no connectivity between the Modified Project area and upstream freshwater habitat. No impact would occur to migratory corridors for terrestrial and aquatic species. Preparation of a subsequent EIR is not required. e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? Same Impact as Approved Project. Local plans and polices related to biological resources include the following: Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 32 June 2022 Danville 2030 General Plan • Policy 21.01. Preserve and enhance natural habitat areas that support wildlife, including large continuous areas of open space and wetland and riparian habitat. • Policy 21.07. Ensure that local planning and development decisions do not damage the habitat of rare and endangered plant and animal species, consistent with state and federal law. • Policy 21.11. Protect the nests of raptors and other birds when in active use, as required by state Fish and Game Code and the federal Migratory Bird Treaty Act The Modified Project would comply with Danville 2030 General Plan policies pertaining to wetlands, streams, riparian areas (Policy 21.01), vegetation communities (Policy 21.01), plant species (Policy 21.07), and wildlife species (Policies 21.07 and 21.11). Town of Danville Municipal Code 32-79 Tree Preservation The Modified Project will remove 49 trees, including one (1) heritage tree and nine (9) protected trees from the Modified Project area. The Town of Danville requires a permit for the destruction and/or removal of protected trees on any property within the Town of Danville. The applicant would be required to comply with Mitigation Measures BIO-5 and BIO-6 identified in the 2018 EIR regarding tree replacement and protection. With implementation of 2018 EIR mitigation measures, impacts would be less than significant. Preparation of a subsequent EIR is not required. f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? Less Impact than Approved Project. The Modified Project would not conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or State habitat conservation plan as no applicable plans exist. No impact would occur. Preparation of a subsequent EIR is not required. 6.4.4 Mitigation Measures Modified Project Mitigation Measures BIO-1 Nesting Bird Protection Measure If Modified Project activities must be conducted during the nesting season (March 1 and September 1), a pre-construction nesting bird survey will be conducted by a qualified biologist no more than 7 days prior to vegetation removal or initial ground disturbance. The survey will include the project site and surrounding vicinity to identify the location and status of any nests that could potentially be affected either directly or indirectly by Project activities. If active nests of native nesting bird species are located during the nesting bird survey, a work exclusion zone will be established around each nest by the qualified biologist. Established exclusion zones will remain in place until all young in the nest have fledged or the nest otherwise becomes inactive (e.g., due to predation). Appropriate exclusion zone sizes will be determined by a qualified biologist and will vary based on species, nest location, existing visual buffers, noise levels, and other factors. An exclusion zone radius may be as small as 50 feet for common, disturbance-adapted species, or as large as 250 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 33 June 2022 feet or more for raptors. Exclusion zone size will be reduced from established levels by a qualified biologist if nest monitoring findings indicate that Project activities do not adversely impact the nest, and if a reduced exclusion zone would not adversely affect the nest. BIO-2 Roosting Bats Protection Measure To avoid impacts to roosting bats, tree removal and building demolition should occur between October 1 and March 31, outside of the maternity roosting season (when female bats may have dependent young). If tree removal or building demolition must occur between April 1 and September 30, a bat roost habitat assessment should be conducted by a qualified biologist. The bat roost habitat assessment would determine the likelihood of the Project site supporting roosting bats. If the assessment identifies suitable or potentially occupied roosts within the Project site, a pre-construction bat survey should be performed no more than 14 days prior to tree or building removal using site appropriate survey methods to determine if potential roost structures are occupied. If special-status bat species are detected during these surveys, appropriate, species and roost-specific mitigation measures will be implemented. Such measures may include postponing the removal of the trees or building until the end of the maternity roosting season, exclusionary work buffers, or consultation with CDFW. BIO-3 Permitting The Project will obtain a Section 404 Permit from the Corps and a Section 401 Water Quality Certification from the RWQCB prior to any impacts to waters of the U.S. and State. In addition, the Project will obtain a Lake and Streambed Alteration Agreement from the CDFW prior to impacts to CDFW jurisdictional stream channels or riparian habitats. The Project will prepare a Habitat Mitigation and Monitoring Plan (HMMP) to satisfy the requirements of the Corps, RWQCB and CDFW permits to achieve no net-loss of wetlands and waters of the U.S./State. All compliance measures included in the permits will be adhered to. BIO-4 Mitigation for Waters of the U.S. and State To mitigate for impacts to waters of the U.S. and State, the applicant proposes to construct 304 linear feet of main channel and 146 linear feet of meandering tributary channel. Approximately 1,300 square feet of wetlands are expected to develop along the mitigation channels and 2,553 square feet of seasonal wetlands are expected to become established within the floodplain, creating a total of 3,853 square feet (0.088 acre) of mitigation wetlands. The total mitigation area below top-of-bank will be 12,400 square feet (0.28 acre). This will provide 1:1 replacement for the total linear feet impacts and 2:1 replacement for the impacted acreage of in-channel wetlands. BIO-5 Riparian Vegetation Mitigation The Project will plant valley oak and willow trees to offset the removal of valley oak and willow trees from the riparian sensitive natural community. A replanting plan and a HMMP will be submitted to the City, Corps, RWQCB and CDFW for approval prior to project implementation. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 34 June 2022 2018 EIR Mitigation Measures Applicable to the Modified Project BIO-5 Tree Replacement The applicant shall comply with Town requirements (DMC Section 32-79), as applicable, to plant on-site or off-site replacement trees for removed protected trees which are of a cumulative diameter necessary to equal the diameter of trees approved for removal as determined by the Town’s Planning Division. For the non-Town protected trees that would be removed as part of the project, the applicant shall plant new minimum 15-gallon trees either on-site or off-site, as determined by the Town, at a 1:1 ratio. The exact locations and tree species shall be subject to review and approval by the Town’s Planning Division. BIO-6 Tree Protection The following measures shall be implemented prior to the start of construction for all trees not designated for removal. • Trees to be retained on-site shall be temporarily fenced with chain-link or other substantial, highly visible material while all grading and construction activities occur, including landscaping activities that require substantial ground disturbance (more than the use of hand tools). The fencing shall be five feet from the dripline of the canopy, at least six-feet high, staked to prevent collapse, and shall contain signs identifying the protection area. • When construction activities occur within five feet of the dripline, a certified arborist shall be on site to monitor and make recommendations. • All roots shall be cut cleanly, if possible, back to a lateral branching root. Cuts should be made at right angles to the roots. • If canopy trimming is needed it shall be done under the supervision of an International Society of Arboriculture (ISA) Certified Arborist and by an ISA Certified Tree Worker. Trees shall be pruned according to American National Standards Institute (ANSI) 300 standards. ANSI 300 provides guidelines for pruning trees and other woody plants. 6.4.5 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts to biological resources in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. !( !(!( !( W i n f i e l d L n W i n f i e l d L n W E lPin t a d o E l s i e D r W E l P in t a d o W El P i n t a d o ES 2 ES 1 IS 2 IS 1 U 2 U 1W1 W 2 37.828674, -122.001541 37.827856, -122.000094 Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ D e l i n 2 0 2 1 0 8 1 1 \ D e l i n 2 0 2 1 0 8 1 1 . a p r x Project Area (1.9 ac.) !( Sample Point Culvert Top of Bank Potential Waters of the United States and State Intermittent Stream with an In-Stream Seasonal Wetland (0.03 ac., 221 ln. ft) (Drainage B) Concrete Aprons/Open Water - (Non-vegetated Waters) (0.01 ac.) Ephemeral Stream -1' wide (.007 ac., 307 ln. ft.) (Drainages A and C) ES-1 and ES-2 Sources: ESRI World Imagery, WRA | Prepared By: czumwalt, 11/9/2021 0 10050 Feet Figure 4. Verified and Potential Jurisdictional Features in the Modified Project Area ± ID Type Acres Linear Feet IS-1 Intermittent Stream 0.001353 10 IS-2 Intermittent Stream 0.025188 211 ES-1 Ephemeral Stream 0.029115 135 ES-2 Ephemeral Stream 0.024827 172 Waters of the U.S. and State Administrative Draft Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 35 June 2022 Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 36 June 2022 6.5 Cultural Resources Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Cause a substantial adverse change in the significance of a historical resource pursuant to Section 15064.5? Yes b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064.5? Yes c) Disturb any human remains, including those interred outside of dedicated cemeteries? Yes 6.5.1 Summary of Impacts Identified in the 2018 EIR A discussion of the Cultural Resources impacts was included in Section V of Appendix A-Initial Study of the 2018 EIR (pp. 16 to pp. 18). The Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would have no impact on historical resources (Impact a, pp.16 of Appendix A) and would have a less-than-significant impact on archaeological resources and human remains with implementation of mitigation measures (Impacts b to d, pp. 16 to pp. 18).14 Two cultural resources studies were conducted within a 0.25-mile of the Approved Project site, and no cultural resources have been identified.15 Mitigation Measures CR-1 Cultural Resources Awareness Training, CR-2 Unanticipated Discovery of Cultural Remains, and CR-3 Unanticipated Discovery of Human Remains were included in the Appendix A- Initial Study in the event that any archaeological resources, paleontological resources, or human remains were encountered during construction to ensure that impact remained less than significant (pp. 17 to pp. 18 of Appendix A). 6.5.2 Environmental Setting A cultural resources field survey and a records search was conducted by Tom Origer & Associates for the Approved Project in 2014. The records search indicated that no cultural resources were found in the 14 Town of Danville. 375 West El Pintado Road Residential Project Draft Environmental Report. July 2018. 15 Tom Origer & Associates. November 5, 2014. A Cultural Resources Survey for the W. El Pintado Condominium Development Project. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 37 June 2022 immediate area of the Modified Project. One single-family residence that was built in 1973 exists on the southeast portion of the site. However, the residence consists of single-story, wood-framed building on a rectangular plan with a gabled roof. As stated in the 2018 EIR, field observations confirmed that the residence is a modern building and would not be considered a historical resource.16 6.5.3 Discussion of Impacts a) Cause a substantial adverse change in the significance of a historical resource pursuant to CEQA Guidelines Section 15064.5? Same Impact as Approved Project. As discussed above, there are no historic resources within or adjacent to the Modified Project site. No historical resource would be demolished or materially altered. Therefore, no new significant impacts concerning change in the significance of a historic resource would occur as a result of the Modified Project, consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. b) and c) Cause a substantial adverse change in the significance of an archaeological resource pursuant to CEQA Guidelines Section 15064.5? Disturb any human remains, including those interred outside of dedicated cemeteries? Same Impact as Approved Project. The Modified Project would involve development on the same area, as analyzed in Appendix A of the 2018 EIR, with the addition of 16 residential units. Construction of the Modified Project would also involve similar subsurface ground disturbance as the Approved Project, and therefore would have similar potential for encountering and/or altering unknown archaeological resources or human remains. Accordingly, the Modified Project would be required to implement 2018 EIR Mitigation Measures CR-1 to CR-3 pertaining to worker training and procedures to handle unanticipated discovery of cultural and human remains. Therefore, no new significant impact concerning archaeological resources or human remains would occur, nor would previously identified impacts be made more severe, as a result of the Modified Project. A less-than-significant impact would occur with implementation of 2018 EIR Mitigation Measures CR-1 to CR-3, consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.5.4 2018 EIR Mitigation Measures Applicable to the Modified Project CR-1 Cultural Resources Awareness Training. Prior to the commencement of ground disturbance, including site preparation and grading activities, the applicant will ensure that all construction workers are trained to recognize archaeological resources (e.g., obsidian and chert flakes and chipped stone tools; grinding and mashing implements such as slabs and handstones, and mortars and pestles; bedrock outcrops and boulders with mortar cups; and locally darkened midden soils containing some of the previously listed items plus fragments of bone, shellfish, and fire affected stones; fragments of glass, ceramic, and metal objects; milled and split lumber; and structure and feature remains such as building foundations and discrete trash deposits). The cultural resources awareness training shall be conducted by a qualified professional archaeologist with experience in training non-specialists. A record of completion of cultural resources awareness training for all construction workers shall be submitted to the Town of Danville 16 Ibid. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 38 June 2022 prior to the issuance of a grading permit, and a copy of the training completion record shall be maintained on-site for the duration of construction activities. CR-2 Unanticipated Discovery of Cultural Remains. If previously unidentified cultural resources are encountered during construction or land disturbance activities, work shall stop within 50 feet of the find and the Town of Danville shall be notified at once to assess the nature, extent, and potential significance of any cultural resource find. The applicant shall retain a qualified archaeologist to implement a Phase II subsurface testing program to determine the resource boundaries, assess the integrity of the resource, and evaluate the resource’s significance through a study of its features and artifacts. If the resource is determined significant, the Town of Danville may choose to allow the capping of the area containing the resource using culturally sterile and chemically neutral fill material. If such capping occurs, then a qualified archaeologist shall be retained to monitor the placement of fill upon the resource. If a significant resource will not be capped, the results and recommendations of the Phase II study shall determine the need for a Phase III data recovery program designed to record and remove significant cultural materials that could otherwise be tampered with. If the resource is determined to be not significant, no capping and/ or further archaeological investigation or mitigation shall be required. The results and recommendations of the Phase II study shall determine the need for construction monitoring. If monitoring is warranted, a qualified archaeologist shall be retained by the applicant to be present during all earth moving activities that have the potential to affect archaeological or historical resources. A monitoring report shall be submitted to the Town upon completion of construction. CR-3 Unanticipated Discovery of Human Remains. If previously unidentified human remains are encountered during project construction, State Health and Safety Code Section 7050.5 shall be adhered to, which requires that no further disturbance shall occur until the County Coroner has made the necessary findings as to origin and disposition pursuant to Public Resources Code Section 5097.98. If the remains are determined to be of Native American descent, the Coroner has 24 hours to notify the NAHC. The NAHC would then identify the person(s) thought to be the Most Likely Descendent (MLD) of the deceased Native American, who would then help determine what course of action should be taken in dealing with the remains. 6.5.5 Conclusion The proposed modifications would not cause a substantial adverse change in the significance of a historical or archaeological resource or disturb any human remains from what was previously analyzed in the 2018 EIR. Accordingly, the Town of Danville finds that following. • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 39 June 2022 6.6 Energy Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation? Yes b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency? Yes 6.6.1 Summary of Impacts Identified in the 2018 EIR A discussion of impacts on energy resulting from the Approved Project is provided in Section 5.4 Energy Effects of the 2018 EIR (pp. 191 to pp. 192). The 2018 EIR determined that adherence to the Town’s green building and energy conservation requirements, energy conservation requirements of the California Energy Code, and the California Green Building Standard Code would ensure that the Approved Project would not use energy in an inefficient or wasteful manner. 6.6.2 Environmental Setting Electrical service for residents and businesses in the Town of Danville is provided by Pacific Gas and Electric Company (PG&E). PG&E has generated a growing share of the region’s electricity from renewable, non- polluting energy sources during the past decade. PG&E continues to pursue alternatives to fossil fuels, such as solar and wind power. The Town of Danville works with PGE&E to encourage substantial reductions in energy usage, and to support energy audits which indicate ways to improve energy efficiency.17 6.6.3 Discussion of Impacts a) Result in a potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation? Same Impact as Approved Project. The Modified Project would involve the use of energy during construction and operation. During construction, energy use would be in the form of fuel consumption (e.g., gasoline and diesel fuel) to operate heavy equipment, light-duty vehicles, machinery, and a generator for lighting. Temporary grid power may also be used to operate any temporary construction 17 Town of Danville. The 2030 General Plan. Adopted March 19, 2013. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 40 June 2022 trailers or electric construction equipment. Contractors would be subject to compliance with California Code of Regulations (CCR), Title 13, Chapter 9, Article 4.8 Section 2449, which requires minimizing non- essential idling of construction equipment during construction. Compliance with CCR Section 2449 would limit wasteful and unnecessary energy consumption. Construction vehicles would comply with federal and State standards for on- and off-road vehicles (e.g., emission standards set by the California Air Resources Board), which prevent wasteful, inefficient, or unnecessary consumption of energy resources. Long-term operation of the Modified Project would require permanent grid connections for electricity and natural gas service provided by PG&E to power interior and exterior building lighting, and heating and cooling systems. The Modified Project would be required to meet all current building standards including the 2019 California Energy Code (Title 24, Part 6 of the CCR) and the 2019 California Green Building Standards Code (CALGreen) (Title 24, Part 11 of the CCR). The California Energy Code provides energy conservation standards for all new and renovated commercial and residential buildings constructed in California. The CALGreen standards include green building thresholds in the areas of site development, water efficiency, energy efficiency, green materials, and indoor air quality.18 The Modified Project would comply with the California Energy Code and the CALGreen standards and therefore would not result in potentially significant environment impacts due to wasteful, inefficient, or unnecessary consumption of energy resources. The impact would be less than significant and consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency? Same Impact as Approved Project. The Modified Project would not conflict with any State or local plans for renewable energy or energy efficiency. The Town of Danville conducts plan checking as part of the building permit process. Plans for new or altered buildings are reviewed to ensure that they comply with State energy efficiency standards and CALGreen standards.19 Thus, the Modified Project would not obstruct or prevent plans for renewable energy or energy efficiency. The impact would be less than significant and consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.6.4 Conclusion The proposed modification would not have an effect on energy. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. 18 California Building Standards Commission. 2019 California Green Building Standards Code, CCR Title 24, Part 11. Website: https://calgreenenergyservices.com/wp/wp-content/uploads/2019_california_green_code.pdf. Accessed October 6, 2021. 19 Town of Danville. The 2030 General Plan. Adopted March 19, 2013. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 41 June 2022 6.7 Geology and Soils Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Yes ii) Strong seismic ground shaking? Yes iii) Seismic-related ground failure, including liquefaction? Yes iv) Landslides? Yes b) Result in substantial soil erosion or the loss of topsoil? Yes c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse? Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 42 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code, creating substantial direct or indirect risks to life or property? Yes e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? Yes f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? Yes 6.7.1 Summary of Impacts Identified in the 2018 EIR Impacts to geology and soils were discussed in Section VI of the Appendix A-Initial Study of the 2018 EIR (pp. 19 to pp. 22). The Appendix A-Initial Study concluded that no earthquake faults delineated on Alquist- Priolo Fault Zone maps within the Approved Project area (Impact a.i, pp. 19). The Approved Project would not include construction of a septic system. Thus, no impact related to septic tanks or alternative wastewater disposal systems would occur (Impact e, pp. 22). As with any site in the Bay Area region, the Approved Project site is susceptible to strong seismic ground shaking in the event of a major earthquake. Adherence to the seismic design and standards set forth in the California Building Code would reduce the Approved Project’s impacts related to surface fault rupture hazard to a less-than-significant level (Impact a.ii, pp. 19). The Approved Project would be required to comply with erosion control standards administrated by the San Francisco Bay RWQCB through the National Pollutant Discharge Elimination System (NPDES) permit process. A Stormwater Pollution Prevention Plan (SWPPP) with best management practices (BMPs) would be implemented for erosion control. In compliance with the stipulations in the NPDES permit and implementation of BMPs required in the SWPPP, the Approved Project would have a less-than-significant impact related to soil erosion or loss of topsoil (Impact b, pp. 20 to pp. 21). The Appendix A-Initial Study concluded that the Approved Project would result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse and would create risks to life or property due to site topography and on-site soil characteristics (Impact c and d, pp. 21 to pp. 22). However, with Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 43 June 2022 implementation of Mitigation Measure GEO-1 and adherence to the California Building Code requirements, the risk of structural damage or injury from landslides, lateral spreading, subsidence, liquefaction, expansive soils, or collapse would be less than significant. 6.7.2 Environmental Setting The Modified Project has the same environmental setting as the Approved Project, including fault rupture, seismic ground shaking, liquefaction, unstable soils, landslides, and expansive soils. As discussed in Section VI, Geology and Soils of the Appendix A-Initial Study, the site is not located within a known earthquake fault that is included in the most recent Alquist-Priolo Earthquake Fault Zoning map. The site is not located within a potential liquefaction zone or landslide hazard area. Geotechnical exploratory test borings performed in [year] identified loose sands, silts, and low plasticity clays on the northwest corner of the site. 6.7.3 Discussion of Impacts a-i) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Same Impact as Approved Project. The Modified Project is located within the same area as the Approved Proejct and would not be located on or near an Alquist-Priolo Earthquake Fault Zone. The Modified Project would not cause potential substantial adverse effects involving rupture of a known earthquake fault. Therefore, no new significant impactswith respect to the risk of loss or death as a result of surface fault rupture would occur as a result of the Modified Project. The Modified Project would result in no new impacts concerning earthquake fault hazards, consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. a-ii) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: Strong seismic ground shaking? Same Impact as Approved Project. The Modified Project would be located on the same project site as the Approved Project. As with the Approved Project, the Modified Project site would be susceptible to strong seismic gorund shaking in the event of a major earthquake. The Modified Project would be designed in accordance with the most current California Building Code requirements that address structural seismic safety. The CBC includes design criteria for seismic loading and other geologic hazards, including loading that governs seizing of structural members and other required design criteria. Thus, the Modified Project would result in a less-than-significant impact in compliance to the most current CBC requriements, as stated in the Appendix A-Intial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. a-iii) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: Seismic-related ground failure, including liquefaction? Same Impact as Approved Project. The Appendix A-Intitial Study of the 2018 EIR concluded that liquefaction is a condition that occurs when unconsolidated, saturated soils change to near-lequid state during strong groundskaking. As discussed in Impact a.iii) of the Intial Study, a geotechnical exploratory test boring located in the northwest corner of the site has encountered loose sands, silts, and low plasticity clays that are potentially liquefiable (pp. 20). The Modified Project would be required to comply with Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 44 June 2022 applicable provisions for construction in a liquefaction zone of the most current CBC. Adherence to Chapter 18 of the CBC , which addresses soil hazards including liquefaction, would ensure that liquefaction impacts would be less than significant. The Modified Project would result in less than signficant impact concerning seismic-related ground failure consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. a-iv) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: Landslides? Same Impact as Approved Project. Landslides are typically a hazard on or near slopes or hillside areas and can be triggered by earthquakes. The Modified Project site is not located within a landslide hazard area and has moderately rolling topography as discussed in Section VI. Geology and Soils Impact a.iv) in Appendix A-Inital Study of the 2018 EIR (pp. 20). No slopes on or adjacent to the site are high or steep enough to constitute signficant landslide hazards. In addition, the Modified Project would be required to meet the CBC requirements regarding Project engineering for soil stability. For these reasons, the Modified Project would not result in a change to the less than signficant finding in Appendix A-Intial Study of the 2018 EIR regarding the potential impacts from the threat of landslides on the site. Preparation of a subsequent EIR is not required. b) Result in substantial soil erosion or the loss of topsoil? Same Impact as Approved Project. As discussed in Section VI. Geology and Soils Impact b) in Appendix A- Initial Study of the 2018 EIR (pp. 20 and pp. 21.), erosion and loss of topsoil has the highest potential to occur during ground-disturbing activities. Ground-disturbing activities would include grading, building pads, access roads, and utility trenches. Similar to the Approved Project, the Modified Project would be required to comply with Chapter XIX of the Danville Municipal Code to obtain a Grading Permit and an Erosion Control Permit and meet conditions as specified in the permits, including preparing an erosion control plan with BMPs to minimize on-site erosion and off-site sedimentation. In addition, the Modified Project would be required to obtain a NPDES permit, which requires implementation of a project-specific SWPPP with BMPs identified. The Modified Project would have a less-than-significant impact related to erosion and loss of topsoil, consistent with the finding in Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. c) and d) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse? Be located on expansive soil, as defined in Table 18 1 B of the Uniform Building Code, creating substantial direct or indirect risks to life or property? Same Impact as Approved Project. As discussed in Section VI. Geology and Soils in Appendix A-Initial Study of the 2018 EIR, portions of the site would be subject to liquefaction, and most of the site is covered with layers of several clayey fill soils that have an expansion potential ranging from moderate to very high (Impact d, pp. 21). The site slopes moderately to the west. The Appendix A-Initial Study concluded that compliance with CBC requirements for foundation design for building constructed on expansive soils would ensure protection of structures and occupants from impacts related to expansive soils. The Appendix A-Initial Study also concluded that the site would be subject to lateral spreading and liquefaction during seismic events due to the site’s topography and the presence of liquefiable soils. Site preparation, such as soil, compaction, excavation of liquefiable soils, installation of subsurface drainage, and placement Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 45 June 2022 of structural fill would reduce the potential for liquefaction. In addition, implementation of Mitigation Measure GEO-1 would require preparation of a design-level geotechnical investigation and incorporation of an appropriate foundation design based on the geotechnical recommendations. In accordance with CBC requirements and implementation of Mitigation Measure GEO-1, impacts related to structural damage or injury due from an unstable geologic unit or expansive soils would be less than significant. The Modified Project would be located on the same footprint as the Approved Project and would be required to comply with CBC requirements and implement Mitigation Measure GEO-1. For these reasons, the Modified Project would not result in a change in the finding of a less-than-significant impact with mitigation incorporated as stated in Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? Same Impact as Approved Project. No septic tanks or alternative wastewater disposal systems are proposed for the Modified Project. The Modified Project would be connected to the local wastewater treatment system. There would be no impacts, consistent consistent with the finding in Apendix A-Intial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? Same Impact as Approved Project. Impacts to unique paleontological resources or site or unique geologic features was discussed in Section V. Cultural Resources in the Appendix A-Initial Study of the 2018 EIR (Impact b-d), pp. 16 to pp.18). The Appendix A-Initial Study concluded that development on the site would have the potential for discovery of previously unidentified unique geologic feature. Mitigation Measures CR-1 through CR-3 would be required to reduce impacts to previously unidentified cultural resources including geologic feature. Preparation of a subsequent EIR is not required. 6.7.4 2018 EIR Mitigation Measures Applicable to the Modified Project GEO-1 Design-Level Geotechnical Investigation. In accordance with the recommendations of the preliminary geotechnical investigation, the applicant shall conduct a design-level geotechnical investigation. The design-level geotechnical investigation shall include additional field exploration and laboratory testing. Soil borings and/or cone penetration tests (CPT) soundings shall be conducted to evaluate the potential for liquefaction in the area of the preliminary geotechnical investigation Boring 2. The recommendations of the design-level geotechnical investigation shall be incorporated into the proposed project grading and building plans after review and approval by the Town’s Building Services Division. These recommendations may include the removal of expansive soils, replacing expansive soils with non-expansive engineered fill, deepening foundations to develop support below the zone of significant seasonal moisture change, designing foundation/slab systems to resist uplift pressures generated by swelling soils, providing drainage and landscaping to minimize seasonal moisture fluctuations in the near-surface soils, compacting soils to the appropriate relative compaction, and designing foundations to resist the adverse effects of liquefaction and corrosive soils. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 46 June 2022 6.7.5 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to geology and soils in the 2018 EIR. Accordingly, the Town of Danville finds that following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 47 June 2022 6.8 Greenhouse Gas Emissions Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? Yes b) Conflict with any applicable plan, policy, or regulation of an agency adopted for the purpose of reducing the emissions of greenhouse gases? Yes 6.8.1 Summary of Impacts Identified in the 2018 EIR: Impacts to greenhouse gas (GHG) emissions were discussed in Section 4.4 of the 2018 EIR (pp. 103 to pp. 114). The 2018 EIR determined that the Approved Project would be consistent with applicable GHG reduction plans and would emit 329 metric tons of CO2e per year, which is below the BAAQMD threshold of 1,034 metric tons per year for 2020 (adjusted per Senate Bill [SB] 32). 20 Therefore, the Approved Project would have a less-than-significant impact with respect to GHG emissions. 6.8.2 Environmental Setting Assembly Bill (AB) 32, adopted in 2006, established the Global Warming Solutions Act of 2006 which requires the State to reduce GHG emissions to 1990 levels by 2020. Senate Bill 97, adopted in 2007, required the Governor’s Office of Planning and Research to develop CEQA guidelines “for the mitigation of greenhouse gas emissions or the effects of greenhouse gas emissions,” and the Resources Agency certified and adopted the amendments to the guidelines on December 30, 2009. On September 8, 2016, the governor signed SB 32 into law, extending AB 32 by requiring the State to further reduce GHG emissions to 40 percent below 1990 levels by 2030. GHGs are recognized by wide consensus among the scientific community to contribute to global warming/climate change and associated environmental impacts. The major GHGs released from human activity are carbon dioxide, methane, and nitrous oxide (Governor’s Office of Planning and Research 2008). The primary sources of GHGs are vehicles (including planes and trains), energy plants, and industrial and agricultural activities (such as dairies and hog farms). The primary sources of GHGs from the project site are vehicles and operational emissions associated with a residence. 20 CO2e or carbon dioxide equivalent is the combination of the pollutants that contribute to climate change adjusted using their global warming potential in terms of carbon dioxide. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 48 June 2022 6.8.3 Discussion of Impacts a) and b) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? Conflict with any applicable plan, policy, or regulation of an agency adopted for the purpose of reducing the emissions of greenhouse gases? Same Impact as Approved Project. The Modified Project would result in construction and operation of an additional 16 units compared to the Approved Project. As with the Approved Project, the Modified Project would have the potential to generate GHG emissions during construction and operational activities. Construction and operation of the additional 16 units would incrementally result in an increase in GHG emissions. However, the increase in emission would be negligible and would not exceed the BAAQMD threshold of 1,034 metric tons per year for 2030, in accordance with the GHG reductions required by SB 32. The Town of Danville adopted a Climate Action Plan in May 2009 and a Sustainability Action Plan in 2013. The preliminary actions identified in the Climate Action Plan were explored and built upon in the Town’s 2030 General Plan and Sustainability Action Plan (concurrently adopted in 2013). The Sustainability Action Plan serves as a Qualified GHG Reduction Strategy consistent with State CEQA Guidelines and BAAQMD CEQA Guidelines. As with the Approved Project, the Modified Project would be consistent with the applicable goals and measures identified in the Town of Danville Sustainability Action Plan (Table 16 of the 2018 EIR, pp. 111). Consistent with the findings in the 2018 EIR, the Modified Project would not generate GHG emissions, either directly or indirectly, that may have a significant impact on the environment; and would not conflict with an applicable plan, policy, or regulation adopted for the purpose of reducing GHG emissions. Preparation of a subsequent EIR is not required. 6.8.