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HomeMy WebLinkAboutASRDRB20230824 5.2I DESIGN REVIEW BOARD STAFF REPORT 5e2 TO: Design Review Board Members August 24, 2023 SUBJECT: Review, approve and/or provide feedback on the architecture, color and material board, and landscape design for Development Plan request DEV22-0017 allowing for the construction of a new 7,631 square foot single family residence with an attached 569 square foot garage, and a 419 square foot JADU totaling 8,619 square feet located at 5 Ohlson Lane. PROTECT DESCRIPTION The project includes a Development Plan request (DEV22-0017) to review architectural elevations, material colors, and landscaping for the new 7,631 square foot residence with an attached 569 square foot subdivision19 square foot JADU located at 5 Ohlson Ln, which was created through the subdivision MS851-2011. Per the Conditions of Approval of MS851-2011 development of new homes on both parcels are subject to approval of a Development Plan application. The Conditions of Approval per the architecture of the home revolve around building mass, colors and materials, landscaping, and specified development activity for this specific lot. EVALUATION Architecture • The development criteria for the lots are consistent with R-65 Single -Family Residential Zoning District. • The residence is proposed to be 7,631 square feet with one attached 569 square foot two car garage and a 419 square foot JADU, totaling 8,619 square feet. • The architectural style is modern with colors and materials that are similar to others the Design Review Board has approved in the past. • Staff has worked with the applicant to change the body color from white to a more subdued dark gray stucco with vertical wood siding, black aluminum window trim, and a white TPO roof. Landscape • Trees to be planted are Coast Live Oak in 36" box, Western Redbud in 36" and 24" boxes, Strawberry Tree in 24" box, Dr Hurd Manzanita are 5-Gal and 15-Gal, Coffee Berry are 5-Gal, Atlas Fescue are 1-Gal, and Berkeley Sedge are 1-Gal. • The landscape treatment is somewhat consistent with the design of other approved landscape treatments in the area. Staff recommends staggering the oak trees in a more natural pattern and planting Pepper Trees instead of Strawberry Trees. RECOMMENDATION Further discuss the architectural Conditions of Approval per subdivision MS851-2011. Per the subdivision MS851-2011: 3a. "Building Mass: The design of the primary residence shall minimize the perception of excessive bulk. Structures constructed on slopes shall utilize stepped foundations. Architecture shall include sufficient variation to avoid large flat wall areas and to create shade and shadow. Two-story vertical walls and long, uninterrupted roof ridgelines shall be avoided. " The Planning Department does not believe that the current architecture of the home meets the Conditions of Approval of having a true stepped foundation to minimize the perception of excessive bulk. The proposed residence includes -8 foot pillars to support the structure above the slope, increasing the perception of building mass. Prepared by: Yajaira Duran Planning Technician Attachment: Project Plans 5 Ohlson Lane - Development Plan 2 August 24, 2023 PROJECT TEAM 5 OFFICIAL USE ONLY Description Date OWNERS ARBORIST CONTACT: NAVEEN & USMAN RAO TREE MANAGEMENT EXPERTS EMAIL: naveen.rao@gmail.com 3109 SACRAMENTO ST, PHONE: 408.314.5842 SAN FRANCISCO, CA 94115 CONTACT: ROY LEGGITT ARCHITECT EMAIL: roy@treemanagementexperts.com M DESIGNS ARCHITECTS PHONE: 415.606.3610 4131 W. EL CAMINO REAL, STE 200 PALO ALTO, CA 94306 GEOTECHNICAL SERVICE ARCHITECT: MALIKA JUNAID AMERICAN SOIL TESTING & ENGINEERING CONTACT: ZHENGRUI HE 1141 RINGWOOD COURT, #130, PHONE: 650.565.9036 SAN JOSE, CA 95131 - FAX: 949.625.7869 CONTACT: BRUCE EMAM EMAIL: zhengrui@mdesignsarchitects.com; EMAIL: bruce@americansoiltesting.com PHONE: 408.559.6400 SURVEYOR a y DEBOLT CIVIL ENGINEERING LANDSCAPE ARCHITECT 66 480 SAN RAMON VALLEY BLVD #L, DHD DESIGN fr DANVILLE, CA 94526 633 QUARRY RD. SUITE A, CONTACT: EASTON C. MCALLISTER SAN CARLOS, CA 94070 EMAIL: office@deboltcivil.com CONTACT: DAMIR HURDICH PHONE: 925.837.3780 EMAIL: damir@dhdsf.com PHONE: 415.786.6427 CIVIL ENGINEER DEBOLT CIVIL ENGINEERING 480 SAN RAMON VALLEY BLVD #L, DANVILLE, CA 94526 CONTACT: EASTON C. MCALLISTER M DESIGNS ARCHITECTS RAO RESIDENCE EMAIL: office@deboltcivil.com 4131 WEST EL CAMINO REAL, SUITE PHONE: 925.837.3780 200, PALO ALTO CA 94306 www.mdesignsarchitects.com Email: info@mdesignsarchitects.com 5 OHLSON LN 51 Phone: 650-565-9036 PROJECT DATA TABLES 6 BASE FLOOR KEY PLAN 7 Fax: 949-625-7869 PROJECT DATA TABLE DANVILLE, CA 94526 SE� AR Cy� ZONING �v\v ZONING R-65 APN 200-220-020 FLOOR ZONE N/A * C 32842 PUBLIC R.O.W. N/A CPS ��Noi�oe.25 ]A-( CONFORMITY N/A -9�� RENEWAL ^� DATE �t LOT SIZE 65,910 SF OF CA\-\ � SCOPE OF WORK NEW CONSTRUCTION - 2.5 STORY SINGLE FAMILY HOUSE LOT AREA SUMMARY DESCRIPTION EXISTING PROPOSED TOTAL ALLOWED BF2 FLOOR AREA N/A 8,619 8,619 N/A FLOOR AREA SUMMARY BF1 DESCRIPTION EXISTING PROPOSED TOTAL ALLOWED BASEMENT N/A 872 872 N/A 1ST FLOOR N/A 3904 3904 N/A N GARAGE N/A 569 569 N/A FAR LEGEND w u 2ND FLOOR N/A 2,855 2,855 N/A N CU Z BASEMENT (COUNTED) � JADU N/A 419 419 500 z z J HEIGHT SUMMARY 0 z r< DESCRIPTION EXISTING PROPOSED TOTAL ALLOWED ��� O v MAIN HOUSE N/A 35'-0" 35'-0" 35'-0" U) V ) PARCEL MAP 1 SHEET INDEX 3 SETBACK SUMMARY 1ST FLOOR KEY PLAN 8 w J J ARCH 23 L1.2 PLANTING DETAILS DESCRIPTION EXISTING PROPOSED TOTAL ALLOWED J ' _ RANCHO EL RIO,. Paz -.a 1 A0.01 TITLE SHEET 24 L2.1 HYDROZONE PLAN FRONT N/A 30' 30' MIN. 25' O O 109P.M.24-26 1- s-214P.M.21 2 A0.02 SITE PHOTOGRAPHS 25 L3.1 IRRIGATION PLAN ' REAR N/A 100'-5" 100'-5" MIN. 30' u , 3 A0.03 MATERIAL BOARD 26 L3.2 IRRIGATION DETAILS ^ a' Q' 4 A0.05 LIGHTING FIXTURES 27 L3.3 IRRIGATION DETAILS RIGHT N/A 48'-1" 48'-1" MIN. 20' FF3 Q SPRING LANE s t"•,t00' 5 A0.08 (P) FLOOR AREA DIAGRAMS LEFT N/A 21' 21' MIN. 20' Q --------------------------------------------- x `I 6 A1.02 (P) SITE PLAN PARKING SUMMARY FF1 G1 S =»a \ 7 A1.04 (P) BASE FLOOR PLAN M a 8 A1.06 (P) 1ST FLOOR PLAN DESCRIPTION EXISTING PROPOSED TOTAL ALLOWED :oo3k .6 t� z O 4, 9 A1.07 (P) 2ND FLOOR PLAN ENCLOSED N/A 2 2 MIN 2 10 A1.12 (P) ROOF PLAN FF4 11 A2.01 (P) NORTH & SOUTHWEST ELEVATIONS OPEN OR CARPORT N/A 9 9 MIN 1 12 A2.02 (P) EAST & SOUTHEAST ELEVATIONS EV CHARGER N/A 2 2 N/A FF5 z - - - - ,1<1 ",.,. ° - - - - - - V Gy 13 A3.01 (P) A -A & B-B SECTIONS 6 1 ?Ij32 14 A3.02 (P) C-C & D-D SECTIONS FF7 CIVIL h tr'y, ,�s � 1 , ,3-,P�" OHLSON 11LN °°°` 15 CE-1 COVER SHEET 16 CE-2 EXISTING CONDITIONS 17 CE-3 PRELIMINARY GRADING PLAN - RESIDENCE FAR LEGEND F n 23 -`-0 18 CE-4 PRELIMINARY GRADING PLAN - DRIVEWAY 19 CE-5 EROSION CONTROL PLAN W b FIRST FLOOR JAD n 20 CE-6 PRELIMINARY STORM WATER CONTROL v I SITE 0 Mee PLAN , Igif: i"5 YM SAS PRFPIgD 1pi ISSfi4EN1 P1pP035 D111-Np luaDv 6ASA.ED GARAGE (COUNTED) N W THE CY S DP LOTw M ASSESSOR'S MAP ❑ JAD U MIK. ED WK M..uY550R5 PN ' '�" O'aR9tE LaROxwlc°fi �LIl BOOK 200 PAGE 2 LANDSCAPE IK5511 .ia CONTRA COSTA COUNTY, 21 L0.1 LANDSCAPE PLAN ui 22 L1.1 PLANTING PLAN 0 I..L VICINITY MAP 2 CODE COMPLIANCE 4 2ND FLOOR KEY PLAN 9 CD U) APPLICABLE CODES CODE SUMMARY z W 2022 CALIFORNIA BUILDING CODE OCCUPANCY: R3/U J " 2022 CALIFORNIA GREEN BUILDING STANDARDS CODE TYPE OF CONSTRUCTION: V-B Z 2022 CALIFORNIA ELECTRICAL CODE FIRE SUPPRESSION: SPRINKLED 2022 CALIFORNIA MECHANICAL CODE OCCUPANCY SEPARATION: 1-HOUR z 2022 CALIFORNIA PLUMBING CODE HEIGHT MAXIMUM: 35'-0" 2022 CALIFORNIA FIRE CODE 2022 CALIFORNIA ENERGY CODE J 2022 CALIFORNIA RESIDENTIAL CODE SF1 DEFERRED SUBMITTALS POOL SF2 S SF5 2023.07.28 R SITE SF7 o _ �a oy°tiN FAR LEGEND P SECOND FLOOR 117 AO.01 co N C7 N N 1, *0 � W111 air- Mm" VA ­N" V af ll�` to qw 'A 11w; W, 0 M M-P 71 ry 7 N'r, P, WOO' MW z_j WPM" ":,- _. I I I oma .rv- ............ VM ro WZ4 �iA 211 om. A' I's -WL, WIlf 71 JI 77!"7, Al e"m Fv �-,: M;7 -N AN 4b"- ­. it. 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LANDSCAPE DIRECTIONAL WELL LIGHT LANDSCAPE RECESSED STEP/PATH LIGHT MATTE BRONZE FINISH 4" WIDE, 4" HIGH BLACK FINISH 12" WIDE J v J 2023.07.28 1 AO.05 M N V LANDSCAPE LIGHTING FIXTURE M N O N N Description Date FAR LEGEND ❑ BASEMENT (COUNTED) FAR LEGEND =1RST FLOOR GARAGE (COUNTED) JADU A h y M DESIGNS ARCHITECTS 4131 WEST EL CAMINO REAL, SUITE 200, PALO ALTO CA 94306 www.mdesignsarchitects.com Email: info@mdesignsarchitects.com Phone: 650-565-9036 Fax: 949-625-7869 AR cy\ \v K A Ui[i TF v 'Z-32842 i AI, n✓��-� i . 082501.. RAL DE1 N N W Z ^� U � Z J (P) BASEMENT FLOOR AREA SCALE: 1 /16" = 1'-0" 1 P FIRST FLOOR AREA SCALE: 1 /16" = 1'-0" 2 w Z Q 0' 8' 16' 32' 64' 0' 8' 16' 32' 64' O w J w J 0 u > (P) MAXIMUM FLOOR AREA Q Lo z NO. WIDTH LENGTH AREA Q p BASEMENT(COUNTED) FAR LEGEND 4 TO BELOW BF1 18' - 11" 18' - 0" 341 SF BF2 28' - 1" 18' - 11" 531 SF 1-Y&A ial FIRST FLOOR FF1 69' - 7" 22' - 5" 1559 SF FF2 15'-3" 9'-10" 150SF FF3 4'-10" 1'-7" 8SF FF4 11' - 6" 3' - 11" 45 SF FF5 29'-9" 20'-9" 617SF FF6 34' - 6" 10' - 1" 347 SF FF7 19' - 4" 19' - 1" 370 SF FF8 37' - 2" 19' - 1" 709 SF FF9 17'-4" 5'-9" 100SF 3904 SF GARAGE (COUNTED) G1 25' - 2" 22' - 8" 569 SF 569 SF JADU JADU 44'-6" 9'-5" 419SF 419 SF SECOND FLOOR SF1 28' - 1" 17' - 1" 481 SF SF2 39' - 8" 17' - 4" 687 SF SF3 19'-2" 8'-0" 153SF SF4 9'-6" 5'-5" 51 SF SF5 4'-8" 4'-2" 19SF SF6 14'-3" 9'-2" 131 SF SF7 52' - 8" 25' - 4" 1333 SF M FA TOTAL 2855 SF 8619 SF W Q V rry V Uuj p ^Q^ I..L Q V Z Q Z Z 0 Q p ^J I..L J H ,A 2023.07.28 W-1 7 (P) SECOND FLOOR AREA SCALE: 1 /16" = 1'-0" 3 AO-08 co v N V co N CD N Description Date TREE SCHEDULE TREE NO. SPECIES DBH CONDITION DISPOSITION LEGEND — PROPERTY LINES 20 BLUE OAK 16.4 FAIR REMOVE SETBACK LINES 21 BLUE OAK 17.6 FAIR REMOVE BASEMENT OUTLINE 93 OREGON WHITE... 21.1 GOOD RETAIN 1ST FLOOR OUTLINE 2ND FLOOR OUTLINE 94 OREGON WHITE 20.4 GOOD RETAIN E E E E ELEC. LINE GAS LINE 95 OREGON WHITE 20.4 GOOD RETAIN SS SS SS SANITARY SEWER LINE WATER LINE - OREGON WHITE ^ ^ FENCE LINE 96 OAK 24.1 GOOD RETAIN —X " " " TREE PROTECTION LINE 97 ARIZONA... 18.3 POOR RETAIN a x 98 ARIZONA... 17.8 POOR RETAIN f' 99 ALEPPO PINE 26 VERY POOR REMOVE f M DESIGNS ARCHITECTS 4131 WEST EL CAMINO REAL, SUITE 200, PALO ALTO CA 94306 www.mdesignsarchitects.com Email: info@mdesignsarchitects.com Phone: 650-565-9036 Fax: 949-625-7869 TRASH & RECYCLING ENCLOSURE SEA ARC,y — — — — - -- - _ PROPERTY LINE. - ir —� — -- — — — — -LLJ� - — — I in r, n✓� , ar - � N LL ~ - - - - - - - - - - - - - - - w N LL `9� RENEWAL —TB N J DATE -- -- - -- -- -- - -- - w w -- DN 0 z �- (P ) REAR SET BACK ROOF 529 1 3/8 GARDEN � � i II I w 529' o" a 30' - 01, O 1ST FLR ROOF TILE DECK GARAGE ROOF O a O — -o)TO�— REQ. REAR SET BACK (E) TREE REMOVED DN C� I WN D 508- 0 2ND ROOF V Z LAWN � 540' - 5 3/8" �� L — -- — — — Z EASEME T FIRE ACCESS w BASE FF: 507'-0" P DSCAPE WELL LIGHT I O - - - - - - - - - - - _ _ ---__- _ _ _ _ _ __ _ _ _ _ _ __ - 1STFF:516'-0" ° w J w I P 2ND FF: 529'-0" LANDSCAPE WELL LIGHT I � 538' - 5 3/8" P)1 MAIL BO L.L O� I I I 0 0- _ O Q�z O (E) TREE TO E REMOVEd Q _ 2ND FLR DECK '�, � 21 o O 0 O \ ° ° 2ND ROOF - 5 3/8° � �� � � o o \ o, i \ /1 0, X O'. Q' I '0�ti CONCR D E Y o,, \0 p \ O mac% \ . v v W A \VA\\V p, ——-0 01 —— m w \ \ 10,, 98 97 Z U) 0 96 °'' 190� <ti m SETBACK LINES w W o _ N U) — — — — — — Lu PROPERTY LINE — _ -- ----— Z J 2023.07.28 N o_ 0 A1.02 91-- N V M (P) SITE PLAN SCALE: 1/16" = V-011 1 N 0' 8' 16' 32' 64' Description Date - - A2.01 a 1 ff" fr , M DESIGNS ARCHITECTS 4131 WEST EL CAMINO REAL, SUITE 200, PALO ALTO CA 94306 www.mdesignsarchitects.com Email: info@mdesignsarchitects.com 1 Phone: 650-565-9036 Fax: 949-625-7869 V-01 AR�h, A3.02 ' O ✓ J * -32842 (p A. n✓J,. al OO 0NEW AL DATE 2� \ K °F 1 A2.02 0 OUTDOOR Q WOOD PATIO 0ui ���% C� 505' - 0" U z �Q W z 0U h ELE. ✓ 0 (%) W J W MECH. 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Mill �� Ilk UJ a —4-0 M ilk's IRL-01 LCMJ -,-Wo W-9 0 All, 'a m :44 DN Qnl I-rL-llAlM:Q-r CA M:X/A-rinKl I I � 1544U-1.4 I I Description '- • 1 1 I■■ ■I II ■■I NAM2. oil• y rm 5AP I'j E 11IT Hi � ��� 1 • I • • • • • .r • `a SCALE 1 1 • ' 11 IF JOIN SL Lot or • •� . 1 �K *.vi _ _ . Ali _ i �• � � :`•N •:� �• •�� .I '. •. �►_ ` �- -Fig w�•� • - 1� s' 1 ! r •� 1 �/ �. •. _- ����.M-I-may_.. __ �� _ _ —.., gill - - - - - - - ��ol ��.�' � 1 � • ' RIP fR y �� �fli �� ■I ■ �' • • oil ­nA ■ 0.41 i i . y - ''\• - .yam ( V 1 �` - --__ _-_ _ -_ _ .. .. - _ _ 't- • 1 1 • , Description Date P G D C B A O WOOD LOOK LONGBOARD SIDING STUCCO PAINTED DARK GREY ANTI -REFLECTIVE GLASS ROOF y 540' - 6" j = 2ND PL E z 539' - 0" .LC W.LC J W o U - J ROOF DECK M z 2ND FLR -71/2" 17'-41/ 1/2" 1ST PLC - E M DESIGNS ARCHITECTS WEST EL CAMINO REAL, SUITE 5 4131 200, PALO ALTO CA 94306 GARAGE KIT FAMILY OUTDOOR PATIO w www.mdesignsarchitects.com 0 _j Email: info@mdesignsarchitects.com Phone: 650-565-9036 co Fax: 949-625-7869 1ST FLR 516'-0" z BASE PL E 514'-6" w U o� ~ Z W 2 c BASE FLR ANTI -REFLECTIVE GLASS m 505' - 0" BLACK ALUMINUM WINDOW W N C) L0 Z z W J (P) SECTION A -A SCALE: 1/8" = V-011 1 o z Q 0' 4' 8' 16' 32' — O U U) W J W N OM A3 02 OL OK OJ I H OFE = J WOOD LOOK LONGBOARD TEMPERED ANTI -REFLECTIVE Q Lo Z SIDING GLASS GUARDRAIL Q 0 _ ROOF � 540' - 6" � = 2ND PL E _f Z 539 - 0 BED 1 BED TH M. BED _ O J o U ET,' R OF DECK �; Z 2ND FLR — — — ,-0„ 6' - 11" o = 1ST PL E o � HAL AY z 528' - 0" G SE LIVING DI 4ING FAMILY - J o U ,BATH E 4 n o W Z n O o n J O 1ST 516 F 0" U MEC RO BASE PL�r� U ui z 514U) J_ W Z BASE FLR_AL W �, z 505' 0" ANTI -REFLECTIVE GLASS BLACK ALUMINUM WINDOW STUCCO PAINTED DARK GREY m Z 06 Z Q J Q Q_ 2023.07.28 o_ co A3.01 N V co '�6 (P) SECTION B-B SCALE: 1 /8" = V-011 2CD 0' 4' 8' 16' 32' rl- Description Date 6 5 A3 01 4 3 2 1 544 543 542 541 ROOF I� ~ 540 J r — — — — — — — 540' 6" 539 538 IIII ■ L IIII 2ND PL E 537 536 IIII ■ II 539' - 0" 534 I BED 2 i 532531 I 530 DECK 2ND �FLR 528 — — — — — — — — — - o V 527 1S79.qATn" E 526 I II ■II III ' - 525 524 1 II ■ ■II I II III 523 1 II III a ■ II I II III 522 II 1 III A ■11 I mill III I III I III M DESIGNS ARCHITECTS II BED 3 II III �" I ■II II ■IIIII III III II III 5521 20 4131 WEST EL CAMINO REAL, SUITE 1 1 [ I ■11 I mill III I III I III 519 1 III III` I ■ II II milli I I II III 200, PALO ALTO CA 94306 518 11 11-1111 I ■11 I ■II I I III HIGHEST GRADE: 516' 517 II II IIII I ■II II ■II I II III www.mdesignsarchitects.com 16 _ _ _ _ — — 1 ST FLR Email: info@mdesignsarchitects.com 515 516' 0" Phone:650-565-9036 513 BASE P L E Fax: 949-625-7869 5512 11 I I I I I I I 514'-6" 5510 09 550 07506 5LR T —� lam- ��� T BA5 5 F 0" 503502 I I I I I I �I II II II 501500 II II 498 LOWEST PAD POINT: 495' 497 495495 r 494 / 493 492 / IJ 491 /Lj AVERAGE PAD ELEVATION: (495' + 516') / 2 = 505.5' BUILDING HEIGHT: 540.5' - 505.5' = 35' CO W N U - Ln z z W J (P) SECTION C-C SCALE: 1/8" = V-0" 1 o z Q 0' 2' 4' 8' 1 6' — O U U) W J W J 00> Q Lo z O A B C D G op Q 0 544 543 542 541 ROO F 540 5 40'- 6" 539 538 2ND PL E 537 536 �! n 539' - 0535 534 533 532 e 531 ROOF DECK III I II 1 539 52�7 ui z 2ND FLR U) 8 ' - 0„ 52I � ■ ■ ■I 1 ST PL E O 525 11 ■ ■ 528' - 0" V _ 524 523 I ■ II II I ■ II ■ ■ 521 PATIO FAMILY ROOM KITCHEN GARAGE I U 520 i v W 518 HIGHEST G�ADE: 516 Q 5 17 1ST FLR 515 516'- t�� 0 513 II BASE PL E V 511 / 514'-6" z 510 508 ■ 507 PAD GRADE %03' 506 505504 a 503502 501 500 499 497 497 496 495 494 493 492 491 2023.07.28 o_ A3.02 0 N V co (P) SECTION D-D SCALE: 1 /8" = V-0" 2CA 0' 2' 4' 8' 1 6' N r U z w c� a 0 z N w w 0 z a w w z 0 z w w r m 0 w a N 0 z a 0 w w z 0 z 0 U M (N z 0 U 0 0 z 0 z a r a z J w a w a z a J a J J Q GENERAL NOTES 1. TOPOGRAPHIC INFORMATION PROVIDED BYTF-E OVMNER 2. CONTRACTOR ASSUMES SOLE AND COMPLETE RESPONSIBILITY FOR THE SITE CONDITIONS AND SHALL HOLD THE OWNER AND ENGINEER HARMLESS FROM ANY REAL OR ALLEGED LIABILITIES EXCEPT THOSE ARISING FROM THE SOLE NEGLIGENCE OF THE OAtER OR ENGINEER 3. CONTRACTOR SHALL NOTIFY DEBOLT CIVIL ENGINEERING TWO WORKI NG DAYS I N ADVANCE OF COMMENCEMENT OF CONSTRUCTION FOR CONSTRUCTION STARS. 4. SHOULD IT APPEAR THAT THE WORK TO BE DONE, OR ANY MATTER RELATIVE THERETO, IS NOT SUFFI CI ENTLY DETAI LED OR EXPLAINED ON THESE PLANS, THE CONTRACTOR SHALL CONTACT DEBOLT GVI L ENGI NEERI NG AT 9251837-3780 FOR SUCH FURTHER EXPLANATIONS AS MAY BE NECESSARY. 5. CONTRACTOR SHALL NOTI FY UNDERGROUND SERVICE ALERT 800/227-2600 72 HOURS PRIOR TO ANY EXCAVATI ON. THE USA AUTHORIZATION NUMBER SHALL BE KEPT AT THE JOB SITE 6. ALL REVISIONS TO THIS PLAN MUST BE APPROVED BY THE TOV\N OF DANVILLE PRIORTO CONSTRUCTION. 7. CONTRACTOR TO FOLLOW RECOMMENDATIONS FROM SOILS REPORT. 8. ALL TREES SHALL REMAIN EXCEPT FOR THOSE SHOWN ON THE IMPROVEMENT PLAN TO BE REMOVED. ALL TREES CONFLICTING WTH GRADING, UTILITIES, OR OTHER IIPROVEMEWS, OR OVERHANGING THE SIDEWALK OR PAVEMENT SO AS TO FORM A NUISANCE OR HAZARD, SHALL BE TRIMMED AND PROPERLY GRADED AND SEALED. AN ARBORIST SHALL BE PRESET FORANY CONSTRUCTION WORK NEAR OR UNDER THE TREES DRI PLI NE. TREE REMOVAL SHALL BE ALLOWED ONLY UPON PRIOR WRITTEN APPROVAL FROM THE PLANNING DIVISION. 9. CONTRACTOR TO USE CARE IN THE VICINITY OF EXISTING TREES TO REMAIN. ATEJVPORARY FENCE SHOULD BE INSTALLED AROUND TREE FOR PROTECTION. CONTRACTORTO FOLLOW ARBORISTS RECOMMENDATION. 10. IN THE EVENT THAT SUBSURFACE ARCHAEOLOGICAL REMAINS ARE DISCOVERED DURING ANY CONSTRUCTION OR PRE -CONSTRUCTION ACTIVITIES ON THE SITE, ALL LANDALTERATION WORK WTHIN 30.5 METERS (100 FEET) OF THE FIND SHALL BE HALTED, THE TOV\ N PLANNING DIVISION NOTIFIED, AND A PROFESSIONAL ARCHAEOLOGIST, CERTIFIED BY THE SOCIETY OF CALIFORNIA ARCHAEOLOGY AND/OR THE SOCIETY OF PROFFESSI ONAL ARCHAEOLOGY, SHALL BE NOTIFIED. SITE WORK IN THIS AREA SHALL NOT OCCUR UNTIL THE ARCHAEOLOGIST HAS HADAN OPPORTUNITY TO EVALUATE THE SIGNIFICANCE OF THE FIND AND OUTU ICE APPROPRIATE MITIGATION MEASURES, IF THEY ARE DEEMED NECESSARY. I F PREHI STORIC ARCHAEOLOG ICAL DEPOSITS ARE DISCVERED DURI NG DEVELOPMENT OF THE SITE, LOCAL NATIVE AIVERICAN ORGANIZATIONS SHALL BE CONSULTED AND INVOLVED IN MAKING RESOURCE MANAG EVENT DECISIONS. 11. CONSTRUCTION ACTIVITY SHALL BE RESTRICTED TO THE PERIOD BETWEEN THE WEEKDAY HOURS OF 7:30 A M. TO 5:30 P. M. (MONDAYS THROUGH FRI DAYS), UNLESS OTHER VISE APPROVED I N VVRITI NG BY THE CITY ENGI NEER FOR GENERAL CONSTRUCTION ACTIVITY AND THE CHI EF BUILDING OFFICIAL FOR BUILDING CONSTRUCTION ACTIVITY. PRIOR TO ANY CONSTRUCTION WORK ON THE SITE, INCLUDING GRADING, THE CONTRACTOR SHALL INSTALL A MINIMUM 3'X3 SIGN AT THE PROJECT ENTRY WHICH SPECIFIES THE ALLOWABLE CONSTRUCTION WORK DAYS AND HOURS, AND LISTS THE NAME AND CONTACT PERSON FOR THE OVERALL PROJECT M4 ACER AND ALL CONTRACTORS AND SUB -CONTRACTORS WORKING ON THE JOB. 12. THE CONTRACTOR SHALL PROVIDE SECURITY FENCING, TO THE SATISFACTION OF THE CITY ENGINEER ANIVOR THE CHIEF BUILDING OFFICIAL, AROUND THE SITE DURING CONSTRUCTION OF THE PROJECT. 13. THE CONTRACTOR AND SUBCONTRACTORS TO FIT ALL INTERNALCCMBUSION ENGINES WTH MUFFLERS WHICH ARE IN GOOD CONDITION, AND TO LOCATE STATIONARY NOISE -GENERATING EQUIPMENT AS FARAWAY FROM EXISTING RESIDENCES AS FEASIBLE. WARMING OF CONSTRUCTION EQUIPMENT AND/OR SERVICING SUCH EQUIPMENT SHALL CXOUR ONLY WTHIN THE AUTHORIZED WORK PERIODS. 14. A WATERING PROGRAM WHICH INCORPORATES THE USE OF A DUST SUPPRESSANN T, AINDWHICH COMPLIES WITH REGULATION 2 OF THE BAY AREA AI R QUALITY MANAGEMENT DISTRICT SHALL BE ESTABLISHED AND IMPLEMENTED FOR ALL ON AND OFF -SITE CONSTRUCTION ACTIVITIES. EQUIPMENT AND HUMAN RESOURCES FOR WATER NG ALL EXPOSED OR DISTURBED SOIL SURFACES SHALL BE SUPPLI ED ON WEEKENDS AND HOLI DAYS AS WELL AS WORK DAYS. DUST -PRODUCING ACTIVITIES SHALL BE DISCONTINUED DURING HIGH WND PERIODS. 15. ANY GRADING ON ADJACENT PROPERTIES W LL REQUIRE PRIOR WRITTEN APPROVAL OF THOSE PROPERTY C\MNERS AFFECTED. 16. AT LEAST ONE WEEK PRIOR TO COMMENCEMENT OF GRADING, THE CONTRACTOR SHALL POST THE SITE AND MAIL TO THE OWNERS OF THE PROPERTY VUITHI N 300 FEET OF THE EXTERIOR BOUNDARY OF THE PROJECT SITE, TO THE HOMEOWNER ASSOCIATIONS OF NEARBY RESI DENTIAL PROJECTS AND TO THE TOA N OF DANV1 LLE DEVELOPMENT SERVICES DEPARTMENT, A NOTICE THAT CONSTRUCTION WORKWILL COMVENCE. THE NOTICE SHALL INCLUDE A LIST OF CONTRACT PERSONS WITH NAME, TITLE, PHONE NUIVBERANNDAREA CF 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 WTH AUTHORITY TO INITIATE CORRECTIVE ACTION INTHEIR AREA O= RESPONSIBILITY. THENAWESOF INDIVIDUALS RESPONSIBLE FOR DUST, NOISE AND LITTER CONTROL SHALL BE EXPRESSLY IDENTIFIED IN THE NCTICF. 17. ALL CUT SLOPES SHALL BE ROUNDED TO MEET EXISTI NG GRADES AND BLEND WTH SURROUNDING TOPOGRAPHY. ALL GRADED SLOPES OVER 1.5 METERS (FIVE FEET) IN H8GHT SHALL BE PLANTED WTH SUITABLE GROUND COVER 18. ALL EARTH SWALES SHALL BE 1 % MINIMUM SLOPES, AND 4% MAXIMUM SLOPES. 19. WHERE SOILS OR GEOLOGIC CONDITIONS ENCOUNTERED IN GRADING OPERATIONS ARE DIFFERENT FROM THAT ANTICIPATED IN THE SOILS REPORT, A REVISED SOILS REPORT SHALL BE SUBMITTED FOR REVIEW AND APPROVAL BY THE CITY ENGINEER IT SHALL BE ACOONPANI ED BY AN ENGINEERING AND GEOLOGICAL OPINION AS TO THE SAFETY OF THE SITE FROM SETTLEMENT AND SEISMIC ACTIVITY. 