Loading...
HomeMy WebLinkAbout011420-03.1AA BANVIL.LL STUDY SESSION MEMORANDUM 3A TO: Mayor and Town Council January 14, 2020 SUBJECT: Multi -Sport Skate Park Updated Site Analysis BACKGROUND At its October 15, 2019 meeting, the Town Council considered the updated site analysis for the Skate Park Feasibility Study, the results of an on-line community survey and written and oral comments provided by the community. The Town Council accepted the updated site analysis for the Skate Park Feasibility Study as presented and identified Diablo Vista, Osage Station and Sycamore Parks as their top three preferred locations for a potential skate park site. Subsequently, Town staff was directed to work with the Spohn Ranch Skate Parks (Consultant) to further evaluate these sites, including cost estimates, construction impacts and any other factors affecting feasibility. The consultant and staff have completed this additional evaluation for review and discussion by the Town Council. DISCUSSION Feasibility Study Amendment - Design Report For the Study Amendment, the consultant reviewed and further analyzed locations within Diablo Vista, Osage Station and Sycamore Valley Parks to determine the viability for constructing and operating a multi -use skate park. The Study Amendment (Attachment A) provides conceptual schematic design concepts within each park location of approximately 20,000 square feet to provide a better understanding of site impacts, structural implementation of a skatepark, cost estimates and analysis of each design option. This information also includes information regarding potential lighting used at skate parks. The conceptual schematic designs shown in the attachment are not fully realized from a user perspective and are being presented to understand site impacts and integration. Staff Site Analysis Once the consultant completed his work, the Town's engineering and maintenance staffs reviewed the schematic designs. While each of the proposed sites are feasible, each has some constraints and additional costs. These are summarized in Attachment B. FISCAL IMPACT A future decision to move forward with design and construction of a multi -use skate park would require including the project in the CII' and identifying one or more potential funding sources for the project. No project funding is currently included in the CIP. RECOMMENDATION Review, discuss and provide input regarding the Multi -Sport Skate Park Updated Site Analysis. Prepared and Reviewed by: Henry Perezalonso Recreation, Arts & Community Services Director Attachments: A - Feasibility Study Amendment -Design Report B - Staff Site Analysis Multi -Sport Skate Park 2 January 14, 2020 e�� SPOHN RANCH S K A T E P A 2 K 8 SKATEPARK REPORT TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 DESIGN, BUILD. COME TOGETHER, In this section there are comparative design concepts for all three parks. 1. Sycamore Valley Park (top of slope location) 2. Osage Station Park 3. Diablo Vista Park Each concept makes best use of the available space to deliver an optimal design targeting the established size of 20,000. Also included: • Rough construction estimates. • Osage lighting design by NLS • Osage lighting designs by Musco (two alternate systems) I P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH.COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 ATTACHMENT A re�ma SPOHN RANCH 8 K A T E P A k K 5 COST ESTIMATE SYCAMORE VALLEY PARK SKATEPARK (LOCATION B) TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 DESIGN. BUILD, COME TOGETHER. SCOPE OF WORK: ESTIMATED COST: DESIGN DEVELOPMENT, CONSTRUCTION DOCUMENTS & ENGINEERING $45,000.00 MOBILIZATION & GENERAL CONSTRUCTION REQUIREMENTS (WILL CHANGE DEPENDING UPON SOILS REPORT & ACTUAL SITE CONDITIONS) $85,000.00 SITE PREPARATION, DRAINAGE & EARTHWORK $132,000.00 STEEL