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to GHG emissions in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 49 June 2022 6.9 Hazards and Hazardous Materials Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? Yes b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? Yes c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? Yes d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? Yes e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area? Yes f) Impair implementation of or physically interfere with an Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 50 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? adopted emergency response plan or emergency evacuation plan? g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? Yes 6.9.1 Summary of Impacts Identified in the 2018 EIR Impacts related to hazardous and hazardous materials were discussed in Appendix A-Initial Study of the 2018 EIR (pp. 23 to pp. 26). The Appendix A-Initial Study analyzed the potential impacts to hazards and hazardous materials that could occur as a result of implementing the Approved Project. The Appendix A- Initial Study determined that the Approved Project would have less than significant impacts related to the use, storage, and transport of hazardous materials, the risk of accidental release of hazardous materials, and the use of hazardous materials near schools because the Approved Project would comply with applicable regulations to storage and transport hazardous materials and would implement best management practices to contain and clean up any accidental spills or leaks (Impacts a to c, pp. 24 to pp. 25). The Approved Project would not interfere with an adopted emergency response plan or emergency evacuation plan. The site is located within an area subject to wildland fire (Impact h, pp. 26). The Initial Study also determined that the Approved Project is neither located on a site which is included on a list of hazardous materials sites complied pursuant to Government Code Section 65962.5 or near an airport; thus, no impacts would occur in relationship to hazardous sites or airports (Impact d to f, pp. 25 to pp. 26). 6.9.2 Environmental Setting The environmental setting for hazards and hazardous materials is the same as described in the 2018 EIR Appendix A-Initial Study. The Modified Project site is neither located on or near a hazardous materials site nor located within an airport land use plan or within two (2) miles of a public airport or public use airport. The nearest school is the St. Isidore School located approximately 0.1 mile west-southwest of the site. The Modified Project is located within a Wildfire Threat area designated as Very High Threat to Development as identified in the Town’s 2030 General Plan, but not within a High Fire Hazards Severity Zone or a Very High Fire Hazard Severity Zone as shown on California Department of Forestry and Fire Protection’s (CAL FIRE’s) Fire Hazard Severity Zones Maps. 21,22 6.9.3 Discussion of Impacts a) and b) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? Create a significant hazard to the public or the 21 Town of Danville, The 2030 General Plan, Chapter 6 Resources and Hazards – Figure 22. 22 CAL FIRE. FHSZ Viewer. Website: https://egis.fire.ca.gov/FHSZ/. Accessed September 23, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 51 June 2022 environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? Same Impact as Approved Project. Consistent with the Appendix A-Initial Study, operation of the Modified Project would only use or store minor amounts of hazardous materials for cleaning, maintenance, and landscaping. Therefore, operation of the Modified Project would not involve the use, storage, transportation, disposal, or spill of hazardous materials that would create a significant impact to the public or environment. Construction of the Modified Project would occur within the area same analyzed in the Appendix A-Initial Study, would involve similar types of construction as what was analyzed in the Initial Study, would use the same hazardous materials, and would be subject to similar conditions with respect to hazards and hazardous materials as what was analyzed in the Initial Study. Therefore, the Modified Project would not introduce any hazardous materials that were not analyzed previously in the Appendix A-Initial Study and would not result in a new or substantially greater significant impact with regard to hazards and hazardous materials. Construction of the Modified Project would be consistent with the findings made in the Appendix A-Initial Study. Preparation of a subsequent EIR is not required. c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? Same Impact as Approved Project. The closest school to the Modified Project site is the St. Isidore School located approximately 0.1-mile to the west-southwest. The use of hazardous materials associated with construction and operation of the Modified Project would be confined to the site and access routes to the site. Vehicles transporting hazardous materials would not be expected to pass by the school, as access to the site would be provided by I-680 located to the east. In addition, the school is separated by single- and multifamily residences. The probability that school children would be exposed to hazardous materials associated with the Modifed Project would be low. In addition, the Modified Project would be required to develop a project-specific SWPPP, which would include BMPs, to contain and clean up any accidential spills or leaks. The impact would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? Same Impact as Approved Project. As identified in the Appendix A-Initial Study, the Modified Project is not located within 0.25-mile of known hazardous materials contamination sites.23 No impact would occur, consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area? Same Impact as Approved Project. As noted in the Appendix A-Initial Study, the Modified Project is not located within an airport land use plan or within two (2) miles of a public airport or public use airport. No 23 State Water Resources Control Board. GeoTracker. Website: https://geotracker.waterboards.ca.gov/map/?CMD=runreport&myaddress=Sacramento. Accessed October 12, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 52 June 2022 impact would occur, consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? Same Impact as Approved Project. The Modifed Project would not impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan. The Modified Project would comply with the California Fire Code requirements for emergency access and would not include changes that could potentially interfere with an emergency plan or an emergency evacuation plan. The impact would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? Same Impact as Approved Project. As discussed in Section 6.9.2, Environmental Setting in Hazardous Materials, the Modified Project site is located within an area designated as Very High Threat to Development as identified in the Town’s 2030 General Plan. The majority of the Town is located within the same Wildfire Threat area. The Modified Project site is not located in a High Fire Hazard Severity Zone or in a Very High Fire Hazard Severity Zone as mapped by CAL FIRE. The site is within an urban area and is surrounded by existing development. I-680 is east of the site, and would serve as a fire break in the event of a wildfire. No wildlands are immediately adjacent to the site. The impact related to wildland fire would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.9.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to hazards and hazardous materials in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 53 June 2022 6.10 Hydrology and Water Quality Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? Yes b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? Yes c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: i) result in substantial erosion or siltation on- or off- site; Yes ii) substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site; Yes iii) create or contribute runoff water that would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff; or Yes iv) impede or redirect flood flows? Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 54 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? Yes e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? No 6.10.1 Summary of Impacts Identified in the 2018 EIR Impacts to hydrology and water quality were discussed in Section 4.5 of the 2018 EIR (pp. 115 to pp. 128) and in Section IX of Appendix A-Initial Study of the 2018 EIR (pp. 26 and pp. 28). The 2018 EIR determined that construction and operation of the Approved Project would potentially result in an increase in pollutant discharges to waters of the State, but the impact would be reduced to a less-than-significant level with implementation of Mitigation Measures BIO-2 to BIO-4 (Impact HWQ-1, pp. 124 to pp.125). The 2018 EIR also determined that the Approved Project would have less-than-significant impacts related to altering the existing drainage pattern and creating runoff that would exceed the capacity of existing or planned stormwater drainage with implementation of stormwater control and drainage plans (Impact HWQ-2, pp. 126 to pp. 127). Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would have no impacts related to flood hazards and inundation by seiche, tsunami, or mudflow; and would have a less-than-significant impact related to depleting groundwater supplies or interfering with groundwater recharge (Impacts b, g-j, pp. 28). 6.10.2 Environmental Setting The environmental setting for hydrology and water quality is the same as described in the 2018 EIR. The Modified Project site lies within the San Francisco Bay Hydrologic Region, the Suisun Bay hydrologic unit, and the Concord hydrologic area and the Walnut Creek hydrologic subarea.24 The Town of Danville is underlain by the San Ramon Valley Groundwater Basin. Most of the Town is not subject to flooding from either a 100-year or 500-year flood event. The Modified Project site is approximately 15 miles away from the San Francisco Bay and would not be inundated by a tsunami. 6.10.3 Discussion of Impacts a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? Same Impact as Approved Project. The change proposed by the Modified Project would not result in more intense or extensive construction or operational activities that have the potential to degrade water quality 24 California Department of Transportation. Caltrans Water Quality Planning Tool. Website: http://svctenvims.dot.ca.gov/wqpt/wqpt.aspx. Accessed October 12, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 55 June 2022 in downstream water bodies. Accordingly, the Modified Project would not result in changes to the analysis or conclusions in the 2018 EIR. As with the Approved Project, the Modified Project would be subject to the National Pollutant Discharge Elimination System (NPDES) General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (Order No. 2012-0006-DWQ) adopted by the State Water Resources Control Board. The Modified Project would be required to meet the NPDES General Permit conditions, including development of a project-specific SWPPP with BMPs to control sediment and erosion during construction. The Modified Project would also be required to comply with Danville Municipal Code Chapter 19 (Grading Ordinance) and Chapter 20 (Stormwater Management and Discharge Control Ordinance) regarding stormwater discharge and construction site stormwater runoff control. In addition, the Modified Project would implement Mitigation Measures BIO-3 and BIO-4 to obtain necessary permits and mitigation agreements from the appropriate resource agency to ensure that water quality impacts to existing on-site drainage would be less than significant. During operation, rooftop and surface drainage would be collected through underground pipes and directed to stormwater treatment devices including bioretention areas, flow-through planter, and pervious pavers. Illicit discharges to the municipal stormwater system are prohibited by the Danville Municipal Code. The Modified Project comply with the Danville Municipal Code and the Town’s 2030 General Plan polices regarding maximizing permeable surface and infiltration on-site, minimizing stormwater runoff, and preventing or remediating illicit discharges of pollutants to the municipal stormwater conveyance system. With implementation of applicable laws and regulations, the Modified Project would not violate water quality standards or contribute additional sources of polluted runoff. Impacts to water quality would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? Same Impact as Approved Project. Consistent with the discussion and analysis in the Appendix A-Initial Study, the Modified Proejct would be served by the existing potable water service provided by East Bay Municipal Unitlity District (EBMUD) and would result in an increase impervious surface on-site. The amount of new impervious surface would be less under the Modified Project compared to the Approved Project, would be small compared to the surface area of the watershed and would not substantially alter the regional gorundwater recharge capacity or adversely affect groundwater levels. The Modifed Proejct would not include installation of new groundwater wells or use of groundwater from an existing well. Therefore, the impacts related to groundwater supplies and recharge would be less than signficant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: (i) result in substantial erosion or siltation on- or off-site; (ii) substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site; (iii) create or contribute runoff water that would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff; or (iv) impede or redirect flood flows? Same Impact as Approved Project. Similar to the Approved Project, development of the Modified Project would alter the site’s drainage, such as extending existing culverts beneath the site, changing ground surface permeability from the introduction of impervious surfaces (rooftops), and changing topography from grading and excavation. The Danville Grading Ordinance establishes controls on the earthwork permitted by the Town during construction and requires that an erosion-control permit be obtained prior Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 56 June 2022 to the start of construction activities. The grading permit and erosion control permit together require structural design elements and best management practices to control erosion and maintain proper drainage on- and off-site. Danville’s Stormwater Management and Discharge Control Ordinance implements the Town’s NPDES permit by requiring appropriate source control and site design measures and stormwater treatment measures for development projects. The San Francisco Bay RWQCB Municipal Regional Stormwater Permit prohibits the discharge of non-stormwater effluent into storm drain systems and watercourses and requires appropriate source control, site design, and stormwater treatment measures in new development and redevelopment projects to address both soluble and insoluble stormwater runoff pollutant discharges and prevent increases in runoff flows from new development and redevelopment projects. The Modified Project would be required to comply with the Danville Municipal Code and the San Francisco Bay RWQCB Municipal Regional Stormwater Permit to ensure that post- development off-site runoff amounts would not exceed pre-development conditions. Complying to exsisting regulations would ensure that the Modified Project would not result in subtantial erosion, siltation, or flooding on- or off-site and would not create or contribute runoff water that would exceed the capacity of existing or planned stormwater systems. The impacts would be less than signficant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? Same Impact as Approved Project. The Modified Project site is not located within a 100-year flood hazard area.25 Flooding hazards in the Town of Danville are generally limited to areas along major creeks and the confluence of creeks during winter rains. The Modified Project site would not be affected by flooding, and the proposed structures would not obstruct flood flows. The site is located approximately 15 miles from the San Francisco Bay and is not located in a tsunami hazard zone.26 There are no lakes within the vicinity of the Modified Project, and there is not risk of inundation by seiche. Consistent with the findings of the Approved Project in the Appendix A-Initial Study of the 2018 EIR, the Modified Project would not result in impacts related to flood hazards,tsunamis, or seiches. Preparation of a subsequent EIR is not required. e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? New Less than Significant Impact. The Modified Project is located within the San Ramon Valley Groundwater Basin which has a groundwater basin prioritization category of Very Low. 27 No groundwater quality impairments have been documented for the San Ramon Valley Groundwater Basin.28 The Modified Project is located within the San Francisco Bay Basin. The San Francisco Bay Basin Water Quality Control Plan (Basin Plan) identifies beneficial water uses and water quality objectives to protect the designated beneficial water uses, identify strategies, and create time schedules to achieve the water quality objectives. Water quality objectives for surface waters encompass features such as bacteria levels, 25 FEMA. FEMA Flood Maps Service Center. Website: https://msc.fema.gov/portal/search?AddressQuery=375%20west%20el%20pintado%2C%20danville#searchresultsanchor. Accessed September 23, 2021. 26 California Department of Conservation. Contra Costa County Tsunami Hazard Areas. Website: https://www.conservation.ca.gov/cgs/tsunami/maps/contra-costa. Accessed October 12, 2021. 27 SGMA Basin Prioritization Dashboard. Website: https://gis.water.ca.gov/app/bp-dashboard/final/. Accessed October 12, 2021. 28 California Department of Water Resources. California’s Groundwater Bulletin 118 – San Ramon Valley Groundwater Basin. February 27, 2004. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 57 June 2022 sediment, pH, and temperature. Strategies include identifying Total Maximum Daily Loads required by the Clean Water Act for waterbodies where water quality standards are not currently met. A project could interfere with the Basin Plan by degrading water quality in such a way that water quality objectives or strategies are not met, and beneficial uses are adversely affected or not achieve. Within the Town of Danville, the Basin Plan identifies beneficial uses for San Ramon Creek, including warm freshwater habitat, wildlife habitat, water contact recreation, and non-contact water recreation.29 Project impacts to surface and groundwater quality are discussed in Impact a) above. Release of sediment and chemicals from the site could conflict with the beneficial uses identified for San Ramon Creek in the Basin Plan. Implementation of the erosion control measures required by the Town of Danville and identified in the required SWPPP would minimize impacts to water quality as discussed in Impact a). The impact from conflict with the Basin Plan would be less than significant. Preparation of a subsequent EIR is not required. 6.10.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to hydrology and water quality in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. 29 San Francisco Bay RWQCB. Water Quality Plan for the San Francisco Bay Bain. July 14, 2010. Website: https://www.waterboards.ca.gov/sanfranciscobay/basin_planning.html. Accessed October 12, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 58 June 2022 6.11 Land Use and Planning Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Physically divide an established community? Yes b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? Yes 6.11.1 Summary of Impacts Identified in the 2018 EIR Impacts to land use and planning were discussed in Section 4.6 of the 2018 EIR (pp. 129 to pp. 140) and Section X of Appendix A-Initial Study of the 2018 EIR (pp. 29 to pp. 30). The 2018 EIR determined that the Approved Project would have a less-than-significant impact with respect to conflicts with land use plans, policies, and regulations upon approval of the proposed General plan Amendment and Preliminary Development Plan – Rezoning Request (Impact LU-1, pp. 135 to pp.138). Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would have a less-than-significant impact related to dividing an established community because no new roads, linear infrastructure, or other development features are proposed that would divide an established community (Impact a, pp.29). 6.11.2 Environmental Setting The Modified Project site is designated Mixed Use with approval of the General Plan Amendment (GPA015-0001) and is zoned P-1 with approval of the Preliminary Development Plan – Rezoning Request (PUD2015-0001). The Mixed Use land use designation provides opportunities for residential development within established Special Concern Areas and allows for development of 20 to 25 dwelling units per acre. The P-1 zone is intended for large scale development with a mixture of land uses or types of housing products, or on smaller parcels where special characteristics of the site merit would benefit from flexible zoning considerations. 6.11.3 Discussion of Impacts a) Physically divide an established community? Same Impact as Approved Project. The Modified Project would include development of 57 senior housing units on a mostly vacant lot. No new roads, linear infrastructure, or other development features are proposed that would divide an established commmuntiy or limit movement, travel, or social interactions between established land uses. Implementation of the Modified Project would continue the existing residential development pattern in the neighborhood, and would not cut off connected neighboods or land uses from each other. Impacts would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 59 June 2022 b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? Same Impact as Approved Project. The Modified Project site has a land use designation of Mixed Use which allows development of 20 to 25 dwelling units per acre. The Modifed Project is pursing a 20 percent density bonus over the maximum allowable gross redisential density pursuant to Government Code section 65915(f)(3)(a). With the 20 percent desnsity bonus, the Modified Project site would allow development of up to 30 dewelling units per acre. The Modified Project would develop 57 senior housing units on 1.88 acres of land, resulting in approximately 28 dwelling units per acre (within the 30 dwelling units per acre development density). The Modified Project would be developed consistent with the land use density requirements of the State’s density bonus incentive. The Modified Project is located in the P- 1 Planned Unit District which permits any land uses with an approved final development plan that is consistent with the Town’s 2030 General Plan. All applications are subject to approval by the Planning Commission and Town Council. With the required approvals, the Modified Project would comply with the land use and zoning requirements. Impacts would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.11.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to land use and planning in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 60 June 2022 6.12 Mineral Resources Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? Yes b) Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan, or other land use plan? Yes 6.12.1 Summary of Impacts Identified in the 2018 EIR: Impacts to mineral resources were discussed on Section XI of Appendix A-Initial Study of the 2018 EIR (pp. 30). Appendix A-Initial Study of the 2018 EIR determined that no impact related to mineral resources would occur because there are no known or State-designated minerals of regional or statewide importance within or near the Town of Danville (Impact a and b, pp. 30). 6.12.2 Environmental Setting There are no significant mineral deposits or surface mining operations that have been identified in the Town of Danville.30 6.12.3 Discussion of Impacts a) and b) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan, or other land use plan? Same Impact as Approved Project. As stated in the Appendix A-Initial Study, the Town of Danville does not contain a known mineral deposit and the Modified Project site does not currently support mineral extraction operations. The Modified Project site is not designated as an area of significant mineral deposits. The Modified Project would not result in the loss of known mineral resources or deposit sites. No impacts to mineral resources would occur with implementation of the Modified Project and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. 30 Town of Danville, The 2030 General Plan, Chapter 6 Resources and Hazards. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 61 June 2022 6.12.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to mineral resources in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 62 June 2022 6.13 Noise Would the project result in: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Yes b) Generation of excessive groundborne vibration or groundborne noise levels? Yes c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? Yes 6.13.1 Summary of Impacts Identified in the 2018 EIR Impacts to noise were discussed on Section 4.7 of the 2018 EIR (pp. 141 to pp. 162) and on Section XII of Appendix A-Initial Study of the 2018 EIR (pp. 30 to pp. 32). The 2018 EIR determined that the Approved Project would expose future residents to traffic noise within the Town’s “conditionally acceptable” range of exterior noise between 55 and 70 dBA Ldn for low-density residential uses. With implementation of Mitigation Measure N-1, the traffic noise impact was determined to be less than significant (Impact N-1, pp. 154). The 2018 EIR also determined that the Approved Project would not generate groundborne vibration or increase permanent ambient noise levels that would exceed the Federal Transit Administration’s thresholds (Impact N-2, pp. 155). Therefore, impacts were found to be less than significant. The 2018 EIR concluded that with implementation of Mitigation Measures N-2, construction of the Approved Project would have a less-than-significant impact associated with creating a substantial temporary or periodic increase in ambient noise levels in the vicinity (Impact N-4, pp.159 to pp. 161). Appendix A-Initial Study of the 2018 EIR determined that no impact related to airport-related noise Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 63 June 2022 exposure would occur because the Approved Project is not located within the vicinity of a private airstrip or an airport land use plan (Impact f, pp. 32). 6.13.2 Environmental Setting The main noise source on the Modified Project site is traffic noise from adjacent and nearby roadways, including I-680 and West El Pintado Road. The Modified Project is not located within an airport land use plan, nor is it located within two (2) miles of a public airport or public use airport. The nearest private airstrip is the Little Hands Stolport, located approximately 2.25 miles to the west-southwest. 6.13.3 Discussion of Impacts a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Same Impact as Approved Project. Development of the site was included in the 2018 EIR noise analysis and the Modified Project represents a minor increase of 16 dwelling units compared to the Approved Project analyzed in the 2018 EIR. The minor increase in the number of units would not change the noise analysis conducted in the 2018 EIR. Constuction of the Modified Project, including demolition, grading, and paving activities, would create temporary or periodic increase in ambient noise. The Modified Proejct would involve similar construciton method (e.g., activities, equipment, and phasing) as the Approved Project. Therefore, the Modified Project would result in similar construction noise impacts as the Approved Project, which was discussed in Impact N-4 of the 2018 EIR (pp. 159 to 161). The Modified Project would be required to comply with Subsection 4-2.4(d) of the Town’s Noise Ordinance, which limits construction daytime hours (7:30 A.M. to 7:00 P.M.) to ensure construction noise would not occur during recognized sleep hours for nearby residences. In addition, the Modified Project would be required to implement the 2018 EIR Mitigation Measure N-2 to reduce construction-related noise impacts to nearby sensitive receptors. As with the Approved Project, the Modified Project would have a less-than-significant construction-related noise impact with implementation of the mitigation measure. During operation, the Modified Project would increase the number of vehicle trips to and from the site, which would incrementally increase traffic noise to nearby sensitive receptors. As discussed in Section 6.17, Transportation, the Modified Preoject would result in 75 fewer daily traffic trips than the Approved Project. Therefore, the Modified Project would result in lesser impacts than the Approved Project. b) Generation of excessive groundborne vibration or groundborne noise levels? Same Impact as Approved Project. The nearest sensitive receptors to the Modified Project site are the single-family residences approximately 40 to 100 feet to the west and south and a senior assisted living facility approximately 60 feet to the east. As indicated in Table 27 of the 2018 EIR, vibration levels could reach up to 81 vibration decibles (VdB) at 40 feet at the nearest sensitive receptors (pp. 155). However, the vibration levels would not exceed 100 VdB, which is the general threshold where minor damage can occur to fragile buildings (Table 27 of the 2018 EIR, pp. 155). In addition, the Modified Project would comply with the Town’s Noise Ordinance limiting construction between the hours of 7:30 A.M. to 7:00 P.M., Monday through Friday, and 9:00 A.M. to 7:00 P.M. Saturday, Sunday, and holidays to ensure sensitive receptors would not be exposed to project-related groundborne vibration during normal sleep hours. Vibration impacts would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 64 June 2022 c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? Same Impact as Approved Project. The Modified Project would not be located within two (2) miles of a private airstrip or an airport land use plan. Impacts related to exposing people residing or working in the area to excessive airport-related noise would not occur and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.13.4 2018 EIR Mitigation Measures Applicable to the Modified Project N-2 Construction-Related Noise Reduction Measures. The applicant shall apply the following measures during construction of the project: • Construction Staging. The contractor shall provide staging areas on-site to minimize off-site transportation of heavy construction equipment. These areas shall be located to maximize the distance between activity and sensitive receptors. This would reduce noise levels associated with most types of idling construction equipment. • Mufflers. Construction equipment shall be properly maintained and all internal combustion engine driven machinery with intake and exhaust mufflers and engine shrouds, as applicable, shall be in good condition and appropriate for the equipment. During construction, all equipment, fixed or mobile, shall be operated with closed engine doors and shall be equipped with properly operating and maintained mufflers, consistent with manufacturers’ standards. • Electrical Power. Electrical power, rather than diesel equipment, shall be used to run compressors and similar power tools and to power any temporary structures, such as construction trailers or caretaker facilities. • Equipment Staging. All stationary equipment shall be staged as far away from the adjacent multifamily residential development as feasible. • Equipment Idling. Construction vehicles and equipment shall not be left idling for longer than five minutes when not in use. • Workers’ Radios. All noise from workers’ radios shall be controlled to a point that they are not audible at sensitive receptors near construction activity. • Smart Back-up Alarms. Mobile construction equipment shall have smart back-up alarms that automatically adjust the sound level of the alarm in response to ambient noise levels. Alternatively, back-up alarms shall be disabled and replaced with human spotters to ensure safety when mobile construction equipment is moving in the reverse direction. • Disturbance Coordinator. The applicant shall designate a disturbance coordinator who shall be responsible for responding to any local complaints about construction noise. The noise disturbance coordinator shall determine the cause of the noise complaint (e.g., starting too early, bad muffler, etc.) and shall require that reasonable measures warranted to correct the problem be implemented. A telephone number for the disturbance coordinator shall be conspicuously posted at the construction site. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 65 June 2022 • Construction Notice. Two weeks prior to the commencement of construction and grading at the project site, the applicant shall install a 3-foot by 3-foot sign at the project entry that discloses the allowable construction work days and hours, the planned construction schedule, and the contact name and phone number for residents to call for construction noise related complaints. All reasonable concerns shall be rectified within 24 hours of receipt. 6.13.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to noise in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 66 June 2022 6.14 Population and Housing Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? Yes b) Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? Yes 6.14.1 Summary of Impacts Identified in the 2018 EIR Impacts to population and housing were discussed on Section XIII of Appendix A-Initial Study of the 2018 EIR (pp. 32 and pp. 33). Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would induce population and housing growth in the Town of Danville. The population and housing growth would be within the projection accounted for in the Town’s 2030 General Plan EIR and Plan Bay Area 2040 (Impact a, pp. 32). Therefore, the Approved Project would not induce population growth beyond the current forecast. The Approved Project would include demolition of one existing single-family residence and construction of new housing units; therefore, a substantial number of existing people or housing would not be displaced. 6.14.2 Environmental Setting The Town of Danville is preparing an update to its Housing Element for the 2023-2031 planning period. The Housing Element is a State-mandated policy document included in the Town’s 2030 General Plan. The foundation for the Housing Element is the Regional Housing Needs Assessment (RHNA), in which the State projects each region’s housing needs for all income groups for the upcoming eight (8) years. The Town of Danville is located within the Association of Bay Area Governments (ABAG) region. The RHNA has determined that the Bay Area must plan for an additional 441,176 new units, of which the Town of Danville is currently expected to provide approximately 2,241 new homes.31 31 Town of Danville. 2023-2031 Housing Element. Website: https://www.danville.ca.gov/886/2023--2031-Housing-Element. Accessed September 27, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 67 June 2022 6.14.3 Discussion of Impacts a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? Same Impact as Approved Project. The Modified Project would develop 57 senior housing units. This amount of new senior housing units represents approximately 0.023 percent of the RHNA for housing unit for the 2023-2031 planning period in the Town of Danville. Therefore, the Modified Project would not induce population growth beyond the projected forecast. Impacts would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. b) Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? Same Impact as Approved Project. The Modified Project would include demolition of an existing single- family residence. Demolition of one single-family residence would not result in the displacement of a substantial number of housing or people necessitating the construction of replacement housing elsewhere. In addition, the Modified Project would result in 16 new senior housing units, which would increase the overall availability of housing in the area. No impact would occur. Preparation of a subsequent EIR is not required. 6.14.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to population and housing in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 68 June 2022 6.15 Public Services Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services: Fire protection? Yes Police protection? Yes Schools? Yes Parks? Yes Other public facilities? Yes 6.15.1 Summary of Impacts Identified in the 2018 EIR Impacts to public services were discussed on Section XIV of Appendix A-Initial Study of the 2018 EIR (pp. 33 and pp. 34). Appendix A-Initial Study of the 2018 EIR determined that the Approved Project would have less than significant impacts to fire protection, police protection, schools, and other public facilities; and would have no impacts to parks (Impacts a(i) to a(v), pp. 33 and pp. 34). 6.15.2 Environmental Setting Fire protection for the Modified Project would be provided by the San Ramon Valley Fire Protection District (SRVFPD). Fire Stations 31 and 33 of the SRVFPD are located approximately one (1) mile south and east of the site, respectively. Police Protection for the Modified Project would be provided by the Danville Police Department (DPD) through contract services with the Contra Costa County Sheriff’s Department. The closest police station is approximately 0.1-mile to the north-northwest. The Modified Project would be located within the San Ramon Valley Unified School District which serves more than 30,000 elementary and high school students. All residential development projects in the Town of Danville are required to pay park land dedication impact fees for purchases or development of parks. The closest library branch is Danville Library located less than one (1) mile south of the Modified Project site. 6.15.3 Discussion of Impacts a) Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services: i) Fire Protection? Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 69 June 2022 Same Impact as Approved Project. As with the Approved Proejct, the Modified Project would be served by the SRVFPD Fire Stations 31 and 33.32 Implementation of the Modified Project would result in an additional 16 units compared to the Approved Project. The additional 16 units would increase the demand for fire protection service as analyzed in the Appendix A-Initial Study, but the increase would be negligible. As with the Approved Project, no new fire protection facilities or addtional staffing would be required to serve the Modified Project. The Modified Project would comply with the California Fire Code requirements for emergency access, fire detection, and suppression systems. Impacts would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. ii) Police Protection? Same Impact as Approved Project. The Modified Project would be served by the DPD through contract services with the Contra Costa County Sheriff’s Department.33 Implementation of the Modified Project would result in additional 16 units compared to the Approved Project. The addtional 16 units would increase the demand for police protection service as analyzed in the Appendix A-Initial Study, but the increase would be negligible. As with the Approved Project, the Modified Project would not create the need for new or expanded police protection facilites. Impacts would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. iii) Schools? Less Impact than the Approved Project. The Modified Project would construct age-restricted senior housing units and would not be expected to increase the number of school-aged children in the area. The Modified Project would result in lesser impacts to schools than the Approved Project. Preparation of a subsequent EIR is not required. iv) Parks? New Less than Significant Impact. As discussed in Section 6.14 of Appendix A-Initial Study, Population and Housing, the Modified Project would not induce population growth in the Town of Danville beyond forecasts in the Danville 2023-2031 Housing Element. The Modified Project, with the additional 16 units, would be expected to marginally increase the use of public parks in the area, but the increase would be within growth forecasts and is not anticipated to required new or physically altered park facilities. The Modified Project would be subject to any applicable development fees to the Town of Danville for purchases or development of parks. With payments of the required impact fees, impacts to parks would be less than significant. Preparation of a subsequent EIR is not required. v) Other Public Facilities? Same Impact as Approved Project. The closest library branch to the Modified Project site is the Danville Library located at 400 Front Street, which is less than one (1) mile to the south. As discussed in Section 6.14 of Appendix A-Initial Study, Population and Housing, the Modified Project would not induce population growth in the Town of Danville beyond forecasts in the Danville 2023-2031 Housing Element. The Modified Project would be expected to increase the use of public facilities (such as libraries) in the area, but the increase would be within growth forecasts and is not anticipated to require new or physically altered public facilities. Impacts to other public facilities would be less than significant and would be 32 Town of Danville. 