20. ALL DEVELOPMENT SHALL TAKE PLACE IN COMPLIANCE WTH THE TOWN EROSION CONTROL ORDINANCE (ORD. 91-25). RESTRICTIONS INCLUDE LIMITING CONSTRUCTION PRIMARILYTOTHE DRY MONTHS OF THE YEAR (MAY THROUGH OCTOBER) AND, IF CONSTRUCTION DOES OCCUR DURING THE RAINY SEASON, THE DEVLEOPER SHALL SUBMIT AN EROSION CONTROL PLAN TO THE CITY ENGINEER FOR REVIEWAND APPROVAL. THIS PLAN SHALL INCORPORATE EROSION CONTROL DEVICES SUCH AS THE USE OF SEDIMENT TRAPS, SILT FENCI NG, PAD BERMING AND OTHER TECHNIQUES TO MINIMIZE EROSION. COVER SHEET 21. ALL NEW DEVELOPMENT SHALL BE CONSISTENT WITH MODERN DESIGN FOR RESISTANCE TO SEISMIC FORCES. ALL NEW DEVELOPMENT SHALL BE IN ACCORDANCE WTHTF-E UNIFORM BUILDING CODE AND TOWN OF DANVILLE ORDINANCES. 22. ALL CUT AND FILL AREAS SHALL BE APPROPRIATELY DESIGNED TO MINIMIZE THE EFFECTS OF GROUND SHAKING AND SETTLEMENT. 23. STOCKPILES OF DEBRIS, SOIL, SAND OR OTHER MATERIALS THAT CAN BE BLOWN BY THE W ND SHALL BE COVERED. 24. IF TOXIC OR CONTAMINATED SOIL IS ENCOUNTERED DURING CONSTRUCTION, ALL CONSTRUCTION ACTIVITY IN THAT AREA SHALL CEASE UNTIL THE APPROPRIATE ACTCION 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 CONTAMI RATED SO L SHALL MEET ALLFEDERAL STATE AND LOCAL REGULATIONS. IF DEEMED APPROPRIATE BY THE HEALTH DEPARTMENT T, THE APPLICANT SHALL MAKE PROVISIONS FOR IMMEDIATE CONTAINMENT OF THE MATERIALS. RUNOFF FROM ANY CONTAMINATED SOIL SHALL NOT BE ALLOWED TO ENTERANY DRAINGE FACILITY, INLET OR CREEK 25. ALL GRADING ACTIVITY SHALL ADDRESS NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) CONCERNS. SPEGFIC MEASURES TO CONTROLSEDIIVENT RUNOFF, CONSTRUCTION POLLUTION AND OTHER POTENTIAL CONSTRUCTION CONTAMI NATION SHALL BE ADDRESSED THROUGH THE EROSION CONTROL PLAN (ECP) AND STORM WATER POLLUTION PREVENTION PLAN(SIN)PP). A NPDES CONSTRUCTION PERMIT MAYBE REQUIRED, AS DE B:4A NED BY THE CITY ENGINEER 26. THE CONTRACTOR SHALL OBTAIN AN ENCROACHIVENT PERMIT FROM THE ENGINEERING DIVISION PRIORTO COMMENCING ANY CONSTRUCTION ACTIVITIES WTHIN ANY PUBLIC RIGHT O=-WAYOR EASEMENT. 27. ALL MUD OR DIRT CARRIED OFF THE CONSTRUCTION SITTE ONTO ADJACENT STREETS SHALL BE SWEPT EACH DAY. WATER FLUSHING CF SITE DEBRIS OR SEDIMENT OR CONCRETE WASHING IS EXPRESSLY PROHIBITED 28. 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 CONTRACTOR. THIS SHALL INCLUDE LUDE SLURRY SEAL, OVERLAY OR STREET RECONSTRUCTION IF DEEMED WARRANTED BY THE CITY ENGINEER DRIVEWAYS, PAM NG AND UTI LITI ES, SHALL BE CONSTRUCTED IN ACCORDANCE VVITH APPROVED STANDARDS ANDVOR PLANS AND SHALL COMPLY V\ATH THE STANIDARID PLANS AND THE TOON CODE. 30. ALL NEW UTILITIES REQUIRED TO SERVE THE DEVELOPMENT SHALL BE INSTALLED UNDERGROUND. 31. LOCATION OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE CONTRAACTCRTO EXPOSE AND VIER FY. 32. ANY ON -SITE WELLS SHALL BE RESET TO FINISH GRADE IN ACCORDANCE WTH CONTRAOOSTA COUNTY HEALTH SERVICES DEPARTMENT-- ENVIRONMENTAL HEALTH DIVISION REGULATIONS. TOWN OF DANVILLE 5 OHLSON LANE CONTRA COSTA COUNTY SiTE]b OHLSON LANE TO 1-680 ABBREVIATIONS: BARD B 0l� E� �ERRo VICINITY MAP BLDG BUILDING CONC CONCRETE (E)/EX EXISTING ESMT EASEMENT FNC FENCE INV. INVERT P.U.E PRIVATE UTILITY EASEMENT REBAR. REBAR ( ) RECORD DATA R/W RIGHT OF WAY SSCO SANITARY SEWER CLEANOUT SSMH SANITARY SEWER MANHOLE SDDI STORM DRAIN DRAIN INLET (T) TOTAL WM WATER METER WV WATER VALVE EARTHWORK QUANTITIES ITEMS CUT CYS. FILL CYS. HOUSE PADS 115 95 DRIVEWAY I SIDEWALK 865 545 YARDS & HILLSIDE 840 1,180 TOTAL 1,820 1,820 PROJECT NET BALANCE: 0 CY (IMPORTIEXPORT) THESE ARE ESTIMATED VALUES FOR BONDING PURPOSES ONLY. CONTRACTOR SHALL PERFORM THEIR OWN ESTIMATE FOR THE PURPOSE OF CONSTRUCTION QUANTITIES. AREA OF LAND DISTURBANCE IS EASTON C Mo4LLISTER - PE 61148 / PLS 9583 CALIFORNIA RENEIVAL DATE: 12/31/24 (PE) 03/31/25 (P-S) 27,590± SF REVISIONS DATE N.T.S. LEGEND: O O SANITARY SEWER MANHOLE WATER VALVE FOUND MONUMENT AS NOTED STANDARD STREET MONUMENT EASEMENT LINE ADJACENT PROPERTY LINE BOUNDARY LINE TIE LINE CENTERLINE EXISTING WATER LINE EXISTING STORM DRAIN PIPE EXISTING ELECTRIC CABLE EXISTING SANITARY SEWER LINE EXISTING EDGE OF PAVEMENT EXISTING BUILDING EXISTING CURB AND GUTTER EXISTING TREE SHEET INDEX SHEET NO. DESCRIPTION CE 1 COVER SHEET CE 2 EXISTING CONDITIONS PLAN CE 3 PRELIMINARY GRADING PLAN - RESIDENCE CEO PRELIMI NARY GRADING PLAN - DRIVEWAY CE 5 EROSION CONTROL PLAN CEO PRELIMINARY STORM WATER CONTROL PLAN Dater DEBOLT 07/ 26✓ 23 + YEARS CIVIL ENGINEERING (925) 837-3780 1 OFFICE@DEBOLTCIVIL.COM 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 sce50 N .T.S By: EM Job No.: 22102 CE-1 r U z W c� a 0 Z W w 0 z a W W z z W W m 0 W a a N z a w Z U N N N W J Z z 0 U iY (N Z O U 0 0 z 0 z a r a z J W a W a V) Z a J a J J Q (2016— 069 123) OHLSON/TANG 2 5' � I Q)*) N S88'45'05"E 333.83' po — — — — — — — — — — c) INSTALL TREE PROTECTION FENCING I I EXISTING PA & UE EASEMENT TO BE QUITCLAIMED AND REPLACED WITH NEW ALIGNMENT EXISTING TREE J o _ — TO REMAIN, TYP. / I C> / to / P: 0)x / N PARCEL EXISTING TREE I (214—PM-21 l TO BE REMOVED I I / M CV rn 00 WI PARCEL "B" I\ aj N �I Cn ti1X (214—PM-21I w ) w z r 46 w J EXISTING TREE iw \ N w LliTO BE REMOVED g� E' �� C° o C o 0 o N z � Q o Op,,•pp, \ F--:o �F00 x� X - X \ w Z� 1' 0a EXISTING S.T.F.E. & P.S.D.E. TO BE QUITCLAIMED / Li 0 O Cq M w wm rn rn O N 00 \ 2p` �—�-- '6'F EXISTING TREE TO REMAIN, TYP.I \ \ \'266, R I S88' \ p� 30.0 1 \ 024.10'20" N88'35'20"W 509.92' INSTALL TREE PROTECTION FENCING PA RCEL "A " (159—PM— 13) I I GRAPHIC SCALE 20 0 10 20 40 I ( IN FEET ) 1 inch = 20 ft. Li Ci vi L M FYLNN (14369 O.R. 319) I _ I � I N I w I O O O Ln "Cn �ww I o� mJ CD J oF--C,= Ed 88 LnC/)00 Cn `'wow I llO �U Cnw�¢ uJ oMLn w `� Q m O z � w z O a- U I i5'20"E 59.04' °O OHLSON LANE N \ 0 N PARCEL "B" L - (159—PM— 13) F ow_ Ln 0:�co CN Li N � � Li x C o Q c0 ~ ~ _Cn Z m X Q w (n 0 O N o� <� zo w J 0:� ww Oa_ Cn Q w U � a� o J m Q ::D CD a- O I I # REVISIONS DATE DAa. DEBOLT 07/ 6/23 5 OHLSON LANEQEXISTING CONDITIONS 50+YEARS 1"= CIVIL ENGINEERING By: EASTCN C MC4LLIS7ER - PE 61148 / PLS 9583 E M RENEWAL DATE: 12/31/24 (PE) 03/31/25 (RLS) (925) 837-3780 1 OFFICE@DEBOLTCIVIL.COM Job No.: TOWN OF DANVILLE CONTRA COSTA COUNTY CALIFORNIA 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 22102 CE-2 r U z W U a U Z N W W z a w w z 0 z w w x r m 0 w a a N 0 z a 0 w z 0 w J Z Z O H U H N z 0 U O H O z 0 Z a r a z J W a w a Z a J a J J Q Z' I I 1 1 I 1 I pI N I 1 1 GRAPHIC SCALE 10 0 5 10 20 ( IN FEET ) 1 inch = 10 ft. PRELIMINARY GRADING PLAN " RESIDENCE TW 501.5 '11107i7�>�i� TW 508.5 BW 505.5 3' MAX. HEIGHT RETAINING WALL TW 501.5 BW 498.5 SDAD RIM 508.0 TW 501.5 - INV 505.5 BW 498.5 - TW 508.5 \ BW 505.5 TOWN OF DANVILLE BW 504.5 \ RIM 508.0 INV 505.8 S88'45'05"E 333.83' LOWER PAD ELEV 508.0 \ SDAD 3' MAX. HEIGHT RIM 508.0 RETAINING WALL \ INV 505.0 TW 508.5 BW 508.0 �. �. l�7. �. �. Jam. ►�. BW 516.0 BW 516.0 BW 517.5 BW 516.0 BW 521.0 ` SDAD SDAD TW 516. BW 515. RIM 514.8 F� RIM 508.0 \ INV 513.0 515.4 INV 506.3 FL 515.7 \ EP TW 516. 