COPING, EDGE PROTECTION & GRIND RAILS $108,000.00 CONCRETE SKATE ELEMENTS/TERRAIN $546,000.00 CONCRETE FLATWORK $216,000.00 INTEGRAL COLOR $52,000.00 LANDSCAPING & IRRIGATION $90,000.00 RETAINING WALLS $100,000.00 SHADE STRUCTURES $80,000.00 LIGHTING $100,000.00 FENCING $90,000.00 PERFORMANCE & PAYMENT BONDS $33,550.00 TOTAL ESTIMATED COST: $1,677,550.00 ASSUMPTIONS: • Estimate assumes Owner to provide water access within 150' of skatepark footprint (minimum Y4" line with sufficient pressure/volume) • Estimate assumes Owner to provide power access within 150' of skatepark footprint (minimum two 20 -amp circuits (110v)) • Estimate does not include permit fees, traffic control measures, flagmen Estimate does not include 3`d party testing/inspections • Estimate does not include tree removal • Estimate does not include any work not expressly described in scope of work P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH,COM 1 6824 S CENTINELA AVE, LOS ANGELES, CA 90230 =N uu. Zm a Mai Zw° OYn�b y' I n m %ycai n � m d 1� 1 �-.-�;rr.- �-�""� � •- .. , ter_- y_..� ...� " 11,425 SOFT 6,248 SOFT 2,992 SOFT 20,665 TOTAL SOFT xy () Y p Zix= Qat ZWon _ �— Oat aY" Wen i 6�":Ma SPOHN RANCH S K A T E P A R K 8 DESIGN REPORT OSAGE PARK SKATEPARK TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 Osage Station Park (25,344 sf design as shown) Estimated construction cost: $1,627,750.00 Cost per square foot (skatepark only): $52.88 Cost per square foot (all-inclusive): $64.23 DESIGN. BUILD. COME TOGETHER. The Osage Station location is an unprogrammed area created by existing walkways. The allotted area gives enough space to design and build a facility of optimal size. The design concept being presented shows several trees being removed, however if that proves undesirable, a slightly smaller design could also be accomplished. It would also be possible to leave the trees but relocate paths to achieve a larger size. The design shown has not been fully realized from a skate perspective and is being presented to better understand site impacts and integration. As the design is bordered by walkways, a combination of barriers and curbs would keep the skating activity and equipment within the intended space. The current barrier design isn't intended to be locked and offers access from all three converging pathways. A short pole (20') recessed lighting system is shown with photometric plan. A more complete low impact lighting plan could also make use of bollards distributed within the actual course areas. The drainage system is TBD, as we do not have a current soils report. P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH.COM 1 6824 S CFNTINELA AVE, LOS ANGELES, CA 90230 1 � 5PCHN RANCH S K A T 6 P A R K 8 COST ESTIMATE OSAGE PARK SKATEPARK TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 DESIGN. BUILD. COME TOGETHER, SCOPE OF WORK: ESTIMATED COST: DESIGN DEVELOPMENT, CONSTRUCTION DOCUMENTS & ENGINEERING $45,000.00 MOBILIZATION & GENERAL CONSTRUCTION REQUIREMENTS (WILL CHANGE DEPENDING UPON SOILS REPORT & ACTUAL SITE CONDITIONS) $67,500.00 SITE PREPARATION, DRAINAGE & EARTHWORK $140,000.00 STEEL COPING, EDGE PROTECTION & GRIND RAILS $121,500.00 CONCRETE SKATE ELEMENTS/TERRAIN $614,250.00 CONCRETE FLATWORK $243,000.00 INTEGRAL COLOR $54,000.00 LANDSCAPING & IRRIGATION $30,000.00 SHADE STRUCTURES $80,000.00 LIGHTING $100,000.00 FENCING $100,000.00 PERFORMANCE & PAYMENT BONDS $32,500.00 TOTAL ESTIMATED COST: $1,627,750.00 ASSUMPTIONS: Estimate assumes Owner to provide water access within 150' of skatepark footprint (minimum 3/a" line with sufficient pressure/volume) Estimate assumes Owner to provide power access within 150' of skatepark footprint (minimum two 20 -amp circuits (110v)) • Estimate does not include permit fees, traffic control measures, flagmen Estimate does not include 3,d party testing/inspections Estimate does not include tree removal • Estimate does not include any work not expressly described in scope of work P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH.COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 xy UY,$ Zoe was ZW9 xrm OQ 1 aY9 r w!5.345 SQFT F rc a 3 � 36,726 TOTAL SQFT ++ �. i ' i I "� [�4 �._�z- _ � -- -, z 77 ryrr. � �I '�v �- r�. ''"� �� ..