375 West El Pintado Road Residential Project Initial Study. January 2016. 33 Contra Costa County Sheriff’s Department. Special Operations Division – Danville. Website: https://www.cocosheriff.org/bureaus/field-operations/special-operations-division/danville. Accessed October 12, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 70 June 2022 consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.15.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to public services in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 71 June 2022 6.16 Recreation Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? Yes b) Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? Yes 6.16.1 Summary of Impacts Identified in the 2018 EIR Impacts to recreation were discussed in Section XV of Appendix A-Initial Study of the 2018 EIR (pp. 35). Appendix A-Initial Study of the 2018 EIR determined that with the payments to required impacts fees, the Approved Project would have no impacts to parks or recreational facilities. 6.16.2 Environmental Setting There are numerous recreational areas in the vicinity of the site, including the East Bay Regional Park’s Las Trampas Regional Wilderness area and La Vista Park 1.15miles and 0.2 mile to the west, respectively; Hap Magee Ranch Dog Park 1.1 miles to the northwest, All Wars Memorial and Mt. Diablo 1 mile and 3 miles to the northeast, respectively; and Osage Station Park and Sycamore Valley Regional Open Space Preserve 2 miles and 3.25 miles to the southeast, respectively. The nearest community park to the site is La Vista Park, located 0.2 mile away. 6.16.3 Discussion of Impacts a) and b) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? New Less than Significant Impact. Construction and operation of the Modified Project would result in 16 new multi-family housing units in the Town of Danville. This increase in housing units would not induce population growth beyond forecasts in the Danville 2023-2031 Housing Element (refer to Section 6.14, Population and Housing). The increase in housing would potentially increase the use of existing neighborhood and regional parks, but the magnitude of this increase is not large enough to result in Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 72 June 2022 substantial physical deterioration of recreational facilities. The Danville 2030 General Plan indicated that there are about 6.6 acres of parkland per 1,000 residents in the Town of Danville.34 The Town would maintain this standard in the future as population is added and needs increasing through a combination of impact fees, land dedication within new development, joint use agreements, public-private partnerships, and similar strategies for expanding the Town’s park inventory. The Modified Project would be subject to any applicable development fees to the Town of Danville for purchases or development of parks. With payments of the required impact fees, impacts to recreational facilities would be less than significant. Preparation of a subsequent EIR is not required. 6.16.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to recreation in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. 34 Town of Danville. The 2030 General Plan, Chapter 5 Public Facilities. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 73 June 2022 6.17 Transportation Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? Yes b) Conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)? No c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? Yes d) Result in inadequate emergency access? Yes 6.17.1 Summary of Impacts Identified in the 2018 EIR Impacts to transportation were discussed in Section 4.8 of the 2018 EIR (pp. 163 to pp. 188). The 2018 EIR determined that with implementation of Mitigation Measures T-1 (preparation and implementation of a Construction Management and Mitigation Plan) and adherence to the Town’s development permit conditions, the Approved Project’s construction impact to traffic and circulation would be reduced to a less-than-significant level and would have a less-than-significant impact related to conflict with a program, plan, ordinance or policy addressing the circulation system (Impact T-1, pp. 179 to pp. 181). The 2018 EIR also determined that the Approved Project would have less-than-significant impacts related to increased hazards due to a design feature or incompatible use or inadequate emergency access because the Approved Project would be designed to provide a clear line-of-sight to and from the site and would prohibit on-street parking on the west side of West El Pintado Road (Impact T-5, pp. 187). 6.17.2 Environmental Setting The environmental setting for transportation is the same as described for the Approved Project in the 2018 EIR. Regional access to the site and vicinity is provided by I-680, Diablo Road, Danville Boulevards, El Cerro Boulevard, and West El Pintado Road. Public transportation within Contra Costa County, including Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 74 June 2022 the Danville area, is proved by the County Connection transit agency. Regularly scheduled bus service in Danville is provided by County Connection bus routes 21/321 along the Danville Boulevard and Railroad Avenue corridors (Figure 18 of the 2018 EIR, pp. 165). County Connection also provides service to the Amtrak stations in Martinez, all Bay Area Rapid Transit stations in Contra Costa County, major employment areas, city centers, and schools; and provides LINK (para-transit) service, an on-demand reservation based ride service for persons with disabilities unable to use fixed route transit. No bicycle facilities are located in the vicinity of the Modified Project. However, bicycle lanes are provided near the site on El Cerro Boulevard, Danville Boulevard (south of El Cerro Boulevard), Railroad Avenue, and La Gonda Way (Figure 19 of the 2018 EIR, pp. 166). New CEQA Guidelines for analyzing transportation impacts were issued by the Office of Planning and Research in 2018. Effective July 1, 2020, all CEQA lead agencies were required to analyze a project’s transportation impacts using vehicle miles traveled (VMT) rather than congestion levels at intersections (level of service or “LOS,” graded on a scale of A-F). The Town of Danville conducted both VMT and LOS analyses for the Modified Project (Appendix B). The analysis in this section will focus on VMT. The LOS analysis was conducted to access congestion for non-CEQA planning purposes. 6.17.3 Discussion of Impacts a) Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? Construction Same Impact as Approved Project. The Modified Project would involve construction activities similar to those described in the 2018 EIR for the Approved Project. The delivery and export haul routes for the Modified Project would be the similar to the Approved Project. The Modified Project would require approximately 405 to 650 round-trip haul trips over the construction period (three to five months) to export an estimated 5,670 cubic yards of earth material (assuming 9 to 14 cubic yards per truck load). The haul trips anticipated for the Modified Project would be 14 to 20 fewer trips than what was analyzed in 2018 EIR because the additional 200 cubic yards of earth material would be balanced on-site compared to the Approved Project as shown in Table 3 in Section 3.3.2 of the Project Description. The reduction of 14 to 20 trips would not substantially reduce traffic impacts as discussed in the 2018 EIR during construction. The Modified Project would result in similar impacts to the existing circulation system, including transit, roadway, bicycle and pedestrian facilities as the Approved Project. Construction of the Modified Project would be required to comply with the Town of Danville’s development permit conditions, which restrict grading and other construction activities to the hours of 7:30 A.M. to 7:00 P.M. Monday through Friday and 9:00 A.M. to 7:00 P.M. on weekends and holidays. The Modified Project would be required to implement 2018 EIR Mitigation Measure T-1 to reduce transportation impacts during peak traffic hours. With implementation of 2018 EIR Mitigation Measure T-1 and adherence to the Town’s development permit conditions, impacts would be less than significant and consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. Operation A Traffic Impact Analysis (TIA) for the Modified Project has been prepared by W-Trans in June 2022 (Appendix B). The TIA estimated trip generation resulting from the Modified Project as indicated in Table 4. Compared to the 2018 EIR, the Modified Project would be expected to generate 60 fewer daily trips. During operation, the Modified Project would be expected to generate fewer peak hour vehicle trips than what was anticipated in the 2018 EIR, which would result in a similar or slightly improved intersection Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 75 June 2022 Level of Service (LOS). Therefore, the Modified Project would be expected to result in similar LOS impacts as the Approved Project. Preparation of a subsequent EIR is not required. Table 4. Trip Generation Summary35 PROJECT AM PEAK HOUR TRIP PM PEAK HOUR TRIP DAILY TRIP Approved Project 17 21 271 Modified Project 11 15 211 Net Change -6 -6 -60 b) Conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)? New Less than Significant Impact. The 2018 EIR was completed prior to the July 2020 requirements for lead agencies to use VMT as the primary CEQA metric for evaluating transportation impacts (CEQA Guidelines Section 15064.3, subdivision(b)). Therefore, a VMT analysis for the Approved Project was not conducted. Senate Bill (SB) 743 established a change in the metric to be applied for determining traffic impacts associated with development projects. Rather than the delay-based criteria associated with a LOS analysis, the increase in VMT as a result of a project is now the basis for determining potential environmental impacts. As of the date of this analysis, the Town of Danville has not yet established thresholds of significance related to VMT. Therefore, a VMT analysis for the Modified Project (Appendix B) has been conducted based on guidance provided by the California Governor’s Office of Planning and Research (OPR) in the publication Transportation Impacts (SB 743) CEQA Guidelines Update and Technical Advisory, 2018. The document indicates that a residential project generating vehicle travel that is 15 or more percent below the existing countywide residential VMT per capita may indicate a less than significant VMT impact. To provide a thorough evaluation, the VMT for both the Townwide and Countywide averages were reviewed. According to Town Staff, the townwide Home-based VMT average per capital is 22.3 miles.36 Apply OPR’s guidance, a residential project generating a VMT that is 15 percent or more below this value, or 19.0 miles per capita or less, would have a less-than-significant VMT impact. Additionally, based on data form the Contra Costa Transportation Authority (CCTA) 2020 travel demand model, the County of Contra Costa has a baseline average residential VMT of 17.3 miles per capita which, per OPR’s guidance, corresponds to a significance threshold of 14.7 miles. As indicated in the TIA (Appendix B), the average residential trip length within the Modified Project area would be 6.22 miles. The Modified Project would be expected to generate 211 daily trips at an average trip length of 6.22 miles for a total estimated VMT of 1,312. According to the US Census Bureau, households consisting of residents who are age 55 and older have an average of 1.75 persons per unit. Multiplying this occupancy rate (1.75 persons per unit) by the number of units (57 units) and dividing by the total estimated VMT (1,312) results in an estimated project VMT per capita of approximately 13.2. VMT per capita of 13.2 is lower than either the Townwide or Countywide VMT screening thresholds of 19.0 and 14.7, respectively. Therefore, the Modified Project would result in a less-than-significant VMT impact. Preparation of a subsequent EIR is not required. 35 W-Trans. June 22, 2022. CEQA Analysis for the 375 EL Pintado Road Project. 36 Andrew Dillard (Town of Danville, Transportation Manager). May 26, 2022. 375 West El Pintado – Transportation Impact Analysis Comments Memorandum. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 76 June 2022 c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? Same Impact as Approved Project. Access to the Modified Project site would be provided by a single internal road on West El Pintado Road. Residents would enter the internal road at roughly the midpoint of the Modified Project site’s eastern boundary. The internal road would serve both inbound and outbound traffic. The inbound and outbound traffic lanes would be at least 12-feet-wide which complies with Town’s requriements. Outbound movements would be controlled by a stop sign and would allow both right and left turns. . The internal road design would be similar to what was described in the 2018 EIR for the Approved Project. As with the Approved Project, the Modified Project would also include grading to lower the existing on-site berm in order to provide a clear line-of-sight to/from the north to ensure an adequate stopping sight distance within 200 feet of vehicles exiting the internal road onto West El Pintado Road. In addition, on-street parking would be prohibited on the west side of West El Pintado Road, within the public right-or-way, where West El Pintado Road immediately borders the site. This would avoid the potential for cars to interfere with motorist’s visibility entering and exiting the site. Therefore, the proposed site access and sight distance provisions would be adequate. The Modified Project would result in less-than-significant impacts to safety, consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. d) Result in inadequate emergency access? Same Impact as Approved Project. Emergency vehicle access to the Modified Project would be provided from I-680, El Cerro Boulevard, and La Gonda Way into the project’s internal road on West El Pintado Road. The Modified Project would not include major modifications to the roadway network, circulation patterns, or design features that would alter emergency vehicle access. The Modified Project would be required to comply with all Town access standards as well as requirements in the California California Fire Code regarding access for emergency response vehicles. In compliance with these requirements, the driveway and internal vehicle access lanes would be adequate for emergency response. Adherence to existing local and State regulations would reduce potential impacts. Impacts would be less than significant and would be consistent with the findings of the 2018 EIR. Preparation of a subsequent EIR is not required. 6.17.4 2018 EIR Mitigation Measure Applicable to the Modified Project T-1 Construction Mitigation Plan. The project applicant shall develop and submit for approval to the Town of Danville a Construction Management and Mitigation Plan that includes designated haul routes and staging areas, traffic control procedures, emergency access provisions and construction crew parking, to minimize traffic impacts during construction. The plan shall ensure that haul routes and construction activity timing shall comply with the Town of Danville’s requirements. The plan shall also ensure that construction period employees can either park on-site or at an off-site location. In addition, the plan shall require that temporary signage, alternative pedestrian passage, and/or protected walkways be provided should sidewalks be closed during construction. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 77 June 2022 6.17.5 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to transportation in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 78 June 2022 6.18 Tribal Cultural Resources Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated?* New Potentially Significant Impact? Same Impact as Approved Project? a) Cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is: i) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section 5020.1(k)? No ii) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code section 5024.1? In applying the criteria set forth in subdivision (c) of Public Resources Code section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe. No * The potentially significant impacts would be reduced to less than significant with implementation of 2018 EIR mitigation measures. 6.18.1 Summary of Impacts Identified in the 2018 EIR The questions included in this Tribal Cultural Resources Section were not discussed in the 2018 EIR, as this section was added to the CEQA Guidelines Appendix G Checklist in December 2018. No conclusions were made regarding the significance level of impacts related to tribal cultural resources. 6.18.2 Environmental Setting On October 14, 2014, Tom Origer & Associates sent letters to the State of California’s Native American Heritage Commission (NAHC), the Amah Mutsun Tribal Bank of Mission San Juan Bautista, Indian Canyon Mutsun Band of Costanoan, Muwekma Ohlone Tribe of the San Francisco Bay Area, the Ohlone Indian Tribe, Trina Marine Ruano Family, Katherine Erolinda Perez, Jakki Kehl, and Linda Yamane seeking information Native America cultural resources (Appendix A of the Initial Study). On October 17, 2014, Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 79 June 2022 Eileen Barrow from the NAHC responded to the letter and indicated that no record of Native American cultural resources was found in the immediate area. No tribal responses were received. 6.18.3 Discussion of Impacts a) Cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is: i) and ii) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section 5020.1(k)? A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code section 5024.1? In applying the criteria set forth in subdivision (c) of Public Resources Code section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe. New Less than Significant Impact with 2018 EIR Mitigation Measures. Tribal consultation letters were sent out to NAHC and Native American tribes during the preparation of the 2018 EIR as discussed in Section 6.18.2 above. No Native American cultural resources were identified within the immediate Project Area and no tribal contacts have provided comments regarding development on the Modified Project Site. However, there is the possibility that buried Native American cultural resources could be present and accidental discovery could occur. The Modified Project would be required to implement Mitigation Measures CR-1 to CR-3 to provide cultural resources awareness training to all construction workers to recognize cultural resources and provide procedure to handle unanticipated discovery of cultural remains and human remains. With implementation of Mitigation Measures CR-1 to CR-3, impacts to tribal cultural resources would be less than significant. Preparation of a subsequent EIR is not required. 6.18.4 2018 EIR Mitigation Measures Applicable to the Modified Project CR-1 Cultural Resources Awareness Training (refer to Section 6.5.4 above) CR-2 Unanticipated Discovery of Cultural Remains (refer to Section 6.5.4 above) CR-3 Unanticipated Discovery of Human Remains (refer to Section 6.5.4 above) 6.18.4 Conclusion The Modified Project would not create a new significant tribal cultural resources impact that was not previously identified in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 80 June 2022 6.19 Utilities and Service Systems Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects? Yes* b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? Yes c) Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? Yes d) Generate solid waste in excess of state or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 81 June 2022 Would the project: Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? e) Comply with federal, state, and local management and reduction statutes and regulations related to solid waste? Yes * This CEQA question was partially covered in the prior 2018 EIR, with the exception of the electric power, natural gas, and telecommunications component of the question. 6.19.1 Summary of Impacts Identified in the 2018 EIR Impacts to utilities and service systems were discussed on Section XVII of Appendix A-Initial Study of the 2018 EIR (pp. 37 to pp. 40). Appendix A-Initial Study of the 2018 EIR determined that the Central Contra Costa Sanitary District (CCCSD) has sufficient wastewater capacity to serve the Approved Project. No new water or wastewater treatment facilities or expansion of existing facilities would be needed, resulting in less than significant impacts (Impacts a, b, and e, pp. 37 and pp. 38). The Approved Project would involve placing two on-site swales in underground pipe culverts. However, the construction of the culverts would not represent a significant environmental effect and would have a less-than-significant impact to the stormwater drainage system (Impact c, pp. 38). Appendix A-Initial Study also determined that EBMUD and the Central Contra Costa Solid Waste Authority (CCCSWA) would have capacity to provide water and solid waste services to the Approved Project, respectively. Therefore, impacts were identified as less than significant (Impacts d and f, pp. 38 to pp. 40). The Approved Project was determined to be in compliance with all applicable regulations related to solid waste, resulting in no impacts (Impact g, pp. 40). 6.19.2 Environmental Setting The utilities and service system provides for the Modified Project would include the following: • Wastewater collection and treatment: CCCSD • Water: EBMUD • Electricity: Pacific Gas & Electric Company (PG&E) and Marin Clean Energy (MCE) • Natural gas: PG&E • Telecommunications: American Telephone and Telegraph Company (AT&T) and Comcast • Solid Waste and Recycling: RecyleSmart (CCCSWA) 6.19.3 Discussion of Impacts a) and c) Require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects? Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? Same Impact as Approved Project. Implementation of the Modified Project would result in additional 16 housing units compared to the Approved Project. The additional 16 housing units would not result in a Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 82 June 2022 new substantial increase of wastewater generation (compared to the Approved Project) that would result in an increase in the severity of previously identified impacts in the 2018 EIR. Impacts would be the same as Approved Project. Preparation of a subsequent EIR is not required. New Less than Significant Impact. The Modified Project would connect to existing electricity, natural gas, and telecommunication facilities. No relocation or construction of new or expanded electricity, natural gas, or telecommunication facilities is anticipated as a result of the Modified Project. Impacts would be less than significant. Preparation of a subsequent EIR is not required. b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? Same Impact as Approved Project. Implementation of the Modified Project would result in additional 16 housing units compared to the Approved Project. The additional 16 housing units would not result in a new substantial increase of water demand. As stated in Section 16.9, Utilities and Service Systems, EBMUD’s available supply exceeds the planning level of demand during normal year conditions through the year 2040 (Appendix A-Initial Study, pp. 38). The available supply is normally equal to or greater than the planning level of demand. The average household in EBMUD’s service area uses approximately 246 gallons per day. The additional 16 units would result in an additional approximately 3,936 gallons of water per day compared to the analysis included in the Initial Study. The additional 3,936 gallons of water usage per day would not result in a new significant impact on water demand compared to the analysis in the Initial Study. Therefore, impacts on water demand would be less than significant and would be consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. d) Generate solid waste in excess of state or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? Same Impact as Approved Project. As with the Approved Project, the Modified Project would receive solid waste and recycling services form the CCCSWA through RecycleSmart. Solid waste collected from the Modified Project site would be deposited in the Keller Canyon Landfill. The Keller Canyon Landfill currently has a remaining capacity of 63,408,410 cubic yards (approximately 17 million tons) and accepts 3,500 tons per day of solid waste.37 The Modified Project would consist of 57 housing units and would be expected to generate up to 83.2 tons of solid waste per year (0.23 ton/day) with a waste disposal rate of 3.6 to 8.6 pounds/unit/day for multi-family housing, which is marginally greater than the Approved Project with the additional 16 units.38 This amount of solid waste disposal represents 0.000007 percent of the current throughput at the Keller Canyon Landfill. Therefore, the Modified Project would be served by a landfill with sufficient permitted capacity to accommodate the solid waste disposal needs. Impacts would be less than significant and consistent with the findings of Appendix A-Initial Study of the 2018 EIR. Preparation of a subsequent EIR is not required. e) Comply with federal, state, and local management and reduction statutes and regulations related to solid waste? 37 CalRecycle. Keller Canyon Landfill (07-AA-0032). Website: https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/4407?siteID=228. Accessed September 27,2021. 38 CalRecycle. Estimated Solid Waste Generation Rates. Website: https://www2.calrecycle.ca.gov/wastecharacterization/general/rates. Accessed September 27, 2021. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 83 June 2022 Same Impact as Approved Project. The Town of Danville Municipal Code regulates the disposal of solid waste and hazardous waste. The Modified Project would result in development of additional 16 units. Based on the unit count, the Modified Project could generate more solid waste than the Approved Project. However, the increase in solid waste generation would be negligible and would not create a new significant impact. The Modified Project would be required to comply with all applicable regulations related to solid waste. No impact would occur. Preparation of a subsequent EIR is not required. 6.19.4 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts related to utilities and service systems in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 84 June 2022 6.20 Wildfire Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project: a) Substantially impair an adopted emergency response plan or emergency evacuation plan? No b) Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire? No c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? No d) Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? No Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 85 June 2022 6.20.1 Summary of Impacts Identified in the 2018 EIR: The questions included in this Wildfire Section were not included in the CEQA Guidelines Appendix G when the EIR was prepared in 2018, as these questions were added to the CEQA Guidelines Appendix G in December 2018. Impacts related to wildland fires were discussed in Section VIII, Hazards and Hazardous Materials of Appendix A-Initial Study of the 2018 EIR (pp. 26). Appendix A-Initial Study determined that the Approved Project would have a less-than-significant impact related to exposing people or structures to a significant risk of loss, injury, or death involving wildland fire because the site is located within an urban area and is surrounded by existing development (Impact h, pp.26). 6.20.2 Environmental Setting As discussed in Section 6.9.2, the Modified Project is located within a Wildfire Threat area designated as Very High Threat to Development as identified in the Danville 2030 General Plan but not within a State Responsibility Area in a High Fire Hazards Severity Zone or a Very High Fire Hazard Severity Zone as shown on CAL FIRE’s Fire Hazard Severity Zones Maps. 39,40 6.20.3 Discussion of Impacts a-d) Substantially impair an adopted emergency response plan or emergency evacuation plan? Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire? Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? New Less than Significant Impact. The Modified Project is not located within a State Responsibility Area or land classified as Very High Fire Hazard Severity Zone. The nearest Very High Fire Hazard Severity Zone is located approximately 1.5 miles southwest of the Modified Project site.41 The Modified Project would comply with the California Fire Code requirements for emergency access and would not include changes that could potentially interfere with an emergency plan or an emergency evacuation plan. The Modified Project site is located within an urban area and is surrounded by existing development. I-680 is east of the site, and would serve as a fire break in the event of a wildfire. The Modified Projectwould not require the installation or maintenance of associated infrastructure that may exacerbate fire risk. The Modified Project site is located onrelatively flat land. No slopes on or adjacent to the site are high or steep enough to constitute signficant landslide hazards. Wildfire impacts would be less than significant. Preparation of a subsequent EIR is not required. 39 Town of Danville, The 2030 General Plan, Chapter 6 Resources and Hazards – Figure 22. 40 CAL FIRE. FHSZ Viewer. Website: https://egis.fire.ca.gov/FHSZ/. Accessed September 23, 2021. 41 Ibid. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 86 June 2022 6.20.4 Conclusion The Modified Project would not create a new significant wildfire impact that was not previously identified in the 2018 EIR. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 87 June 2022 6.21 Mandatory Findings of Significance Discussed in the 2018 EIR? (Yes/No) Less Impact than Approved Project? New Less than Significant Impact? New Less than Significant Impact with Mitigation Incorporated? New Potentially Significant Impact? Same Impact as Approved Project? a) Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? Yes b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)? Yes c) Does the project have environmental effects that will cause substantial adverse effects on human beings, either directly or indirectly? Yes Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 88 June 2022 6.21.1 Summary of Impacts Identified in the 2018 EIR: The 2018 EIR and Appendix A-Initial Study of the EIR determined that the Approved Project would have significant impacts to biological resources and cultural resources. However, the impacts would be mitigated to a less-than-significant level with implementation of Mitigation Measures BIO-1 BIO-6 and CR- 1 to CR-3. The 2018 EIR also determined that the Approved Project would not result in a significant cumulative considerable environmental impact. The Approved Project would have less than significant air quality and noise impacts to human beings with implementation of Mitigation Measures AQ-1, N-1 and N-2. 6.21.2 Discussion of Impacts a) Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? Same Impact as Approved Project. As discussed in Section 6.4, Biological Resources, the Modified Project would not have significant impacts beyond what was analyzed in the 2018 EIR. The Modified Project would implementation Mitigation Measures BIO-1 to BIO-5 to mitigate impacts to special-status species, sensitive natural communities, aquatic resources, and riparian vegetation to a less-than-significant level. 2018 EIR Mitigation Measures BIO-5 to BIO-6 would be applicable to the Modified Project and would be implemented to mitigate impacts related to tree removal to a less-than-significant level. The Modified Project would have no significant impacts related to the potential for the degradation of the quality of the environment, a substantial reduction in the habitat of a fish or wildlife species, the drop of a fish or wildlife population below self-sustaining levels, a substantial reduction in the number or restriction on the range of a rare or endangered plant or animal. Furthermore, as discussed in Sections 6.5 and 6.18, Cultural Resources and Tribal Cultural Resources, the Modified Project would not have significant impacts with respect to major periods of California history or prehistory. Mitigation Measures CR-1 to CR-3 would be implemented prior to construction and in the event prehistoric or historic-period archaeological resources are encountered or in the event of discovery or recognition of any human remains during the Modified Project’s ground disturbing activities. The Modified Project would have no significant impacts related to the potential for elimination of important examples of major periods of California history or prehistory. b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)? Same Impact as Approved Project. The Modified Project’s impacts would be individually limited and not cumulatively considerable. Based on the analysis provided in Section 6.3, Air Quality and Section 6.13, Noise, the Modified Project would not substantially increase cumulative impacts related to these analysis areas. Additionally, as presented throughout this Addendum, the Modified Project’s impacts would be consistent with the 2018 EIR or related document. c) Does the project have environmental effects that will cause substantial adverse effects on human Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 89 June 2022 beings, either directly or indirectly? Same Impact as Approved Project. The Modified Project has not been found to generate new or substantially more severe environmental effects than those previously analyzed in the 2018 EIR or related document; therefore, there is no likelihood of the Modified Project causing substantial adverse effects on human beings, either directly and indirectly, beyond that which was previously analyzed in the 2018 EIR and related document. Impacts would be consistent with what was analyzed in the 2018 EIR and related document. 6.21.3 Conclusion The Modified Project would not substantially increase the severity of the previously identified impacts in the 2018 EIR or related document. Accordingly, the Town of Danville finds the following: • Substantial changes in the project and project circumstances resulting in new significant effects or a substantial increase in the severity of previously identified significant effects would not occur. • New information of substantial importance with respect to this environmental resource resulting in new significant effects or a substantial increase in the severity of previously identified effects has not been identified. • None of the proposed modifications would significantly affect this environmental resource. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 90 June 2022 7.0 REFERENCES CAL FIRE. FHSZ Viewer. Website: https://egis.fire.ca.gov/FHSZ/. Accessed September 23, 2021. California Air Resources Board. Carbon Monoxide & Health. Website: https://ww2.arb.ca.gov/resources/carbon-monoxide-and-health. Accessed October 6,2021. California Building Standards Commission. 2019 California Green Building Standards Code, CCR Title 24, Part 11. Website: https://calgreenenergyservices.com/wp/wp- content/uploads/2019_california_green_code.pdf. Accessed October 6, 2021. California Department of Conservation. California Important Farmland Finder. Available at https://maps.conservation.ca.gov/DLRP/CIFF/. Accessed on August 25, 2021. California Department of Conservation. Contra Costa County Tsunami Hazard Areas. Website: https://www.conservation.ca.gov/cgs/tsunami/maps/contra-costa. Accessed October 12, 2021. California Department of Transportation. Caltrans Water Quality Planning Tool. Website: http://svctenvims.dot.ca.gov/wqpt/wqpt.aspx. Accessed October 12, 2021. California Department of Water Resources. California’s Groundwater Bulletin 118 – San Ramon Valley Groundwater Basin. February 27, 2004. CalRecycle. Estimated Solid Waste Generation Rates. Website: https://www2.calrecycle.ca.gov/wastecharacterization/general/rates. Accessed September 27, 2021. CalRecycle. Keller Canyon Landfill (07-AA-0032). Website: https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/4407?siteID=228. Accessed September 27,2021. Contra Costa County Department of Conservation and Development. 2016 Agricultural Preserves Map. Map Created on February 1, 2017. Contra Costa County Sheriff’s Department. Special Operations Division – Danville. Website: https://www.cocosheriff.org/bureaus/field-operations/special-operations-division/danville. Accessed October 12, 2021. FEMA. FEMA Flood Maps Service Center. Website: https://msc.fema.gov/portal/search?AddressQuery=375%20west%20el%20pintado%2C%20dan ville#searchresultsanchor. Accessed September 23, 2021. San Francisco Bay RWQCB. Water Quality Plan for the San Francisco Bay Bain. July 14, 2010. Website: https://www.waterboards.ca.gov/sanfranciscobay/basin_planning.html. Accessed October 12, 2021. SGMA Basin Prioritization Dashboard. Website: https://gis.water.ca.gov/app/bp-dashboard/final/. Accessed October 12, 2021. State Water Resources Control Board. GeoTracker. Website: https://geotracker.waterboards.ca.gov/map/?CMD=runreport&myaddress=Sacramento. Accessed October 12, 2021. Tom Origer & Associates. November 5, 2014. A Cultural Resources Survey for the W. El Pintado Condominium Development Project. Addendum to the 375 West El Pintado Road Residential Project EIR Town of Danville 91 June 2022 Town of Danville. 2023-2031 Housing Element. Website: https://www.danville.ca.gov/886/2023--2031- Housing-Element. Accessed September 27, 2021. Town of Danville. 375 West El Pintado Road Residential Project Draft Environmental Report. July 2018. Town of Danville. 375 West El Pintado Road Residential Project Initial Study. January 2016. Town of Danville. The 2030 General Plan. Adopted March 19, 2013. Town of Danville, The 2030 General Plan, Chapter 6 Resources and Hazards. Town of Danville. The 2030 General Plan, Chapter 5 Public Facilities. Town of Danville, The 2030 General Plan, Chapter 6 Resources and Hazards – Figure 22. W-Trans. June 22, 2022. CEQA Analysis for the 375 El Pintado Road Project. WRA, Inc. Biological Resources Technical Report – 375 West El Pintado Road Project. June 2022. Appendix A Biological Resources Technical Report BIOLOGICAL RESOURCES TECHNICAL REPORT 375 WEST EL PINTADO ROAD PROJECT DANVILLE, CONTRA COSTA COUNTY, CALIFORNIA Prepared for: Prepared by: GMMR, LLC 230 Piedmont Lane Danville, California 94526 Attn: Jeff Stone jbstone@diamondconstruction.com WRA, Inc. 2169-G East Francisco Boulevard San Rafael, CA 94901 Attn: Hope Kingma hope.kingma@wra-ca.com WRA #31137 JUNE 2022 Biological Resources Technical Report WRA, Inc. June 2022 Page i TABLE OF CONTENTS 1.0 INTRODUCTION ............................................................................................................................4 1.1 Overview and Purpose ........................................................................................................................ 