515.9 BW 512.0 O UPPER LEVEL FF 516.0 \ EP \ I \ 16.0 EP \ 515.4 SDAD GR 515.3 \ INV 512.0 SDAD GR 508.0 INV 505.5 SSCO RIM 508.0 �� TW 515.5 BW 505.5 INV 506.0 TW 501.5 -ram I I I I I I I I I 1 1 BW 497.5 IIIIIIIIIIIIIIIIIIIIIIIIIIIIJ -- TW 505.0 BW 504.5 TW501.5.................................................................................. ...... . TW 501.5 BW 498.0 BW 501.0 4' MAX. HEIGHT RETAINING WALL DISSIPATOR TRENCH INV 490.0 5 OHLSON LANE CONTRA COSTA COUNTY CALIFORNIA EASTON C Mo4LLISTER - PE 61148 / PLS 9583 RENEWAL DATE: 12/31/24 (PE) 03/31/25 (P-S) REFER TO ARCHITECTURAL PLANS FOR BUILDING AND FOUNDATION DESIGN 508.5 508.0 INV 498.0 N8835'20"W 509.92' BW 514.0 ivv viQ.v BW 512.0 BW 523.0 TW 522.5 BW 519.5 FL 515.9 TW 519.0 BW 516.0 516.0 BW 516.4 \� TW 520.0 BW 517.0 TW 519.0 BW 518.0 EP 517.5 EP 51 .5 TW 517.0 BW 512.0 T TW 502.0 . BW 501.5 TW 500.5 BW 498.0 # REVISIONS DATE Data. DEBOLT 07/ 26✓ 23 50 + YEARS "1" = 10' CIVIL ENGINEERING By: EM (925) 837-3780 1 OFFICE@DEBOLTCIVIL.COM Job No.: 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 22102 CE-3 r 0 z w 0 a z w w 0 z a w w z 0 z w w r m 0 w a N 0 z a 0 w 0 V) J z z 0 0 (N z 0 0 x 0 0 z 0 z a r ac a z J w a w a V) z a J a J J Q BW 516.0 BW 517.5 BW 516.0 BW 516.0 SDAD _ RIM 514.8 F� INV 513.0 515.4 �i SSCO RIM 508.0 INV 506.0 ......... ...\-- TW 501.5 /� BW 501.0 REFER TO ARCHITECTURAL PLANS FOR BUILDING AND FOUNDATION DESIGN UPPER LEVEL FF 516.0 515.4 SDAD GR 515.3 INV 512.0 TW ' 508.5 - BW 508.0 TW 505.0 BW 504.5 INV 498.0 BW 514.0 0 BW 521.0 FL 515.7 515.9 O 16.0 BW 523.0 TW 522.5 BW 519.5 FL 515.9 TW 519.0 BW 516.0 516.0 BW 516.4 BW 517.0 BW 518.0 EP TW 516.0 517.5 BW 512.0 EP 51 .5 TW 517.0 BW 512.0 526.0 FG 526.3 EP EP. EP 524.3 524.5 '' 524.3 :I �I :I EP I FG 0 CL 523.6 TW 524.0 523.0 ' , BW 523.5 W52T BW 520.5 FG CAD CL TW 524.0 520.0 520.2 BW 520.0 BW EP 519.0 I I BW 510.0 TW 509.5 BW 504.0 TW 502.0 ... . BW 501.5 TW 500.5 BW 498.0 N88'35'20"W 509.92' PRELIMINARY GRADING PLAN " DRIVEWAY TOWN OF DANVILLE 502.5 Z3601 e GRAPHIC SCALE 10 0 5 10 20 ( IN FEET ) 1 inch = 10 ft. • I \ 1 t JL V.V BW 518.0 1 \ TW 515.0f SAN RAMON VALLEY BW 512.5f FIRE PROTECTION DISTRICT TURN AROUND FCL \ 2.7 \ FG CAD CL \ 511.2 EP \ 511.0 BW 511.0 \ \ TW 510.5 BW 508.5 TW 511.5 \ \ \ TW 5 DISSIPATOR TRENCH GR 498.0 SDAD...................................' ; ; INV 496.0 RIM 504.0 INV 496.2 20 LF 8" SD - -- .. ... ... ..-.. -•ter• • - -- - Z� �b T � T BWi 511.0 \ BW 506.0 \ \ ... ............ ... I \ 4wT 509.0 I \ \ \ \ 505.0 I \ \ \ EP TW 508.0 \ 507.2 BW 502.0 i %ml vr...rr.rr. l Val vow +ow '40ha rr.rumv -~ SDCO RIM 501.5 INV 499.0 5 OHLSON LANE CONTRA COSTA COUNTY EAkSTON C Mo4LLISTER - PE 61148 / PLS 9583 CALIFORNIA RENEWAL DATE: 12/31/24 (PE) 03/31/25 (P-S) 506.2 TW 514.0 SDAD BW 511.0 RIM 50 .8 • ••••INV••4 .5•• / 506.0 / .acm. REVISIONS I 0 LO 00 FG @ CL + 502.Ot o N \ \ SDAD RIM 502.0 INV 500.3 DATE Date: DEBOLT 07/ 26✓ 23 50 + YEARS se. 101 CIVIL ENGINEERING By: EM (925) 837-3780 1 OFFICE@DEBOLTCIVIL.COM Job No.: 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 22102 CE-4 O z w 0 a 0 z W w 0 z a w w z 0 z w w m 0 w a a V1 0 z a 0 w 0 V) w z z 0 O M H (N z 0 O x O 0 z 0 z a r a z J w a w a V) z a J a J J Q EROSION CONTROL NOTES 1. THIS EROSION CONTROL PLAN REPRESENTS THE MINIMUM REQUIRED EFFORT TO PREVENT TRANSPORT OF SEDIMENTATION DURING CONSTRUCTION ACTIVITIES AND DOES NOT REPRESENT A COMPREHENSIVE SOLUTION TO ALL CONDITIONS. IT IS THE CONTRACTOR'S RESPONSIBILITY TO MAINTAIN ADEQUATE PROTECTION TO PREVENT EROSION AND ANY POTENTIAL DAMAGE CAUSED BY EROSION TO THE SITE, NEIGHBORING PROPERTIES OR THE REGIONAL STORM DRAINAGE SYSTEM. 2. THE EROSION CONTROL MEASURES ARE TO BE OPERABLE DURING THE RAINY SEASON, OCTOBER FIRST TO APRIL FIFTEENTH. EROSION CONTROL PLANTING IS TO BE COMPLETED BY OCTOBER FIRST. NO GRADING OR UTILITY TRENCHING SHALL OCCUR BETWEEN OCTOBER FIRST AND APRIL FIFTEENTH UNLESS AUTHORIZED BY THE DIRECTOR OF PUBLIC WORKS. 3. ALL EROSION CONTROL MEASURES SHALL BE MAINTAINED UNTIL DISTURBED AREAS ARE STABILIZED AND CHANGES TO THIS EROSION AND SEDIMENT CONTROL PLAN SHALL BE MADE TO MEET FIELD CONDITIONS ONLY WITH THE APPROVAL OF OR AT THE DIRECTION OF THE DIRECTOR OF PUBLIC WORKS. 4. DURING THE RAINY SEASON, ALL PAVED AREAS SHALL BE KEPT CLEAR OF EARTH MATERIAL AND DEBRIS. THE SITE SHALL BE MAINTAINED SO AS TO MINIMIZE SEDIMENT -LADEN RUNOFF TO ANY STORM DRAINAGE SYSTEM. 5. ALL EROSION CONTROL FACILITIES MUST BE INSPECTED AND REPAIRED AT THE END OF EACH WORKING DAY DURING THE RAINY SEASON. 6. A CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT ANY POINT OF EGRESS FROM THE SITE TO ROADWAY. A CONSTRUCTION ENTRANCE SHOULD BE COMPOSED OF COARSE DRAIN ROCK (3" MINIMUM DIAMETER) AT LEAST EIGHT INCHES THICK BY FIFTY (50) FEET LONG FOR THE FULL WIDTH AND SHALL BE MAINTAINED UNTIL THE SITE IS PAVED. 7. TEMPORARY EROSION CONTROL DEVICES WHICH INTERFERE WITH THE WORK SHALL BE RELOCATED OR MODIFIED ONLY WHEN THE GRADING INSPECTOR SO DIRECTS. 8. ALL LOOSE SOIL AND DEBRIS SHALL BE REMOVED FROM THE STREET AREAS UPON STARTING OPERATIONS AND REMOVED DAILY AND AS DIRECTED BY THE INSPECTOR. 9. AFTER SEWER LATERAL AND UTILITY TRENCHES ARE BACKFILLED AND COMPACTED, THE SURFACES OVER SUCH TRENCHES SHALL BE MOUNDED SLIGHTLY TO PREVENT CHANNELING OF WATER IN THE TRENCH AREA. CARE SHALL BE EXERCISED TO PROVIDE FOR CROSS FLOW AT FREQUENT INTERVALS WHERE TRENCHES ARE NOT ON THE CENTERLINE OF A CROWNED STREET. 10. EXCEPT AS OTHERWISE DIRECTED BY THE INSPECTOR, ALL DEVICES SHOWN SHALL ALL BE IN PLACE AT THE END OF EACH WORKING DAY WHEN THE FORECAST OF RAIN PROBABILITY EXCEEDS 40 % AND MAINTAINED DURING THE RAINY SEASON (OCTOBER 1 TO APRIL 15). 11. STRAW WATTLES AND SANDBAGS SHALL BE STOCKPILED AS SHOWN ON THE EROSION CONTROL PLAN READY TO BE PLACED IN POSITION WHEN RAIN FORECAST IS 40% OR WHEN DIRECTED BY THE INSPECTOR. 12. SANDBAGS REFERRED TO IN THE PRECEDING ITEMS MUST BE FULL. APPROVED SANDBAG FILL MATERIALS ARE SAND, DECOMPOSED GRANITE, AND/OR GRAVEL OR OTHER MATERIALS APPROVED BY THE INSPECTOR. 13. THE DOWNSTREAM STORM SYSTEM SHOULD BE INSPECTED TO VERIFY THAT THE SYSTEM IS CLEAR OF OBSTRUCTIONS AND FUNCTIONING PROPERLY. 14. AS PART OF THE EROSION CONTROL MEASURES, THE UNDERGROUND STORM DRAIN FACILITIES SHOULD BE INSTALLED COMPLETE AS SHOWN ON THESE PLANS. 15. THIS PLAN MAY NOT COVER ALL THE SITUATIONS THAT ARISE DURING CONSTRUCTION DUE TO UNANTICIPATED FIELD CONDITIONS. VARIATIONS MAY BE MADE TO THESE PLANS IN THE FIELD, SUBJECT TO APPROVAL OF THE CITY ENGINEER. 16. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE PROVISIONS OF THE ASSOCIATION OF BAY AREA GOVERNMENTS (ABAG) "MANUAL OF STANDARDS FOR EROSION AND SEDIMENT CONTROL." MEASURES ARE SUBJECT TO THE INSPECTION AND APPROVAL OF THE CITY ENGINEER. 