4 1.2 Project Description .............................................................................................................................. 4 2.0 REGULATORY BACKGROUND ........................................................................................................5 2.1 Federal and State Regulatory Setting ................................................................................................. 5 2.1.1 Vegetation and Aquatic Communities ......................................................................................... 5 2.1.2 Special-status Species .................................................................................................................. 6 2.2 Local Plans and Policies ....................................................................................................................... 8 3.0 ASSESSMENT METHODOLOGY ......................................................................................................9 3.1 Vegetation Communities and Other Land Cover Types ...................................................................... 9 3.2 Special-status Species ....................................................................................................................... 10 3.2.1 General Assessment ................................................................................................................... 10 3.3 Wildlife Corridors and Native Wildlife Nursery Sites ........................................................................ 11 4.0 ECOLOGICAL SETTING ................................................................................................................. 12 4.1 Soils and Topography ........................................................................................................................ 12 4.2 Climate and Hydrology ...................................................................................................................... 12 4.3 Land-use ............................................................................................................................................ 13 5.0 ASSESSMENT RESULTS ................................................................................................................ 14 5.1 Vegetation Communities and Other Land Cover .............................................................................. 14 5.1.1 Terrestrial Land Cover ................................................................................................................ 14 5.1.2 Aquatic Resources ...................................................................................................................... 15 5.2 Special-status Species ....................................................................................................................... 16 5.2.1 Special-status Plants .................................................................................................................. 16 5.2.2 Special-status Wildlife ................................................................................................................ 16 5.3 Wildlife Corridors and Native Wildlife Nursery Sites ........................................................................ 17 6.0 ANALYTICAL METHODOLOGY AND SIGNIFICANCE THRESHOLD CRITERIA ...................................... 18 7.0 IMPACTS AND MITIGATION EVALUATION ................................................................................... 19 7.1 Special-Status Species ....................................................................................................................... 19 7.2 Sensitive Natural Communities and Land Cover Types .................................................................... 20 7.3 Aquatic Resources ............................................................................................................................. 21 7.4 Wildlife Corridors and Native Wildlife Nursery Sites ........................................................................ 22 7.5 Local Policies and Ordinances ........................................................................................................... 22 7.6 Habitat Conservation Plans ............................................................................................................... 22 Biological Resources Technical Report WRA, Inc. June 2022 Page ii 8.0 REFERENCES ............................................................................................................................... 24 LIST OF TABLES Table 1. Vegetation Community and Land Cover Types ............................................................................ 14 LIST OF APPENDICES Appendix A – Figures Figure 1. Project Location Map Figure 2. Aerial Photograph of Study Area Figure 3. Project Site Plan Figure 4. Biological Communities in the Study Area Figure 5. Study Area Soils Figure 6. Jurisdictional Features Located within the Study Area Figure 7. Impacts to Waters of the U.S. and State Appendix B – Species Observed within and around the Study Area Appendix C – Special-Status Species Potential Table Appendix D – Site Photographs Appendix E – Preliminary Jurisdictional Determination (File No. SPN-2016-00149S) LIST OF PREPARERS Hope Kingma – Biology and Regulatory Permitting Director Amy May – Plant Biologist Tommy Dryer –Wildlife Biologist Chris Zumwalt – GIS Analyst Biological Resources Technical Report WRA, Inc. June 2022 Page iii LIST OF ACRONYMS BIOS Biogeographic Information and Observation System CCR California Code of Regulations CDFW California Department of Fish and Wildlife CESA California Endangered Species Act CEQA California Environmental Quality Act CFGC California Fish and Game Code CFR Code of Federal Regulations CNDDB California Natural Diversity Database CNPS California Native Plant Society Corps U.S. Army Corps of Engineers CWA Clean Water Act ESA Federal Endangered Species Act MBTA Migratory Bird Treaty Act MMP Habitat Mitigation and Monitoring Plan NCCP Natural Community Conservation Plan NMFS National Marine Fisheries Service NPPA Native Plant Protection Act OHWM Ordinary High Water Mark Rank California Rare Plant Ranks RWQCB Regional Water Quality Control Board SWRCB State Water Resource Control Board USDA U.S. Department of Agriculture USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey WBWG Western Bat Working Group WRA WRA, Inc. Biological Resources Technical Report WRA, Inc. June 2022 Page 4 1.0 INTRODUCTION This Biological Resources Technical Report evaluates existing biological resources, potential impacts, and proposed mitigation measures for the 375 West El Pintado Road Project (Project) located in the Town of Danville, Contra Costa County, California (Figures 1 and 2, Appendix A). The Study Area is located south of the intersection of El Cerro Boulevard and West El Pintado Road. The proposed Project involves the construction of a 57-unit condominium complex for senior housing, with associated amenities and infrastructure. 1.1 Overview and Purpose This report provides an assessment of biological resources within the Study Area and immediate vicinity. The purpose of the assessment was to develop and gather information on sensitive biological communities and special-status plant and wildlife species to support an evaluation of the Project under the California Environmental Quality Act (CEQA). This report describes the results of the site visits, which assessed the Study Area for (1) the presence of sensitive biological communities, special-status plant species, and special-status wildlife species, (2) the potential for the site to support special-status plant and wildlife species. Based on the results of the site assessment, potential impacts to sensitive biological communities and special-status species resulting from the proposed Project were evaluated. If the Project has the potential to result in potentially significant impacts to these biological resources, measures to avoid, minimize, or mitigate for those impacts are described. A biological resources assessment provides general information on the presence, or potential presence, of sensitive species and habitats. Additional focused studies may be required to support regulatory permit applications or to implement mitigation measures included in this report. This assessment is based on information available at the time of the study and on-site conditions that were observed on the dates the site was visited. Conclusions are based on currently available information used in combination with the professional judgement of the biologists completing this study. 1.2 Project Description The Project proponent proposes to construct a 57-unit condominium complex and parking for senior housing. Landscaping, bicycle parking, pickleball court and lounge, ADA accessible paseo walking path, stormwater treatment planters, stream mitigation corridor, and good neighbor wood fence are amenities proposed for this Project. Figure 3 in Appendix A provides the Project Site Plan. Biological Resources Technical Report WRA, Inc. June 2022 Page 5 2.0 REGULATORY BACKGROUND The following sections explain the regulatory context of the biological assessment, including applicable laws and regulations that were applied to the field investigations and analysis of potential project impacts. 2.1 Federal and State Regulatory Setting 2.1.1 Vegetation and Aquatic Communities CEQA provides protections for particular vegetation types defined as sensitive by the California Department of Fish and Wildlife (CDFW), and aquatic communities protected by laws and regulations administered by the U.S Army Corps of Engineers (Corps), State Water Resources Control Board (SWRCB), and Regional Water Quality Control Boards (RWQCB). The laws and regulations that provide protection for these resources are summarized below. Sensitive Natural Communities: Sensitive natural communities include habitats that fulfill special functions or have special values. Natural communities considered sensitive are those identified in local or regional plans, policies, regulations, or by the CDFW. CDFW ranks sensitive communities as "threatened" or "very threatened" (CDFW 2021a) and keeps records of their occurrences in its California Natural Diversity Database (CNDDB; CDFW 2021b). Vegetation alliances are ranked 1 through 5 in the CNDDB based on NatureServe's Heritage Methodology, with those alliances ranked globally (G) or statewide (S) as 1 through 3 considered sensitive. Impacts to sensitive natural communities identified in local or regional plans, policies, or regulations or those identified by the CDFW or U.S. Fish and Wildlife Service (USFWS) must be considered and evaluated under CEQA (CCR Title 14, Div. 6, Chap. 3, Appendix G). In addition, this general class includes oak woodlands that are protected by local ordinances under the Oak Woodlands Protection Act. Waters of the United States, Including Wetlands: The Corps regulates “Waters of the United States” under Section 404 of the Clean Water Act (CWA). Waters of the United States are defined in the Code of Federal Regulations (CFR) as including the territorial seas, and waters which are currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, such as tributaries, lakes and ponds, impoundments of waters of the U.S., and wetlands that are hydrologically connected with these navigable features (33 CFR 328.3). Potential wetland areas, according to the three criteria used to delineate wetlands as defined in the U.S. Army Corps of Engineers Wetlands Delineation Manual (Corps Manual; Environmental Laboratory 1987), are identified by the presence of (1) hydrophytic vegetation, (2) hydric soils, and (3) wetland hydrology. Unvegetated waters including lakes, rivers, and streams may also be subject to Section 404 jurisdiction and are characterized by an ordinary high water mark (OHWM) identified based on field indicators such as the lack of vegetation, sorting of sediments, and other indicators of flowing or standing water. The placement of fill material into Waters of the United States generally requires a permit from the Corps under Section 404 of the CWA. Waters of the State, Including Wetlands: The term “Waters of the State” is defined by the Porter-Cologne Act as “any surface water or groundwater, including saline waters, within the boundaries of the state.” The SWRCB and nine RWQCB protect waters within this broad regulatory scope through many different regulatory programs. Waters of the State in the context of a CEQA Biological Resources evaluation include wetlands and other surface waters protected by the State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State (SWRCB 2019). The SWRCB and RWQCB issue permits for the discharge of fill material into surface waters through the State Water Quality Biological Resources Technical Report WRA, Inc. June 2022 Page 6 Certification Program, which fulfills requirements of Section 401 of the CWA and the Porter-Cologne Water Quality Control Act. Projects that require a Clean Water Act permit are also required to obtain a Water Quality Certification. If a project does not require a federal permit but does involve discharge of dredge or fill material into surface waters of the State, the SWRCB and RWQCB may issue a permit in the form of Waste Discharge Requirements. Sections 1600-1616 of California Fish and Game Code: Streams and lakes, as habitat for fish and wildlife species, are regulated by CDFW under Sections 1600-1616 of California Fish and Game Code (CFGC). Alterations to or work within or adjacent to streambeds or lakes generally require a 1602 Lake and Streambed Alteration Agreement. The term “stream”, which includes creeks and rivers, is defined in the California Code of Regulations (CCR) as “a body of water that flows at least periodically or intermittently through a bed or channel having banks and supports fish or other aquatic life [including] watercourses having a surface or subsurface flow that supports or has supported riparian vegetation” (14 CCR 1.72). The term “stream” can include ephemeral streams, dry washes, watercourses with subsurface flows, canals, aqueducts, irrigation ditches, and other means of water conveyance if they support aquatic life, riparian vegetation, or stream-dependent terrestrial wildlife (CDFG 1994). Riparian vegetation has been defined as “vegetation which occurs in and/or adjacent to a stream and is dependent on, and occurs because of, the stream itself” (CDFG 1994). Removal of riparian vegetation also requires a Section 1602 Lake and Streambed Alteration Agreement from CDFW. 2.1.2 Special-status Species Endangered and Threatened Plants, Fish, and Wildlife. Specific species of plants, fish, and wildlife species may be designated as threatened or endangered by the federal Endangered Species Act (ESA), or the California Endangered Species Act (CESA). Specific protections and permitting mechanisms for these species differ under each of these acts, and a species’ designation under one law does not automatically provide protection under the other. The ESA (16 USC 1531 et seq.) is implemented by the USFWS and the National Marine Fisheries Service (NMFS). The USFWS and NMFS maintain lists of endangered and threatened plant and animal species (referred to as "listed species"). "Proposed" or "candidate" species are those that are being considered for listing, and are not protected until they are formally listed as threatened or endangered. Under the ESA, authorization must be obtained from the USFWS or NMFS prior to take of any listed species. “Take” under the ESA is defined as “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any such conduct.” Take under the ESA includes direct injury or mortality to individuals, disruptions in normal behavioral patterns resulting from factors such as noise and visual disturbance, and impacts to habitat for listed species. Actions that may result in take of an ESA-listed species may obtain a permit under ESA Section 10, or via the interagency consultation described in ESA Section 7. Federally listed plant species are only protected when take occurs on federal land. The ESA also provides for designation of critical habitat, which are specific geographic areas containing physical or biological features “essential to the conservation of the species”. Protections afforded to designated critical habitat apply only to actions that are funded, permitted, or carried out by federal agencies. Critical habitat designations do not affect activities by private landowners if there is no other federal agency involvement. The CESA (CFGC 2050 et seq.) prohibits a take of any plant and animal species that the CFGC determines to be an endangered or threatened species in California. CESA regulations include take protection for Biological Resources Technical Report WRA, Inc. June 2022 Page 7 threatened and endangered plants on private lands, as well as extending this protection to candidate species which are proposed for listing as threatened or endangered under CESA. The definition of a "take" under CESA ("hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill") only applies to direct impact to individuals, and does not extend to habitat impacts or harassment. CDFW may issue an Incidental Take Permit under CESA to authorize take if it is incidental to otherwise lawful activity and if specific criteria are met. Take of these species is also authorized if the geographic area is covered by a Natural Community Conservation Plan (NCCP), as long as the NCCP covers that activity. Fully Protected Species and Designated Rare Plant Species. This category includes specific plant and wildlife species that are designated in the CFGC as protected even if not listed under CESA or ESA. Fully Protected Species includes specific lists of birds, mammals, reptiles, amphibians, and fish designated in CFGC. Fully protected species may not be taken or possessed at any time. No licenses or permits may be issued for take of fully protected species, except for necessary scientific research and conservation purposes. The definition of "take" is the same under the California Fish and Game Code and the CESA. By law, CDFW may not issue an Incidental Take Permit for Fully Protected Species. Under the California Native Plant Protection Act (NPPA), CDFW has listed 64 “rare” or “endangered” plant species, and prevents “take”, with few exceptions, of these species. CDFW may authorize take of species protected by the NPPA through the Incidental Take Permit process, or under a NCCP. Special Protections for Nesting Birds and Bats. The federal Bald and Golden Eagle Protection Act provides relatively broad protections to both of North America’s eagle species (bald eagle [Haliaeetus leucocephalus] and golden eagle [Aquila chrysaetos)] that in some regards are similar to those provided by the ESA. In addition to regulations for special-status species, most native birds in the United States, including non-status species, have baseline legal protections under the Migratory Bird Treaty Act of 1918 (MBTA) and CFGC, i.e., sections 3503, 3503.5 and 3513. Under these laws/codes, the intentional harm or collection of adult birds as well as the intentional collection or destruction of active nests, eggs, and young is illegal. For bat species, the Western Bat Working Group (WBWG) designates conservation status for species of bats, and those with a high or medium-high priority are typically given special consideration under CEQA. Species of Special Concern, Movement Corridors, and Other Special-status Species under CEQA. To address additional species protections afforded under CEQA, CDFW has developed a list of special species as “a general term that refers to all of the taxa the CNDDB is interested in tracking, regardless of their legal or protection status.” This list includes lists developed by other organizations, including for example, the Audubon Watch List Species, the Bureau of Land Management Sensitive Species, and USFWS Birds of Special Concern. Plant species on the California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants with California Rare Plant Ranks (Rank) of 1 and 2, as well as some with a Rank of 3, are also considered special-status plant species and must be considered under CEQA. Some Rank 3 species and all Rank 4 species are typically only afforded protection under CEQA when such species are particularly unique to the locale (e.g., range limit, low abundance/low frequency, limited habitat) or are otherwise considered locally rare. Some species listed in the Rare, Unusual and Significant Plants of Alameda and Contra Costa Counties (web application) (Lake 2021) are considered sensitive (see Section 2.2). Additionally, any species listed as sensitive within local plans, policies and ordinances are likewise considered sensitive. Movement and migratory corridors for native wildlife (including aquatic corridors) as well as wildlife nursery sites are given special consideration under CEQA. Biological Resources Technical Report WRA, Inc. June 2022 Page 8 2.2 Local Plans and Policies Danville 2030 General Plan. The Danville 2030 General Plan contains policies pertaining to the following biological resources categories: • Wetlands, streams, riparian, and aquatic areas (Policy 21.01) • Vegetation Communities (Policy 21.01) • Plant Species (Policy 21.07) • Wildlife Species (Policies 21.07 and 21.11) Town of Danville Municipal Code 32-79 Tree Preservation. The Town of Danville requires a permit for the destruction and/or removal of protected trees on any property within the Town of Danville pursuant to subsection 32-79-6 of Danville’s Municipal Code. A “protected tree” is defined as: a) Any of the following native trees having a trunk or main stem which measures ten (10) inches or greater in diameter measured four and one-half (4-1/2) feet above natural grade or, for a multiple trunked tree, a combination of trunks totaling twenty (20) inches or greater in diameter measured four and one-half (4-1 /2) feet above natural grade, on any type of lot or property: 1. Coast Live Oak (Quercus agrifolia) 2. Valley Oak (Quercus lobata) 3. Canyon Live Oak (Quercus chrysolepis) 4. Blue Oak (Quercus doulgassi) 5. California Black Oak (Quercus kelloggii) 6. Interior Live Oak (Quercus wislizeni) 7. White Alder (Alnus rhombifolia) 8. California Bay (Umbellularia californica) 9. California Buckeye (Aesculus californica) 10. California Sycamore (Platanus racemosa) 11. Madrone (Arbutus menziesii) 12. London Plane Tree (Platanus acerifolia) b) Any Heritage Tree. c) Any Memorial Tree. d) A tree shown to be preserved on an approved Development Plan or specifically required by the Planning Commission to be retained as a condition of approval of an entitlement. A tree specifically required to be preserved by the Planning Commission shall require a subsequent Planning Commission approval for removal. e) A tree required to be planted as mitigation for the removal of a protected tree, as established under subsection32-79-6.d. The Town of Danville may require mitigation for the removal of protected trees as a condition of approval for a tree permit. Where mitigation is determined to be necessary, Danville may require the planting of on-site or off-site replacement trees (location and species to be determined by Danville) which are of a cumulative diameter necessary to equal the diameter of the tree(s) which are approved for removal. East Bay Rare Plants of Alameda and Contra Costa Counties. The East Bay Chapter of CNPS keeps track of approximately 125 rare and endemic native plants and plant communities that occur within Alameda and Contra Costa Counties. These 125 plant species are considered special-status. Biological Resources Technical Report WRA, Inc. June 2022 Page 9 3.0 ASSESSMENT METHODOLOGY On June 29 and October 15, 2021, WRA, Inc. (WRA) biologists visited the Study Area to map vegetation, aquatic communities, unvegetated land cover types, document plant and wildlife species present, and evaluate on-site habitat for the potential to support special-status species as defined by CEQA. Prior to the site visit, WRA biologists reviewed literature resources and performed database searches to assess the potential for sensitive biological communities (e.g., wetlands) and special-status species (e.g., endangered plants), including: • Soil Survey of Contra Costa County, California (U.S. Department of Agriculture [USDA] 1977) • Diablo 7.5-minute U.S. Geological Survey (USGS) quadrangle (USGS 2021a) • Contemporary aerial photographs (Google Earth 2021) • National Wetlands Inventory (USFWS 2021a) • California Aquatic Resources Inventory (SFEI 2021) • CNDDB (CDFW 2021b) • CNPS Inventory (CNPS 2021a) • Consortium of California Herbaria (CCH1 2021, CCH2 2021) • USFWS List of Federal Endangered and Threatened Species (USFWS 2021b) • Cornell Lab of Ornithology eBird Online Database (eBird 2021) • CDFW Publication, California Bird Species of Special Concern in California (Shuford and Gardali 2008) • CDFW and University of California Press publication California Amphibian and Reptile Species of Special Concern (Thomson et al. 2016) • A Manual of California Vegetation, Online Edition (CNPS 2021b) • Preliminary Descriptions of the Terrestrial Natural Communities (Holland 1986) • California Natural Community List (CDFW 2021a) Database searches (i.e., CNDDB, CNPS) for special-status species focused on the Antioch South, Clayton, Diablo, Dublin, Hayward, Las Trampas Ridge, Livermore, Tassajara, and Walnut Creek USGS 7.5-minute quadrangles. Following the remote assessment, WRA biologists completed a field review over the course of 2 days to document: (1) land cover types (e.g., terrestrial communities, aquatic resources), (2) existing conditions and to determine if such provide suitable habitat for any special-status plant or wildlife species, (3) if and what type of aquatic natural communities (e.g., wetlands) are present, and (4) if special-status species are present.1 3.1 Vegetation Communities and Other Land Cover Types During the site visits, WRA evaluated the species composition and area occupied by distinct vegetation communities, aquatic features, and other land cover types. Mapping of these classifications utilized a combination of aerial imagery and ground surveys. In most instances, communities are characterized and mapped based on distinct shifts in plant assemblage (vegetation) and follow the California Natural Community List (CDFW 2021a) and A Manual of California Vegetation, Online Edition (CNPS 2021b). These 1 Due to the timing of the assessment, it may or may not constitute protocol-level species surveys; see Section 5.2 if the site assessment would constitute a formal or protocol-level species survey. Biological Resources Technical Report WRA, Inc. June 2022 Page 10 resources cannot anticipate every component of every potential vegetation assemblage in California, and so in some cases, it is necessary to identify other appropriate vegetative classifications based on best professional judgment of WRA biologists. When undescribed variants are used, it is noted in the description. Vegetation alliances (natural communities) with a CDFW Rank of 1 through 3 (globally critically imperiled [S1/G1], imperiled [S2/G2], or vulnerable [S3/G3]) (CDFW 2021a), were evaluated as sensitive as part of this evaluation. A formal wetland delineation was conducted during the June 29, 2021 site visit. The site was reviewed for the presence of wetlands and other aquatic resources according to the methods described in the Corps Manual (Environmental Laboratory 1987), the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West (Corps 2008), and A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States (Lichvar and McColley 2008). Areas meeting these indicators were mapped as aquatic resources and categorized using the vegetation community classification methods described above. The presence of riparian habitat was evaluated based on woody plant species meeting the definition of riparian provided in A Field Guide to Lake and Streambed Alteration Agreements, Section 1600-1607, California Fish and Game Code (CDFG 1994) and based on best professional judgement of biologists completing the field surveys. 3.2 Special-status Species 3.2.1 General Assessment Potential occurrence of special-status species in the Study Area was evaluated by first determining which special-status species occur in the vicinity of the Study Area through a literature and database review as described above. Presence of suitable habitat for special-status species was evaluated during the site visits based on physical and biological conditions of the site as well as the professional expertise of the investigating biologists. The potential for each special-status species to occur in the Study Area was then determined according to the following criteria: • No Potential. Habitat on and adjacent to the site is clearly unsuitable for the species requirements (foraging, breeding, cover, substrate, elevation, hydrology, plant community, site history, disturbance regime). • Unlikely. Few of the habitat components meeting the species requirements are present, and/or the majority of habitat on and adjacent to the site is unsuitable or of very poor quality. The species is not likely to be found on the site. • Moderate Potential. Some of the habitat components meeting the species requirements are present, and/or only some of the habitat on or adjacent to the site is unsuitable. The species has a moderate probability of being found on the site. • High Potential. All of the habitat components meeting the species requirements are present and/or most of the habitat on or adjacent to the site is highly suitable. The species has a high probability of being found on the site. • Present. Species is observed on the site or has been recorded (i.e. CNDDB, other reports) on the site in the recent past. Biological Resources Technical Report WRA, Inc. June 2022 Page 11 If a more thorough assessment was deemed necessary, a targeted or protocol-level assessment or survey was conducted or recommended as a future study. If a special-status species was observed during the site visit, its presence was recorded and discussed below in Section 5.2. If designated critical habitat is present for a species, the extent of critical habitat present and an evaluation of critical habitat elements is provided as part of the species discussions below. 3.3 Wildlife Corridors and Native Wildlife Nursery Sites To account for potential impacts to wildlife movement/migratory corridors, biologists reviewed maps from the California Essential Connectivity Project (CalTrans 2010), and habitat connectivity data available through the CDFW Biogeographic Information and Observation System (BIOS; CDFW 2021). Additionally, aerial imagery (Google 2021) for the local area was referenced to assess if local core habitat areas were present within, or connected to the Study Area. This assessment was refined based on observations of on-site physical and/or biological conditions, including topographic and vegetative factors that can facilitate wildlife movement, as well as on-site and off-site barriers to connectivity. The potential presence of native wildlife nursery sites is evaluated as part of the site visit and discussion of individual wildlife species below. Examples of native wildlife nursery sites include nesting sites for native bird species (particularly colonial nesting sites), marine mammal pupping sites, and colonial roosting sites for other species (such as for monarch butterfly [Danaus plexippus]). Biological Resources Technical Report WRA, Inc. June 2022 Page 12 4.0 ECOLOGICAL SETTING The approximately 2-acre Study Area is located in the Town of Danville, Contra Costa County, California (Figures 1 and 2, Appendix A). The Study Area is bounded by West El Pintado Road to the north and east and development to the west and south. Land uses within the Study Area include vacant land and a single- family residence. Habitat conditions within the Study Area are generally disturbed due to the surrounding land use. Additional details of the local setting are below. 4.1 Soils and Topography The overall topography of the Study Area slopes to the west, with elevations ranging from approximately 355 to 375 feet above sea level. According to the Soil Survey of Contra Costa County (USDA 1977) and Web Soil Survey (USDA 2019), the Study Area is underlain by two soil mapping units: Alo clay, 15 to 30 percent slopes and Clear Lake clay, 0 to 15 percent slopes. Soils within the Study Area are shown in Figure 5 of Appendix A. The soil series of all the Study Area’s mapping units are summarized below. Alo clay, 15 to 30 percent slopes: This soil type underlays the majority of the Study Area. Alo clay consists of clay and occurs on hills at elevations ranging from 0 to 900 feet. The parent material is residuum weathered from sandstone and shale. From 0 to 14 inches the soil is slightly acid to moderately alkaline. Alo clay is well drained with medium runoff and is not considered hydric (USDA 2019). Clear Lake clay, 0 to 15 percent slopes: This soil type underlays the western portion of the Study Area. Clear Lake clay consists of clay and occurs on basin-floor remnants at elevations ranging from 0 to 1,060 feet. The parent material is clayey alluvium derived from metamorphic and sedimentary rock. Clear Lake clay is poorly drained with high runoff and is not considered hydric (USDA 2019). 4.2 Climate and Hydrology The Study Area is located in the northern region of the Town of Danville. The average monthly maximum temperature in the area is 70.8 degrees Fahrenheit, while the average monthly minimum temperature is 47.9 degrees Fahrenheit. Predominantly, precipitation falls as rainfall between November and March with an annual average precipitation of 25.1 inches (PRISM 2021). The regional watershed is the Suisun Bay region, within the 18050001 Hydrologic Unit Code (HUC)-8 watershed (USGS 2021b). The natural hydrology of the site has been altered due to surrounding development and stormwater discharges. The Study Area receives hydrological input from two local watershed areas upstream from the site. The larger watershed area (approximately 183 acres) discharges water onto the site via a large storm drain culvert with a reinforced concrete apron at the northern boundary of the property and drains through an intermittent stream southwesterly towards a concrete apron with 48-inch stormwater culvert in the southwestern corner where flows exit the site. Stormwater is then conveyed via the storm drain system to San Ramon Creek, a mapped blue line stream that occurs approximately 0.25-mile southwest of the Study Area. San Ramon Creek flows to Walnut Creek, which eventually flows to Suisun Bay. The smaller watershed area (approximately 27 acres) discharges water onto the site via a 24-inch corrugated metal pipe that is located in the northwestern corner of the Study Area where water is conveyed south in a narrow drainage (ephemeral stream) on the western boundary of the Study Area. Biological Resources Technical Report WRA, Inc. June 2022 Page 13 This ephemeral stream flows south where it converges with the intermittent stream at the concrete apron with a 48-inch stormwater culvert. Another ephemeral stream occurs along the southern boundary of the Study Area which flows east to west discharging into a 24-inch corrugated metal pipe located outside the Study Area. Detailed descriptions of aquatic resources are provided in Section 5.1 below. 4.3 Land-use The majority of the Study Area is non-native annual grassland. Developed areas include a single-family residence and driveway and culverts with concrete aprons. Detailed plant community descriptions are included in Section 5.1 below, and all observed plant species are included in Appendix B. Surrounding land uses include medical and dental offices to the north and west, residential cluster homes to the west, and single-family residential homes to the south. The Study Area was used for agriculture (orchard) in 1939 based on Google Earth imagery. The current land uses have not changed since at least 2002 (Google Earth 2021). Figure 2 in Appendix A provides an aerial photograph of the Study Area to illustrate the current conditions and surrounding land use. Biological Resources Technical Report WRA, Inc. June 2022 Page 14 5.0 ASSESSMENT RESULTS 5.1 Vegetation Communities and Other Land Cover WRA observed five land cover types within the Study Area: developed, non-native annual grassland, ephemeral stream, intermittent stream, and valley oak riparian forest and woodland. Land cover types within the Study Area are illustrated in Figure 4 (Appendix A). The non-sensitive land cover types in the Study Area include developed areas and non-native annual grassland, while the sensitive communities include ephemeral streams, intermittent stream, and valley oak riparian. Table 1, below, provides an overview of land cover types that occur within the Study Area. A list of observed plant species is provided in Appendix B. Appendix D provides representative site photographs. TABLE 1. VEGETATION COMMUNITY AND LAND COVER TYPES COMMUNITY/LAND COVERS SENSITIVE STATUS RARITY RANKING ACRES WITHIN STUDY AREA Terrestrial Community/Land Cover Developed Non-sensitive N/A 0.19 Non-native Annual Grassland Non-sensitive N/A 1.41 Valley Oak Riparian Sensitive S3/G3 0.26 Aquatic Resources Ephemeral Streams Sensitive N/A 0.007 Intermittent Stream Sensitive N/A 0.03 5.1.1 Terrestrial Land Cover Developed Area (no vegetation alliance). CDFW Rank: None. A single-family residence is located in the southeastern portion of the Study Area in APN 200-140-012. The single-family residence and associated driveway constitute the majority of developed area within the Study Area. Vegetation associated with developed land cover consists of landscaped trees and shrubs, scattered native plants, and ruderal vegetation. A few plant species observed in the developed land cover include Acacia sp., common pear (Pyrus communis), French broom (Genista monspessulana), giant reed (Arundo donax), glossy privet (Ligustrum lucidum), and oleander (Nerium oleander). This community is not considered a sensitive natural community by CDFW or any other regulatory entity. Non-native Annual Grassland (Avena spp. – Bromus spp. Herbaceous Semi-Natural Alliance). CDFW Rank: None. Non-native annual grassland is the largest natural community within the Study Area. The non- native annual grassland is dominated by oats (Avena sp.) and brome (Bromus sp). Grass species observed in this community include rescue grass (Bromus catharticus), ripgut brome (Bromus diandrus), and wild oats (Avena fatua). Forbs commonly found in the grassland community include field bindweed (Convolvulus arvensis), prickly lettuce (Lactuca serriola), and willow lettuce (Lactuca saligna). There are several valley oaks (Quercus lobata) scattered throughout the Study Area. Many of the other trees bordering the non-native annual grassland community are planted, ornamental species. This community is not considered sensitive by CDFW or any other regulatory entity. Biological Resources Technical Report WRA, Inc. June 2022 Page 15 Valley Oak Riparian (Quercus lobata Riparian Forest and Woodland Alliance). CDFW Rank: S3. The valley oak riparian vegetation community is dominated by valley oak (Quercus lobata) and occurs within the western portion of the Study Area adjacent to the ephemeral stream and the intermittent stream. Scattered willow trees (Salix sp.) also occur along the western ephemeral stream and intermittent stream. The herbaceous layer is continuous and consists of non-native annual grassland, as described above. 5.1.2 Aquatic Resources Ephemeral Streams (no vegetation alliance). CDFW Rank: Sensitive. Ephemeral streams are linear features that have indicators of an OHWM and may convey flows during or immediately after a precipitation event but remain dry otherwise. There are two ephemeral streams within the Study Area (Figures 4 and 6, Appendix A). Both ephemeral streams were dry during the June 29, 2021 site visit. Judy Bendix (Mosaic Associates) conducted a site visit on January 5, 2021 following a rain event (0.38” of rain on 01/04/2021). A small volume of surface flow was observed in the ephemeral streams during the site visit. A subsequent visit was conducted on January 13, 2021. No flow was observed in the ephemeral streams and a couple of isolated pools within the ephemeral streams were observed. This flow monitoring illustrates that the two ephemeral streams only flow during and immediately following a rain event. One ephemeral stream is located in the southern portion of the Study Area. There is tree canopy associated with this ephemeral stream but it is not consistent with the definition of a riparian vegetation community. The other ephemeral stream is located in the western portion of the Study Area. This ephemeral stream is surrounded by non-native annual grassland with a few hydrophytic plant species scattered within the drainage’s banks including annual beard grass (Polypogon monspeliensis) and water beard grass (Polypogon viridis). Intermittent Stream with an In-Stream Seasonal Wetland (no vegetation alliance). CDFW Rank: Sensitive. The intermittent stream present within the Study begins at a concrete apron at the northern end of the Study area and continues in a southwesterly direction to another concrete apron with 48-inch stormwater culvert (Figures 4 and 6, Appendix A). Dallis grass (Paspalum dilatatum) is the dominant plant species observed within the seasonal wetland that occurs in the intermittent stream, meeting the dominance test indicator for hydrophytic vegetation. Other hydrophytic plant species present within the seasonal wetland includes tall flatsedge (Cyperus eragrostis), common cocklebur (Xanthium strumarium), and barnyardgrass (Echinochloa crus-galli). Indicators of wetland hydrology observed within the seasonal wetland growing along the channel include surface water, high water table, saturation, drift deposits, drainage pattern, and oxidized rhizospheres along living roots. Judy Bendix (Mosaic Associates) conducted a site visit on January 5, 2021 following a rain event (0.38” of rain on 01/04/2021). A small volume of surface flow was observed in the intermittent stream during the site visit. A subsequent visit was conducted on January 13, 2021 and the intermittent stream supported standing water throughout the entire reach of the Study Area for over a week following the rain event. This flow monitoring illustrates that the intermittent stream supports flow characteristics of an intermittent drainage. On September 10, 2021, WRA submitted the delineation and map to the Corps requesting a preliminary jurisdictional determination of the extent of navigable waters of the United States and waters of the United States occurring on the project site. On November 22, 2021, the Corps issued a preliminary jurisdictional determination (File No. SPN-2016-00149S)(Appendix E). Biological Resources Technical Report WRA, Inc. June 2022 Page 16 5.2 Special-status Species 5.2.1 Special-status Plants Based upon a review of the resource databases listed in Section 3.0, 73 special-status plant species have been documented in the vicinity of the Study Area (Appendix C). No special-status plant species have the potential to occur in the Study Area. The special-status plant species documented from the greater vicinity are unlikely or have no potential to occur for one or more of the following: • Hydrologic conditions (e.g., meadows and seeps, playas, vernal pools) necessary to support the special-status plant species are not present in the Study Area; • Edaphic (soil) conditions (e.g., serpentine) necessary to support the special-status plant species are not present in the Study Area; • Topographic conditions (e.g., coastal bluff, montane, north-facing slope) necessary to support the special-status plant species are not present in the Study Area; • Unique pH conditions (e.g., alkaline) necessary to support the special-status plant species are not present in the Study Area; • Associated natural communities (e.g., chaparral, chenopod scrub, cismontane woodland, coastal bluff scrub, coastal prairie, inland dunes, pinyon and juniper woodland) necessary to support the special-status plant species are not present in the Study Area; and • The Study Area is geographically isolated (e.g., below elevation) from the documented range of the special-status plant species. 5.2.2 Special-status Wildlife Of the 38 special-status wildlife species documented in the vicinity of the Study Area, most are excluded from the Study Area based on a lack of suitable habitat features (Appendix C). Features not found within the Study Area that are required to support special-status wildlife species include: • Vernal pools • Perennial aquatic habitat (e.g. streams, rivers or ponds) • Tidal marsh areas • Coastal or montane forest • Serpentine or loose-textured sandy soils • Chaparral habitat or large rock structures • Large mammal burrows • Caves, mine shafts or abandoned buildings Biological Resources Technical Report WRA, Inc. June 2022 Page 17 The absence of such habitat features eliminates components critical to the survival or movement of most special-status species found in the vicinity. For instance, California red-legged frog (Rana draytonii) is known to occur within 2 miles of the Study Area. However, suitable aquatic habitat and movement corridors connecting the Study Area to source populations are absent, precluding this species from existing within the Study Area. Given the Study Area’s relative proximity to sensitive habitats on the San Francisco Bay, many species documented nearby are additionally obligates to marine or tidal marsh habitats which are not present on or in the immediate vicinity the Study Area. Two special status species have a low to moderate potential to occur in the immediate vicinity of or in portions of the Study Area: pallid bat (Antrozous pallidus) and white-tailed kite (Elanus leucurus). These species are discussed in greater detail below. No critical habitat is present within the Study Area. Pallid bat (Antrozous pallidus). CDFW Species of Special Concern, WBWG High Priority. Low Potential. Pallid bats are distributed from southern British Columbia and Montana to central Mexico, and east to Texas, Oklahoma, and Kansas. This species occurs in a number of habitats ranging from rocky arid deserts to grasslands, and into higher elevation coniferous forests. Roosts are typically in rock crevices, tree hollows, mines, caves, and a variety of man-made structures, including vacant and occupied buildings. Tree roosting has been documented within snags and basal hollows of conifers, and within bole cavities in oak trees. Pallid bats are primarily insectivorous, feeding on large prey that is usually taken on the ground but sometimes in flight. Prey items include arthropods such as scorpions, ground crickets, and cicadas (WBWG 2017). There are several pallid bat CNDDB occurrences in the Project vicinity (CDFW 2021). Mature trees within the Study Area (primarily oaks) may contain cavities or snags suitable for roosting by pallid bat. In addition, the residence within the Study Area may provide marginal roosting habitat. A targeted bat habitat assessment was not performed under this biological assessment. White-tailed kite (Elanus leucurus). CDFW Fully Protected Species. Moderate Potential. The white-tailed kite is resident in open to semi-open habitats throughout the lower elevations of California, including grasslands, savannahs, woodlands, agricultural areas and wetlands. Vegetative structure and prey availability seem to be more important habitat elements than associations with specific plants or vegetative communities (Dunk 1995). Nests are constructed mostly of twigs and placed in trees, often at habitat edges. Nest trees are highly variable in size, structure, and immediate surroundings, ranging from shrubs to trees greater than 150 feet tall (Dunk 1995). This species preys upon a variety of small mammals, as well as other vertebrates and invertebrates. Several large coast live oak trees within the Study Area have the potential to support white-tailed kite nesting and this species has been observed in the vicinity of the Study Area (eBird 2021). 5.3 Wildlife Corridors and Native Wildlife Nursery Sites No native wildlife nursery sites are present in the Study Area. The Study Area is not within a designated wildlife corridor (CalTrans 2010). The Study Area is bordered by dense residential development to the south and west, with Highway 680 occurring directly northeast. While common wildlife species presumably utilize the site to some degree for movement at a local scale, the Study Area itself does not provide corridor functions beyond connecting similar disturbed or lightly developed parcels in surrounding areas. Biological Resources Technical Report WRA, Inc. June 2022 Page 18 6.0 ANALYTICAL METHODOLOGY AND SIGNIFICANCE THRESHOLD CRITERIA Pursuant to Appendix G, Section IV of the State CEQA Guidelines, a project would have a significant impact on biological resources if it would: a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service; b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service; c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites; e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance; and/or, f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan. These thresholds were utilized in completing the analysis of potential project impacts for CEQA purposes. For the purposes of this analysis, a “substantial adverse effect” is generally interpreted to mean that a potential impact could directly or indirectly affect the resiliency or presence of a local biological community or species population. Potential impacts to natural processes that support biological communities and special-status species populations that can produce similar effects are also considered potentially significant. Impacts to individuals of a species or small areas of existing biological communities may be considered less than significant if those impacts are speculative, beneficial, de minimis, and/or would not affect the resiliency of a local population. Biological Resources Technical Report WRA, Inc. June 2022 Page 19 7.0 IMPACTS AND MITIGATION EVALUATION Using the CEQA analysis methodology outlined in Section 6.2 above, the following section describes potential significant impacts to sensitive resources within the Project Area as well as suggested mitigation measures which are expected to reduce impacts to less than significant. 7.1 Special-Status Species This section analyzes the Project’s potential impacts and mitigation for special-status species in reference to the significance threshold outlined in CEQA Appendix G, Part IV (a): Does the project have the potential to have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? Potential impacts and mitigation for potentially significant impacts are discussed below: White-tailed Kite and Common Nesting Birds Several trees within the Project Area could support nesting by white-tailed kites. Also, common song birds (passerine birds) could nest in the small trees and shrubs within the Project Area. All of these birds are protected under the MBTA (50 CFR 10.13) and their eggs and young are protected under California Fish and Game Code Sections 3503, 3503.5. Impacts to these and other nesting bird species would be considered a potentially significant impact. Potential Impact BIO-1: Potential impacts to nesting bird species from the proposed Project include disturbance to nesting birds and possible death of adults and/or young. Impacts to nesting birds from the proposed Project would be potentially significant. To reduce potential impacts to nesting bird species to a less-than-significant level, the following measures will be implemented: Mitigation Measure BIO-1: If Project activities must be conducted during the nesting season (March 1 and September 1), a pre-construction nesting bird survey will be conducted by a qualified biologist no more than 7 days prior to vegetation removal or initial ground disturbance. The survey will include the Project Site and surrounding vicinity to identify the location and status of any nests that could potentially be affected either directly or indirectly by Project activities. If active nests of native nesting bird species are located during the nesting bird survey, a work exclusion zone will be established around each nest by the qualified biologist. Established exclusion zones will remain in place until all young in the nest have fledged or the nest otherwise becomes inactive (e.g., due to predation). Appropriate exclusion zone sizes will be determined by a qualified biologist and will vary based on species, nest location, existing visual buffers, noise levels, and other factors. An exclusion zone radius may be as small as 50 feet for common, disturbance-adapted species, or as large as 250 feet or more for raptors. Exclusion zone size will be reduced from established levels by a qualified biologist if nest monitoring findings indicate that Project activities do not adversely impact the nest, and if a reduced exclusion zone would not adversely affect the nest. Biological Resources Technical Report WRA, Inc. June 2022 Page 20 Implementation of these mitigation measures will reduce potential impacts to nesting birds to a level that is less than significant. Pallid bat There are several CNDDB occurrences of pallid bat within the Project vicinity (CDFW 2021) and mature trees within the Study Area (primarily oaks) may contain cavities or snags suitable for roosting. In addition, the residence within the Study Area may provide marginal roosting habitat. Potential Impact BIO-2: Direct impacts to roosting special-status bat species could occur due to the removal or modification of large trees (diameter-at-breast height >24 inches) or snags, or building demolition associated with the proposed Project. Accordingly, impacts to pallid bat are regarded as potentially significant. To reduce potential impacts to special-status bat species to a less-than-significant level, the following measures shall be implemented: Mitigation Measure BIO-2: To avoid impacts to roosting bats, tree removal and building demolition should occur between October 1 and March 31, outside of the maternity roosting season (when female bats may have dependent young). If tree removal or building demolition must occur between April 1 and September 30, a bat roost habitat assessment should be conducted by a qualified biologist. The bat roost habitat assessment would determine the likelihood of the Project site supporting roosting bats. If the assessment identifies suitable or potentially occupied roosts within the Project site, a pre-construction bat survey should be performed no more than 14 days prior to tree or building removal using site appropriate survey methods to determine if potential roost structures are occupied. If special-status bat species are detected during these surveys, appropriate, species and roost- specific mitigation measures will be implemented. Such measures may include postponing the removal of the trees or building until the end of the maternity roosting season, exclusionary work buffers, or consultation with CDFW. Implementation of these mitigation measures will reduce potential impacts to special-status bats to a level that is less than significant. 7.2 Sensitive Natural Communities and Land Cover Types This section addresses the question: b) Does the Project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service; Sensitive natural communities within the Project Area include: ephemeral streams, intermittent stream, and associated riparian vegetation. Impact BIO- 3: The proposed Project will result in impacts to 435 linear feet of channels, including the intermittent stream, open waters and the western ephemeral stream, totaling 0.04 acre (Figure 7, Appendix A). The total area of impact below the top-of- Biological Resources Technical Report WRA, Inc. June 2022 Page 21 bank will be 5,255 square feet (0.12 acre). As such, impacts to these sensitive natural communities and aquatic resources would be considered significant. Impact BIO-4: The proposed Project will also result in impacts to approximately 10 trees that would be considered riparian vegetation growing in association with the intermittent stream and western ephemeral stream on the Project site. As such, impacts to riparian habitat would be considered significant. To reduce impacts to the riparian sensitive natural community and jurisdictional stream channels to a less- than-significant level, the following mitigation measures shall be implemented: Mitigation Measure BIO-3: The Project will obtain a Section 404 Permit from the Corps and a Section 401 Water Quality Certification from the RWQCB prior to any impacts to waters of the U.S. and State. In addition, the Project will obtain a Lake and Streambed Alteration Agreement from the CDFW prior to impacts to CDFW jurisdictional stream channels or riparian habitats. The Project will prepare a Habitat Mitigation and Monitoring Plan (HMMP) to satisfy the requirements of the Corps, RWQCB and CDFW permits to achieve no net-loss of wetlands and waters of the U.S./State. All compliance measures included in the permits will be adhered to. Mitigation Measure BIO-4: To mitigate for impacts to waters of the U.S. and State, the applicant proposes to construct 304 linear feet of main channel and 146 linear feet of meandering tributary channel. Approximately 1,300 square feet of wetlands are expected to develop along the mitigation channels and 2,553 square feet of seasonal wetlands are expected to become established within the floodplain, creating a total of 3,853 square feet (0.088 acre) of mitigation wetlands. The total mitigation area below top-of-bank will be 12,400 square feet (0.28 acre). This will provide 1:1 replacement for the total linear feet impacts and 2:1 replacement for the impacted acreage of in-channel wetlands. Mitigation Measure BIO-5: The Project will plant valley oak and willow trees to offset the removal of valley oak and willow trees from the riparian sensitive natural community. A replanting plan and a HMMP will be submitted to the City, Corps, RWQCB and CDFW for approval prior to project implementation. Implementation of these mitigation measure will reduce impacts to sensitive natural communities and aquatic resources to a level that is less than significant. 7.3 Aquatic Resources This section analyzes the Project’s potential impacts and mitigation for wetlands and other areas presumed or determined to be within the jurisdiction of the Corps or BCDC in reference to the significance threshold outlined in CEQA Appendix G, Part IV (c): c) Does the Project have the potential to have a substantial adverse effect on state or federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means; See Impact BIO-3 and Mitigation Measures BIO-3 and BIO-4 above. Biological Resources Technical Report WRA, Inc. June 2022 Page 22 7.4 Wildlife Corridors and Native Wildlife Nursery Sites This section analyzes the Project’s potential impacts and mitigation for habitat corridors and linkages in reference to the significance threshold outlined in CEQA Appendix G, Part IV (d): d) Does the Project have the potential to interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites; As noted in Section 5.3, no portions of the Project Area provide connectivity between areas of suitable habitat. For terrestrial species, all portions of the Project Area are within a greater context of urban development, and for aquatic species, there is no connectivity between the Project Area and upstream or downstream freshwater habitats. No impact will occur to migratory corridors for terrestrial and aquatic species. 7.5 Local Policies and Ordinances This section analyzes the Project’s potential impacts and mitigation based on conflicts with local policies and ordinances in reference to the significance threshold outlined in CEQA Appendix G, Part IV (e): e) Does the Project have the potential to conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance; Local plans and policies related to biological resources examined in this analysis are: Danville 2030 General Plan The Danville 2030 General Plan contains policies pertaining to wetlands, streams, riparian, and aquatic areas (Policy 21.01), vegetation communities (Policy 21.01), plant species (Policy 21.07), and wildlife species (Policies 21.07 and 21.11) that may be considered during the CEQA process. Town of Danville Municipal Code 32-79 Tree Preservation The proposed Project will remove 49 trees, including 1 heritage tree and 9 protected trees from the Project Area. The Town of Danville requires a permit for the destruction and/or removal of protected trees on any property within the Town of Danville. The arborist report prepared for the Project was submitted with the permit application to the Town of Danville. The Project will comply with local plans and policies. The Town of Danville may require mitigation for the removal of protected trees as a condition of approval for the tree permit. Where mitigation is determined to be necessary, Danville may require the planting of on-site or off-site replacement trees (location and species to be determined by Danville) which are of a cumulative diameter necessary to equal the diameter of the tree(s) which are approved for removal. 7.6 Habitat Conservation Plans This section analyzes the Project’s potential impacts and mitigation based on conflicts with any adopted local, regional, and state habitat conservation plans in reference to the significance threshold outlined in CEQA Appendix G, Part IV (f): Biological Resources Technical Report WRA, Inc. June 2022 Page 23 f) Does the Project have the potential to conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan. The proposed Project will not conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan. No such plan exists applicable to the Project Site. No impact will occur. Biological Resources Technical Report WRA, Inc. June 2022 Page 24 8.0 REFERENCES California Department of Fish and Game. 1994. A Field Guide to Lake and Streambed Alteration Agreements, Sections 1600-1607. Environmental Services Division, California Department of Fish and Wildlife, Sacramento, California. California Department of Fish and Wildlife. 2021a. California Natural Communities List. Available online at: https://wildlife.ca.gov/Data/VegCAMP/Natural-Communities. Most recently accessed: October 2021. CDFW. 2021b. California Natural Diversity Database, RareFind 5. Available online at: https://wildlife.ca.gov/Data/CNDDB/Maps-and-Data. Most recently accessed: October 2021. California Department of Transportation (CalTrans). 2010. California Essential Habitat Connectivity Project: A Strategy for Conserving a Connected California. Prepared for California Department of Transportation, California Department of Fish and Game, and Federal Highways Administration. Available online at: https://www.wildlife.ca.gov/Conservation/Planning/Connectivity/CEHC. Most recently accessed: October 2021. California Native Plant Society (CNPS). 2021a. Inventory of Rare and Endangered Plants (online edition, v9-01 0.0). Available online at: http://rareplants.cnps.org/. Most recently accessed: October 2021. CNPS. 2021b. A Manual of California Vegetation, Online Edition. Available online at: http://vegetation.cnps.org. Most recently accessed: October 2021. Consortium of California Herbaria 1 (CCH1). 2021. CCH1: Featuring California Vascular Plant Data from the Consortium of California Herbaria and Other Sources. Data provided by the Consortium of California Herbaria. Available online at: http://ucjeps.berkeley.edu/consortium/. Most recently accessed: October 2021. Consortium of California Herbaria 2 (CCH2). 2020. CCH2 Portal. Available online at: http://cch2.org/portal/index.php. Most recently accessed: October 2021. Cornell Lab of Ornithology. 2021. eBird: An online database of bird distribution and abundance. Available online at: Ithaca, NY. http://www.ebird.org. Most recently accessed: October 2021. Dunk, JR. 1995. White-tailed Kite (Elanus leucurus), The Birds of North America Online (A Poole, Ed.). Ithaca: Cornell Lab of Ornithology. Available online at: http://bna.birds.cornell.edu/bna/species/178. Most recently accessed: November 2021. Environmental Laboratory. 1987. Corp of Engineers Wetlands Delineation Manual. Department of the Army, Waterways Experiment Station, Technical Report Y-87-1, Vicksburg, Mississippi. Google Earth. 2021. Aerial Imagery 1939-2021. Most recently accessed: October 2021. Holland, R. F. 1986. Preliminary descriptions of the terrestrial natural communities of California. State of California, The Resources Agency, Department of Fish and Game, Sacramento, CA. Lake, D [compiler]. 2021. Rare, Unusual, and Significant Plants of Alameda and Contra Costa Counties (web application). Berkeley, California: East Bay Chapter of the California Native Plant Society. Available online at: https://ruspdb.ebcnps.org/cgi-bin/ebrare/ebrare.cgi. Most recently accessed: October 2021. Lichvar, R. W., and S. McColley. 2008. A Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States. Available online at: https://www.spk.usace.army.mil/Portals/12/documents/regulatory/pdf/Ordinary_High_Water mark_Manual_Aug_2008.pdf. Most recently accessed: October 2021. PRISM, Climate Group. 2021. Time Series Values for Individual Locations. Available online at: https://prism.oregonstate.edu/explorer/. Most recently accessed: October 2021. Biological Resources Technical Report WRA, Inc. June 2022 Page 25 San Francisco Estuary Institute (SFEI). 2021. California Aquatic Resource Inventory (CARI) version 0.3. Available online at: https://www.sfei.org/data/california-aquatic-resource-inventory-cari- version-03-gis-data#sthash.9SjW0wBH.dpbs. Most recently accessed: October 2021. Shuford, W. D., and T. Gardali, eds. 2008. California Bird Species of Special Concern: A ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California. Western Field Ornithologists, Camarillo, California, and California Department of Fish and Game, Sacramento. State Water Resources Control Board (SWRCB). 2019. State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State, May 14, 2019. Thomson, R. C., A. N. Wright, and H. B. Shaffer. 2016. California amphibian and reptile species of special concern. Co-published by the California Department of Fish and Wildlife and University of California Press, Oakland, California. U.S. Army Corps of Engineers (Corps). 2008. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region (Version 2.0). Page 135. U.S. Army Engineer Research and Development Center, ERDC/EL TR-08-28, Vicksburg, Mississippi. U.S. Department of Agriculture (USDA). 1977. Soil Survey of Contra Costa County, California. Available online at: https://www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/california/CA013/0/contracosta.pdf. Most recently accessed: October 2021. USDA. 2019. Web Soil Survey. Available online at: https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm. Most recently accessed: October 2021. U.S. Fish and Wildlife Service (USFWS). 2021a. National Wetlands Inventory. Available online at: http://www.fws.gov/nwi. Most recently accessed: October 2021. USFWS. 2021b. List of Federal Endangered and Threatened Species. Available online at: https://ecos.fws.gov/ipac/. Most recently accessed: October 2020. U.S. Geological Survey (USGS). 2021a. Diablo and Las Trampas Ridge Quadrangles, California. 7.5-minute topographic map. USGS. 2021b. Locate Your Watershed. Available online at: https://water.usgs.gov/wsc/map_index.html. Most recently accessed: October 2021. Western Bat Working Group (WBWG). 2017. Western Species Accounts. Available online at: http://wbwg.org/western-bat-species/. Most recently accessed: October 2021. Biological Resources Technical Report WRA, Inc. February 2022 Page 26 THIS PAGE INTENTIONALLY LEFT BLANK. APPENDIX A – FIGURES THIS PAGE INTENTIONALLY LEFT BLANK. Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ C E Q A \ F i g 1 L o c a t i o n . m x d Project Area View Extent GMMR, LLC Danville DevelopmentDanville, California 0 0.50.25 Miles Sources: National Geographic, WRA | Prepared By: czumwalt, 9/14/2021 Figure 1. Project Location Map ± < WestElPintadoRoad P a t h : L :\A c a d 2 0 0 0 F i l e s \3 1 0 0 0 \3 1 1 3 7 \G I S \A r c M a p \F i g 2 A e r i a l .m x d Study_Area GMMR, LLC Danville DevelopmentDanville, California Sources: DigitalGlobe 2016 Aerial, WRA | Prepared By: czumwalt, 6/30/2021 0 8040Feet Figure 2. Aerial Photograph of Study Area ± WestElPintadoRoad Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ F i g 3 B i o C o m m s . m x d Study Area Sensitive Communiies Valley Oak Riparian (0.26 ac.) Intermittent Stream with an In-stream Wetland (0.03 ac.) Ephemeral Stream (0.007 ac.) Non-sensitive Communities Developed (0.19 ac.) Non-native annual grassland (1.41 ac.) GMMR, LLC Danville DevelopmentDanville, California Sources: DigitalGlobe 2016 Aerial, WRA | Prepared By: czumwalt, 11/15/2021 0 8040Feet Figure 4. Biological Communities in the Study Area ± W E lPi n t a d o El C err o Bl vd W i n f i e l d L n 680 W E l P i n t a d o Si nc l a ir F w y W E l P i nt a d o Elsie Dr Cc AaE Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ D e l i n 2 0 2 1 0 8 1 1 \ D e l i n 2 0 2 1 0 8 1 1 . a p r x GMMR, LLC Danville Development Danville, California 0 10050 Feet Sources: USDA NAIP Imagery 2020, USDA SURRGO, WRA | Prepared By: njander, 8/11/2021 Figure 5. Study Area Soils Study Area (1.90 ac.) AaE: Alo clay, 15 to 30 percent slopes Cc: Clear Lake clay, 0 to 15 percent slopes, MLRA 15 !( !(!( !( W i n f i e l d L n W i n f i e l d L n W ElPintado E l s i e D r W E l P in t a d o W E l P i n t a d o ES 2 ES 1 IS 2 IS 1 U 2 U 1W1 W 2 37.828674, -122.001541 37.827856, -122.000094 Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ D e l i n 2 0 2 1 0 8 1 1 \ D e l i n 2 0 2 1 0 8 1 1 . a p r x Study Area (1.9 ac.) !(Sample Point Culvert Top of Bank Potential Waters of the United States and State Intermittent Stream with an In-Stream Seasonal Wetland (789 sq. ft., 0.03 ac., 221 ln. ft) (Drainage B) Concrete Aprons/Open Water - (Non-vegetated Waters) (0.01 ac.) Ephemeral Stream -1' wide (.007 ac., 307 ln. ft.) (Drainages A and C) ES-1 and ES-2 GMMR, LLC Danville Development Danville, California Sources: ESRI World Imagery, WRA | Prepared By: czumwalt, 2/26/2022 0 10050 Feet Figure 6. Jurisdictional Features Located within the Study Area ± ID Type Acres Linear Feet IS-1 Intermittent Stream 0.001353 10 IS-2 Intermittent Stream 0.025188 211 ES-1 Ephemeral Stream 0.002912 135 ES-2 Ephemeral Stream 0.002483 172 Waters of the U.S. and State !( !( !( !( WestElPintadoRoadU 2 U 1W1 W 2 P a t h : L :\A c a d 2 0 0 0 F i l e s \3 1 0 0 0 \3 1 1 3 7 \G I S \A r c M a p \F i g X I m p a c t s .m x d Study Area !(Sample Point !(Culvert Top of Bank Impacts to Waters of the U.S. and State Intermittent Stream with an In-Stream Seasonal Wetland - (789 sq. ft., 0.03 ac., 221 ln. ft.) (Drainage B) Concrete Aprons/Open Water (Non-vegetated Waters) - (0.01 ac.) ES-2 - Ephemeral Stream - 1' Wide - (0.003 ac., 172 ln. ft.) Impacts to Waters of the State Area Below TOB - 5,255 sq. ft, (0.12 ac.), 307 lf. GMMR, LLC Danville DevelopmentDanville, California Sources: Maxar 11/4/2019 Aerial, WRA | Prepared By: czumwalt, 3/4/2022 0 8040Feet Figure 7. Impacts to Waters of the U.S. and State ± APPENDIX B – SPECIES OBSERVED IN AND AROUND THE STUDY AREA THIS PAGE INTENTIONALLY LEFT BLANK. Table B1. Plant Species Observed in and around the Study Area Scientific Name Common Name Origin Wetland Status (AW 2018) Acacia sp. - - - Anemopsis californica Yerba mansa native OBL Arundo donax Giant reed non-native (invasive) FACW Avena fatua Wildoats non-native (invasive) - Bromus catharticus Rescue grass non-native - Bromus diandrus Ripgut brome non-native (invasive) - Convolvulus arvensis Field bindweed non-native - Cynodon dactylon Bermuda grass non-native (invasive) FACU Cyperus eragrostis Tall cyperus native FACW Echinochloa crus-galli Barnyard grass non-native FACW Epilobium brachycarpum Willow herb native FAC Euphorbia sp. - - - Galium aparine Cleavers native FACU Genista monspessulana French broom non-native (invasive) - Geranium sp. - - - Hedera canariensis Canary ivy non-native (invasive) - Helminthotheca echioides Bristly ox-tongue non-native (invasive) FAC Heteromeles arbutifolia Toyon native - Hordeum marinum ssp. gussoneanum Mediterranean barley non-native (invasive) FAC Hypericum calycinum Aaron's beard non-native - Juglans hindsii Northern California black walnut native FAC Lactuca saligna Willow lettuce non-native UPL Lactuca serriola Prickly lettuce non-native FACU Ligustrum lucidum Glossy privet non-native (invasive) - Malvella leprosa Alkali mallow native FACU Table B1. Plant Species Observed in and around the Study Area Scientific Name Common Name Origin Wetland Status (AW 2018) Medicago polymorpha Bur clover non-native (invasive) FACU Nerium oleander Oleander non-native - Oenothera rosea Pink evening primrose non-native FACW Paspalum dilatatum Dallis grass non-native FAC Phalaris aquatica Harding grass non-native (invasive) FACU Platanus sp. - - - Polypogon monspeliensis Annual beard grass non-native (invasive) FACW Polypogon viridis Water beard grass non-native FACW Populus fremontii ssp. fremontii Cottonwood native FAC Pyracantha coccinea Scarlet firethorn non-native (invasive) - Pyrus communis Common pear non-native - Quercus lobata Valley oak native FACU Rubus armeniacus Himalayan blackberry non-native (invasive) FAC Rumex crispus Curly dock non-native (invasive) FAC Salix sp. - - - Sequoia sempervirens Coast redwood native - Torilis arvensis Field hedge parsley non-native (invasive) - Ulmus sp. - - - Vicia sp. - - - Washingtonia sp. - - - Xanthium strumarium Cocklebur native FAC Table B2. Wildlife Species Observed in and around the Study Area Scientific name Common Name Status Mammals Sciurus niger Eastern fox squirrel No status Birds Aphelocoma californica Western California scrub-jay No status Baeolophus inornatus Oak titmouse No status Calypte anna Anna’s hummingbird No status Catharus guttatus Hermit thrush No status Corvus brachyrhynchos American crow No status Drybates nuttallii Nuttall’s woodpecker No status Haemorhous mexicanus House finch No status Junco hyemalis Dark-eyed junco No status Melozone crissalis California towhee No status Poecile rufescens Chestnut-backed chickadee No status Psaltriparus minimus Bushtit No status Regulus calendula Ruby-crowned kinglet No status Sayornis nigricans Black phoebe No status Setophaga coronta Yellow-rumped warbler No status Sitta carolinensis White-breasted nuthatch No status Spinus psaltria Lesser goldfinch No status Zonotrichia leucophrys White-crowned sparrow No status APPENDIX C – SPECIAL-STATUS SPECIES POTENTIAL TABLE THIS PAGE INTENTIONALLY LEFT BLANK. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR PLANTS large-flowered fiddleneck Amsinckia grandiflora FE, SE, Rank 1B.1 Cismontane woodland and valley and foothill grassland. Elevation ranges from 885 to 1805 feet (270 to 550 meters). Blooms (Mar) Apr-May. No Potential. Suitable elevation does not occur within the Study Area. bent-flowered fiddleneck Amsinckia lunaris Rank 1B.2 Cismontane woodland, coastal bluff scrub, valley and foothill grassland. Elevation ranges from 10 to 1640 feet (3 to 500 meters). Blooms Mar- Jun. Unlikely. Suitable cismontane woodland and coastal bluff habitat do not occur within the Study Area. California androsace Androsace elongata ssp. acuta Rank 4.2 Chaparral, cismontane woodland, coastal scrub, meadows and seeps, pinyon and juniper woodland, and valley and foothill grassland. Elevation ranges from 490 to 4280 feet (150 to 1305 meters). Blooms Mar-Jun. Unlikely. Suitable chaparral, cismontane woodland, coastal scrub, meadow and seep, and pinyon and juniper woodland habitat and elevation do not occur within the Study Area. slender silver moss Anomobryum julaceum Rank 4.2 Broad-leafed upland forest, lower montane coniferous forest, and north coast coniferous forest. Elevation ranges from 330 to 3280 feet (100 to 1000 meters). No Potential. Suitable forest habitat does not occur within the Study Area. coast rockcress Arabis blepharophylla Rank 4.3 Broad-leafed upland forest, coastal bluff scrub, coastal prairie, and coastal scrub. Elevation ranges from 10 to 3610 feet (3 to 1100 meters). Blooms Feb-May. No Potential. Suitable habitat does not occur within the Study Area. Mt. Diablo manzanita Arctostaphylos auriculata Rank 1B.3 Chaparral and cismontane woodland. Elevation ranges No Potential. Suitable habitat and elevation do not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR from 445 to 2135 feet (135 to 650 meters). Blooms Jan-Mar. Contra Costa manzanita Arctostaphylos manzanita ssp. laevigata Rank 1B.2 Chaparral. Elevation ranges from 1410 to 3610 feet (430 to 1100 meters). Blooms Jan- Mar (Apr). No Potential. Suitable chaparral habitat and elevation do not occur within the Study Area. alkali milk-vetch Astragalus tener var. tener Rank 1B.2 Playas, valley and foothill grassland, and vernal pools. Elevation ranges from 5 to 195 feet (1 to 60 meters). Blooms Mar-Jun. Unlikely. Suitable playa and vernal pool habitat do not occur within the Study Area. crownscale Atriplex coronata var. coronata Rank 4.2 Chenopod scrub, valley and foothill grassland, and vernal pools. Elevation ranges from 5 to 1935 feet (1 to 590 meters). Blooms Mar-Oct. Unlikely. Suitable chenopod scrub and vernal pool habitat do not occur within the Study Area. brittlescale Atriplex depressa Rank 1B.2 Chenopod scrub, meadows and seeps, playas, valley and foothill grassland, and vernal pools. Elevation ranges from 5 to 1050 feet (1 to 320 meters). Blooms Apr-Oct. Unlikely. Suitable chenopod scrub, meadow and seep, playa, and vernal pool habitat do not occur within the Study Area. lesser saltscale Atriplex minuscula Rank 1B.1 Chenopod scrub, playas, and valley and foothill grassland. Elevation ranges from 50 to 655 feet (15 to 200 meters). Blooms May-Oct. Unlikely. Suitable chenopod scrub and playa habitat do not occur within the Study Area. big-scale balsamroot Balsamorhiza macrolepis Rank 1B.2 Chaparral, cismontane woodland, and valley and foothill grassland. Elevation ranges from 150 to 5100 feet (45 to 1555 meters). Blooms Mar-Jun. Unlikely. Suitable chaparral and cismontane woodland habitat do not occur within the Study Area. big tarplant Blepharizonia plumosa Rank 1B.1 Dry slopes in valley and foothill grassland. Elevation ranges from 100 to 1655 feet Unlikely. Grassland habitat within the Study Area is marginal and there are no COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR (30 to 505 meters). Blooms Jul-Oct. CNDDB occurrences within 7 miles of the Study Area. Brewer's calandrinia Calandrinia breweri Rank 4.2 Chaparral and coastal scrub. Elevation ranges from 35 to 4005 feet (10 to 1220 meters). Blooms (Jan)Mar-Jun. No Potential. Suitable habitat does not occur within the Study Area. Mt. Diablo fairy-lantern Calochortus pulchellus Rank 1B.2 Chaparral, cismontane woodland, riparian woodland, and valley and foothill grassland. Elevation ranges from 100 to 2755 feet (30 to 840 meters). Blooms Apr-Jun. Unlikely. Suitable chaparral and woodland habitat do not occur within the Study Area. Oakland star-tulip Calochortus umbellatus Rank 4.2 Broad-leafed upland forest, chaparral, cismontane woodland, lower montane coniferous forest, and valley and foothill grassland. Elevation ranges from 330 to 2295 feet (100 to 700 meters). Blooms Mar-May. Unlikely. Suitable forest, chaparral, and woodland habitat do not occur within the Study Area. chaparral harebell Campanula exigua Rank 1B.2 Chaparral. Elevation ranges from 900 to 4100 feet (275 to 1250 meters). Blooms May- Jun. No Potential. Suitable chaparral habitat and elevation do not occur within the Study Area. johnny-nip Castilleja ambigua var. ambigua Rank 4.2 Coastal bluff scrub, coastal prairie, coastal scrub, marshes and swamps, valley and foothill grassland, and vernal pools. Elevation ranges from 0 to 1425 feet (0 to 435 meters). Blooms Mar-Aug. Unlikely. Suitable coastal, marsh and swamp, and vernal pool habitat do not occur within the Study Area. Congdon's tarplant Centromadia parryi ssp. congdonii Rank 1B.1 Alkaline valley and foothill grassland. Elevation ranges from 0 to 755 feet (0 to 230 meters). Blooms May- Oct(Nov). Unlikely. Suitable alkaline habitat does not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR palmate-bracted bird's-beak Chloropyron palmatum FE, SE, Rank 1B.1 Alkaline flats in chenopod scrub and valley and foothill grassland. Elevation ranges from 15 to 510 feet (5 to 155 meters). Blooms May-Oct. Unlikely. Suitable alkaline habitat does not occur within the Study Area. Santa Clara red ribbons Clarkia concinna ssp. automixa Rank 4.3 Chaparral and cismontane woodland. Elevation ranges from 295 to 4920 feet (90 to 1500 meters). Blooms (Apr) May-Jun (Jul). No Potential. Suitable habitat does not occur within the Study Area. serpentine collomia Collomia diversifolia Rank 4.3 Chaparral and cismontane woodland. Elevation ranges from 655 to 1970 feet (200 to 600 meters). Blooms May- Jun. No Potential. Suitable habitat and elevation do not occur within the Study Area. small-flowered morning-glory Convolvulus simulans Rank 4.2 Chaparral, coastal scrub, and valley and foothill grassland. Elevation ranges from 100 to 2430 feet (30 to 740 meters). Blooms Mar-Jul. Unlikely. Suitable chaparral and coastal scrub habitat do not occur within the Study Area. Mt. Diablo bird's-beak Cordylanthus nidularius SR, Rank 1B.1 Chaparral. Elevation ranges from 1970 to 2625 feet (600 to 800 meters). Blooms Jun- Aug. No Potential. Suitable habitat and elevation do not occur within the Study Area. Hoover's cryptantha Cryptantha hooveri Rank 1A Inland dunes and valley and foothill grassland. Elevation ranges from 30 to 490 feet (9 to 150 meters). Blooms Apr- May. Unlikely. Suitable inland dune habitat does not occur within the Study Area. Hospital Canyon larkspur Delphinium californicum ssp. interius Rank 1B.2 Chaparral, cismontane woodland, and coastal scrub. Elevation ranges from 640 to 3595 feet (195 to 1095 meters). Blooms Apr-Jun. No Potential. Suitable habitat and elevation do not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Lime Ridge eriastrum Eriastrum ertterae Rank 1B.1 Chaparral. Elevation ranges from 655 to 950 feet (200 to 290 meters). Blooms Jun-Jul. No Potential. Suitable habitat and elevation do not occur within the Study Area. Mt. Diablo buckwheat Eriogonum truncatum Rank 1B.1 Chaparral, coastal scrub, and valley and foothill grassland. Elevation ranges from 10 to 1150 feet (3 to 350 meters). Blooms Apr-Sep (Nov-Dec). Unlikely. Suitable chaparral and coastal scrub habitat do not occur within the Study Area. bay buckwheat Eriogonum umbellatum var. bahiiforme Rank 4.2 Cismontane woodland and lower montane coniferous forest. Elevation ranges from 2295 to 7220 feet (700 to 2200 meters). Blooms Jul- Sep. No Potential. Suitable habitat and elevation do not occur within the Study Area. Jepson's woolly sunflower Eriophyllum jepsonii Rank 4.3 Chaparral, cismontane woodland, and coastal scrub. Elevation ranges from 655 to 3365 feet (200 to 1025 meters). Blooms Apr-Jun. No Potential. Suitable habitat and elevation do not occur within the Study Area. Jepson's coyote-thistle Eryngium jepsonii Rank 1B.2 Valley and foothill grassland and vernal pools. Elevation ranges from 10 to 985 feet (3 to 300 meters). Blooms Apr- Aug. Unlikely. Suitable vernal pool habitat does not occur within the Study Area. San Joaquin spearscale Extriplex joaquinana Rank 1B.2 Chenopod scrub, meadows and seeps, playas, and valley and foothill grassland. Elevation ranges from 5 to 2740 feet (1 to 835 meters). Blooms Apr-Oct. Unlikely. Suitable chenopod scrub, meadow and seep, and playa habitat do not occur within the Study Area. stinkbells Fritillaria agrestis Rank 4.2 Chaparral, cismontane woodland, pinyon and juniper woodland, and valley and foothill grassland. Elevation ranges from 35 to 5100 feet Unlikely. Suitable chaparral and woodland habitat do not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR (10 to 1555 meters). Blooms Mar-Jun. fragrant fritillary Fritillaria liliacea Rank 1B.2 Cismontane woodland, coastal prairie, coastal scrub, and valley and foothill grassland. Elevation ranges from 10 to 1345 feet (3 to 410 meters). Blooms Feb-Apr. Unlikely. Suitable woodland and coastal habitat do not occur within the Study Area. phlox-leaf serpentine bedstraw Galium andrewsii ssp. gatense Rank 4.2 Chaparral, cismontane woodland, and lower montane coniferous forest. Elevation ranges from 490 to 4755 feet (150 to 1450 meters). Blooms Apr-Jul. No Potential. Suitable habitat and elevation do not occur within the Study Area. Toren's grimmia Grimmia torenii Rank 1B.3 Chaparral, cismontane woodland, and lower montane coniferous forest. Elevation ranges from 1065 to 3805 feet (325 to 1160 meters). No Potential. Suitable habitat and elevation do not occur within the Study Area. Diablo helianthella Helianthella castanea Rank 1B.2 Broad-leafed upland forest, chaparral, cismontane woodland, coastal scrub, riparian woodland, and valley and foothill grassland. Elevation ranges from 195 to 4265 feet (60 to 1300 meters). Blooms Mar-Jun. Unlikely. Suitable forest, chaparral, woodland, and coastal scrub habitat do not occur within the Study Area. hogwallow starfish Hesperevax caulescens Rank 4.2 Valley and foothill grassland and vernal pools. Elevation ranges from 0 to 1655 feet (0 to 505 meters). Blooms Mar- Jun. Unlikely. Suitable vernal pool habitat does not occur within the Study Area. Brewer's western flax Hesperolinon breweri Rank 1B.2 Chaparral, cismontane woodland, and valley and foothill grassland. Elevation Unlikely. Suitable chaparral and cismontane woodland COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR ranges from 100 to 3100 feet (30 to 945 meters). Blooms May-Jul. habitat do not occur within the Study Area. Loma Prieta hoita Hoita strobilina Rank 1B.1 Chaparral, cismontane woodland, and riparian woodland. Elevation ranges from 100 to 2820 feet (30 to 860 meters). Blooms May-Jul (Aug-Oct). No Potential. Suitable habitat does not occur within the Study Area. Santa Cruz tarplant Holocarpha macradenia FT, SE, Rank 1B.1 Coastal prairie, coastal scrub, and valley and foothill grassland. Elevation ranges from 35 to 720 feet (10 to 220 meters). Blooms Jun-Oct. Unlikely. Suitable coastal habitat does not occur within the Study Area. Carquinez goldenbush Isocoma arguta Rank 1B.1 Alkaline soils, flats, low hills, and valley and foothill grassland. Elevation ranges from 5 to 65 feet (1 to 20 meters). Blooms Aug-Dec. Unlikely. Suitable alkaline habitat does not occur within the Study Area. Southern California black walnut Juglans californica Rank 4.2 Chaparral, cismontane woodland, coastal scrub, and riparian woodland. Elevation ranges from 165 to 2955 feet (50 to 900 meters). Blooms Mar-Aug. No Potential. Suitable habitat does not occur within the Study Area. Contra Costa goldfields Lasthenia conjugens FE, Rank 1B.1 Cismontane woodland, playas, valley and foothill grassland, and vernal pools. Elevation ranges from 0 to 1540 feet (0 to 470 meters). Blooms Mar-Jun. Unlikely. Suitable woodland, playa, and vernal pool habitat do not occur within the Study Area. Ferris' goldfields Lasthenia ferrisiae Rank 4.2 Vernal pools. Elevation ranges from 65 to 2295 feet (20 to 700 meters). Blooms Feb-May. No Potential. Suitable habitat does not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR bristly leptosiphon Leptosiphon acicularis Rank 4.2 Chaparral, cismontane woodland, coastal prairie, and valley and foothill grassland. Elevation ranges from 180 to 4920 feet (55 to 1500 meters). Blooms Apr-Jul. Unlikely. Suitable chaparral, woodland, and coastal prairie habitat do not occur within the Study Area. serpentine leptosiphon Leptosiphon ambiguus Rank 4.2 Cismontane woodland, coastal scrub, and valley and foothill grassland. Elevation ranges from 395 to 3710 feet (120 to 1130 meters). Blooms Mar-Jun. Unlikely. Suitable woodland, and coastal scrub habitat and elevation do not occur within the Study Area. large-flowered leptosiphon Leptosiphon grandiflorus Rank 4.2 Cismontane woodland, closed-cone coniferous forest, coastal bluff scrub, coastal dunes, coastal prairie, coastal scrub, and valley and foothill grassland. Elevation ranges from 15 to 4005 feet (5 to 1220 meters). Blooms Apr- Aug. Unlikely. Suitable woodland, forest, and coastal habitat do not occur within the Study Area. showy golden madia Madia radiata Rank 1B.1 Cismontane woodland and valley and foothill grassland. Elevation ranges from 80 to 3985 feet (25 to 1215 meters). Blooms Mar-May. Unlikely. Suitable woodland habitat does not occur within the Study Area. Hall's bush-mallow Malacothamnus hallii Rank 1B.2 Chaparral and coastal scrub. Elevation ranges from 35 to 2495 feet (10 to 760 meters). Blooms (Apr) May-Sep (Oct). No Potential. Suitable habitat does not occur within the Study Area. sylvan microseris Microseris sylvatica Rank 4.2 Chaparral, cismontane woodland, great basin scrub, pinyon and juniper woodland, and valley and foothill grassland. Elevation ranges from 150 to 4920 feet (45 to Unlikely. Suitable chaparral, woodland, and great basin scrub habitat do not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR 1500 meters). Blooms Mar- Jun. woodland woollythreads Monolopia gracilens Rank 1B.2 Broad-leafed upland forest, chaparral, cismontane woodland, north coast coniferous forest, and valley and foothill grassland. Elevation ranges from 330 to 3935 feet (100 to 1200 meters). Blooms (Feb) Mar- Jul. Unlikely. Suitable forest, chaparral, and woodland habitat do not occur within the Study Area. Lime Ridge navarretia Navarretia gowenii Rank 1B.1 Chaparral. Elevation ranges from 590 to 1000 feet (180 to 305 meters). Blooms May- Jun. No Potential. Suitable habitat and elevation do not occur within the Study Area. Tehama navarretia Navarretia heterandra Rank 4.3 Valley and foothill grassland and vernal pools. Elevation ranges from 100 to 3315 feet (30 to 1010 meters). Blooms Apr-Jun. Unlikely. Suitable vernal pool habitat does not occur within the Study Area. shining navarretia Navarretia nigelliformis ssp. radians Rank 1B.2 Cismontane woodland, valley and foothill grassland, and vernal pools. Elevation ranges from 215 to 3280 feet (65 to 1000 meters). Blooms (Mar) Apr-Jul. Unlikely. Suitable cismontane woodland and vernal pool habitat do not occur within the Study Area. prostrate vernal pool navarretia Navarretia prostrata Rank 1B.2 Coastal scrub, meadows and seeps, valley and foothill grassland, and vernal pools. Elevation ranges from 10 to 3970 feet (3 to 1210 meters). Blooms Apr-Jul. Unlikely. Suitable coastal scrub, meadow and seep, and vernal pool habitat do not occur within the Study Area. Antioch Dunes evening- primrose Oenothera deltoides ssp. howellii FE, SE, Rank 1B.1 Inland dunes. Elevation ranges from 0 to 100 feet (0 to 30 meters). Blooms Mar-Sep. No Potential. Suitable inland dune habitat does not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Mt. Diablo phacelia Phacelia phacelioides Rank 1B.2 Chaparral and cismontane woodland. Elevation ranges from 1640 to 4495 feet (500 to 1370 meters). Blooms Apr- May. No Potential. Suitable habitat and elevation do not occur within the Study Area. Michael's rein orchid Piperia michaelii Rank 4.2 Chaparral, cismontane woodland, closed-cone coniferous forest, coastal bluff scrub, coastal scrub, and lower montane coniferous forest. Elevation ranges from 10 to 3000 feet (3 to 915 meters). Blooms Apr-Aug. No Potential. Suitable habitat does not occur within the Study Area. hairless popcornflower Plagiobothrys glaber Rank 1A Marshes and swamps and meadows and seeps. Elevation ranges from 50 to 590 feet (15 to 180 meters). Blooms Mar-May. No Potential. Suitable habitat does not occur within the Study Area. Oregon polemonium Polemonium carneum Rank 2B.2 Coastal prairie, coastal scrub, and lower montane coniferous forest. Elevation ranges from 0 to 6005 feet (0 to 1830 meters). Blooms Apr- Sep. No Potential. Suitable habitat does not occur within the Study Area. California alkali grass Puccinellia simplex Rank 1B.2 Chenopod scrub, meadows and seeps, valley and foothill grassland, and vernal pools. Elevation ranges from 5 to 3050 feet (2 to 930 meters). Blooms Mar-May. Unlikely. Suitable chenopod scrub, meadow and seep, and vernal pool habitat do not occur within the Study Area. Lobb's aquatic buttercup Ranunculus lobbii Rank 4.2 Cismontane woodland, north coast coniferous forest, valley and foothill grassland, and vernal pools. Elevation ranges from 50 to 1540 feet (15 to 470 meters). Blooms Feb- May. Unlikely. Suitable woodland, forest, and vernal pool habitat do not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR rock sanicle Sanicula saxatilis SR, Rank 1B.2 Broad-leafed upland forest, chaparral, and valley and foothill grassland. Elevation ranges from 2035 to 3855 feet (620 to 1175 meters). Blooms Apr-May. Unlikely. Suitable forest and chaparral habitat and elevation do not occur within the Study Area. chaparral ragwort Senecio aphanactis Rank 2B.2 Chaparral, cismontane woodland, and coastal scrub. Elevation ranges from 50 to 2625 feet (15 to 800 meters). Blooms Jan-Apr (May). No Potential. Suitable habitat does not occur within the Study Area. long-styled sand-spurrey Spergularia macrotheca var. longistyla Rank 1B.2 Marshes and swamps and meadows and seeps. Elevation ranges from 0 to 835 feet (0 to 255 meters). Blooms Feb-May. No Potential. Suitable habitat does not occur within the Study Area. most beautiful jewelflower Streptanthus albidus ssp. peramoenus Rank 1B.2 Chaparral, cismontane woodland, and valley and foothill grassland. Elevation ranges from 310 to 3280 feet (95 to 1000 meters). Blooms (Mar) Apr-Sep (Oct). Unlikely. Suitable chaparral and cismontane woodland habitat do not occur within the Study Area. Mt. Diablo jewelflower Streptanthus hispidus Rank 1B.3 Chaparral and valley and foothill grassland. Elevation ranges from 1200 to 3935 feet (365 to 1200 meters). Blooms Mar-Jun. Unlikely. Suitable chaparral habitat and elevation do not occur within the Study Area. northern slender pondweed Stuckenia filiformis ssp. alpina Rank 2B.2 Marshes and swamps. Elevation ranges from 985 to 7055 feet (300 to 2150 meters). Blooms May-Jul. No Potential. Suitable habitat and elevation do not occur within the Study Area. saline clover Trifolium hydrophilum Rank 1B.2 Marshes and swamps, valley and foothill grassland, and vernal pools. Elevation ranges from 0 to 985 feet (0 to 300 meters). Blooms Apr-Jun. Unlikely. Suitable marsh and swamp and vernal pool habitat do not occur within the Study Area COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR coastal triquetrella Triquetrella californica Rank 1B.2 Coastal bluff scrub and coastal scrub. Elevation ranges from 35 to 330 feet (10 to 100 meters). No Potential. Suitable coastal habitat does not occur within the Study Area. caper-fruited tropidocarpum Tropidocarpum capparideum Rank 1B.1 Alkaline soils in valley and foothill grassland. Elevation ranges from 5 to 1495 feet (1 to 455 meters). Blooms Mar- Apr. Unlikely. Suitable alkaline habitat does not occur within the Study Area. oval-leaved viburnum Viburnum ellipticum Rank 2B.3 Chaparral, cismontane woodland, and lower montane coniferous forest. Elevation ranges from 705 to 4595 feet (215 to 1400 meters). Blooms May-Jun. No Potential. Suitable habitat and elevation do not occur within the Study Area. MAMMALS Pallid bat Antrozous pallidus CDFW Species of Special Concern, WBWG High Priority Found in a variety of habitats ranging from grasslands to mixed forests, favoring open and dry, rocky areas. Roost sites include crevices in rock outcrops and cliffs, caves, mines, and also hollow trees and various manmade structures such as bridges, barns, and buildings (including occupied buildings). Roosts must protect bats from high temperatures. Very sensitive to disturbance of roosting sites. Moderate Potential. Suitable large trees and manmade structures for roosting occur within the Study Area. This species has been documented 0.3 miles south of the Study Area (CNDDB, 2021). COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Townsend's big-eared bat Corynorhinus townsendii CDFW Species of Special Concern, WBWG High Priority Associated with a wide variety of habitats from deserts to higher-elevation mixed and coniferous forests. Females form maternity colonies in buildings, caves and mines, and males roost singly or in small groups. Foraging typically occurs at edge habitats near wooded areas, e.g. along streams. Unlikely. The Study Area does not provide sites that could support maternity roosting. The nearest occurrence is approximately 3.5 miles northeast of the Study Area and is from 1917. Western mastiff bat Eumops perotis californicus CDFW Species of Special Concern, WBWG High Priority Found in a wide variety of open, arid and semi-arid habitats. Distribution appears to be tied to large rock structures which provide suitable roosting sites, including cliff crevices and cracks in boulders. No Potential. The Study Area does not contain suitable rock structures for roosting. Silver-haired bat Lasionycteris noctivagans WBWG Medium Priority Primarily a forest dweller, feeding over streams, ponds, and open brushy areas. Summer habitats include a variety of forest and woodland types, both coastal and montane. Roosts in hollow trees, snags, buildings, rock crevices, caves, and under bark. Unlikely. The Study Area does not contain suitable forest habitat for roosting. Hoary bat Lasiurus cinereus WBWG Medium Priority Prefers open forested habitats or habitat mosaics, with access to trees for cover and open areas or habitat edges for feeding. Roosts in dense foliage of medium to large trees. Feeds primarily on moths. Unlikely. The Study Area does not contain suitable forest habitat for roosting. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Big free-tailed bat Nyctinomops macrotis CDFW Species of Special Concern, WBWG Medium-High Priority Occurs rarely in low-lying arid areas. Requires high cliffs or rocky outcrops for roosting sites. No Potential. The Study Area does not contain high cliffs or rocky outcrops for roosting. San Francisco dusky-footed woodrat Neotoma fuscipes annectens CDFW Species of Special Concern Forest habitats of moderate canopy and moderate to dense understory. Also in chaparral habitats. Constructs nests of shredded grass, leaves, and other material. May be limited by availability of nest-building materials. Unlikely. The Study Area consists of mowed grasses and does not provide sufficient understory to support this species. Salt-marsh harvest mouse Reithrodontomys raviventris Federally Endangered, CDFW Fully Protected Endemic to emergent salt and brackish wetlands of the San Francisco Bay Estuary. Pickleweed marshes are primary habitat; also occurs in various other wetland communities with dense vegetation. Does not burrow, builds loosely organized nests. Requires higher areas for flood escape. No potential. Suitable habitat does not occur within the Study Area. Alameda Island mole Scapanus latimanus parvus CDFW Species of Special Concern Known only from Alameda Island. Found in a variety of habitats, especially annual and perennial grasslands. Prefers moist, friable soils. Avoids flooded soils. No potential. The Study Area occurs outside of the range for this species. Salt-marsh wandering shrew Sorex vagrans halicoetes CDFW Species of Special Concern Salt marshes of the south arm of San Francisco Bay. Medium high marsh 6 to 8 feet above sea level where abundant driftwood is scattered among Salicornia. No potential. The Study Area occurs outside of the range for this species. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR American badger Taxidea taxus CDFW Species of Special Concern Most abundant in drier open stages of most shrub, forest, and herbaceous habitats, with friable soils. Requires friable soils and open, uncultivated ground. Preys on burrowing rodents. No Potential. No suitably sized mammal burrows were observed within the Study Area. The Study Area is also subject to a high level of anthropogenic disturbance, and no connectivity to large areas of open space. San Joaquin kit fox Vulpes macrotis mutica Federally Endangered Annual grasslands or grassy open stages with scattered shrubby vegetation. Need loose-textured sandy soils for burrowing, and suitable prey base. No potential. The Study Area does not contain suitable habitat. BIRDS Golden eagle Aquila chrysaetos CDFW Fully Protected Occurs year-round in rolling foothills, mountain areas, sage-juniper flats, and deserts. Cliff-walled canyons provide nesting habitat in most parts of range; also nests in large trees, usually within otherwise open areas. Unlikely. Suitable nesting habitat does not occur within the Study Area. Bald eagle Haliaeetus leucocephalus Federally Delisted, CDFW Fully Protected Occurs year-round in California, but primarily a winter visitor; breeding population is growing. Nests in large trees in the vicinity of larger lakes, reservoirs and rivers. Wintering habitat somewhat more variable but usually features large concentrations of waterfowl or fish. Unlikely. Suitable nesting habitat does not occur within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Burrowing owl Athene cunicularia CDFW Species of Special Concern Year-round resident and winter visitor. Occurs in open, dry grasslands and scrub habitats with low-growing vegetation, perches and abundant mammal burrows. Preys upon insects and small vertebrates. Nests and roosts in old mammal burrows, most commonly those of ground squirrels. Unlikely. No ground squirrel burrows or surrogate burrows are present within the Study Area. Northern harrier Circus hudsonius CDFW Species of Special Concern Year-round resident and winter visitor. Found in open habitats including grasslands, prairies, marshes and agricultural areas. Nests on the ground in dense vegetation, typically near water or otherwise moist areas. Preys on small vertebrates. Unlikely. The Study Area does not contain dense ground vegetation suitable for nesting. This species may occasionally fly over the Study Area. Tricolored blackbird Agelaius tricolor CDFW Species of Special Concern Nearly endemic to California, where it is most numerous in the Central Valley and vicinity. Highly colonial, nesting in dense aggregations over or near freshwater in emergent growth or riparian thickets. Also uses flooded agricultural fields. Abundant insect prey near breeding areas essential. No potential. No emergent vegetation or riparian thickets for nesting are present within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Yellow rail Coturnicops noveboracensis CDFW Species of Special Concern Summer resident in eastern Sierra Nevada in Mono County, breeding in shallow freshwater marshes and wet meadows with dense vegetation. Also a rare winter visitor along the coast and other portions of the state. Extremely cryptic. No potential. The Study Area is outside of this species known breeding range and does contain suitable nesting habitat. White-tailed kite Elanus leucurus CDFW Fully Protected Year-round resident in coastal and valley lowlands with scattered trees and large shrubs, including grasslands, marshes and agricultural areas. Nests in trees, of which the type and setting are highly variable. Preys on small mammals and other vertebrates. Moderate potential. The Study Area contains suitable nesting trees for this species. Two sightings have been documented within 1 mile of the Study Area (eBird 2021). American peregrine falcon Falco peregrinus anatum Federally Delisted, CDFW Fully Protected Year-round resident and winter visitor. Occurs in a wide variety of habitats, though often associated with coasts, bays, marshes and other bodies of water. Nests on protected cliffs and also on man-made structures including buildings and bridges. Preys on birds, especially waterbirds. Forages widely. Unlikely. Coastal, bay, and marsh habitat are not present within the study area. The Study Area does not have cliffs or other tall structures to support nesting. This species may occasionally fly over the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Saltmarsh common yellowthroat Geothlypis trichas sinuosa CDFW Species of Special Concern Resident of the San Francisco Bay region, in fresh and salt water marshes. Requires thick, continuous cover down to water surface for foraging; tall grasses, tule patches, willows for nesting. No potential. Suitable nesting habitat does not occur within the Study Area. California black rail Laterallus jamaicensis coturniculus CDFW Fully Protected Year-round resident in marshes (saline to freshwater) with dense vegetation within four inches of the ground. Prefers larger, undisturbed marshes that have an extensive upper zone and are close to a major water source. Extremely secretive and cryptic. No Potential. Suitable nesting habitat does not occur within the Study Area. Suisun song sparrow Melospiza melodia maxillaris CDFW Species of Special Concern Year-round resident of brackish-water marshes along Suisun Bay. Inhabits cattails, tules, bulrushes and other emergent vegetation, including pickleweed. Nests typically placed in shrubs. No Potential. No brackish- water marshes are present within the Study Area. Alameda song sparrow Melospiza melodia pusillula CDFW Species of Special Concern Year-round resident of salt marshes bordering the south arm of San Francisco Bay. Inhabits primarily pickleweed marshes; nests placed in marsh vegetation, typically shrubs such as gumplant. No Potential. No salt-water marshes are present within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR California Ridgway's rail Rallus obsoletus obsoletus Federally Endangered, CDFW Fully Protected Year-round resident in tidal marshes of the San Francisco Bay estuary. Requires tidal sloughs and intertidal mud flats for foraging, and dense marsh vegetation for nesting and cover. Typical habitat features abundant growth of cordgrass and pickleweed. Feeds primarily on mollusks and crustaceans. No Potential. No tidal marshes or dense marsh vegetation for nesting occur within the Study Area. Yellow warbler Setophaga petechia CDFW Species of Special Concern Summer resident throughout much of California. Breeds in riparian vegetation close to water, including streams and wet meadows. Microhabitat used for nesting variable, but dense willow growth is typical. Occurs widely on migration. Unlikely. There is no dense willow riparian on the site required for suitable nesting habitat for this species. California least tern Sternula antillarum browni Federally Endangered, CDFW Fully Protected Summer resident along the coast from San Francisco Bay south to northern Baja California; inland breeding also very rarely occurs. Nests colonially on barren or sparsely vegetated areas with sandy or gravelly substrates near water, including beaches, islands, and gravel bars. In San Francisco Bay, has also nested on salt pond margins. No potential. No sandy or gravelly substrates for nesting are present within the Study Area. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Black skimmer Rynchops niger CDFW Species of Special Concern Found primarily in southern California; South San Francisco Bay has a small resident population. Nests colonially on gravel bars, low islets, and sandy beaches No potential. The Study Area is outside of this species known range and does contain suitable nesting habitat. REPTILES AND AMPHIBIANS Western pond turtle Emys marmorata CDFW Species of Special Concern A thoroughly aquatic turtle of ponds, marshes, rivers, streams and irrigation ditches with aquatic vegetation. Require basking sites such as partially submerged logs, vegetation mats, or open mud banks, and suitable upland habitat (sandy banks or grassy open fields) for egg-laying. Unlikely. Aquatic habitat within the Study Area lacks features that would support this species, such as suitable basking sites and aquatic vegetation. Upland habitat is mowed and highly disturbed. This species was documented in a cattle pond 3.5 miles northeast of the Study Area, but there are no pond features present within the study area or in the near vicinity (CNDDB 2021). Alameda whipsnake Masticophis lateralis euryxanthus Federally Threatened Inhabits chaparral and foothill-hardwood habitats in the eastern Bay Area. Prefers south-facing slopes and ravines with rock outcroppings where shrubs form a vegetative mosaic with oak trees and grasses and small mammal burrows provide basking and refuge. No potential. No suitable chaparral or scrub habitat is present within the Study Area COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Coast horned lizard Phrynosoma blainvillii CDFW Species of Special Concern Frequents a wide variety of habitats, most common in lowlands along sandy washes with scattered low bushes. Prefers friable, rocky, or shallow sandy soils for burial; open areas for sunning; bushes for cover; and an abundant supply of ants and other insects. No Potential. No friable, rocky, or shallow sandy soils are present within the Study Area. California tiger salamander - central California DPS Ambystoma californiense pop. 1 Federally Threatened Populations in Santa Barbara and Sonoma counties currently listed as endangered; threatened in remainder of range. Inhabits grassland, oak woodland, ruderal and seasonal pool habitats. Adults are fossorial and utilize mammal burrows and other subterranean refugia. Breeding occurs primarily in vernal pools and other seasonal water features. Unlikely. One adult was observed in a seasonal breeding pond 1.6 miles northwest of the Study Area in 2018 (CNDDB 2021). However, several roads, large commercial and residential developments separate the Study Area from the nearest documented breeding population. Therefore, given the disturbed state of the site and barriers to dispersal, movement into the Study Area is unlikely. Foothill yellow-legged frog Rana boylii CDFW Species of Special Concern Found in or adjacent to rocky streams in a variety of habitats. Prefers partly- shaded, shallow streams and riffles with a rocky substrate; requires at least some cobble- sized substrate for egg-laying. Needs at least 15 weeks to attain metamorphosis. Feeds on both aquatic and terrestrial invertebrates. Unlikely. Streams that occur within the Study Area do not provide rocky substrate suitable for egg-laying. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR California red-legged frog Rana draytonii Federally Threatened, CDFW Species of Special Concern Lowlands and foothills in or near permanent sources of deep water with dense, shrubby or emergent riparian vegetation. Requires 11 to 20 weeks of permanent water for larval development. Associated with quiet perennial to intermittent ponds, stream pools and wetlands. Prefers shorelines with extensive vegetation. Disperses through upland habitats after rains. Unlikely. No suitable aquatic breeding habitat is present within the Study Area. A breeding site has been documented approximately 2 miles east of the Study Area in an ephemeral stream (CNDDB, 2021). However, Highway 680 and several residential and commercial developments separate the Study Area and this occurrence. Therefore, given the lack of suitable aquatic habitat in the Study Area and the barrier to dispersal, dispersal into the Study Area is unlikely. FISH Sacramento perch Archoplites interruptus CDFW Species of Special Concern (Only within native range) Historically found in the sloughs, slow-moving rivers, and lakes of the Central Valley. Prefer warm water. Aquatic vegetation is essential for young. Tolerate wide range of physio-chemical water conditions. No Potential. The Study Area does not contain suitable aquatic habitat for this species. Tidewater goby Eucyclogobius newberryi Federally Endangered Brackish water habitats along the California coast from Agua Hedionda Lagoon, San Diego County to the mouth of the Smith River. Found in shallow lagoons and lower stream reaches; requires fairly still but not stagnant water and high oxygen levels. No Potential. The Study Area does not contain suitable aquatic habitat for this species. COMMON NAME SCIENTIFIC NAME STATUS HABITAT POTENTIAL TO OCCUR Longfin smelt Spirinchus thaleichthys Federal Candidate Euryhaline, nektonic and anadromous. Found in open waters of estuaries, mostly in middle or bottom of water column. Prefer salinities of 15 to 30 ppt, but can be found in completely freshwater to almost pure seawater. No Potential. The Study Area does not contain any open water habitat. INVERTEBRATES Bay checkerspot butterfly Euphydryas editha bayensis Federally Threatened Restricted to native grasslands on outcrops of serpentine soil in the vicinity of San Francisco Bay. Plantago erecta is the primary host plant; Orthocarpus densiflorus and O. purpurscens are the secondary host plants. No Potential. The Study Area does not contain serpentine soils to support this species. APPENDIX D – SITE PHOTOGRAPHS THIS PAGE INTENTIONALLY LEFT BLANK. Appendix D. Site Photographs 1 Southern ephemeral stream (E). Concrete apron/open water at northern end of intermittent drainage Western ephemeral stream (N). Seasonal wetland in intermittent drainage Appendix D. Site Photographs 2 Non-native annual grassland and valley oak riparian forest and woodland within the Study Area (S). Concrete apron/Open water at southwestern corner of the northern parcel (W). Non-native annual grassland within the Study Area (W). Ephemeral Stream and intermittent drainage (NE). APPENDIX E – PRELIMINARY JURISDICTIONAL DETERMINATION (FILE NO. SPN-2016-00149S) THIS PAGE INTENTIONALLY LEFT BLANK. DEPARTMENT OF THE ARMY SAN FRANCISCO DISTRICT, U.S. ARMY CORPS OF ENGINEERS 450 GOLDEN GATE AVENUE SAN FRANCISCO, CALIFORNIA 94102 November 22, 2021 Regulatory Division Subject: File No. SPN-2016-00149S Mr. Jeff Stone GMMR, LLC 230 Piedmont Lane Danville, California 94526 jbstone@diamondconstructioninc.com Dear Mr. Stone: This correspondence is in reference to your submittal of September 10, 2021, requesting a preliminary jurisdictional determination of the extent of navigable waters of the United States and waters of the United States occurring on an approximately 1.9-acre site located at 375 West El Pintado Road (APNs 200-140-011 and 200-140-012), in the City of Danville, Contra Costa County, California (Latitude: 37.828347º, Longitude: -122.000906°). All proposed discharges of dredged or fill material occurring below the plane of ordinary high water in non-tidal waters of the United States; or below the high tide line in tidal waters of the United States; and within the lateral extent of wetlands adjacent to these waters, typically require Department of the Army authorization and the issuance of a permit under Section 404 of the Clean Water Act of 1972, as amended, 33 U.S.C. § 1344 et seq. Waters of the United States generally include the territorial seas; all traditional navigable waters which are currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including waters subject to the ebb and flow of the tide; wetlands adjacent to traditional navigable waters; non-navigable tributaries of traditional navigable waters that are relatively permanent, where the tributaries typically flow year-round or have continuous flow at least seasonally; and wetlands directly abutting such tributaries. Where a case-specific analysis determines the existence of a "significant nexus" effect with a traditional navigable water, waters of the United States may also include non-navigable tributaries that are not relatively permanent; wetlands adjacent to non-navigable tributaries that are not relatively permanent; wetlands adjacent to but not directly abutting a relatively permanent non-navigable tributary; and certain ephemeral streams in the arid West. The enclosed delineation map titled “SPN-2016-00149S, El Pintado Residential Development,” in one (1) sheet and date certified November 22, 2021 (Enclosure 1), depicts the extent and location of wetlands, and other waters of the United States, within the boundary area of the site that may be subject to U.S. Army Corps of Engineers' regulatory authority under Section 404 of the Clean Water Act. This preliminary jurisdictional determination is based on the current conditions of the site, as verified during a field investigation of November 2, 2021, a -2- review of available digital photographic imagery, and a review of other data included in your submittal. While this preliminary jurisdictional determination was conducted pursuant to Regulatory Guidance Letter No. 16-01, Jurisdictional Determinations, it may be subject to future revision if new information or a change in field conditions becomes subsequently apparent. The basis for this preliminary jurisdictional determination is fully explained in the enclosed Preliminary Jurisdictional Determination Form (Enclosure 2). You are requested to sign and date this form and return it to this office within two weeks of receipt. You are advised that the preliminary jurisdictional determination may not be appealed through the U.S. Army Corps of Engineers' Administrative Appeal Process, as described in 33 C.F.R. pt. 331 (65 Fed. Reg. 16,486; Mar. 28, 2000). Under the provisions of 33 C.F.R Section 331.5(b)(9), non-appealable actions include preliminary jurisdictional determinations since they are considered to be only advisory in nature and make no definitive conclusions on the jurisdictional status of the water bodies in question. However, you may request this office to provide an approved jurisdictional determination that precisely identifies the scope of jurisdictional waters on the site; an approved jurisdictional determination may be appealed through the Administrative Appeal Process. If you anticipate requesting an approved jurisdictional determination at some future date, you are advised not to engage in any on-site grading or other construction activity in the interim to avoid potential violations and penalties under Section 404 of the Clean Water Act. Finally, you may provide this office new information for further consideration and request a reevaluation of this preliminary jurisdictional determination. You may refer any questions on this matter to Jenna Rais of the Regulatory staff by telephone at 415-503-6808 or by e-mail at Jenna.S.Rais@usace.army.mil. All correspondence should be addressed to the Regulatory Division, South Branch, referencing the file number at the head of this letter. -3- The San Francisco District is committed to improving service to our customers. The Regulatory staff seeks to achieve the goals of the Regulatory Program in an efficient and cooperative manner while preserving and protecting our nation's aquatic resources. If you would like to provide comments on our Regulatory Program, please complete the Customer Service Survey Form available on our website: http://www.spn.usace.army.mil/Missions/Regulatory.aspx. Sincerely, Frances Malamud-Roam Acting South Branch Chief Regulatory Division Enclosures Electronic Copies Furnished (w/ encls): WRA, Inc., San Rafael, CA (Attn: Amy May, Amy.May@wra-ca.com; Attn: Hope Kingma, Hope.Kingma@wra-ca.com) SF Bay RWQCB, Oakland, CA (Attn: rb2-401Application@waterboards.ca.gov; Attn: Katie Hart, Kathryn.Hart@waterboards.ca.gov) !( !(!( !( W i n f i e l d L n W i n f i e l d L n W E lPinta d o E l s i e D r W E l P in t a d o W E l P i n ta d o ES 2 ES 1 IS 2 IS 1 U 2 U 1W1 W 2 37.828674, -122.001541 37.827856, -122.000094 Pa t h : L : \ A c a d 2 0 0 0 F i l e s \ 3 1 0 0 0 \ 3 1 1 3 7 \ G I S \ A r c M a p \ D e l i n 2 0 2 1 0 8 1 1 \ D e l i n 2 0 2 1 0 8 1 1 . a p r x Study Area (1.9 ac.) !