17. BORROW AREAS AND TEMPORARY STOCKPILES SHALL BE PROTECTED WITH APPROPRIATE EROSION CONTROL MEASURES (SEEDED) TO THE SATISFACTION OF THE INSPECTOR. EROSION CONTROL PLAN TOWN OF DANVILLE 0 0 \ .... .................... I STOCKPILE SAND BAGS AND GRAPHIC SCALE STRAW WATTLE 30 0 15 30 60 I ( IN FEET ) 1 inch = 30 ft. INSTALL STRAW WATTLE FENCING, TYP. ENCIRCLE ALL STORM INLETS WITH CRUSHED ROCKS BETWEEN STRAW WATTLE. SEE DETAIL. . ................... CONSTRUCTION ENTRANCE LEGEND 000 STRAW WATTLE STRAW WATTLE / SILT FENCE O CRUSHED ROCK BETWEEN STRAW WATTLE CRUSHED ROCK BAGS BETWEEN STRAW WATTLES CONSTRUCTION ENTRANCE SEE STRAW WATTLE DETAIL THIS SHEET -CRIMP HAY ON EXPOSED SLOPES 4 " (100 MM)MAX. \\\\ 12" (300 MM) MIN. WOOD STAKE 19MM X 19MM MAX 1.2M (AFT ) SPACING SEDIMENT ROLL ENTRENCHMENT DETAIL IN SLOPE AREA N.T.S. SEDIMENT ROLL -\ FINISHED GRADE 3" i WOOD STAKE ENTRENCHMENT DETAIL IN FLAT AREAS STRAW WATTLE DETAILS_ 5 OHLSON LANE CONTRA COSTA COUNTY N.T.S. N.T.S. EASTON C Mo4LLISTER - PE 61148 / RLS 9583 CALIFORNIA RENEIVAL DATE: 12/31/24 (PE) 03/31/25 (RLS) EXISTING GROUND I- I 5" MIN. 5" MIN. INLET PROTECTION DETAIL N.T.S. 50' MIN. 12" MIN. PUBLIC RIGHT—OF—WAY EXISTING GROUND PROVIDE APPROPRIATE PROFILE TRANSITION BETWEEN STABILIZED CONSTRUCTION ENTRANCE AND PUBLIC RIGHT-OF-WAY 50' MIN. PLAN CONFORM TO CALIFORNIA STORM WATER QUALITY ASSOCIATION (CASQA)2009 PUBLIC RIGHT-OF-WAY STABILIZED CONSTRUCTION ENTRANCE DETAIL N.T.S. # REVISIONS DATE Data. DEBOLT 07/ 26✓ 23 sAe50 + YEARS 1" = 3G CIVIL ENGINEERING By: EM (925) 837-3780 I OFFICE@DEBOLTCIVIL.COM Job No.: 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 22102 CE-5 r U Z W c� Q Z w W 0 Z a W W Z 0 Z w W x r m 0 W a Q N Z Q W Z U N N N W J Z 0 Z O H U M W H (N Z O U O H O Z 0 Z Q Q Z M J W a W W Q V) Z a J a J J Q PRELIMINARY STORM WATER CONTROL PLAN TOWN OF DANVILLE DMA-1 81732 SF DMA-3 3,788 SF AMA-2 5,472 SF DMA-8 GRAPHIC SCALE 44,399 SF 30 0 15 30 60 - (IN FEET ) 1 inch = 30 ft. 5 OHLSON LANE CONTRA COSTA COUNTY Project Name: 5 Ohlson Lane Project Type: Treatment Only APN: Drainage Area: 106,798 Mean Annual Precipitation: 21.6 II. Self -Retaining Areas 1 4- �- t MA-5 2.0742 SF = - T DMA-6 3,475 SF ' 34,868 SF ' = T T DMA-4 41418SF �`�-------- T F Self-Retai inq DMA DMA Name Area (sq ft DMA7 34,868 DMA8 43,303 III. Areas Draining to Self -Retaining Areas DMA Name Area (sq ft) Surface Type Runoff Factor Product (Area x Runoff Factor) [A] Receiving Self Retaining DMA Receiving Self-Retaing DMA Area (sq ft) [B Ratio [A]/[B] DMA1 8732 Landscape 0.1 873.2 DMA8 43,303 0.02 DMA2 5472 Conventional Roof 1.0 5,472.0 DMA8 43,303 0.13 DMA3 3788 Concrete or Asphalt 1.0 3,788.0 DMA8 43,303 0.09 DMA4 4418 Concrete or Asphalt 1.0 4,418.0 DMA8 43,303 0.10 DMA5 2742 Concrete or Asphalt 1.0 2,742.0 DMA7 34,868 0.08 DMA6 3475 1 Conventional Roof 1 1.0 3,475.0 DMA7 34,868 1 0.10 Report generated on 3/14/2023 `IZ00:00 AM by the Contra Costa Clean Water Program IMP Sizing Tool software (version 1.3.1.0). EASTON C Mo4LLISTER - PE 61148 / PLS 9583 CALIFORNIA RENEWAL DATE: 12/31/24 (PE) 03/31/25 (P-S) # REVISIONS DATE Data. DEBOLT 07/ 26✓ 23 SAe50 + YEARS 1" = 3a CIVIL ENGINEERING By: EM (925) 837-3780 1 OFFICE@DEBOLTCIVIL.COM Job No.: 480 SAN RAMON VALLEY BLVD UNIT L, DANVILLE, CA 94526 22102 CE-6 rr7rr rn r]r rjrRAf-%X/rr1 dh. dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel. 415.786.642 7 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DA TE SET LANDSCAPE PLAN L0.1 SCALE 1 /8"- 1'-0" PLANTING SCHEDULE TREES ICON BOTANICAL NAME COMMON NAME SIZE SPACING QTY AVG. AVG. HEIGHT SPREAD 0 Quercus agrifolia Coast live oak 3611 Box AS 1 20 T 0 20 T 0 SHOWN 36" Box AS 2 10 - 20 10 - 15 Cercis occidentalis Western Redbud 24" Box SHOWN 1 FT FT Arbutus unedo Strawberry tree 24" BOX AS 31 6 5 6 5 SHOWN FT FT Arctostaphylos manzanita 5 Gal. AS 38 12 - 15 12 - 15 `Dr. Hurd' Dr. . Hurd Manzanita 15 Gal. SHOWN 19 FT FT Rhamnus californica Coffee berry 5 GAL. AS 10 5 5 10 FT SHOWN FT PLANTING SCHEDULE GRASSES ICON BOTANICAL NAME COMMON NAME SIZE SPACING QTY AVG. AVG. HEIGHT SPREAD AS G Festuca mairei Atlas fescue 1 Gal. 65 3 FT 3 FT OppOp�� SHOWN _ AS dh dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786. 6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DATE SET PLANTING PLAN L1.1 SCALE 1 /8"- 1'-0" PLANTING NOTES: GR❑UNDC❑VER—\ F 12" MINP OF 3" MULCH, I /(TYP) A :r_1:111011 _»3 6" DEPTH OF CULTIVATI❑N WITH S❑IL AMENDMENTS fWRTILIZER, SEE ECIFICATI❑NS/S❑IL REPORT NOTES: 1. WEED CONTROL TO BE APPLIED TO ALL PLANTING AREAS AFTER COMPLETION OF PLANTING & PRIOR TO MULCH APPLICATION. USE SURFLAN, OR EQUAL (SEE SPECIFICATIONS). GROUNDCOVER PLANTING DETAIL SCALE: NTS SET TOP OF THE ROOT BALL 1/2" ABOVE FINISH GRADE FINISH GRADE SEE SPECS/SOIL REPORT FOR BACKFILL SPECIFICATIONS/SOIL RECOMMENDATIONS PLACE BOTTOM OF ROOT BALL ON UNDISTURBED SOIL PIT SIZE SHALL BE THREE TIMES WIDER THAN THE ROOT BALL MULCH 21 GRAM AGRIFORM PLANTING TABLETS OR EQUAL (20-10-5), PLACED 1/3 DOWN FROM TOP OF ROOT BALL. USE: 2 FOR 1 GALLON 1.) WEED CONTROL TO BE APPLIED TO ALL PLANTING AREAS AFTER COMPLETION OF PLANTING & PRIOR TO MULCH APPLICATION. USE SURFLAN, OR EQUAL (SEE SPECIFICATIONS). SHRUB PLANTING DETAIL SCALE: NTS CORDED RUBBER 1--�Q TREE TIES v TYP SET TOP OF ROOTBALL 1/2" ABOVE FINISHED GRADE 3" MULC 4" HIGH BASIN FINISH GRADE DO NOT DRIVE STAKES THROUGH ROOT BALL •;, ,* SEE SPECS/SOIL REPORT FOR BACKFILL SPECIFICATIONS/SOIL RECOMMENDATIONS NOTES: m WOOD STAKES INSTALLED AT AN ANGLE TO COMPENSATE FOR MOVEMENT WHEN TIES ARE TIGHTENED 21 GRAM AGRIFORM TABLET (20-10-5) PLACED 1/3 DOWN FROM TOP OF ROOT BALL. USE: 6 FOR 15 GALLON PIT SHALL BE 3 TIMES WIDER THAN ROOT BALL PLACE ROOT BALL ON .. UNDISTURBED SOIL STAKES TO BE SET ON EAST & WEST SIDES OF TREE. SINK INTO UNDISTURBED SOIL. 2. ROUND WOOD STAKES SHALL BE OF A HEIGHT APPROPRIATE TO SUPPORT TRUNK OF TREE AND TO ALLOW TIES TO BE SET ABOVE THE POINT WHERE THE TREE BENDS NATURALLY. IN SOME CASES THIS MAY REQUIRE A STAKE TALLER THAN 8'. 3. TREE TIES SHALL BE CORDED RUBBER TIES NAILED TO THE BACK OF STAKE OR FASTENED WITH WIRE TIES FOR ADDED STRENGTH AND SHOULD BE INSTALLED ABOVE POINT WHERE TREE BENDS NATURALLY WHEN HELD BY HAND. DO NOT ALLOW TREE TO RUB AGAINST STAKES. TREE STAKING DETAILS 1. DETERMINE EXACT LOCATIONS OF ALL UNDERGROUND UTILITIES AND VERIFY IN FIELD. REPORT ANY CONFLICTS TO DESIGNER PRIOR TO BEGINNING WORK. 2. MIX COMPOST AND FERTILIZERS WITH TOPSOIL ON A SITE SPECIFIC BASIS AT RATES APPROPRIATE FOR PLANTINGS IN ACCORDANCE WITH THE SPECIAL PROVISIONS. 3. STAKE LOCATION OF ALL TREES, HEDGE LINES AND PLANTING BEDS AND NOTIFY DESIGNER FOR REVIEW PRIOR TO PLANTING. 4. THE PLANTING PLANS ARE DIAGRAMMATIC. SPOT PLANT MATERIALS APPROXIMATELY AS SHOWN ON THE LANDSCAPE DRAWING AND NOTIFY DESIGNER FOR REVIEW BEFORE REMOVING FROM CONTAINERS. 4. INSTALL ALL PLANT MATERIAL IN ACCORDANCE WITH DETAILS AND SPECIFICATIONS. 5. REMOVE ALL PLANT TYING MATERIAL AND MARKING TAPES AT THE TIME OF PLANTING. 6. INSTALL A MIN 3" LAYER OF HARDWOOD BARK MULCH AROUND ALL TREES AND SHRUBS AND IN ALL PLANTING AREAS UNLESS NOTED OTHERWISE. 7. INSTALL A 1" MUSHROOM COMPOST LAYER AROUND ALL TREES AND SHRUBS AND IN ALL PLANTING AREAS UNLESS OTHERWISE NOTED. 8. WATER ALL PLANTS IMMEDIATELY AFTER PLANTING. FLOOD PLANTS TWICE DURING FIRST TWENTY-FOUR HOUR PERIOD OF PLANTING. 9. PRUNE ALL DECIDUOUS SHADE TREES FOR A MINIMUM LOWEST BRANCH HEIGHT OF 7 FEET. 10. INSTALL AND MAINTAIN LAWN SUBSTITUTE TO PREVENT EVIDENT SEAMS. 11. NO TREES MAY BE PLANTED OVER WATER MAINS LESS THAN 24-INCH DIAMETER UNLESS THEY REACH A MAXIMUM MATURE HEIGHT OF 30 FEET AND A MAXIMUM MATURE ROOT DEPTH OF 30 INCHES. POTENTIAL PLANTINGS THAT MEET THIS REQUIREMENT INCLUDE THE FOLLOWING: a. ORNAMENTAL SHRUBS OR BUSHES MEETING THE MATURE HEIGHT AND MATURE ROOT DEPTH AS PREVIOUSLY STATED. b. FLOWERS OR OTHER NON -WOODY HERBACEOUS PLANTS. C. ABOVE GROUND, REMOVABLE PLANTING CONTAINERS THAT CAN BE MOVED BY CONSTRUCTION EQUIPMENT IN THE EVENT THAT WATER MAIN REPAIR IS REQUIRED. SOIL PREP NOTES: SOIL PREPARATION, MULCH AND AMENDMENTS (A) PRIOR TO THE PLANTING OF ANY MATERIALS, COMPACTED SOILS SHALL BE TRANSFORMED TO A FRIABLE CONDITION. ON ENGINEERED SLOPES, ONLY AMENDED PLANTING HOLES NEED MEET THIS REQUIREMENT. (B) SOIL AMENDMENTS SHALL BE INCORPORATED ACCORDING TO RECOMMENDATIONS OF THE SOIL REPORT AND WHAT IS APPROPRIATE FOR THE PLANTS SELECTED (SEE SECTION 492.5). (C) FOR LANDSCAPE INSTALLATIONS, COMPOST AT A RATE OF A MINIMUM OF FOUR CUBIC YARDS PER 1,000 SQUARE FEET OF PERMEABLE AREA SHALL BE INCORPORATED TO A DEPTH OF SIX INCHES INTO THE SOIL. SOILS WITH GREATER THAN 6% ORGANIC MATTER IN THE TOP 6 INCHES OF SOIL ARE EXEMPT FROM ADDING COMPOST AND TILLING. (D) A MINIMUM THREE INCH (3") LAYER OF MULCH SHALL BE APPLIED ON ALL EXPOSED SOIL SURFACES OF PLANTING AREAS EXCEPT IN TURF AREAS, CREEPING OR ROOTING GROUNDCOVERS, OR DIRECT SEEDING APPLICATIONS WHERE MULCH IS CONTRAINDICATED. TO PROVIDE HABITAT FOR BENEFICIAL INSECTS AND OTHER WILDLIFE, UP TO 5% OF THE LANDSCAPE AREA MAY BE LEFT WITHOUT MULCH. DESIGNATED INSECT HABITAT MUST BE INCLUDED IN THE LANDSCAPE DESIGN PLAN AS SUCH. (E) STABILIZING MULCHING PRODUCTS SHALL BE USED ON SLOPES THAT MEET CURRENT ENGINEERING STANDARDS. (F) THE MULCHING PORTION OF THE SEED/MULCH SLURRY IN HYDRO -SEEDED APPLICATIONS SHALL MEET THE MULCHING REQUIREMENT. (G) ORGANIC MULCH MATERIALS MADE FROM RECYCLED OR POST -CONSUMER SHALL TAKE PRECEDENCE OVER INORGANIC MATERIALS OR VIRGIN FOREST PRODUCTS UNLESS THE RECYCLED POST -CONSUMER ORGANIC PRODUCTS ARE NOT LOCALLY AVAILABLE. ORGANIC MULCHES ARE NOT REQUIRED WHERE PROHIBITED BY LOCAL FUEL MODIFICATION PLAN GUIDELINES OR OTHER APPLICABLE LOCAL ORDINANCES. dh dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786.6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DATE SET PLANTING DTAILS L1.2 SCALE AS SHOWN SCALE: NTS HYDROZONE AREAS ICON NAME IRRIGATION TYPE AREA LOW HYDROZONE AREA DRIP 763 SQ. FT. MODERATE HYDROZONE AREA LLL HIGH HYDROZONE AREA - - TOTAL AREA 785 SQ. FT. Town of Danville D� Water Allowance Worksheet Version 5.12 - Updated 2022 Total irrigated landscape area: 763 sq. ft. (residential use classifications) Total irrigated landscape area: sq. ft. (all other land uses) H drozone Type PF Planting Area Irrigation Method IE 1. Low water usage plants 0.20 439 sq. ft. Drip emitters 85% 2. Low water usage plants 0.20 135 sq. ft. Bubblers 80% 3. Low water usage plants 0.20 189 sq. ft. Bubblers 80% 4. 0.00 sq. ft. 71 % 5. 0.00 sq. ft. 71 % 6. 0.00 sq. ft. 71 % 7. 0.00 sq. ft. 71 % 8. 0.00 sq. ft. 71 % 9. 0.00 sq. ft. 71 % 10. 0.00 sq. ft. 71 % 11. 0.00 sq. ft. 71 % 12. 0.00 sq. ft. 71 % 13. 0.00 sq. ft. 71 % 14. 0.00 sq. ft. 71 % 15. 0.00 sq. ft. 71 % Special Landscape Areas: sq. ft. (residential use classifications) Special Landscape Areas: sq. ft. (all other land uses) Water feature surface areas: sq. ft. Reference Evapotranspiration (ETo): 49.40 Max. Applied Water Allowance (MAWA): 12,853 gallons per year Estimated Total Water Usage (ETWU): 5,645 gallons per year Result: Plant Factors (PF) Irrigation Efficiency (IE) Very low water usage plants 0.05 Subsurface irrigation 90% Low water usage plants 0.20 Drip emitters 85% Moderate water usage plants 0.50 Bubblers 80% High water usage plants 0.80 Microspray 75% Warm -season turf grass 0.60 Stream rotor heads 75% Cool -season turf grass 0.80 Overhead spray (sprinklers) 71 % 1 P1\A/ 1 IX/rl rl f-%7P1A 1r- Arl r-A dh.- dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786. 6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DATE SET HYDROZONE PLAN L2.1 SCALE 1 /8"- 1'-0" IRRIGATION LEGEND IRRIGATION SYSTEM NOTES SYMBOL PRODUCT DESCRIPTION M EX. DOMESTIC WATER MAIN ►� GATE VALVE NIBCO-T113-1.25" 0 BACKFLOW PREVENTION DEVICE FEBCO-LF767FR-1" MASTER CONTROL VALVE SUPERIOR-3100-1" m FLOW SENSOR (SUB -METER) IRRITROL-FS-13100 © ELECTRIC CONTROLLER IRRITROL-MC-18-E ® WIRELESS WEATHER/RAIN SENSOR IRRITROL-CL-100-WIRELESS REMOTE CONTROL VALVE RAINBIRD-RWS-S-B-C-1401 ® DRIP ZONE CONTROL KIT RAINBIRD-XCZ-PRB-100-COM DRIP FLUSH VALVE RAINBIRD-XCZ-PRB-100-COM SHRUB BUBBLER RAINBIRD-RWS-S-B-C-1401 TREE BUBBLER RAINBIRD-RWS-B-C-1404 IRRIGATION SUPPLY LINE 1120/SCHEDULE 40 PVC PIPE -18" COVER IRRIGATION LATERAL LINE 1120/SCHEDULE 40 PVC PIPE -12" COVER SLEEVING 1120/SCHEDULE 40 PVC PIPE -24" COVER IRRIGATION SYSTEM IS DESIGNED FOR A MAXIMUM OF 12 G.P.M. AT 60 P.S.I. STATIC PRESSURE. VERIFY PRESSURE OF 60 P.S.I. AT THE POINT OF CONNECTION PRIOR TO BEGINNING THE INSTALLATION OF THE IRRIGATION SYSTEM. NOTIFY OWNERS REPRESENTATIVE OF ANY DISCREPANCIES IN PRESSURE. NOTIFY OWNERS REPRESENTATIVE SIX (6) DAYS PRIOR TO INSTALLATION FOR A PRE -INSTALLATION CONFERENCE AND FIELD REVIEW COORDINATION FOR TRENCH DEPTHS, ASSEMBLY REVIEW, PRESSURE TESTS, COVERAGE TESTS, PRE -MAINTENANCE AND FINAL REVIEWS. A CONTINUITY TEST WILL BE REQUIRED FOR CONTROL WIRE STUBOUTS. NO SUBSTITUTIONS WILL BE ALLOWED WITHOUT PRIOR WRITTEN APPROVAL FROM THE OWNERS REPRESENTATIVE. INSTALL CONTROLLER WHERE INDICATED. EXACT LOCATION OF CONTROLLER TO BE DETERMINED AT JOBSITE BY OWNERS REPRESENTATIVE. 120 VOLT ELECTRICAL SUPPLY IS PROVIDED FOR IN IMMEDIATE VICINITY BY ELECTRICAL SECTION OF CONTRACT. MAKE FINAL 120 VOLT ELECTRICAL CONNECTION TO CONTROLLER. USE THIN WALL METAL CONDUIT ABOVE GRADE. USE WATERPROOF CONNECTIONS FOR OUTDOOR INSTALLATION. PROGRAM CONTROLLER TO NOT EXCEED MAXIMUM FLOW RATE STATED IN NOTE NO. 1. INSTALL PER MANUFACTURERS SPECIFICATIONS. INSTALL AS DETAILED. SEAL ALL CONDUIT HOLES WITH SILICONE OR EQUAL. PROGRAM CONTROLLER TO IRRIGATE USING MULTIPLE REPEAT CYCLES OF SHORT DURATIONS. CARE SHALL BE TAKEN TO PREVENT RUNOFF OF WATER AND SLOPE/SOIL EROSION DUE TO PROLONGED APPLICATIONS OF WATER. GROUNDING AND INSTALLATION SHALL BE IN ACCORDANCE WITH MANUFACTURERS WRITTEN SPECIFICATIONS. INSTALL ALL EQUIPMENT AS DETAILED. INSTALL R.C.V. ID TAGS MANUFACTURED BY T. CHRISTY ENT. STANDARD SIZE, 1-1/8" HOT STAMPED BLACK LETTERS ON YELLOW BACKGROUND ON SOLENOID WIRES. LETTERS TO CONFORM TO CONTROLLER/STATION NUMBER. HEADS SHALL HAVE RISER ASSEMBLIES AS DETAILED. PIPE AND WIRING UNDER PAVEMENT SHALL BE INSTALLED AT A TWENTY-FOUR INCH (24") DEPTH BELOW GRADE. ALL WIRING UNDER PAVEMENT SHALL BE INSTALLED IN PVC SCHEDULE 40 ELECTRICAL CONDUIT. ELECTRICAL CONDUIT SHALL EXTEND SIX INCHES (6") BEYOND EDGE OF PAVEMENT. INSTALL SAND FOR BACKFILL IN VEHICULAR PAVEMENT AREAS TO 6" COVER ABOVE PIPE. SURROUND PIPE WITH SAND IN AREAS WHERE ROCKY TERRAIN IS ENCOUNTERED. VALVE CONTROL WIRE SHALL BE MINIMUM NO. 14 AWG COPPER UL APPROVED FOR DIRECT BURIAL IN GROUND. CONNECT WIRES WITH 3M DBY CONNECTORS PER MANUFACTURERS SPECIFICATIONS. EACH WIRE AT VALVES SHALL HAVE 24" EXCESS COILED LOOP IN VALVE BOXES. TAPE WIRES IN BUNDLES EVERY TEN FEET IN PLANTING AREAS. AT JOB COMPLETION, SUPPLY OWNER WITH TWO (2) KEYS FOR CONTROLLER. 117171l1Ar1f"%K1 ni ir-Ir-11 \/ I Mir' ECT dh dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786. 