(Sample Point Culvert Top of Bank Potential Waters of the United States and State Intermittent Stream with an In-Stream Seasonal Wetland (0.03 ac., 221 ln. ft) (Drainage B) Concrete Aprons/Open Water - (Non-vegetated Waters) (0.01 ac.) Ephemeral Stream -1' wide (.007 ac., 307 ln. ft.) (Drainages A and C) ES-1 and ES-2 GMMR, LLC Danville Development Danville, California Sources: ESRI World Imagery, WRA | Prepared By: czumwalt, 11/9/2021 0 10050 Feet Figure 3. Jurisdictional Features Located within the Study Area ± ID Type Acres Linear Feet IS-1 Intermittent Stream 0.001353 10 IS-2 Intermittent Stream 0.025188 211 ES-1 Ephemeral Stream 0.029115 135 ES-2 Ephemeral Stream 0.024827 172 Waters of the U.S. and State Appendix B Traffic Impact Analysis MITIGATION MONITORING AND REPORTING PROGRAM 375 West El Pintado Road Senior Housing Project Town of Danville Development Services Department March 2022 ATTACHMENT D PREFACE Section 21081 of the California Environmental Quality Act (CEQA) requires a Lead Agency to adopt a Mitigation Monitoring and Reporting Program whenever it approves a project for which measures have been required to mitigate or avoid significant effects on the environment. The purpose of the monitoring and reporting program is to ensure compliance with the mitigation measures during project implementation. The Addendum to the 375 West El Pintado Road Residential Project 2018 Environmental Impact Report (EIR) (Addendum to 2018 EIR) for the 375 West El Pintado Road Senior Housing Project (Modified Project) concluded that the implementation of the project could result in significant effects on the environment and mitigation measures were incorporated into the Modified Project or are required as a condition of project approval. This Mitigation Monitoring and Reporting Program addresses those measures in terms of how and when they will be implemented. This document does not discuss those subjects for which the Addendum to 2018 EIR concluded that the impacts from implementation of the Modified Project would be less than significant and for which no standard or mitigation measures would be required. 375 West El Pintado Road Senior Housing Project 1 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) BIO a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? BIO-1 Nesting Bird Protection Measure If Modified Project activities must be conducted during the nesting season (March 1 and September 1), a pre-construction nesting bird survey will be conducted by a qualified biologist no more than 14 days prior to vegetation removal or initial ground disturbance. The survey will include the project site and surrounding vicinity to identify the location and status of any nests that could potentially be affected either directly or indirectly by Project activities. If active nests of native nesting bird species are located during the nesting bird survey, a work exclusion zone will be established around each nest by the qualified biologist. Established exclusion zones will remain in place until all young in the nest have fledged or the nest otherwise becomes inactive (e.g., due to predation). Appropriate exclusion zone sizes will be determined by a qualified biologist and will vary based on species, nest location, existing visual buffers, noise levels, and other factors. An exclusion zone radius may be as small as 50 feet for common, disturbance-adapted species, or as large as 250 feet or more for raptors. Exclusion zone size will be reduced from established levels by a qualified biologist if nest monitoring findings indicate that Project activities do not adversely impact the nest, and if a reduced exclusion zone would not adversely affect the nest. The measure shall be implemented by the contractors during nesting bird season from March 1 to September 1. Conduct pre-construction nesting bird surveys no more than 14 days prior to vegetation removal or initial ground disturbance during nesting bird season. Establish and maintain a work exclusion zone around active nest. The Town of Danville (Town) is responsible for incorporating this measure into contract specifications and for ensuring compliance during construction. BIO-2 Roosting Bats Protection Measure To avoid impacts to roosting bats, tree removal and building demolition should occur between October 1 and March 31, outside of the maternity roosting season (when female bats may have dependent young). If tree removal or building demolition must occur between April 1 and September 30, a bat roost habitat assessment should be conducted by a qualified biologist. The bat roost habitat assessment would determine the likelihood of the Project site supporting roosting bats. If the assessment identifies suitable or potentially occupied roosts within the Project site, a pre-construction bat survey should be performed no more than 14 days prior to tree or building removal using site appropriate survey methods to determine if potential roost structures are occupied. If special-status bat species are detected during these surveys, appropriate, species and roost-specific mitigation measures will be implemented. Such measures may include postponing the removal of the trees or building until the end of the maternity roosting season, exclusionary work buffers, or consultation with CDFW. The measure shall be implemented by the contractors roosting season from April 1 to September 30 and non-roosting season from October 1 to March 31. Tree removal and building demolition should occur during non-roosting season. Conduct a bat roost habitat assessment if tree removal and building demolition must occur during roosting season. Conduct pre-construction survey no more than 14 days prior to tree and building removal. Implement species and roost-specific mitigation measures. The Town is responsible for incorporating this measure into contract specifications and for ensuring compliance during construction. 375 West El Pintado Road Senior Housing Project 2 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) BIO b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, or regulations or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? BIO-3 Section 404 Permit The Modified Project will obtain a Section 404 Permit from the Corps and a Section 401 Water Quality Certification from the RWQCB prior to any impacts to waters of the U.S. and State. The Project will prepare a Habitat Mitigation and Monitoring Plan (MMP) to satisfy the requirements of the Corps and RWQCB permits to achieve no net-loss of wetlands. To mitigate for impacts to sensitive and natural communities, the applicant proposes to construct a 285-linear feet main channel and a 160-liner feet meandering tributary channel; the total low flow flat channel bottom area will be 6,960 square feet (0.16 acre) that is designed to develop into wetlands. The total mitigation area below top-of-bank will be 10,280 square feet (0.24 acre). This will provide 1:1 replacement for the total linear feet impacts and 4:1 replacement for the impacted acreage of channels. The total area below top-of-bank will be replaced at a 2:1 mitigation ratio. The measure shall be implemented prior to any impacts to waters of the U.S. and State and during construction. Obtain a Section 404 permit and prepare a Habitat MMP prior to impacts to waters of the U.S. and State. Construct 440 linear feet of channel during construction. The Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to and during construction. BIO-4 Lake and Streambed Alteration Agreement The Modified Project will obtain a Lake and Streambed Alteration Agreement from the CDFW to proceed with proposed impacts to CDFW jurisdictional riparian habitat. All compliance measures included in the permit will be adhered to. The measure shall be implemented prior to any impacts to waters of the State. Obtain a Lake and Streambed Alteration Agreement prior to impacts to waters of the State. Implement compliance measures identified in the permit. The Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to and during construction. BIO-5 Riparian Vegetation Mitigation The Modified Project will replant valley oak and willow trees at a mitigation ratio of 2:1 to offset the removal of valley oak and willow trees from the riparian sensitive natural community. A replanting plan and a MMP will be submitted to CDFW prior to implementation. The measure shall be implemented during or after construction. Replant valley oak and willow trees and prepare an MMP. The Town is responsible for incorporating this measure into contract specifications and for ensuring compliance during or after construction. BIO c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? Mitigation Measure BIO-3 to BIO-5 (See above) See above See above See above 375 West El Pintado Road Senior Housing Project 3 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) BIO e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? 2018 EIR Mitigation Measure BIO-5 Tree Replacement The applicant shall comply with Town requirements (DMC Section 32-79), as applicable, to plant on-site or off-site replacement trees for removed protected trees which are of a cumulative diameter necessary to equal the diameter of trees approved for removal as determined by the Town’s Planning Division. For the non-Town protected trees that would be removed as part of the project, the applicant shall plant new minimum 15-gallon trees either on-site or off-site, as determined by the Town, at a 1:1 ratio. The exact locations and tree species shall be subject to review and approval by the Town’s Planning Division The measure shall be implemented during or after construction. Plant on-stie or off-site replacement trees for removed protected trees. The Town is responsible for incorporating this measure into contract specifications and for ensuring compliance during or after construction. 2018 EIR Mitigation Measure BIO-6 Tree Protection The following measures shall be implemented prior to the start of construction for all trees not designated for removal. • Trees to be retained on-site shall be temporarily fenced with chain- link or other substantial, highly visible material while all grading and construction activities occur, including landscaping activities that require substantial ground disturbance (more than the use of hand tools). The fencing shall be five feet from the dripline of the canopy, at least six-feet high, staked to prevent collapse, and shall contain signs identifying the protection area. • When construction activities occur within five feet of the dripline, a certified arborist shall be on site to monitor and make recommendations. • All roots shall be cut cleanly, if possible, back to a lateral branching root. Cuts should be made at right angles to the roots. • If canopy trimming is needed it shall be done under the supervision of an International Society of Arboriculture (ISA) Certified Arborist and by an ISA Certified Tree Worker. Trees shall be pruned according to American National Standards Institute (ANSI) 300 standards. ANSI 300 provides guidelines for pruning trees and other woody plants. The measure shall be implemented prior to construction. Install temporarily fence to protect on-site trees. Monitor construction by a certified arborist if activities occur within five feet of dripline. Cut roots cleanly. Monitor canopy trimming by an ISA Certified Tree Worker. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to construction. CUL b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064.5? 2018 EIR Mitigation Measure CR-1 Cultural Resources Awareness Training. Prior to the commencement of ground disturbance, including site preparation and grading activities, the applicant will ensure that all construction workers are trained to recognize archaeological resources (e.g., obsidian and chert flakes and chipped stone tools; grinding and mashing implements such as slabs and handstones, and mortars and pestles; bedrock outcrops and boulders with mortar cups; and locally The measure shall be implemented prior to and during construction. Provide cultural resources awareness training to construction workers prior to ground disturbance activities. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to and during construction. 375 West El Pintado Road Senior Housing Project 4 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) darkened midden soils containing some of the previously listed items plus fragments of bone, shellfish, and fire affected stones; fragments of glass, ceramic, and metal objects; milled and split lumber; and structure and feature remains such as building foundations and discrete trash deposits). The cultural resources awareness training shall be conducted by a qualified professional archaeologist with experience in training non- specialists. A record of completion of cultural resources awareness training for all construction workers shall be submitted to the Town of Danville prior to the issuance of a grading permit, and a copy of the training completion record shall be maintained on-site for the duration of construction activities. 2018 EIR Mitigation Measure CR-2 Unanticipated Discovery of Cultural Remains. If previously unidentified cultural resources are encountered during construction or land disturbance activities, work shall stop within 50 feet of the find and the Town of Danville shall be notified at once to assess the nature, extent, and potential significance of any cultural resource find. The applicant shall retain a qualified archaeologist to implement a Phase II subsurface testing program to determine the resource boundaries, assess the integrity of the resource, and evaluate the resource’s significance through a study of its features and artifacts. If the resource is determined significant, the Town of Danville may choose to allow the capping of the area containing the resource using culturally sterile and chemically neutral fill material. If such capping occurs, then a qualified archaeologist shall be retained to monitor the placement of fill upon the resource. If a significant resource will not be capped, the results and recommendations of the Phase II study shall determine the need for a Phase III data recovery program designed to record and remove significant cultural materials that could otherwise be tampered with. If the resource is determined to be not significant, no capping and/ or further archaeological investigation or mitigation shall be required. The results and recommendations of the Phase II study shall determine the need for construction monitoring. If monitoring is warranted, a qualified archaeologist shall be retained by the applicant to be present during all earth moving activities that have the potential to affect archaeological or historical resources. A monitoring report shall be submitted to the Town upon completion of construction The measure shall be implemented during construction. Stop work if previously unidentified cultural resources are encountered. Notify the Town regarding the discovery. Monitor the placement of fill upon the discovered significant resource if capping of the area is to occur. Implement future invitation of the discovered significant resource if capping of the area will not occur. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance during construction. CUL c) Disturb any human remains, including those interred outside of dedicated cemeteries? 2018 EIR Mitigation Measure CR-3 Unanticipated Discovery of Human Remains. If previously unidentified human remains are encountered during project construction, State Health and Safety Code Section 7050.5 shall be The measure shall be implemented during construction. Adhere to State Health and Safety Code Section 7050.5 if previously Town is responsible for incorporating this measure into contract specifications and for 375 West El Pintado Road Senior Housing Project 5 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) adhered to, which requires that no further disturbance shall occur until the County Coroner has made the necessary findings as to origin and disposition pursuant to Public Resources Code Section 5097.98. If the remains are determined to be of Native American descent, the Coroner has 24 hours to notify the NAHC. The NAHC would then identify the person(s) thought to be the Most Likely Descendent (MLD) of the deceased Native American, who would then help determine what course of action should be taken in dealing with the remains. unidentified human remains are encountered. Notify the NAHC if the County Coroner determines the remains are of Native American descent. ensuring compliance during construction. GEO c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse? 2018 EIR Mitigation Measure GEO-1 Design-Level Geotechnical Investigation. In accordance with the recommendations of the preliminary geotechnical investigation, the applicant shall conduct a design-level geotechnical investigation. The design-level geotechnical investigation shall include additional field exploration and laboratory testing. Soil borings and/or cone penetration tests (CPT) soundings shall be conducted to evaluate the potential for liquefaction in the area of the preliminary geotechnical investigation Boring 2. The recommendations of the design-level geotechnical investigation shall be incorporated into the proposed project grading and building plans after review and approval by the Town’s Building Services Division. These recommendations may include the removal of expansive soils, replacing expansive soils with non-expansive engineered fill, deepening foundations to develop support below the zone of significant seasonal moisture change, designing foundation/slab systems to resist uplift pressures generated by swelling soils, providing drainage and landscaping to minimize seasonal moisture fluctuations in the near-surface soils, compacting soils to the appropriate relative compaction, and designing foundations to resist the adverse effects of liquefaction and corrosive soils. The measure shall be implemented prior to and during construction. Conduct design-level geotechnical investigation prior to construction. Incorporate the recommendations of the design-level geotechnical investigation prior to and during construciton. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to and during construction. GEO d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code, creating substantial direct or indirect risks to life or property? 2018 EIR Mitigation Measure GEO-1 (see above) See above See above See above GEO f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? 2018 EIR Mitigation Measure CR-1, CR-2, and CR-3 (see above) See above See above See above NOI a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? 2018 EIR Mitigation Measure N-2 Construction-Related Noise Reduction Measures. The applicant shall apply the following measures during construction of the project: • Construction Staging. The contractor shall provide staging areas on- site to minimize off-site transportation of heavy construction The measure shall be implemented prior to and during construction. Provide on-site stating. Maintain construction equipment and muffler consistent with manufacturers’ standards. Use electrical power tools. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance 375 West El Pintado Road Senior Housing Project 6 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) equipment. These areas shall be located to maximize the distance between activity and sensitive receptors. This would reduce noise levels associated with most types of idling construction equipment. • Mufflers. Construction equipment shall be properly maintained and all internal combustion engine driven machinery with intake and exhaust mufflers and engine shrouds, as applicable, shall be in good condition and appropriate for the equipment. During construction, all equipment, fixed or mobile, shall be operated with closed engine doors and shall be equipped with properly operating and maintained mufflers, consistent with manufacturers’ standards. • Electrical Power. Electrical power, rather than diesel equipment, shall be used to run compressors and similar power tools and to power any temporary structures, such as construction trailers or caretaker facilities. • Equipment Staging. All stationary equipment shall be staged as far away from the adjacent multifamily residential development as feasible. • Equipment Idling. Construction vehicles and equipment shall not be left idling for longer than five minutes when not in use. • Workers’ Radios. All noise from workers’ radios shall be controlled to a point that they are not audible at sensitive receptors near construction activity. • Smart Back-up Alarms. Mobile construction equipment shall have smart back-up alarms that automatically adjust the sound level of the alarm in response to ambient noise levels. Alternatively, back- up alarms shall be disabled and replaced with human spotters to ensure safety when mobile construction equipment is moving in the reverse direction. • Disturbance Coordinator. The applicant shall designate a disturbance coordinator who shall be responsible for responding to any local complaints about construction noise. The noise disturbance coordinator shall determine the cause of the noise complaint (e.g., starting too early, bad muffler, etc.) and shall require that reasonable measures warranted to correct the problem be implemented. A telephone number for the disturbance coordinator shall be conspicuously posted at the construction site. • Construction Notice. Two weeks prior to the commencement of construction and grading at the project site, the applicant shall install a 3-foot by 3-foot sign at the project entry that discloses the allowable construction work days and hours, the planned Stage equipment as far aways from the adjacent residences as feasible. Do not idle construction vehicles longer than five minutes when not in use. Control noise from workers’ radios. Use smart back-up alarms for mobile construction equipment. Designate a disturbance coordinator to respond to any local complaints. Install sign at the site entry two weeks prior to construction to notify the public regarding construction schedule and contact information. prior to and during construction. 375 West El Pintado Road Senior Housing Project 7 Mitigation Monitoring and Reporting Program Town of Danville March 2022 MITIGATION MONITORING AND REPORTING PROGRAM POPLAR AT GOLF COURSE TRASH CAPTURE PROJECT Impact Mitigation Timeframe for Implementation Method for Compliance Oversight of Implementation Monitored By Verified By (Date and Signature) construction schedule, and the contact name and phone number for residents to call for construction noise related complaints. All reasonable concerns shall be rectified within 24 hours of receipt. TRANS a) Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? 2018 EIR Mitigation Measure T-1 Construction Mitigation Plan. The project applicant shall develop and submit for approval to the Town of Danville a Construction Management and Mitigation Plan that includes designated haul routes and staging areas, traffic control procedures, emergency access provisions and construction crew parking, to minimize traffic impacts during construction. The plan shall ensure that haul routes and construction activity timing shall comply with the Town of Danville’s requirements. The plan shall also ensure that construction period employees can either park on-site or at an off-site location. In addition, the plan shall require that temporary signage, alternative pedestrian passage, and/or protected walkways be provided should sidewalks be closed during construction. The measure shall be implemented prior to and during construction. Prepare a Construction Management and Mitigation Plan prior to construction. Implement the Construction Management and Mitigation Plan during construction. Town is responsible for incorporating this measure into contract specifications and for ensuring compliance prior to and during construction. TCR a) Cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is: i) and ii) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section 5020.1(k)? A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code section 5024.1? In applying the criteria set forth in subdivision (c) of Public Resources Code section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe. 2018 EIR Mitigation Measure CR-1, CR-2, and CR-3 (see above) See above See above See above ATTACHMENT E 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m PLANNING SUBMITTAL 06/28/2022 PR O J E C T N U M B E R _ P R O J E C T N A M E _ I S S U A N C E _ D A T E 375 W El Pintado Road, Danville, CA 94526 El Pintado Residences ATTACHMENT F © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 1 4 : 4 7 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 G-001 TITLE SHEET El Pintado Residences GMMR, LLC 22.019.00 PROJECT INFO PL A N N I N G S U B M I T T A L 0 6 / 2 8 / 2 2 01 - GENERAL G-000 COVER SHEET X G-001 TITLE SHEET X G-400 RENDERING X 02 - CIVIL TM-1 VESTING TENTATIVE MAP X TM-2 TYPICAL SECTIONS X TM-3 EXISTING CONDITIONS/ TREE REMOVAL PLAN X TM-4 TREE INVENTORY X TM-5 PRELIMINARY SITE PLAN X TM-6 GRADING AND DRAINAGE PLAN X TM-7 UTILITY PLAN X TM-8 STORM WATER CONTROL PLAN X 04 - ARCHITECTURAL A-101 FLOOR PLAN - LEVEL 1 X A-102 FLOOR PLAN - LEVEL 2 X A-103 FLOOR PLAN - LEVEL 3 X A-104 ROOF PLAN X A-300 BUILDING ELEVATIONS X A-301 BUILDING ELEVATIONS X A-302 BUILDING SECTIONS X A-311 3D VIEWS X A-502 ENLARGED PLANS - SOUTH X A-503 ENLARGED PLANS - EAST X A-504 ENLARGED PLANS - WEST X 05 - LANDSCAPE L0.0 COVER SHEET X L0.1 GENERAL NOTES, LEGENDS, & SCHEDULES X L0.2 PLANTING NOTES & PLANTING MATERIAL KEY X L1.1 LAYOUT/LIGHT PLAN (GROUND LEVEL) X L1.2 LAYOUT/LIGHT PLAN (GROUND LEVEL) X L1.3 LAYOUT/LIGHT PLAN (GROUND LEVEL) X L1.4 LAYOUT/LIGHT PLAN (3RD LEVEL ROOF) X L1.5 LAYOUT/LIGHT PLAN (3RD LEVEL ROOF) X L2.1 PLANTING PLAN (GROUND LEVEL)X L2.2 PLANTING PLAN (GROUND LEVEL)X L2.3 PLANTING PLAN (GROUND LEVEL)X L2.4 PLANTING PLAN (3RD LEVEL ROOF) X L2.5 PLANTING PLAN (3RD LEVEL ROOF) X L3.1 DESIGN DEVELOPMENT DETAILS/ IMAGERY X ZONING INFO DRAWING SHEET INDEX PROJECT DIRECTORYVICINITY MAP CLIENT GMMR, LLC 230 PIEDMONT LANE DANVILLE, CA. 94526 GLEN NOVOTNY ARCHITECT FORM4 ARCHITECTURE 120 SECOND ST. 2ND FLOOR SAN FRANCISCO, CA. 94105 PHIL HYNDMAN -PROJECT MANAGER PHYNDMAN@FORM4INC.COM T (415) 887-8244 CONTRACTOR DIAMOND CONSTRUCTION PO BOX 477 LAFAYETTE, CA. 94549 JEFFREY STONE JBSTONE@DIAMONDCONSTRUCTIONINC.COM STRUCTURAL ENGINEER TBD TBD MEP ENGINEER TBD TBD CIVIL ENGINEER TALUS INC 811 SAN RAMON VALLEY BLVD 321 DANVILLE, CA. 94526 EASTON MCALLISTER EASTON@TALUSINC.NET T (415) 984-0440 LANDSCAPE ARCHITECT ENVIRONMENTAL FORESIGHT 1700 N BROADWAY ROAD, SUITE 401 WALNUT CREEK, CA. 94596 SCOTT FEUER -PRINCIPAL SFEUER@ENVIRONMENTALFORESIGHT.COM T (925) 852-9419 GEOTECHNICAL ENGINEER PETERS & ROSS 114 HOPECO ROAD PLEASANT HILL, CA. 94523 PETER MUNDAY -PE, GE PETERSROSS@AOL.COM T (925) 942-3629 ACOUSTIC ENGINEER SALTER ACOUSTICS 130 SUTTER ST, FLR 5 SAN FRANCISCO, CA. 94104 ERIN LOPEZ ELOPEZ@SALTER-INC.COM T (415) 470-6464 APPLICABLE CODES AND AGENCIES DEFERRED SUBMITTALS THE INTENT OF THE DRAWINGS AND SPECIFICATIONS IS TO CONSTRUCT REFERENCED PROJECT IN ACCORDANCE WITH CALIFORNIA CODE OF REGULATIONS TITLE 24. SHOULD ANY CONDITION DEVELOP NOT COVERED BY THE CONTRACT DOCUMENTS WHEREIN THE FINISHED WORK WILL NOT COMPLY WITH SAID CALIFORNIA CODE OF REGULATIONS TITLE 24, A CHANGE ORDER DETAILING AND SPECIFYING THE REQUIRED WORK SHALL BE SUBMITTED TO AND APPROVED BY THE AGENCY HAVING JURISDICTION BEFORE PROCEEDING WITH THE WORK. PARTIAL LIST OF APPLICABLE CODES AS JANUARY 1, 2020 2019 BUILDING STANDARDS ADMINISTRATION CODE, PART 1, TITLE 24 CCR 2019 CALIFORNIA BUILDING CODE (CBC), PART 2, TITLE 24 CCR 2019 CALIFORNIA ELECTRICAL CODE (CEC), part 3, TITLE 24 CCR 2019 CALIFORNIA MECHANICAL CODE (CMC), PART 4, TITLE 24 CCR 2019 CALIFORNIA PLUMBING CODE (CPC), PART 5, TITLE 24 CCR 2019 CALIFORNIA ENERGY CODE, PART 6, TITLE 24 CCR 2019 CALIFORNIA FIRE CODE, PART 9, TITLE 24 CCR 2010 ADA STANDARDS FOR ACCESSIBLE DESIGN 2019 CITY OF DANVILLE MUNICIPAL CODE ADDRESS: 375 W. EL PINTADO, DANVILLE, CA 94526 ASSESSORS PARCEL NUMBER:200-140-011, 200-140-012 TOTAL LOT AREA:82,644 SQ. FT. OR 1.9 ACRES ZONING DISTRICT: P-1 PLANNED UNIT DEVELOPMENT CONSTRUCTION TYPE:V-A OCCUPANCY TYPE:R-2 GROSS AREA:L1 11,414 GSF L2 37,423 GSF L3 29,137 GSF TOTAL 77,974 GSF (GROSS) PRIVATE OPEN SPACE:L1 334 SF L2 2,177 SF L3 11,458 SF TOTAL 13,969 SF HEIGHT LIMIT:LIMIT PER P-1 NEGOTIATIONS = 35' TYP, 36' AT WEST END PROPOSED BLDG HEIGHT = 34 FT T.O. PARAPET HISTORIC STATUS:NONE DENSITY:LIMIT PER P-1 NEGOTIATIONS OFF-STREET PARKING:LIMIT PER P-1 NEGOTIATIONS = 1 SPACE / UNIT. 0.25 SPACE / GUEST 72 PARKING SPACES PROVIDED BIKE PARKING:NONE REQUIRED 22 BICYCLE PARKING SPACES PROVIDED UNITS:57 PROVIDED PROJECT IS A GROUND UP NEW CONSTRUCTION, 3 STORY CONDOMINIUM BUILDING. THE PROJECT'S GROUND FLOOR CONSISTS OF A MIX OF OPEN AIR PARKING AND RESIDENTIAL WHILE THE UPPER FLOORS ARE PRIMARILY RESIDENTIAL CONDOMINUMS WITH LIMITED AMENITY SPACES. PROJECT ALSO CONTAINS VARIOUS OUTDOOR SPACES AROUND THE GROUNDS, AND AND AN EXISTING WATER RETENTION AREA ON THE NORTH / WEST CORNER OF THE SITE THAT IS A NO-BUILD ZONE. L1 -RESIDENTIAL / PARKING L2 -RESIDENTIAL / RECEPTION L3 -RESIDENTIAL / AMENITY / OCCUPIABLE ROOF DECK SITE UNIT SIZES - PROJECT WIDE UNIT NUMBER # BEDROOMS # BATHROOMS NET AREA Level 1 101 1 1 663 SF 102 2 2 1245 SF 103 1 1 651 SF 104 2 2 1101 SF 105 2 2 864 SF 106 2 2 940 SF 107 2 2 1009 SF Level 2 201 1 1 663 SF 202 2 2 1235 SF 203 1 1 657 SF 204 2 2 1094 SF 205 2 2 866 SF 206 1 1 788 SF 207 1 1 833 SF 208 1 1 788 SF 209 2 2 1322 SF 210 2 2 1340 SF 211 2 2 855 SF 212 2 2 974 SF 213 1 1 966 SF 214 3 2 1589 SF 215 1 1 1310 SF 216 1 1 789 SF 217 1 1 966 SF 218 3 2 863 SF 219 2 2 1229 SF 220 1 1 966 SF 221 2 2 1165 SF 222 1 1 1658 SF 223 1 1 751 SF 224 1 1 834 SF 226 2 2 1158 SF 227 3 2 1421 SF 228 1 1 922 SF 229 3 2 1395 SF 230 2 2 1097 SF Level 3 301 1 1 663 SF 302 2 2 1232 SF 303 1 1 660 SF 304 2 2 1094 SF 305 2 2 864 SF 306 1 1 788 SF 307 2 2 938 SF 308 1 1 788 SF 309 1 1 1136 SF 310 2 2 1340 SF 311 1 1 533 SF 312 2 2 974 SF 313 2 2 774 SF 314 3 2 1612 SF 316 1 1 790 SF 317 2 2 954 SF 318 3 2 903 SF 319 3 2 1450 SF 320 1 1 951 SF 321 1 1 716 SF 322 2 2 1657 SF Total 57785 SF UNIT MATRIX UNIT COUNT - PER LEVEL # BEDROOMS UNIT QUANTITY Level 1 1 2 2 5 Level 2 1 14 2 11 3 4 Level 3 1 9 2 9 3 3 UNIT COUNT - PROJECT WIDE # BEDROOMS UNIT QUANTITY 1 25 2 25 3 7 57 PARKING CALCULATION: REQUIRED RESIDENT PARKING STALLS: 1 STALL PER UNIT x 57 UNITS = 57 PARKING STALLS REQUIRED GUEST PARKING STALLS: 0.25 STALLS PER UNIT x 57 UNITS = 14.25 STALLS = 15 STALLS TOTAL REQUIRED PARKING = 57 + 15 = 72 PARKING STALLS TOTAL PROVIDED PARKING = 72 PARKING STALLS ACCESSIBLE PARKING REQUIREMENTS: RESIDENT ADA PARKING (CBC 11A09A.4 - ASSIGNED PARKING): 57 STALLS x 2% ADA = 1.14 = 2 STALLS (MIN. 1 VAN ADA) GUEST ADA PARKING (CBC 11A09A.5 - UNASSIGNED/VISITOR PARKING): 15 STALLS x 5% ADA = 0.75 = 1 STALL (MIN. 1 VAN ADA) TOTAL REQUIRED ADA STALLS: 3 STALLS MIN. - 2 OF WHICH TO BE VAN ACCESSIBLE TOTAL PROVIDED ADA = 3 STALLS - 2 VAN ADA EV PARKING REQUIREMENTS: REQUIRED EV PARKING (CALGREEN A4.106.4.2): 72 STALLS x 10% = 7.2 = 8 EV STALLS (INC. 1 VAN ACCESSIBLE) TOTAL PROVIDED EV STALLS: 8 (INC. 1 VAN ACCESSIBLE) PARKING CALCULATION 1. SCOPE DOCUMENTS: THESE DRAWINGS INDICATE THE GENERAL SCOPE OF THE PROJECT IN TERMS OF THE OVERALL CONCEPT, THE DIMENSIONS OF THE BUILDING, THE MAJOR ARCHITECTURAL ELEMENTS AND THE TYPE OF STRUCTURAL, MECHANICAL, ELECTRICAL SYSTEMS, ON THE BASIS OF THE GENERAL SCOPE INDICATED OR DESCRIBED. THE CONTRACTOR SHALL FURNISH ALL ITEMS REQUIRED FOR THE PROPER EXECUTION AND COMPLETION OF THE WORK. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO PROVIDE A FULLY FUNCTIONING INSTALLATION WHICH MEETS THE DESIGN INTENT, INCLUDING THE SPECIFIC REQUIREMENTS INCLUDED IN THESE DOCUMENTS. 2. APPROVAL BY THE CITY INSPECTOR DOES NOT CONSTITUTE AUTHORITY TO DEVIATE FROM THE PLANS AND SPECIFICATIONS. 3. ALL WORK SHOWN, NOTED OR DETAILED IS NEW, EXCEPT WHERE INDICATED AS EXISTING OR AS EXISTING TO REMAIN. 4. THE FOLLOWING NOTES AND TYPICAL DETAILS APPLY TO ALL DRAWINGS UNLESS OTHERWISE NOTED. 5. ABBREVIATIONS ON THIS SHEET APPLY TO THE ENTIRE SET UNLESS OTHERWISE NOTED. 6. DRAWINGS INDICATE GENERAL AND TYPICAL DETAILS OF CONSTRUCTION. WHERE CONDITIONS ARE NOT SPECIFICALLY INDICATED BUT ARE OF SIMILAR CHARACTER TO DETAILS SHOWN, DETAILS OF CONSTRUCTION SHALL BE USED SUBJECT TO THE REVIEW AND APPROVAL OF THE ARCHITECT. 7. CODE REQUIREMENTS: ALL CONSTRUCTION AND MATERIALS SHALL BE AS SPECIFIED AND AS REQUIRED BY THE APPLICABLE EDITION OF THE CALIFORNIA BUILDING CODE, LOCAL CODES AND JURISDICTIONAL AUTHORITIES AND AGENCIES. 8. THE CONTRACTOR SHALL PERFORM IN A MANNER CONFORMING TO APPLICABLE REGULATION, AND REQUIRMENTS OF ALL GOVERNING AGENCIES AS WELL AS STANDARD INDUSTRY PRACTICES. 9. RESPONSIBILITY: THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS AND SITE CONDITIONS BEFORE STARTING WORK. SHOULD A DISCREPANCY APPEAR IN THE SPECIFICATIONS OR DRAWINGS, OR IN THE WORK DONE BY OTHERS FROM THE CONTRACT DOCUMENTS THAT AFFECT ANY WORK, NOTIFY THE ARCHITECT AND OWNER IN WRITING AT ONCE FOR INSTRUCTIONS TO PROCEED. IF THE CONTRACTOR PROCEEDS WITH THE WORK AFFECTED WITHOUT WRITTEN INSTRUCTIONS FROM THE ARCHITECT, THE CONTRACTOR SHALL MAKE GOOD ANY RESULTING DAMAGE OR DEFECT TO THE SATISFACTION OF THE OWNER WITH NO RESULTING COST TO THE OWNER. SHOULD A CONFLICT OCCUR IN OR BETWEEN THE DRAWINGS AND SPECIFICATIONS, OR WHERE DETAIL REFERENCES ON THE CONTRACT DRAWINGS HAVE BEEN OMITTED, THE CONTRACTOR IS DEEMED TO HAVE ESTIMATED THE MOST EXPENSIVE MATERIAL AND CONSTRUCTION METHODS INVOLVED, UNLESS A WRITTEN DECISION FROM THE ARCHITECT / OWNER HAS BEEN OBTAINED WHICH DESCRIBES AN ALTERNATE METHOD AND/OR MATERIALS OR UNLESS THE ORIGINAL BID IS APPROPRIATELY QUALIFIED. 10. ANY QUESTIONS REGARDING THE COORDINATION OF NEW WORK OR EXISTING CONDITIONS MUST BE SUBMITTED TO THE OWNER'S REPRESENTATIVE IN WRITING PRIOR TO THE BID SUBMISSION AND WITH ADEQUATE TIME FOR RESPONSE TO ALL BIDDERS. THE OWNER'S REPRESENTATIVE WILL RESPOND TO QUESTIONS, SUBMITTED IN A TIMELY MANNER, WITH WRITTEN CLARIFICATIONS FORWARDED TO ALL BIDDERS. 11. THE EXISTING DIMENSIONS AND CONDITIONS SHOWN ON THESE DRAWINGS ARE ASSUMED TO BE ACCURATE BASED ON AVAILABLE INFORMATION. THE CONTRACTOR SHALL, PRIOR TO THE START OF CONSTRUCTION, VERIFY ALL EXISTING CONDITIONS, PROVIDE A COMPLETE FIELD LAYOUT ON THE JOB SITE, AND NOTIFY IN WRITING (RFI) TO THE OWNER'S REPRESENTATIVE, CONSTRUCTION MANAGER, AND ARCHITECT OF ANY DEVIATIONS OR CONFLICTS WITH THESE DRAWINGS. 12. THE DRAWINGS SHALL NOT BE SCALED. THE CONTRACTOR SHALL REFER TO THE DIMENSIONS INDICATED OR THE ACTUAL SIZES OF CONSTRUCTION ITEMS. WHERE NO DIMENSION OR METHOD OF DETERMINING A LOCATION IS GIVEN, VERIFY CORRECT DIMENSION OR LOCATION WITH THE OWNER'S REPRESENTATIVE PRIOR TO INSTALLATION. 13. THE CONTRACTOR SHALL CONFINE HIS/HER OPERATIONS ON THE SITE TO AREAS PERMITTED BY THE OWNER. THE WORK SHALL BE DONE IN ACCORDANCE WITH THE APPLICABLE LAWS, LOCAL ORDINANCES, PERMITS AND THE CONTRACT DOCUMENTS. THE JOB SITE SHALL BE MAINTAINED IN A CLEAN, ORDERLY CONDITION FREE OF DEBRIS AND LITTER, AND SHALL NOT BE UNREASONABLY ENCUMBERED WITH ANY MATERIALS OR EQUIPMENT. EACH SUBCONTRACTOR IMMEDIATELY UPON COMPLETION OF EACH PHASE OF HIS/HER WORK SHALL REMOVE ALL TRASH AND DEBRIS AS A RESULT OF HIS/HER OPERATION. 14. CONTRACTOR IS RESPONSIBLE FOR ALL INCIDENTAL WORK NECESSARY TO COMPLETE THE INSTALLATION OF NEW WORK. THIS INCLUDES, BUT IS NOT LIMITED TO, THE REMOVAL AND/OR REINSTALLATION OF ALL EXISTING ITEMS, OF PORTIONS OF THE EXISTING CONSTRUCTION WHETHER SHOWN OR NOT. 15. ALL MATERIALS STORED ON THE SITE SHALL BE PROPERLY STACKED AND PROTECTED TO PREVENT DAMAGE AND DETERIORATION UNTIL USE. FAILURE TO PROTECT MATERIALS MAY BE CAUSE FOR REJECTION OF WORK. 16. IT IS THE RESPONSIBILITY OF THE GENERAL CONTRACTOR AND THE SUBCONTRACTORS TO REVIEW ALL DRAWINGS, PROJECT MANUAL, ADDENDA, ETC. IN ORDER TO ASSURE THE COORDINATION OF ALL WORK AFFECTING EACH TRADE. FAILURE TO REVIEW AND COORDINATE ALL CONTRACT DOCUMENTS BY THE GENERAL CONTRACTOR WITH ALL THE SUBCONTRACTORS FOR APPLICABLE ITEMS OF THE WORK SHALL NOT RELIEVE THE RESPONSIBLE PARTY FROM PERFORMING ALL WORK SO REQUIRED AS PART OF THE CONTRACT. 17. THE CONTRACTOR SHALL LAYOUT AND SEQUENCE THE INSTALLATION OF THE WORK SO THAT THE DIFFERENT SYSTEMS DO NOT OBSTRUCT THE INSTALLATION OF SUCCESSIVE WORK. IN GENERAL, SYSTEMS INSTALLED FIRST SHOULD BE KEPT AS HIGH AND TIGHT TO STRUCTURE AS POSSIBLE SO AS TO LEAVE SPACE AVAILABLE FOR SYSTEMS WHICH FOLLOW. 18. DIMENSIONS ARE TO FACE OF FINISH, UNLESS OTHERWISE NOTED. 19. PROVIDE ALL NECESSARY BLOCKING, BACKING AND FRAMING FOR LIGHT FIXTURES, ELECTRICAL UNITS, H.V.A.C. EQUIPMENT AND ALL OTHER ITEMS REQUIRING SAME. 20. ALL MATERIALS SHALL BE HANDLED AND INSTALLED PER THE MANUFACTURER'S SPECIFICATIONS AND RECOMMENDATIONS. 21. STORAGE & DISPENSING OR USE OF ANY FLAMMABLE OR COMBUSTIBLE LIQUIDS, FLAMMABLE GASES AND HAZARDOUS CHEMICALS SHALL COMPLY WITH THE APPLICABLE CALIFORNIA FIRE CODE REGULATIONS. 22. NO MATERIALS SHALL BE STORED ON PUBLIC PROPERTY UNLESS AN ENCROACHMENT PERMIT IS FIRST OBTAINED FROM THE PUBLIC WORK DEPARTMENT. 23. WHERE DIMENSIONS ARE NOTED TO BE VERIFIED IN THE FIELD (V.I.F.) THE DIMENSION SHOWN IS THE DESIGN BASIS, BUT MAY DIFFER FROM ACTUAL CONDITIONS. CONTRACTOR SHALL VERIFY THESE DIMENSIONS WHILE LAYING OUT THE WORK AND REPORT ANY DISCREPANCIES BETWEEN THE DESIGN BASIS AND ACTUAL DIMENSIONS TO THE OWNER'S REPRESENTATIVE PRIOR TO PROCEEDING WITH THE WORK. WHERE DIMENSIONS ARE NOTED "±", FIELD DIMENSIONS MAY VARY FROM THE NOTED DIMENSIONS BY MINOR AMOUNTS. 24. THE CONTRACTOR SHALL DO ALL CUTTING, FITTING, OR PATCHING OF HIS/HER WORK THAT MAY BE REQUIRED TO MAKE ITS SEVERAL PARTS FIT TOGETHER PROPERLY AND SHALL NOT ENDANGER ANY OTHER WORK BY CUTTING, EXCAVATING, OR OTHERWISE ALTERING THE TOTAL WORK OR ANY PART OF IT. ALL PATCHING, REPAIRING, AND REPLACING OF MATERIALS AND SURFACES, CUT OR DAMAGED IN EXECUTION OF WORK, SHALL BE DONE WITH APPLICABLE MATERIALS SO THAT SURFACES REPLACED WILL UPON COMPLETION MATCH SURROUNDING SIMILAR SURFACES. 25. SHOP DRAWINGS: SHOP DRAWINGS ARE AN AID FOR FIELD PLACEMENT AND ARE SUPERSEDED BY THE ARCHITECTURAL DRAWINGS. IT SHALL BE THE RESPONSIBILITY OF THE GENERAL CONTRACTOR TO MAKE CERTAIN THAT ALL CONSTRUCTION IS IN FULL AGREEMENT WITH THE LATEST ARCHITECTURAL DRAWINGS. THE CONTRACTOR SHALL SUPPLY THE ARCHITECT/ENGINEER WITH A MINIMUM OF TWO COPIES OF CHECKED SHOP DRAWINGS BEARING THE CONTRACTOR'S STAMP OF APPROVAL AND SIGNATURE A MINIMUM OF THREE WEEKS PRIOR TO FABRICATION. THE REVIEW OF SHOP DRAWINGS AND SPECIFICATIONS BY THE ARCHITECT/ ENGINEER IS ONLY FOR GENERAL COMPLIANCE WITH THE ARCHITECTURAL AND/OR STRUCTURAL DRAWINGS AND SPECIFICATIONS. THIS REVIEW DOES NOT GUARANTEE IN ANY WAY THAT THE SHOP DRAWINGS ARE CORRECT, COMPLETE, NOR DOES IT INFER THAT THEY SUPERCEDE THE ARCHITECTURAL AND/OR STUCTURAL DRAWINGS. NO PORTION OF THE WORK REQUIRING A SHOP DRAWING OR SAMPLE SUBMISSION SHALL COMMENCE UNTIL THE SUBMISSION HAS BEEN REVIEWED BY THE ARCHITECT. ALL SUCH PORITONS OF THE WORK SHALL BE IN ACCORDANCE WITH APPROVED SHOP DRAWINGS AND SAMPLES. THE ARCHITECT SHALL NOT PROCEED WITH THE REVIEW OF SHOP DRAWINGS FOR A SPECIFIC SECTION OF SPECIFICATIONS UNLESS THE SHOP DRAWINGS FOR THAT SECTION AND ALL RELATED AND CONTIGUOUS SECTIONS OF WORK ARE SUBMITTED IN THEIR ENTIRETY SIMULTANEOUSLY. THE REVIEW AND ACCEPTANCE OF A PART OF THE SHOP DRAWINGS SHALL NOT IMPLY THE ACCPEPTANCE OF THE SHOP DRAWINGS IN WHOLE OR IN PART. 26. THE CONTRACT DRAWINGS AND SPECIFICATIONS REPRESENT THE FINISHED STRUCTURE. UNLESS OTHERWISE SHOWN, THEY DO NOT INDICATE THE METHOD OF CONSTRUCTION. THE GENERAL CONTRACTOR SHALL SUPERVISE AND DIRECT THE WORK AND HE/SHE SHALL BE SOLELY RESPONSIBLE FOR ALL CONSTRUCTION MEANS, METHODS, TECHNIQUES, SEQUENCES, AND PROCEDURES. OBSERVATION VISITS TO THE SITE BY FIELD REPRESENTATIVES OF THE ARCHITECT AND HIS CONSULTANTS DO NOT INCLUDE INSPECTION OF THE PROTECTIVE MEASURES OR THE PROCEDURES FOR SUCH METHODS OF CONSTRUCTION. ANY SUPPORT SERVICES PERFORMED BY THE ARCHITECT AND HIS CONSULTANTS DURING CONSTRUCTION SHALL BE DISTINGUISHED FROM CONTNUOUS AND DETAILED INSPECTION SERVCES WHICH ARE FURNISHED BY OTHERS. THESE SUPPORT SERVICES WHICH ARE FURNISHED BY THE ARCHITECT AND HIS CONSULTANTS, WHETHER OF MATERIAL OR WORK AND WHETHER PERFORMED PRIOR TO, DURING OR AFTER COMPLETION OF CONSTRUCTION, ARE PERFORMED SOLELY FOR THE PURPOSE OF ASSISTING IN QUALTIY CONTROL AND IN ACHIEVING CONFORMANCE WITH CONTRACT DRAWINGS AND SPECIFICATIONS, BUT THEY DO NOT GUARANTEE CONTRACTOR'S PERFORMANCE AND SHALL NOT BE CONSTRUED AS SUPERVISION OF CONSTRUCTION. 