6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DATE SET IRRIGATION PLAN L3.1 SCALE 1/811- 1'-0" P� DRIP ZONE KIT INSTALLATION DETAIL N.T.S. PROFILE VIEW SUBSURFACE DRIPLINE INSTALLATION DETAIL N.T.S. 10 FINISH GRADE/TOP OF MULCH 02 VALVE BOX WITH COVER 03 30-INCH LINEAR LENGTH OF WIRE, COILED ® WATERPROOF CONNECTION 05 1-INCH BALL VALVE (INCLUDED IN XCZ-PRB-100-COM KIT) © ID TAG 07 REMOTE CONTROL VALVE: RAINBIRD PESB (INCLUDED IN XCZ-PRB-100-COM KIT) ® PRESSURE REGULATING QUICK CHECK BASKET FILTER: RAINBIRD PRB-QKCHK-100 (INCLUDED IN XCZ-PRB-100- KIT) 09 PVC SCH 40 FEMALE ADAPTOR 10 LATERAL PIPE 11 PVC SCH 80 NIPPLE (LENGTH AS REQUIRED) 12 PVC SCH 40 ELL 13 PVC SCH 80 NIPPLE (2-INCH LENGTH, HIDDEN) AND PVC SCH 40 ELL 14 PVC SCH 40 TEE OR ELL 15 MAINLINE PIPE 16 3-INCH MINIMUM DEPTH OF 3/4 -INCH WASHED GRAVEL 17 PVC SCH 80 NIPPLE, CLOSE (INCLUDED IN XCZ-PRB-100-COM KIT) SPECIFIED MULCH -SEE PLANTING PLANS FINISH GRADE PVC SCHEDULE 40 ADAPTER PVC CLASS 200 PIPE FROM EMITTERS 1/2" PVC BALL VALVE (SxS) 10" ROUND BLACK PLASTIC VALVE BOX AND LID 0-1" 3' COILED FLEXIBLE PVC HOSE -1/2" SUPPORT BRICK AT EACH CORNER 2" MIN. (TYP) DRAIN ROCK 12" MIN. DEPTH FLUSH VALVE INSTALLATION DETAIL N.T.S. 1. PLACE TOP OF RWSS EVEN WITH FINISH GRADE OR TOP OF MULCH. 2. SPACE RWSS EVENLY BETWEEN SHRUBS, AS SHOWN ABOVE. 3. RWS-S IS AVAILABLE IN THE FOLLOWING MODELS: RWS-S-H-C-1401: 0.25 GPM (0,95 L/M), CHECK VALVE RWSSB1401: 0.25 GPM (0,95 L/M) 4. ONCE RWSS HAS BEEN INSTALLED FILL THE BASKET WITH PEA GRAVEL BEFORE REPLACING SNAP -ON LID. ROOT WATERING SYSTEM RWS-S - INSTALLATION FOR SHRUBS N.T.S. 10 FINISH GRADE/TOP OF MULCH O ROOT WATERING SYSTEM: RAIN BIRD RWS-S 30 2(1,3 CM) SPIIRAL BARB FITTING (INCLUDED) ® "' (1,3 CM) SWING ASSEMBLY: RAIN BIRD SA-125050 OR 2(1,3 CM) SWING PIPE: RAIN BIRD SP SERIES WITH "' (1,3 CM) MALE NPT X 0.490" BARB ELBOW: RAIN BIRD SBE-050 05 PVC SCH 40 TEE OR EL © PVC OR POLYETHYLENE LATERAL PIPE O SHRUB ROOT BALL 10 FINISH GRADE/TOP OF MULCH O ROOT WATERING SYSTEM: RAIN BIRD RWS-S 30 SWING ASSEMBLY (INCLUDED) ® "' (1,3 CM) MALE NPT INLET (INCLUDED) 05 PVC SCH 40 TEE OR EL © PVC OR POLYETHYLENE LATERAL PIPE 07 OPTIONAL SOCK (RWS-SOCK) FOR SANDY SOILS ® 4" (10,2 CM) WIDE X 36" (91,4 CM) LONG RIGID BASKET WEAVE CANISTER (INCLUDED) 09 PLANT ROOT BALL NOTES: 1. POSITION 2-3 UNITS (OR MORE) EVENLY SPACED AROUND PLANT. FOR NEW TREES PLACE NEAR ROOT BALL. FOR EXISTING TREES PLACE HALF THE DISTANCE BETWEEN CANOPY EDGE AND TREE TRUNK. 2. INSTALL PRODUCT WITH TOP EVEN WITH GROUND SURFACE. 3. RWS SERIES AVAILABLE IN THE FOLLOWING MODELS: RWS-B-C-1401: 0.25 GPM (0,95 L/M), CHECK VALVE RWS-B-1401: 0.25 GPM (0,95 L/M) RWS-B-X-1401: 0.25 GPM (0,95 L/M), 18" (45,7 CM) SWING ASSEMBLY RWS-B-C-1402: 0.5 GPM (1,9 L/M), CHECK VALVE RWS-B-1402: 0.5GPM (1,9 L/M) RWS-B-C-1404: 1.0 GPM (3,8 L/M), CHECK VALVE 4. WHEN INSTALLING IN EXTREMELY HARD OR CLAY SOILS, ADD 4" (1,9 CM) GRAVEL UNDER AND AROUND THE UNIT TO ALLOW FASTER WATER INFILTRATION AND ROOT PENETRATION. 5. ONCE RWS HAS BEEN INSTALLED FILL THE BASKET WITH PEA GRAVEL BEFORE LOCKING LID. 6. OPTIONAL RWS-SOCK FOR USE IN SANDY SOILS. ROOT WATERING SYSTEM RWS - INSTALLATION FOR TREES N.T.S. dh dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786.6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DATE SET IRRIGATION DETAILS L3.2 SCALE AS SHOWN 24" 4" PAVING BASE MATERIAL INITIAL SAND BACKFILL LAY PIPE ON 2" SAND BED. SAND TO EXTEND 6" ABOVE SHALLOWEST PIPE. L.V. WIRING IN CONDUIT TRENCHES IN PAVED AREAS SNAKE ALL PIPE IN TRENCHES AS SHOWN FINISH GRADE 1 V � ��j ��j ��j � III ��j �� 1211 /��A/AAA/AAA 18„ ����\ ��� ���� 12 VAS VAS VAS VAj A� \ LATERAL (TYP) 4" 0 SALVAGED EXCAVATED FILL INITIAL SAND BACKFILL COMPACED TO REQUIRED IN TRENCHES WITH ORIGINAL DENSITY (TYP) ROCKY TERRAIN. LAY PIPE SUPPLYLINE (TYP) ON 2" SAND BED. SAND TO EXTEND 6" ABOVE L.V. WIRING (TYP) SHALLOWEST PIPE. TRENCHES IN PLANTED AREAS TRENCHING DETAILS N.T.S. 14" x 19" RECTANGULAR BLACK PLASTIC VALVE BOX AND LID WATERPROOF WIRE CONNECTORS SPECIFIED MULCH -SEE PLANTING PLANS FINISH GRADE IRRIGATION SUPPLY LINE (LENGTH AS REQUIRED) (TYP) 3" CLEARANCE SUPPORT BRICK AT EACH CORNER COMMON WIRE MASTER CONTROL VALVE 3" +l-1 /2" 0-1" INSTALL DRAIN ROCK 2" BEYOND PERIMETER OF VALVE BOX NOTES: 1. CENTER BOXES OVER VALVES. 2. SET BOXES IN GROUNDCOVER/SHRUB AREA WHERE POSSIBLE. 3. SET BOXES PARALLEL TO EACH OTHER AND PERPENDICULAR TO EDGE. 4. AVOID HEAVILY COMPACTING SOIL AROUND BOXES TO PREVENT DAMAGING VALVE BOXES. ROUND VALVE BOX 0 o 12" ME!nTAAInl II AD \/AI \/C DnV /TVMN PLANTING AREA EDGE OF LAWN, WALK, FENCE, CURB, ETC. TOP VIEW VALVE BOX INSTALLATION DETAIL N.T.S. NOTE: ALLOW 10 PIPE DIAMETERS UPSTREAM AND 5 PIPE DIAMETERS DOWNSTREAM FROM SENSOR OF STRAIGHT UNOBSTRUCTED PIPE TO ENSURE PROPER FLOW READING. SPECIFIED MULCH -SEE PLANTING PLANS FINISH GRADE —7 7PV451 C SCHEDULE 80 G" M N ELL (SxS)(TYP) IRRIGATION SUPPORT SUPPLY LINE BRICK AT a (TYP) EACH CORNER CONTROL WIRES DRAIN ROCK 12" MIN. DEPTH PVC SCHEDULE 80 T.O.E. NIPPLE 2" LONG (TYP) MASTER CONTROL VALVE INSTALLATION DETAILS N.T.S. 3" MIN 10" ROUND BLACK PLASTIC VALVE BOX AND LI D FLOW METER WATER —PROOF WIRE CONNECTORS (TYP) 01' III��II 111111���111- PVC SCHEDULE 80 45" ELL (TYP) DRAIN ROCK 12" MIN. DEPTH INSTALL DRAIN ROCK 2" MIN. BEYOND PERIMETER IRRIGATION SUPPLYLINE (TYP) OF VALVE BOX WIRES TO CONTROLLER FLOW METER INSTALLATION DETAIL N.T.S. FINISH GRADE SPECIFIED MULCH - SEE PLANTING PLANS I� �IIIIII� II -III III III 8" DIA. PVC CLASS 160 PIPE (LENGTH AS REQUIRED) SUPPORT BRICK AT EACH CORNER 10" ROUND BLACK PLASTIC VALVE BOX AND LID 0-1" III IIIIII- 6" MIN. BRONZE GATE VALVE PVC SCHEDULE 80 SLIP COUPLING (TYP) 77 (D �� 0 0 INSTALL DRAIN DRAIN ROCK ROCK 2" MIN. 12" MIN. DEPTH BEYOND PERIMETER OF VALVE BOX PVC SCHEDULE 80 T.O.E. IRRIGATION SUPPLYLINE (TYP) NIPPLE (LENGTH AS REQUIRED)(TYP) GATE VALVE INSTALLATION DETAIL o� o� � 0 � C N.T.S. UAJ I N I I VV I I AI I V I V IRRIGATION SYSTEM HOLLER V/ALL IN CTRICAL NOTES: PRIME AND WRAP WITH 50% OVERLAP ALL GALVANIZED STEEL PIPE AND FITTINGS BELOW GRADE WITH 10 MIL CORROSION PROTECTION TAPE (SCOTCHRAP OR EQUAL). PRESSURE VACUUM BREAKER — BACKFLOW PREVENTION DEVICE GALVANIZED STEEL 900 ELL (TYP) 6" GALVANIZED STEEL NIPPLE GALVANIZED STEEL UNION GALVANIZED STEEL NIPPLE 1'2" (LENGTH AS REQUIRED) (TYP) FINISH GRADE PVC SCHEDULE 80 12" T.O.E. NIPPLE PVC SCHEDULE 80 SLIP COUPLINGS PVC SCHEDULE 80 PIPE FROM POINT OF CONNECTION IRRIGATION SUPPLYLINE BACKFLOW PREVENTION ASSEMBLY DETAIL N.T.S. 14"x19" RECTANGULAR BLAC1 PLASTIC VALVE BOX AND LID PVC SCHEDULE 80 2" T.O.E. NIPPLE FINISH GRADE SPECIFIED MULCH -SEE PLANTING PLANS III�II C 3„+1 /2„ PVC SCHEDULE 80 90' ELL (SxS) IRRIGATION SUPPLYLINE )LENGTH AS REQUIRED) �G0NTR0L J(DD 00 �� WIRES - - IRRIGATIONS SUPPLYLINE (TYP) LUIT PVC SCHEDULE 80 - TEE (SxSxS) OR 900 ELL )SxS) DRAIN ROCK 12" MIN. DEPTH WALL MOUNT CONTROLLER INSTALLATION DETAIL N.T.S. REMOTE CONTROL VALVE WATERPROOF WIRE CONNECTOR (TYP) PVC SCHEDULE 80 12" T.O.E. NIPPLE 0 1 IIIII IIIIIIIIIIII PVC SCHED. 40 45' ELL (SxS) C C C L-3" MIN. INSTALL DRAIN ROCK 2" MIN, BEYOND PERIMETER OF VALVE BOX COMMON WIRE IRRIGATION SPRINKLERLINE- REMOTE CONTROL VALVE INSTALLATION DETAIL N.T.S. dh dhd damir hurdich design 633 quarry rd. suite a san carlos, ca 94070 67 otsego avenue san francisco, ca 94112 tel.415. 786.6427 Rao Residence 5 Ohlson Lane Danville, CA 94526 NOT FOR CONSTRUCTION REVISIONS DA TE SET IRRIGATION DETAILS L3.3 SCALE AS SHOWN