27. FIRE PROTECTION DRAWINGS SHALL BE PREPARED BY THE FIRE PROTECTION SUBCONTRACTOR AND SUBMITTED WITHIN 30 DAYS OF ISSUANCE OF BUILDING PERMIT.SUBMIT FIRE PROTECTION PLANS TO THE FIRE CHIEF FOR REVIEW AND STAMP OF APPROVAL FOR FIRE CODE REQUIREMENTS 28. PROVIDE PORTABLE FIRE EXTINGUISHER & CABINETS. NOT TO EXCEED MAXIMUM TRAVEL DISTANCE OF 75' 29. ALL UTILITY LINES, CONDUIT, MECHANICAL AND ELECTRICAL PIPES INSTALLED ABOVE THE CEILINGS SHALL BE HELD AS CLOSE AS POSSIBLE TO THE ADJACENT ROOF/FLOOR STRUCTURE. 30. EXIT SIGN ILLUMINATION CIRCUIT SHALL BE MAINTAINED AND CONTROLLED SEPARATELY FROM ALL OTHER CIRCUITS IN THE BUILDING. 31. SCOPE DOCUMENTS: TPROVIDE EXIT SIGNS AND DIRECTIONAL SIGNS WITH MINIMUM 6" HIGH BY 3/4" WIDE STROKE BLOCK LETTERS ON A CONTRASTING BACKGROUND. SEE PLANS FOR LOCATIONS. 2013 CBC SECTION 1011.6.1. 32. PEDESTRIAN AISLES SHALL BE 44 INCHES MINIMUM AND UNOBSTRUCTED WIDTH TO PUBLIC WAYS. 33. THE CONTRACTOR SHALL PROVIDE PROTECTION FOR PEDESTRIANS DURING CONSTRUCTION. 34. PROVIDE ALL ACCESS PANELS AS REQUIRED BY GOVERNING CODE OR AUTHORITIES TO ALL CONCEALED SPACES, VOIDS, ATTICS, AND SO ON. VERIFY THE TYPE REQUIRED WITH THE ARCHITECT PRIOR TO INSTALLATION. 35. ALL INSULATION MATERIALS MUST BE INSTALLED IN COMPLIANCE WITHT THE FLAME SPREAD AND SMOKE DENSITY REQUIREMENTS OF SECTION 707 OF THE 2013 CALIFORNIA BUILDING CODE. 36. BUILDING INSULATION TO BE CERTIFIED BY THE MANUFACTURER TO MEET THE CALIFORNIA STANDARDS FOR INSULATING MATERIAL. 37. THE BUILDING INSPECTOR SHALL BE NOTIFIED JUST PRIOR TO START OF CONSTRUCTION, INCLUDING GRADING IF IN SCOPE. 38. PROVIDE METAL TRIM OR CASING AT ALL EDGES OF PLASTER OR DRYWALL SURFACES WHERE IT TERMINATES OR MEETS ANY OTHER MATERIAL, UNLESS OTHERWISE NOTED. 39. EXIT SIGNS SHALL BE ILLUMINATED TO AN INTENSITY OF 5 FOOT CANDLES MINIMUM AT ALL TIMES (2013 CBC 1011.6.2) 40. EXIT DOORS SHALL SWING IN THE DIRECTION OF EXIT TRAVEL WHEN SERVING 50 OR MORE PERSONS AND IN ANY HAZARDOUS AREA OF GROUP H OCCUPANCY. SEE FIRE PROTECTION SYSTEM NOTES. 41. EVERY EXIT DOOR SHALL BE OPENABLE FROM THE INSIDE WITHOUT THE USE OF A LATCH OR TOOL, OR SPECIAL KNOWLEDGE OR EFFORT. SPECIAL LOCKING DEVICES SHALL BE ONLY APPROVED TYPE. 42. EXIT ILLUMINATION SHALL BE PROVIDED FROM AN EMERGENCY POWER SYSTEM OR ITS EQUIVALENT. SED 43. FIRE WALLS, FIRE BARRIERS, FIRE PARTITIONS, SMOKE BARRIERS AND SMOKE PARTITIONS OR ANY OTHER WALL REQUIRED TO HAVE PROTECTED OPENINGS OR PENETRATIONS SHALL BE EFFECTIVELY AND PERMANENTLY IDENTIFIED WITH SIGNS OR STENCILING AND SHALL COMPLY WITH CBC 703.7. SIGN SHALL READ "FIRE AND/OR SMOKE BARRIER -PROTECT ALL OPENINGS" 44. THE CONTRACTOR SHALL MAINTAIN A DESIGN TEAM PROJECT SIGN AT ALL TIME DURING CONSTRUCTION. 45. AT ANY POINT DURING CONSTRUCTION, FOR ANY AMOUNT OF TIME, WHEN THE INTRUSION OR FIRE ALARM IS SHUT DOWN, A SECURITY GUARD MUST BE PRESENT ON SITE AND LOCAL FIRE AUTHORITY SHALL BE NOTIFIED. NOTES TO CONSIDER FOR GENERAL NOTES FROM DEMO SHEET: 1. HAZARDOUS MATERIALS SURVEY HAS BEEN PERFORMED. IT IS THE CONTRACTOR'S RESPONSIBILITY TO REVIEW THIS AND RELATED DOCUMENTS FOR COORDINATION OF THE WORK. ALL HAZARDOUS MATERIALS ABATEMENT SHALL BE PERFORMED BY THE CONTRACTOR. SEE PROJECT MANUAL. 2. THE CONTRACTOR SHALL FIELD INSPECT ALL EXISTING CONDITIONS WHICH ARE TO REMAIN OR BE REMOVED FOR REUSE. IDENTIFY ANY DAMAGED CONDITIONS AND PROVIDE PATCHING AND REPAIR AS REQUIRED. 3. PROTECT ALL EXISTING FINISHES WHICH ARE TO REMAIN DURING CONSTRUCTION. CONTRACTOR SHALL BE RESPONSIBLE FOR PATCHING AND REPAIRING ALL EXISTING SURFACES, MATERIALS, OR FINISHES WHICH ARE TO REMAIN THAT BECOME DAMAGED DURING DEMOLITION OR CONSTRUCTION WORK. 4. ITEMS TO BE REMOVED AND REINSTALLED, OR SALVAGED AND TURNED OVER TO OWNER, SHALL BE CAREFULLY REMOVED. CONTRACTORS SHALL BE RESPONSIBILE FOR PROTECTING AND TRANSPORTING/STORING REMOVED ITEMS AND SUBSEQUENT PATCHING AND REPAIRING OF ALL EXISTING FINISHES TO REMAIN. 5. CLEAN AND PREPARE ALL EXISTING SURFACES FOR NEW WORK. 6. DIMENSIONS SHOWN ON DEMOLITION PLANS ARE FOR REFERENCE ONLY & SHALL BE CONSIDERED APPROXIMATE & SHALL BE FIELD VERIFIED BY CONTRACTOR. 7. WHERE NEW EMBEDDED, CONCEALED OR RECESSED WORK OCCURS, REMOVE EXISTING FINISH AS REQUIRED FOR INSTALLATION OF NEW WORK. REMOVE EXISTING FRAMING ONLY IF NECESSARY AND REPLACE AS REQUIRED. A/C AIR CONDITIONING ABV ABOVE ACOUS ACOUSTICAL ACP ACOUSTICAL CEILING PANEL ACT ACOUSTICAL CEILING TILE AD AREA DRAIN ADDL ADDITIONAL ADJ ADJUSTABLE AESS ARCHITECTURALLY EXPOSED STRUCTURAL STEEL AFF ABOVE FINISH FLOOR AGGR AGGREGATE AL ALUMINUM ALT ALTERNATE ANC ANCHOR ANO ANODIZED APPROX APPROXIMATE ARCH ARCHITECT / ARCHITECTURAL ASPH ASPHALT ASSY ASSEMBLY ATS AUTOMATIC TRANSFER SWITCH AUTO AUTOMATIC BD BOARD BITUM BITUMEN / BITUMINOUS BKG BACKING BLDG BUILDING BLKG BLOCKING BM BEAM BOD BASIS OF DESIGN BOT BOTTOM BR BACKER ROD BRKT BRACKET BSMT BASEMENT BTWN BETWEEN BUR BUILT-UP ROOF CAB CABINET CB CATCH BASIN CEM CEMENT CER CERAMIC CFCI CONTRACTOR FURNISHED CONTRACTOR INSTALLED CFOI CONTRACTOR FURNISHED OWNER INSTALLED CG CORNER GUARD CH CHANNEL CI CAST IRON CIP CAST IN PLACE CJ CONTROL JOINT CL CENTERLINE CLG CEILING CLO CLOSET CLR CLEAR CMU CONCRETE MASONRY UNIT COL COLUMN CONC CONCRETE CONN CONNECTION CONSTR CONSTRUCTION CONT CONTINUOUS CONTR CONTRACTOR COORD COORDINATE CORR CORRIDOR CP CEMENT PLASTER CPT CARPET CR CARD READER CSWK CASEWORK CT CERAMIC TILE CTR CENTER CTSK COUNTERSUNK CW CURTAIN WALL DBL DOUBLE DD DECK DRAIN DEMO DEMOLISH / DEMOLITION DEPT DEPARTMENT DF DRINKING FOUNTAIN DIA DIAMETER DIAG DIAGONAL DIM /S DIMENSION /S DISP DISPENSER DN DOWN DO DOOR OPENING DR DOOR DSA DIVISION OF STATE ARCHITECT DTL DETAIL DWG /S DRAWING /S DWR DRAWER (E)EXISTING EA EACH EAS EACH SIDE EAW EACH WAY EF EACH FACE EJ EXPANSION JOINT ELEC ELECTRICAL ELEV ELEVATOR EMBED EMBED /MENT EMERG EMERGENCY ENCL ENCLOSURE ENG ENGINEER EOS EDGE OF SLAB EP ELECTRICAL PANEL EPS EXPANDED POLYSTYRENE EQ EQUAL EQUIP EQUIPMENT ESCUT ESCUTCHEON ETC ET CETERA EWC ELECTRIC WATER COOLER EXP EXPANSION EXT EXTERIOR EXTR EXTRUDED FA FIRE ALARM FACP FIRE ALARM CONTROL PANEL FD FLOOR DRAIN FDC FIRE DEPARTMENT CONNECTION FDN FOUNDATION FE FIRE EXTINGUISHER FEC FIRE EXTINGUISHER CABINET FF FINISH FLOOR FG FINISH GRADE FHC FIRE HOSE CABINET FIN FINISH FL FLOOR FLUOR FLUORESCENT FO FACE OF FOC FACE OF CONCRETE FOF FACE OF FINISH FOG FACE OF GLASS FOS FACE OF STUD FP FIREPROOF /ING FR FIRE RATED FS FLOOR SINK FSD FIRE SMOKE DAMPER FSL FIRE SPRINKLER FSR FIRE SPRINKLER RISER FT FOOT / FEET FTG FOOTING FURR FURRING FWP FABRIC WRAPPED PANEL GA GAUGE GALV GALVANIZED GB GRAB BAR GC GENERAL CONTRACTOR GEN GENERATOR GFRC GLASS FIBER REINFORCED CONCRETE GFRG GLASS FIBER REINFORCED GYPSUM GL GLASS / GLAZING GLB GLUE LAMINATED BEAM GLU-LAM GLUE LAMINATED GND GROUND GR GRADE GSM GALVANIZED SHEET METAL GWB GYPSUM WALL BOARD GYP GYPSUM HAT CH HAT CHANNEL HB HOSE BIB HC HOLLOW CORE HDBD HARDBOARD HDR HEADER HDWD HARDWOOD HDWR HARDWARE HM HOLLOW METAL HO HOLD OPEN /MAGNETIC HORIZ HORIZONTAL HP HIGH POINT HPL HIGH PRESSURE LAMINATE HR HOUR HRAIL HANDRAIL HSS HOLLOW STRUCTURAL SECTION HT HEIGHT HTR HEATER HVAC "HEATING, VENTILATING AND AIR CONDITIONING" ID INSIDE DIAMETER / DIMENSION IN INCH INCAND INCANDESCENT INCL INCLUDE /ING INSUL INSULATION /ING INT INTERIOR INTER INTERMEDIATE INTUM INTUMESCENT INV INVERT JAN JANITOR /IAL JST JOIST JT JOINT K KIPS KIT KITCHEN KP KICK PLATE LAB LABORATORY LAM LAMINATE /D LAV LAVATORY LB POUND LKR LOCKER LL LEAD LINED LOC LOCATION LP LOW POINT LW LIGHT WEIGHT MACH MACHINE MAT MATERIAL MAX MAXIMUM MDF MEDIUM DENSITY FIBERBOARD MECH MECHANICAL MED MEDIUM MEMB MEMBRANE MEPS MOLDED EXPANDED POLYSTYRENE MEZZ MEZZANINE MFR MANUFACTURER MIN MINIMUM / MINUTE MIRR MIRROR MISC MISCELLANEOUS MO MASONRY OPENING MTD MOUNTED MTG MEETING MTL METAL MUL MULLION (N)NEW NIC NOT IN CONTRACT NO NUMBER NOM NOMINAL NR NON-RATED NTS NOT TO SCALE O/OVER O/H OVERHEAD OA OVERALL OC ON CENTER OD OUTSIDE DIAMETER / DIMENSION OFCI OWNER FURNISHED CONTRACTOR INSTALLED OFD OVERFLOW DRAIN OFF OFFICE OFOI OWNER FURNISHED OWNER INSTALLED OH OPPOSITE HAND OPNG OPENING OPP OPPOSITE PAD POWER ACTIVATED DEVICE PAF POWDER ACTUATED FASTENER PENN PENETRATION PERF PERFORATED PERIM PERIMETER PH PANIC HARDWARE PIV POST INDICATOR VALVE PL PLATE PL PROPERTY LINE PLAM PLASTIC LAMINATE PLAS PLASTER PLMB PLUMBING PLYWD PLYWOOD PNL PANEL PR PAIR PRCST PRECAST PREFAB PREFABRICATED PROJ PROJECTION PSF POUNDS PER SQUARE FOOT PSI POUNDS PER SQUARE INCH PT POINT / PAINT PTD PAINTED PTD/R PAPER TOWEL DISPENSER OR RECEPTACLE PTN PARTITION PTR PRESSURE TREATED PTRWD PRESSURE TREATED WOOD PVC POLYVINYL CHLORIDE QT QUARRY TILE QTY QUANTITY R RISER RAD RADIUS RAIL RAILING RB RESILIENT BASE RCP REFLECTED CEILING PLAN RD ROOF DRAIN RDWD REDWOOD REF REFERENCE REFL REFLECTED REFR REFRIGERATOR REINF REINFORCED /ING /MENT REQ REQUIRED RESIL RESILIENT RET RETAINING / RETARDANT REV REVISION RGTR REGISTER RM ROOM RO ROUGH OPENING RWL RAIN WATER LEADER SAF SELF-ADHERING FLASHING SAN SANITARY SASM SELF-ADHERING SHEET MEMBRANE SC SOLID CORE SCD SEE CIVIL DRAWINGS / SEAT COVER DISPENSER SCHD SCHEDULED SCWD SOLID CORE WOOD SD SOAP DISPENSER SECT SECTION SED SEE ELECTRICAL DRAWINGS SF SQUARE FOOT / FEET SF STOREFRONT SHT SHEET SHTG SHEATHING SHWR SHOWER SIM SIMILAR SJ SEISMIC JOINT SK SINK SLBB SHORT LEGS BACK TO BACK SLD SEE LANDSCAPE DRAWINGS SM SHEET METAL SMD SEE MECHANICAL DRAWINGS SMS SHEET METAL SCREW SND SANITARY NAPKIN DISPENSER SNR SANITARY NAPKIN RECEPTACLE SOFF SOFFIT SOG SLAB ON GRADE SPAC SPACING SPD SEE PLUMBING DRAWINGS SPEC /S SPECIFICATION /S SQ SQUARE SRF SURFACE SS STAINLESS STEEL / SOLID SURFACE SSD SEE STRUCTURAL DRAWINGS SSK SERVICE SINK SSM SOLID SURFACING MATERIAL ST STAIR STA STATION STC SOUND TRANSMISSION CLASS STD STANDARD STIFF STIFFENER STL STEEL STOR STORAGE STR STRUCTURAL STS SELF TAPPING SCREW SUSP SUSPENDED SY SQUARE YARD SYM SYMMETRICAL SYN SYNTHETIC SYS SYSTEM T TREAD T&B TOP AND BOTTOM T&G TONGUE AND GROOVE TEL TELEPHONE TEMP TEMPERATURE / TEMPORARY TER TERRAZZO THERM THERMOSTAT / THERMAL THK THICK T/O TOP OF TOC TOP OF CONCRETE TOIL TOILET TOS TOP OF STEEL TOW TOP OF WALL TPD TOILET PAPER DISPENSER TV TELEVISION TYP TYPICAL UL UNDERWRITERS LABORATORIES UON UNLESS OTHERWISE NOTED UR URINAL VERT VERTICAL VEST VESTIBULE VIF VERIFY IN FIELD VTR VENT THROUGH ROOF W WEST / WIDTH W/WITH W/O WITHOUT WC WATER CLOSET WD WOOD WDW WINDOW WGL WIRE GLASS WK WORK WO WHERE OCCURS WP WATERPROOF /ING WPT WORKING POINT WR WATER RESISTANT WRB WATER RESISTIVE BARRIER WSCT WAINSCOT WT WEIGHT WWF WELDED WIRE FABRIC WWM WELDED WIRE MESH XFMR TRANSFORMER +16' -0" LEVEL 2 BUILDING GRID LINE DATUM POINT DETAIL REFERENCE 1 A101 GRID DESIGNATION GRID LINE WORK POINT INDICATES REFERENCE POINT DIMENSIONED IN LARGER SCALE DRAWING. DRAWING NUMBER SHEET NUMBER DETAIL SECTION 1 A101DRAWING NUMBER SHEET NUMBER ELEVATION REFERENCE 1 A101DRAWING NUMBER SHEET NUMBER BLDG SECTION / ELEVATION 1 A101DRAWING NUMBER SHEET NUMBER INTERIOR ELEVATION A-501 INTERIOR ELEVATION NUMBER SHEET NUMBER 1A 1B 1C 1D +16' -6" INDICATES ELEVATION AT AREA INDICATES ELEVATION AT GIVEN POINT ROOM TAG ROOM NAME 2013 DOOR TAG DOOR # = ROOM # + LETTER FOR ADD'L DOORS 2013A RM NAME 280 SFROOM NUMBER EXAMPLE: LEVEL: 2, ZONE:0, RM#: 13) ROOM AREA WINDOW TAG WINDOW NUMBER LISTED IN WIN. SCHEDULE 18 PARTITION TYPE TAG PARTITIION TYPE DESIGNATION SEE INTERIOR PARTITION SCHEDULE 1A4W-2 DRAWING REVISIONS DELTA DESIGNATES REVISION ISSUANCE CLOUDS SHOWN FOR CURRENT REVISION ONLY 1 ALIGNALIGNMENT SYMBOL DESIGNATES ALIGNMENT OF DRAWING ELEMENTS CENTER LINE SYMBOL DESIGNATES CENTER LINE NORTH SYMBOL HEAVY LINE DESIGNATES NORTH DIRECTION FINISH TAG DOOR # = ROOM # + LETTER FOR ADD'L DOORS DP-2 KEYNOTE ANNOTATION KEYNOTE USED WITH KEYNOTE SCHEDULE IN LEGEND 300.01 © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 5 5 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 G-002 GENERAL NOTES, ABBREVIATIONS AND SYMBOLS El Pintado Residences GMMR, LLC 22.019.00 GENERAL NOTESABBREVIATIONS SYMBOLS LEGEND © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 5 6 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 G-400 RENDERING El Pintado Residences GMMR, LLC 22.019.00 NORTH ELEVATION VIEW FROM WEST EL PINTADO ROAD NORTH WEST ELEVATION VIEW SOUTH WEST VIEW FROM ADJACENT RESIDENTIAL PROPERTY TOWN OF DANVILLE, CONTRA COSTA COUNTY, CALIFORNIA VESTING TENTATIVE PARCEL MAP PROJECT SUMMARY ENGINEER'S STATEMENT EASTON C. MCALLISTER, PE DATE DESCRIPTIONNUMBER SHEET INDEX UTILITIES: AT&T PACIFIC GAS & ELECTRIC TOWN OF DANVILLE CENTRAL CONTRA COSTA SANITARY DISTRICT COMCAST SAN RAMON VALLEY FIRE PROTECTION DISTRICT EAST BAY MUNICIPAL UTILITY DISTRICT CABLE TELEVISION: TELEPHONE: SEWAGE DISPOSAL: FIRE PROTECTION: WATER SUPPLY: GAS & ELECTRIC: STORM DRAIN: P-1 PLANNED UNIT DEVELOPMENT VACANT, SINGLE FAMILY RESIDENTIAL O-1, R-15EXISTING ZONING: CIVIL ENGINEER: PROPOSED LAND USE: EXISTING LAND USE: PROPOSED ZONING: TOTAL AREA: OWNER/DEVELOPER: ARCHITECT: 82,664 SQ FT (APPROX 1.9 ACRES) ASSESSOR'S PARCEL NO:APN'S 200-140-110 & 200-140-140 PROPERTY ADDRESS: P.E. #61148 EXP 12/31/22 GLENN NOVOTNY 230 PIEDMONT LANE DANVILLE, CA 94526 TALUS, INC. 480 SAN RAMON VALLEY BLVD UNIT L DANVILLE, CA 94526 (415) 948-0440 FORM 4 ARCHITECTURE 120 SECOND STREET, 2ND FLOOR SAN FRANCISCO, CA 94105 (415) 651-8218 MULTI-FAMILY RESIDENTIAL 359 & 375 WEST EL PINTADO ROAD DANVILLE, CA 94063 TM-1 TM-2 TM-3 TM-4 TM-5 TM-6 TM-7 TM-8 VESTING TENTATIVE MAP TYPICAL SECTIONS, LEGEND & ABBREVIATIONS EXISTING CONDITIONS / TREE REMOVAL PLAN TREE INVENTORY SITE PLAN GRADING PLAN UTILITY PLAN STORM WATER CONTROL PLAN THIS TENTATIVE PARCEL MAP HAS BEEN PREPARED BY ME OR UNDER MY DIRECTION IN ACCORDANCE WITH STANDARD ENGINEERING PRACTICE. FOR CONDOMINIUM PURPOSES D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -1 2 2 1 8 3 T M A P .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 V E S T I N G T E N T A T I V E M A P N.T.S. TM-11 06/28/2022 SUBDIVISION 9399 - 375 W EL PINTADO ROAD PROJECT BENCHMARK CONTRA COSTA COUNTY BENCHMARK #3589 - A FASTENER AND TAG SET IN THE CENTER OF THE CONCRETE HEADWALL LOCATED 270± FEET SOUTH FROM THE INTERSECTION OF EL CERRO BOULEVARD AND EL PINTADO WEST IN DANVILLE, APPROXIMATELY 45 FEET WEST OF THE CENTERLINE OF EL PINTADO WEST. ELEVATION 362.20' NAD27 THE MONUMENT LINE ON EL CERRO BOULEVARD, AS SHOWN ON PARCEL MAP 69 PM 31, TAKEN AS N 89°00'22" W 260.46 FEET. BASIS OF BEARINGS ZONE X: AREAS OF 0.2% CHANCE FLOOD; AREAS OF 1% ANNUAL CHANCE FLOOD WITH AVERAGE DEPTHS OF LESS THAN 1 FOOT OR WITH DRAINAGE AREAS LESS THAN 1 SQUARE MILE; AND AREAS PROTECTED BY LEVEES FROM 1% CHANCE FLOOD. FLOOD INSURANCE RATE MAP PANEL NUMBER 06013C0434F, DATED 06/16/2009. FLOOD ZONE PROPOSED SPOT ELEVATION WATER LINE MANHOLE FIRE HYDRANT CURB INLET 101.0 8" W BOUNDARY SANITARY SEWER LINE STORM DRAIN LINE SD 6" SS LEGEND 101 6" W 42" SD 8" SS EXISTING TRANSFORMER T ELECTRICAL OVERHEAD WIRES OH GAS G DYH ELECTROLLER TRAFFIC SIGNAL ABBREVIATIONS SYMBOL AC AD BFP BLDG BW CB CO CONC DCDA DI DW DWY E, ELEC EX, EXIST EASE EG EL, ELEV EP FC FDC FF FG FH FL FW GB GR HDPE HP INV IRR JP JT LF LG LP MAX MIN MH NTS OH PIV PL POC PR, PROP R RCP RIM S SD SL SS TC T, TEL, TELE TRANS TS TYP UB W WM WV DESCRIPTION ASPHALTIC CONCRETE AREA DRAIN BACK FLOW PREVENTER BUILDING BOTTOM OF WALL CATCH BASIN CLEANOUT CONCRETE DOUBLE CHECK DETECTOR ASSEMBLY DROP INLET DOMESTIC WATER DRIVEWAY ELECTRIC EXISTING EASEMENT EXISTING GROUND ELEVATION EDGE OF PAVEMENT FACE OF CURB FIRE DEPARTMENT CONNECTION FINISH FLOOR FINISH GRADE FIRE HYDRANT FLOW LINE FIRE WATER GRADE BREAK GRATE ELEVATION HIGH DENSITY POLYETHYLENE HIGH POINT INVERT IRRIGATION JOINT POLE JOINT TRENCH LINEAR FOOT LIP OF GUTTER LOW POINT MAXIMUM MINIMUM MANHOLE NOT TO SCALE OVERHEAD POST INDICATOR VALVE WITH TAMPER PROPERTY LINE POINT OF CONNECTION PROPOSED RADIUS REINFORCED CONCRETE PIPE RIM ELEVATION SLOPE STORM DRAIN STREET LIGHT SANITARY SEWER TOP OF CURB TELEPHONE TRANSFORMER TOP OF SURFACE TYPICAL UTILITY BOX WATER WATER METER WATER VALVE EARTHWORKS: CUT 6,540 C.Y. FILL 870 C.Y. EXPORT 5,670 C.Y. ACCESS / FIRE LANE SCALE: 1"=5' A TM-5 P/L P/L PRIVATE DRIVE ENTRANCE SCALE: 1"=5' B 11' ENTRANCE 11' EXIT TM-5 W EL PINTADO ROAD SCALE: 1"=5' C 12.0' TRAVEL LANE 40.0' TRAVEL WAY 8.0' PARKING 12.0' TRAVEL LANE 8.0' PARKING 5.0' SIDEWALK L/S 5.0' TM-5 5.0' SIDEWALKL/S 5.0'P R O J E C T WIDTH VARIES P/L STORM TREATMENT STRUCTURE 3' MAX. HEIGHT RETAINING WALL 6' HIGH FENCE WEST EL PINTADO RD CONFORM TO EXISTING AC EXISTING GRADE EL. 362 366.8 P R O P E R T Y P R O P E R T Y EL. 356EL. 354 EL. 355360 350 370 380 390 400 S E T B A C K P R O P E R T Y P R O P E R T Y SLOPED GARAGE 6' HIGH FENCE VARYING HEIGHT RETAINING WALL, 6' MAXIMUM HEIGHT. SEE SECTION A THIS SHEET. DRIVEWAY 22' WIDEEL. 360360 350 370 380 390 400 D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -2 2 2 1 8 3 X S E C .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 T Y P I C A L S E C T I O N S 1"=5' TM-22 N-S SITE CROSS SECTIONN-S TM-6 E-W SITE CROSS SECTIONE-W TM-6 HORZ: 1"=20' VERT: 1"=10' HORZ: 1"=20' VERT: 1"=10' D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -3 2 2 1 8 3 E X I S T .d w g P L O T D A T E : 0 6 -2 7 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 E X I S T I N G C O N D I T I O N S / T R E E R E M O V A L P L A N 1" = 20' TM-33 EXISTING TREE TO BE REMOVED. REFER TO ARBORIST'S TREE INVENTORY TABLE (SHEET TM-4). LEGEND D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -4 2 2 1 8 3 T R E E .d w g P L O T D A T E : 0 6 -2 7 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 T R E E I N V E N T O R Y N.T.S. TM-44 D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -5 2 2 1 8 3 S I T E .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 P R E L I M I N A R Y S I T E P L A N 1" = 20' TM-55 ASPHALT PAVEMENT CONCRETE SIDEWALK BIO-TREATMENT PLANTER HATCH LEGEND D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -6 2 2 1 8 3 G R A D .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 G R A D I N G A N D D R A I N A G E P L A N 1" = 20' TM-66 ASPHALT PAVEMENT CONCRETE SIDEWALK BIO-TREATMENT PLANTER HATCH LEGEND UP UP UP UP UP 3 5 3 352 3 5 5 .5 351 3 5 5 355.25 355.5 3 5 5 3 5 4 .7 5 355.25 355.5 3 5 4 .2 5 3 5 4 .5 3 5 1 .7 5 3 5 2 353.25 353.5 3 5 1 . 2 5 3 5 1 . 5 3 5 0 .2 5 3 5 0 .5 3 55 3 5 4 3 5 4 35 6 356 35 7 357 358 3 5 2 3 5 3 3 5 4 355 351 3 5 3 3 5 0 356 356357 357 3 5 5 3 5 6 DS DSDS DS DS C O C O UP A-300 1 A-300 2 A-3011 A-301 2 A-300 3 A-300 4 1101 SF 2 BR 104 651 SF 1 BR 103 1245 SF 2 BR 102 663 SF 1 BR 101 864 SF 2 BR 105 2 A-302 940 SF 2 BR 106 1009 SF 2 BR 107 357.25 360.00 362.00362.00 360.50 4 A-302 4 A-302 3 A-302 3 A-302 1 A-302 1 A-302 S T E B A C K 5' - 0 " SETBACK 15' - 0" SE T B A C K 15 ' - 0 " SETBACK 15' - 0" SE T B A C K 10 ' - 0 " SETBACK 20' - 0" FIRE APPARATUS TURNAROUND (MIN. REQUIRED 13'-6" VERTICAL CLEARANCE) EXTENT OF BUILDING ABOVE ELV ELV ELV UTILITY UTILITY UTILITY TRASH LOBBY MECH ROOM PACKAGE (37) STORAGE UNITS BIKE BIKE BIKE BIKE BIKE BIKE BIKE BIKE TRASH 4' - 0 " 19 ' - 0 " 28 ' - 0 " 19 ' - 0 " 1' - 4 " 19 ' - 0 " 13 ' - 0 " BIORETENTION PLANTER, SEE CIVIL AND LANSCAPE DRAWINGS BIORETENTION PLANTER, SEECIVIL & LANSCAPE DRAWINGS BIORETENTION PLANTER, SEE CIVIL AND LANSCAPE DRAWINGS SLOPE DN EASEMENT, SCD. EASEMENT, SCD. 356.0' TO ALLOW FOR 13.5' FIRE TRUCK CLEARANCE AND 1.5' STRUCTURE ABOVE BI K E BI K E BI K E BI K E BI K E BI K E BI K E BI K E BI K E BIKE BIKE BIKE BIKE TYP. 9' - 0" TY P . 19 ' - 0 " 8' - 0" 16 ' - 0 " 7 6 9 7 5 15 5 2 3 8 5 19' - 0"28' - 0"19' - 0" TY P . 9' - 0 " MIN. CLR 28' - 0" CL E A R 21 ' - 0 " 360.00 W. E L P I N T ADO ROAD EXISTING EASEMENT, SCD. PEDESTRIAN RAMP DOWN TO PARKING LEVEL BUILDING ENTRANCE, SCD. STAIR AND RAMP ENTRANCE AT SECND LEVEL ENTRANCE, SEE A-102 AND CIVIL DRAWINGS. RAMP AT SITE PATH OF EGRESS, SCD. (20) STORAGE UNITS WETLAND WATER MITIGATION AREA. SEE CIVIL AND LANDSCAPE DRAWINGS WALKING PATH. SEE CIVIL AND LANDSCAPE DRAWINGS. 5' - 0 " 1 0 ' - 0 "PROPERTY LINE SHEET NOTES: KEYNOTES LEGEND 0'8'16' 32' © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 6 : 2 4 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-101 FLOOR PLAN - LEVEL 1 El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 FLOOR PLAN - LEVEL 1 UNIT SIZES - L1 Unit Number Number of Beds Number of Baths Net Area 101 1 1 663 SF 102 2 2 1245 SF 103 1 1 651 SF 104 2 2 1101 SF 105 2 2 864 SF 106 2 2 940 SF 107 2 2 1009 SF Total 6473 SF UNIT COUNT - L1 Number of Beds Unit Quantity 1 2 2 5 PARKING COUNT STALL TYPE QUANTITY STANDARD (9'x19') 59 COMPACT (8'x16') 2 STANDARD - ADA (9'x19') 1 STANDARD - ADA - VAN (9'x19') 2 EV - STANDARD (9'x19') 7 EV - VAN ADA (9'x19') 1 72 PARKING SUMMARY: 72 PROPOSED SPACES INCLUDING (46) RESIDENT SPACES (8) RESIDENT EV SPACES (1) ADA VAN FOR RESIDENTS (1) ADA FOR RESIDENTS (1) ADA EV VAN (14) GUEST SPACES (1) ADA VAN FOR GUESTS UP S T O P DS DS DS DS C O UP A-300 1 A-300 2 A-3011 A-301 2 A-300 3 A-300 4 1589 SF 3 BR 214 1310 SF 2 BR 215 966 SF 1 BR 213 855 SF 1 BR 211 1340 SF 2 BR 210 788 SF 1 BR 208 788 SF 1 BR 206 1322 SF 2 BR 209 833 SF 1 BR 207 966 SF 1 BR 217 1229 SF 2 BR 219 789 SF 1 BR 216 863 SF 1 BR 218 1165 SF 2 BR 221 966 SF 1 BR 220 LOBBY 834 SF 1 BR 224 922 SF 1 BR 228 1097 SF 2 BR 230 1158 SF 2 BR 226 974 SF 1 BR 212 1658 SF 3 BR 222 751 SF 1 BR 223 1421 SF 3 BR 227 1395 SF 3 BR 229 1094 SF 2 BR 204 657 SF 1 BR 203 1235 SF 2 BR 202 663 SF 1 BR 201 866 SF 2 BR 205 2 A-302 371.00 371.00 371.00 4 A-302 4 A-302 3 A-302 3 A-302 1 A-302 1 A-302 SE T B A C K 15 ' - 0 " SETBACK 15' - 0" STEBACK 15' - 0" SE T B A C K 10 ' - 0 " SETBACK 20' - 0" SE T B A C K 5' - 0 " BRIDGE ABOVE 366.83 1 0 ' - 0 "PROPERTY LINE PRIVATE EXTERIOR BALCONY, TYP. SHEET NOTES: KEYNOTES LEGEND 0'8' 16' 32' © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 6 : 2 6 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-102 FLOOR PLAN - LEVEL 2 El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 FLOOR PLAN - LEVEL 2 UNIT SIZES - L2 Unit Number Number of Beds Number of Baths Net Area 201 1 1 663 SF 202 2 2 1235 SF 203 1 1 657 SF 204 2 2 1094 SF 205 2 2 866 SF 206 1 1 788 SF 207 1 1 833 SF 208 1 1 788 SF 209 2 2 1322 SF 210 2 2 1340 SF 211 2 2 855 SF 212 2 2 974 SF 213 1 1 966 SF 214 3 2 1589 SF 215 1 1 1310 SF 216 1 1 789 SF 217 1 1 966 SF 218 3 2 863 SF 219 2 2 1229 SF 220 1 1 966 SF 221 2 2 1165 SF 222 1 1 1658 SF 223 1 1 751 SF 224 1 1 834 SF 226 2 2 1158 SF 227 3 2 1421 SF 228 1 1 922 SF 229 3 2 1395 SF 230 2 2 1097 SF Total 30494 SF UNIT COUNT - L2 Number of Beds Unit Quantity 1 14 2 11 3 4 A-300 1 A-300 2 A-3011 A-301 2 A-300 3 1612 SF 3 BR 314 774 SF 2 BR 313 954 SF 2 BR 317 1450 SF 3 BR 319 1657 SF 3 BR 322 716 SF 1 BR 321 903 SF 1 BR 318 788 SF 1 BR 308 1340 SF 2 BR 310 974 SF 1 BR 312 A-300 4 790 SF 1 BR 316 1136 SF 2 BR 309 788 SF 1 BR 306 533 SF 1 BR 311 938 SF 2 BR 307 951 SF 1 BR 320 1094 SF 2 BR 304 660 SF 1 BR 303 1232 SF 2 BR 302 663 SF 1 BR 301 864 SF 2 BR 305 2 A-302 TERRACE 382' - 0" 382' - 0" 382' - 0" 4 A-302 4 A-302 3 A-302 3 A-302 1 A-302 1 A-302 3108 SF AMENITY 300 BI K E BI K E WEIGHTSBENCH BI K E TR E A D -M I L L RO W I N G RO W I N G BILLIARDS SH U F F L E B O A R D SE T B A C K 15 ' - 0 " SETBACK 15' - 0" STEBACK 15' - 0" SE T B A C K 10 ' - 0 " SETBACK 20' - 0" SE T B A C K 5' - 0 " 1 0 ' - 0 " PROPERTY LINE SHEET NOTES: KEYNOTES LEGEND 0'8' 16' 32' © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 6 : 3 0 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-103 FLOOR PLAN - LEVEL 3 El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 FLOOR PLAN - LEVEL 3 UNIT SIZES - L3 Unit Number Number of Beds Number of Baths Net Area 301 1 1 663 SF 302 2 2 1232 SF 303 1 1 660 SF 304 2 2 1094 SF 305 2 2 864 SF 306 1 1 788 SF 307 2 2 938 SF 308 1 1 788 SF 309 1 1 1136 SF 310 2 2 1340 SF 311 1 1 533 SF 312 2 2 974 SF 313 2 2 774 SF 314 3 2 1612 SF 316 1 1 790 SF 317 2 2 954 SF 318 3 2 903 SF 319 3 2 1450 SF 320 1 1 951 SF 321 1 1 716 SF 322 2 2 1657 SF Total 20818 SF UNIT COUNT - L3 Number of Beds Unit Quantity 1 9 2 9 3 3 A-300 1 A-300 2 A-3011 A-301 2 A-300 3 A-300 4 393' - 0" 394' - 0" T.O PARAPET 393' - 0" 393' - 0" 2 A-302 MECH SCREEN MECH SCREEN MECH SCREEN 4 A-302 4 A-302 3 A-302 3 A-302 1 A-302 1 A-302 ROOFTOP SOLAR PANEL ARRAY SHEET NOTES: KEYNOTES LEGEND 0'8' 16' 32' © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 6 : 3 1 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-104 ROOF PLAN El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 ROOF PLAN Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 31' - 8 19/32"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"25' - 9 13/32" 33 ' - 0 " 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 4 A-302 3 A-302 PR O P E R T Y L I N E OUTLINE OF PREVIOUS SUBMITTAL CUT THROUGH BRIDGE ABCDEFGHIJKL Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 7' - 0 " 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 31' - 8 19/32"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"29' - 0"25' - 9 13/32" CUT THROUGH BRIDGE 4 A-302 3 A-302 PR O P E R T Y L I N E OUTLINE OF PREVIOUS SUBMITTAL 405' - 0" A B C D E F G H I J K L Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 29' - 0"29' - 0"29' - 0" 4 A-302 EFGH Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 29' - 0"29' - 0"25' - 9 13/32" 33 ' - 0 " 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 3 A-302 PR O P E R T Y L I N E I J K L SHEET NOTES PTD WOOD FACADE LOCATION TBD LEGEND 0'8' 16' 32' KEYNOTES NICHIHA (OR SIM) FIBER CEMENT PARTIALLY OPEN SCREEN IN MED GRAY COLOR AT GARAGE. AT OTHER LOCATIONS FIBER CEMENT PANEL SYSTEM TO MATCH GLAZING. FRAMING TO BE PAINTED BRONZE ALUM. BROWN STUCCO FINISH AT FLOOR LEVEL FASCIA, ROOF EAVE, AND PARAPET EXPOSED CONCRETE 1X6 MEDIUM BROWN KEBONY (OR SIM) HORIZONTAL SIDING GRAY ALUM LOUVER ROOF SCREEN AROUND MECH EQUIPMENT SITE TOPOGRAPHY GUARD RAIL: WOOD GUARD RAIL CAP STEEL POSTS PAINTED BRONZE STRAINLESS STEEL HORIZONTAL RODS © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 6 : 5 7 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-300 BUILDING ELEVATIONS El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 MAIN BUILDING - NORTH ELEVATION 1/16" = 1'-0"2 MAIN BUILDING - SOUTH ELEVATION 1/16" = 1'-0"3 NORTH BUILDING - NORTH ELEVATION 1/16" = 1'-0"4 SOUTH BUILDING - SOUTH ELEVATION Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 2 A-302 1 A-302 OUTLINE OF PREVIOUS SUBMITTAL 4 3 2 1567 Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 16' - 0 11/256"32' - 0"25' - 11 245/256"65' - 5"29' - 0"29' - 0" 2 A-302 1 A-302 4321 5 6 7 SHEET NOTES PTD WOOD FACADE LOCATION TBD LEGEND 0'8' 16' 32' KEYNOTES NICHIHA (OR SIM) FIBER CEMENT PARTIALLY OPEN SCREEN IN MED GRAY COLOR AT GARAGE. AT OTHER LOCATIONS FIBER CEMENT PANEL SYSTEM TO MATCH GLAZING. FRAMING TO BE PAINTED BRONZE ALUM. BROWN STUCCO FINISH AT FLOOR LEVEL FASCIA, ROOF EAVE, AND PARAPET EXPOSED CONCRETE 1X6 MEDIUM BROWN KEBONY (OR SIM) HORIZONTAL SIDING GRAY ALUM LOUVER ROOF SCREEN AROUND MECH EQUIPMENT SITE TOPOGRAPHY GUARD RAIL: WOOD GUARD RAIL CAP STEEL POSTS PAINTED BRONZE STRAINLESS STEEL HORIZONTAL RODS © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 2 9 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-301 BUILDING ELEVATIONS El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 OVERALL SITE - EAST ELEVATION 1/16" = 1'-0"2 WEST ELEVATION Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 4 A-302 3 A-302 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 1' - 0 " Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 1 A-302 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " 33 ' - 0 " 1' - 0 " Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 2 A-302 1 A-302 33 ' - 0 " 11 ' - 0 " 11 ' - 0 " 11 ' - 0 " Level 1 360' -0" Level 2 371' -0" Level 3 382' -0" ROOF 393' -0" 3 A-302 2. 9 0 9' - 6 " 2. 9 0 9' - 6 " 2. 9 0 9' - 6 " © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 3 6 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-302 BUILDING SECTIONS El Pintado Residences GMMR, LLC 22.019.00 1/16" = 1'-0"1 EAST-WEST SECTION THROUGH MAIN BUILDING 1/16" = 1'-0"4 NORTH-SOUTH SECTION @ CENTER 1/16" = 1'-0"3 NORTH-SOUTH SECTION @ AMETITY ROOM 1/16" = 1'-0"2 SECTION THROUGH SOUTH BUILDING SHEET NOTES 1. ALL DIMENSIONS AND NOTES ARE TYPICAL UON. 2. SEE FINISH SCHEDULE ON SHEED AI-130 FOR LIST OF MATERIALS AND FINISHES. 3. SEE FINISH PLANS ON SHEET AI-130 FOR ADDL INFORMATION. 4. SEE RCP'S FOR ADD'L INFORMATION. 5. SEE INTERIOR WINDOW SCHEDULE ON SHEET A-750 FOR ADDL INFORMATION. 6. SEE DOOR SCHEDULE ON SHEET A-700 FOR ADDL INFORMATION. 7. SEE ELECTRICAL DRAWINGS FOR POWER AND SIGNAL DEVICES SYMBOL DESCRIPTION LEGEND 0'4' 8' 16' KEYNOTES © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 4 0 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-501 ENLARGED PLANS - NORTH El Pintado Residences GMMR, LLC 22.019.00 1/8" = 1'-0"1 LEVEL 1 - INTERIOR LAYOUTS 1/8" = 1'-0"2 LEVEL 2 - INTERIOR LAYOUTS 1/8" = 1'-0"3 LEVEL 3 - INTERIOR LAYOUTS © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 4 2 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-502 ENLARGED PLANS - SOUTH El Pintado Residences GMMR, LLC 22.019.00 1/8" = 1'-0"1 LEVEL 1 - INTERIOR LAYOUTS 1/8" = 1'-0"2 LEVEL 2 - INTERIOR LAYOUTS © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 4 5 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-503 ENLARGED PLANS - EAST El Pintado Residences GMMR, LLC 22.019.00 1/8" = 1'-0"1 LEVEL 2 - INTERIOR LAYOUTS 1/8" = 1'-0"2 LEVEL 3 - INTERIOR LAYOUTS UP 9' - 2" 17 ' - 6 3 / 4 " © 2020 230 PIEDMONT LANE DANVILLE, CA 94526 PROJECT NO: STAMP: SHEET NAME: 1 2 0 S e c o n d S t 2 n d F l o o r S a n F r a n c i s c o, C A 9 4 1 0 5 T e l : 4 1 5 . 7 7 5 . 8 7 4 8 F a x : 4 1 5 . 7 7 5 . 8 7 5 2 w w w . F o r m 4 i n c . c o m SHEET NO: PHASE: KEY PLAN: CLIENT: ISSUANCE DATE REVISIONS Δ DELTA DATE PLANNING SUBMITTAL 28/06/2022 6/ 2 8 / 2 0 2 2 6 : 0 7 : 4 8 P M A u t o d e s k D o c s : / / 2 2 . 0 1 9 . 0 0 3 7 5 W E l P i n t a d o H o u s i n g / 3 7 5 W E l P i n t a d o _ A R . r v t 375 W El Pintado Road, Danville, CA 94526 A-504 ENLARGED PLANS - WEST El Pintado Residences GMMR, LLC 22.019.00 1/8" = 1'-0"1 LEVEL 2 - INTERIOR LAYOUTS 1/8" = 1'-0"2 LEVEL 3 - INTERIOR LAYOUTS 375 W. EL PINT A D O R O A D Senior Luxury Livi n g Subdivision 9399Town of Danville, Cont r a C o s t a C o u n t y , C A S H E E T I N D E X L 0 . 0 C O V E R S H E E T L 0 . 1 G E N E R A L N O T E S , L E G E N D S , & S C H E D U L E S L 0 . 2 P L A N T I N G N O T E S & P L A N T M A T E R I A L K E Y L 1 . 1 L A Y O U T / L I G H T I N G P L A N ( G R O U N D L E V E L ) L 1 . 2 L A Y O U T / L I G H T I N G P L A N ( G R O U N D L E V E L ) L 1 . 3 L A Y O U T / L I G H T I N G P L A N ( G R O U N D L E V E L ) L 1 . 4 L A Y O U T / L I G H T I N G P L A N ( 3 r d L E V E L R O O F ) L 1 . 5 L A Y O U T / L I G H T I N G P L A N ( 3 r d L E V E L R O O F ) L 2 . 1 P L A N T I N G P L A N ( G R O U N D L E V E L ) L 2 . 2 P L A N T I N G P L A N ( G R O U N D L E V E L ) L 2 . 3 P L A N T I N G P L A N ( G R O U N D L E V E L ) L 2 . 4 P L A N T I N G P L A N ( 3 r d L E V E L R O O F ) L 2 . 5 P L A N T I N G P L A N ( 3 r d L E V E L R O O F ) L 3 . 1 D E S I G N D E V E L O P M E N T D E T A I L S / I M A G E R Y Landscape PlansPrepared By: V I C I N I T Y M A P S I T E C D NO PA R K I N G N O P A R K I N G N O P A R K I N G NO PA R K I N G N O P A R K I N G UPUP U P U P 357.25 3 6 0 . 5 0 3 6 0 . 0 0 1.783% 3 7 1 ' - 0 " CONTEXT M A P W . E L P I N T A D O R O A D BUILDI N G B U I L D I N G BUIL D I N G 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m P:\2021\21013.01\dwg\sheet\L0.0-DC.dwg, 6/28/2022 3:16:47 PM 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m P:\2021\21013.01\dwg\sheet\L0.1-DC.dwg, 6/28/2022 3:16:41 PM 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m P:\2021\21013.01\dwg\sheet\L0.2-DC.dwg, 6/28/2022 3:16:41 PM U P U P 3 5 7 . 2 5 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NOPARKIN G NO PA R K I N G NO PARKING NOPARKI N G P:\2021\21013.01\dwg\sheet\L1.1-DC.dwg, 6/28/2022 3:16:45 PM NO PA R K I N G NO PA R K I N G N O P A R K I N G 1.783% 3 7 1 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARKI N G NO PA R K I N G NO PARKING NOPARK I N G P:\2021\21013.01\dwg\sheet\L1.2-DC.dwg, 6/28/2022 3:16:58 PM CD N O P A R K I N G N O P A R K I N G U P U P 3 6 0 . 5 0 36 0 . 0 0 1.783% 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARKIN G NO PA R K I N G NO PARKING NOPARKI N G P:\2021\21013.01\dwg\sheet\L1.3-DC.dwg, 6/28/2022 3:17:13 PM U P 3 5 7 . 2 5 3 8 2 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARK I N G NO PA R K I N G NO PARKING NOPAR K I N G P:\2021\21013.01\dwg\sheet\L1.4-DC.dwg, 6/28/2022 3:17:06 PM CD N O P A R K I N G N O P A R K I N G U P U P 3 6 0 . 5 0 360.00 1.783%371' - 0 " 3 8 2 ' - 0 " 3 8 2 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NOPARK I N G NO PAR K I N G NO PARKING NO PARKIN G P:\2021\21013.01\dwg\sheet\L1.5-DC.dwg, 6/28/2022 3:17:11 PM U P U P 3 5 7 . 2 5 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NOPARKIN G NO PA R K I N G NO PARKING NOPARKI N G P:\2021\21013.01\dwg\sheet\L2.1-DC.dwg, 6/28/2022 3:17:10 PM NO PA R K I N G NO PA R K I N G N O P A R K I N G 1.783% 3 7 1 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARKI N G NO PA R K I N G NO PARKING NOPARK I N G P:\2021\21013.01\dwg\sheet\L2.2-DC.dwg, 6/28/2022 3:16:53 PM CD N O P A R K I N G N O P A R K I N G U P U P 3 6 0 . 5 0 36 0 . 0 0 1.783% 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARKIN G NO PA R K I N G NO PARKING NOPARKI N G P:\2021\21013.01\dwg\sheet\L2.3-DC.dwg, 6/28/2022 3:17:18 PM U P 3 5 7 . 2 5 3 8 2 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NO PARK I N G NO PA R K I N G NO PARKING NOPAR K I N G P:\2021\21013.01\dwg\sheet\L2.4-DC.dwg, 6/28/2022 3:17:02 PM CD U P U P 3 6 0 . 5 0 360.00 1.783%371 ' - 0 " 3 8 2 ' - 0 " 3 8 2 ' - 0 " 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m NOPARK I N G NO PAR K I N G NO PARKING NO PARKIN G P:\2021\21013.01\dwg\sheet\L2.5-DC.dwg, 6/28/2022 3:16:58 PM 1 7 0 0 N . B r o a d w a y , S u i t e 4 0 1 W a l n u t C r e e k , C A 9 4 5 9 6 T ( 9 2 5 ) 9 4 5 - 0 3 0 0 F ( 9 2 5 ) 9 4 5 - 6 6 8 8 w w w . e n v i r o n m e n t a l f o r e s i g h t . c o m P:\2021\21013.01\dwg\sheet\L3.1-DC.dwg, 6/28/2022 3:16:48 PM D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -7 2 2 1 8 3 U T I L .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 U T I L I T Y P L A N 1" = 20' TM-77 UNDERGROUND DRY UTILITIES ALL ELECTRICAL, TELECOMMUNICATION, AND CABLE TELEVISION UTILITIES SHALL BE PLACED UNDERGROUND IN A JOINT TRENCH WITHIN THE BOUNDARIES OF THE PROPOSED SUBDIVISION. JOINT UTILITY POLES SHALL NOT BE USED. D R A W I N G N A M E : P :\p 2 2 1 8 3 \T -M A P \T M -8 2 2 1 8 3 S W C P .d w g P L O T D A T E : 0 6 -2 8 -2 2 P L O T T E D B Y : e a s t o n R e v i s i o n s N o . Drawing Number: OF P U R P O S E S - S U B D . 9 3 9 9 - 3 7 5 W E S T E L P I N T A D O R D C A L I F O R N I A C O N T R A C O S T A C O U N T Y T O W N O F D A N V I L L E 8 22183 Scale No. 61148 EXP. 12/31/22 VIC LI Stamp: Date Job No. 06/28/22 S T O R M W A T E R C O N T R O L P L A N 1" = 30' TM-88 FLOW-THROUGH PLANTER (IMP-1, 2 & 3) N.T.S. ASPHALT PAVEMENT CONCRETE SIDEWALK C.3 TREATMENT PLANTER HATCH LEGEND 0+ 0 0 0+ 2 5 0 + 5 0 0+ 7 5 1 + 0 0 1+ 2 5 1+5 0 1+7 5 2+00 2+25 2+ 5 0 2+75 3+ 0 0 3+ 2 5 23.5' 13.6' 14.8' 14.8' 17.9' 14.2' 1.6' 1.5' 6.5' 18.8' R=31.2 R=20.0 R=24.9 R=23.9 R=72.8 R=25.9 R=13.9 R=14.5 6.8' 11.6' 2.3' 2.4' R=6.3 R=23.8 R=7.1 R=30.0 R=9.3 R=60.5 R=11.5 R=5.7 R=9.0 3+18 2 + 0 0 2 + 2 0 2+4 0 2 + 6 0 2+8 0 3 + 0 0 DSDS DS 2 8 ' 20 ' 28' 60 ' 55' 20' 3 5 3 352 355.5 351 3 5 5 355.25355.5 355 354. 7 5 355.25355.5 354 . 2 5 35 4 . 5 351 . 7 5 35 2 353.25 353.5 3 5 1 . 2 5 3 5 1 . 5 350 . 2 5 35 0 . 5 355 354 354 356 356 357 357 358 35 2 35 3 35 4 355 351 3 5 3 3 5 0 356 3 5 6 3 5 7 357 35 5 35 6 RIPRAP CALTRANS CLASS I TRIBUTARY CHANNEL COBBLE/GRAVEL MIX (TYP.) RIPRAP CALTRANS CLASS III TOP OF BANK MITIGATION BELOW TOP OF BANK AREA (12,400 SF) PARKING LOT RIPRAP CALTRANS CLASS III TRIBUTARY CHANNEL MITIGATION (146 LF) MAIN CULVERT INLET INVERT = 349.0' MAIN CULVERT OUTFALL INVERT = 355.5' TRIBUTARY CULVERT INVERT = 355.5' 2:1 3:1 1:1 1: 1 1. 5 : 1 2:1 0+ 0 0 0+ 2 5 0 + 5 0 0+ 7 5 1 + 0 0 1+ 2 5 1+5 0 1+7 5 2+00 2+25 2+ 5 0 2+75 3+ 0 0 3+ 2 5 2 + 0 0 2 + 2 0 2+4 0 2 + 6 0 2+8 0 3 + 0 0 2.5:1 2:1 IN-CHANNEL WETLAND, TYP. (1,300 SQ. FT. TOTAL) MAIN CHANNEL COBBLE/GRAVEL MIX (TYP.) MAIN CHANNEL MITIGATION (304 LF) TRIBUTARY CONFLUENCE WITH MAIN CHANNEL SEASONAL WETLAND MITIGATION,TYP (2,553 SF TOTAL) PROPERTY BOUNDARY EXISTING CONTOUR PROPOSED GRADE (0.5 FT INTERVAL) CREEK CENTERLINE TOP OF BANK RIPRAP CALTRANS CLASS III RIPRAP CALTRANS CLASS I MAIN CHANNEL COBBLE/GRAVEL MIX TRIBUTARY CHANNEL COBBLE/GRAVEL MIX WOODEN FENCE GRADING LEGEND 100 100 11+00 PROJECT #31137 DRAWN BY: CHECKED BY: ORIGINAL DRAWING SIZE: 22 X 34 GMMR, LLC MITIGATION PLAN DANVILLE, CALIFORNIA Date Issues And Revisions No. Sheet PERMIT SET06/28/22 2169-G East Francisco Blvd. San Rafael, CA 94901 (415) 454-8868 Phone (415) 454-0129 Fax GRADING PLAN SCALE: 1"=10'1 MITIGATION GRADING PLAN 1 N SCALE: 1 " = 10 ' 0 10 SCALE: AS INDICATED AS,DG BB EL E V A T I O N ( F T ) EL E V A T I O N ( F T ) STATION 350 355 360 350 355 360 0+25 0+50 0+75 1+00 1+25 1+50 1+75 2+00 2+25 2+50 2+75 3+00 3+25 0%-13 % -0% 0%-1 5 % 0% 0%-1 7 % -0% 0%- 2 5 % 0% 0%-1 9 % 0% -0% 0% -1 5 % 0% 0% - 2 2 % 4% 1% - 2 3 % -0% 18% 4% 18% 6% 18% 5% 19% 6% 16% 4% 17% 6% 18% 5% 17% 5% CHANNEL CENTERLINE GROUND SURFACE MAIN CHANNEL RIFFLE COBBLE/GRAVEL MIX MIN 1.0' DEPTH RIPRAP OUTFALL CALTRANS CLASS III MAIN CULVERT OUTFALL INVERT = 355.5' MAIN CULVERT INLET INVERT = 349.0' EXISTING GRADE PROPOSED GRADE RIPRAP OUTFALL CALTRANS CLASS III EL E V A T I O N ( F T ) EL E V A T I O N ( F T ) STATION 355 360 355 360 1+75 2+00 2+25 2+50 2+75 3+00 3+25 -1 2 % 0%15%18% -1 8 % 0%17% 5% 0% 0%5% 5%0% 5%-0%-0% 15% 1% 17% 5% -1 4 % -0%18% -1 3 % -0% 6%0% 0%-1 8 % -0%19% -0%-1 5 % CONFLUENCE WITH MAIN CHANNEL CHANNEL CENTERLINE GROUND SURFACE TRIBUTARY RIFFLE COBBLE/GRAVEL MIX MIN 0.75' DEPTH RIPRAP OUTFALL CALTRANS CLASS I TRIBUTARY CULVERT INVERT = 355.5'PROJECT #31137 DRAWN BY: CHECKED BY: ORIGINAL DRAWING SIZE: 22 X 34 GMMR, LLC MITIGATION PLAN DANVILLE, CALIFORNIA Date Issues And Revisions No. Sheet PERMIT SET06/28/22 2169-G East Francisco Blvd. San Rafael, CA 94901 (415) 454-8868 Phone (415) 454-0129 Fax MAIN CHANNEL PROFILE1 CHANNEL PROFILES 2 SCALE: AS INDICATED SCALE: 1 " = 10' 0 10 SCALE: 1 " = 2' 0 2 HORIZONTAL: VERTICAL: AS,DG BB TRIBUTARY CHANNEL PROFILE2 PROPERTY BOUNDARY EXISTING CONTOUR PROPOSED CONTOUR FLOODPLAIN WETLAND PLANTING AND SEEDING AREA (2,553 SF) FLOODPLAIN SEEDING AREA (3,176 SF) IN-CHANNEL WETLAND PLANTING AREA (1,300 SF) UPLAND SEEDING AREA (4,043 SF) WILLOW STAKE OAK PLANTING 100 100 PLANTING LEGEND WETLAND PLANT PLANTING DETAIL NOT TO SCALE NOTE: USE SPADE OR TROWEL TO DIG HOLE BY HAND SMALL CONTAINER PLANT TO BE CENTERED IN PIT WITH ROOTCROWN AT GRADE BACKFILL WITH NATIVE SOIL AND HANDTAMP INTO PLACE PLANTING PIT LARGE ENOUGH TO PREVENT "J" ROOTING. 2" MIN. SPACING FROM ROOTBALL ON SIDES AND BOTTOM OF PLANTING PIT FINISH GRADE SECTION 2 WILLOW STAKE PLANTING DETAIL NOT TO SCALE SECTION 3 1' MAX ABOVE GROUND 3' MIN BELOW GROUND Xref .\A-FP- LEVEL 1-DC.dwg 3 5 3 352 355.5 351 3 5 5 355.25355.5 355 354.7 5 355.25355.5 354 . 2 5 35 4 . 5 351 . 7 5 352 353.25353.5 3 5 1 . 2 5 3 5 1 . 5 350 . 2 5 35 0 . 5 355 354 354 356 356 357 357 358 35 2 35 3 35 4 355 351 3 5 3 3 5 0 356 35 6 3 5 7 357 35 5 35 6 DSDS DS 2 8 ' 20 ' 28'60 ' 55' 20' WILLOW STAKES, TYPIN-CHANNEL WETLAND PLANTING AREA, TYP WETLAND PLANTING AND SEEDING AREA, TYP UPLAND SEEDING AREA, TYP FLOODPLAIN SEEDING AREA, TYP WOODEN FENCE, TYP PROJECT #31137 DRAWN BY: CHECKED BY: ORIGINAL DRAWING SIZE: 22 X 34 GMMR, LLC MITIGATION PLAN DANVILLE, CALIFORNIA Date Issues And Revisions No. Sheet PERMIT SET06/28/22 2169-G East Francisco Blvd. San Rafael, CA 94901 (415) 454-8868 Phone (415) 454-0129 Fax MITIGATION PLANTING PLAN 3 NSCALE: 1 " = 20 ' 0 20 PLANTING PLAN SCALE: 1"=20'1 DG BB SCALE: AS INDICATED