�'_ Y.-' -� � a _ J T � ��f ��. r ell. "e rr$12M SPOHN RANCH S K A T E P A R K S Lighting concept 3 VUE-2 by NLS Full Cutoff Lighting h s:�fw�n�w.nlslip�hting.cam�roducts/vur:2_j DESIGN, BUILD. COME TOGETHER, The premise is that by using shorter poles with recessed LED lights there less visual obstruction with the skyline and less bleed. This plan by NLS has 11 fixtures on ten 20' poles. These poles are located within the actual skate course area and would need to be specifically located and integrated as to not become a collision hazard. I P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH,COM E INFO@SPOHNRANCH,COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 Az Z(D 'Dale 1217/2019 PROJECT: SPOHNRANCH SKATEPARKS Mawr Lov Pl EI Symbol Label Gly Description Lum. Wats Label Ca cType llnits vMaMin kvjv In iIlluminance I max, -Min 1 Ul 13 VI) f. -?.- 1 -1 - 13(,L - 1, 5OK- SINGi F-- nq 20 MCG- 111 1316 IlLuminanc - e Fc - ]_I 3 i 177 00 9a,ar 2 — -- —.— - — —!-� _ �Y��s L 11 VUE•2•15.9liL•1.SUN• �,-WNT� 16 ;FIGURED Illuminance Fc 19.74 354 72 274 492 Le be 3e 1, be 5ae h27 V2 S22 3 12s '121 f 5 be la. -,.-a, 11 7 114'•.• ,79 191 '169 1 %a "l a 6 :I '1 2 '1) 5 % i1.. $26 a Ile 5s $ . ,3 ofi "a '21 5 'M 4 '16 3 4 a vz Az Z(D 'Dale 1217/2019 PROJECT: SPOHNRANCH SKATEPARKS Mawr Lov Pl EI Symbol Label Gly Description Lum. Wats Label Ca cType llnits vMaMin kvjv In iIlluminance I max, -Min 1 Ul 13 VI) f. -?.- 1 -1 - 13(,L - 1, 5OK- SINGi F-- nq 20 MCG- 111 1316 IlLuminanc - e Fc - ]_I 3 i 177 00 9a,ar 2 — -- —.— - — —!-� _ �Y��s L 11 VUE•2•15.9liL•1.SUN• �,-WNT� 16 ;FIGURED Illuminance Fc 19.74 354 72 274 492 16 VUE-2 FULL CUTOFF SITE LIGHTING FORM AND FUNCTION . Sleek, low profile housing ! . Dark Sky Compliant, Full Cutoff . Engineered for optimum thermal management . Low depreciation rate . Reduces energy consumption and costs up to 65% . Exceeds IES foot candle levels utilizing the least number of poles and fixtures per project Optical system designed for Parking Lots, Auto Dealerships, Municipalities, Tennis Courts, Field Lighting CONSTRUCTION ' . Aluminum . External cooling fins, Finite Element Analysis (FEA) designed 17 . Corrosion resistant external hardware FINISH • 3-5 mils electrostatic powder coat. . NLS' standard high-quality finishes prevent corrosion protects against and extreme environmental conditions WARRANTY Five-year limited warranty for drivers and LEDs. LISTINGS Certified to UL 1598 • UL 8750 • CSA C22.2 N0. 250.0 DesignLights Consortium' (DLC) � �,o'un 1i L OS 1 gJ DesignLights Consortium Premium (DLCP) LISTED LED WATTAGE CHART 830 milliamps 10, milliamps 1060 milliamps 263w 316w Project Name: Type: VUE-2 Type 1 80 530 3000K : 120-277 ; Direct Pole Bronze Bird Spikes (BS) (316W Max) (Tl) (80L) (53) (30K) (UNV) _ Sinnle�Dl Boso (BRZ) Marine Grade Finish (MGF) (VUE-2) 700 4000K i 347-480: 6" (DPS6) 090. T9o. neo. 00 White Nema 7 Pin Receptacle (PE7) Type 2 _ 96 (7) (40K) (HV) 12" (DPS12) (wHTJ * Photocell JP Universa Vo tae 1 0 277 (T2) (96L) � Iver 1050 5000K : KnuckleMount(KM) (SUR) Photocell +Recepycle(PCR) 7 -Pin Stantlard Type 3 (1) (50K) Mast Arm (MA) iIur!fer Green Receptacle+ Shorting Cap (PER) (T3) Trunnion Mount (TM) (HGN) *7 -Pin Standard *Standard finish is stainless steel Can he to match fixture Ntegr: l FSP -''?'1 1 �btroLn Sensrn IU1VeEi Type T(T4)4 painted {loo BLK 8��)• Tennis Arm (TA) ((gp Qr 21 rto 40' Wall Mount (WM) G(GPHI)e Motion Sensor (MS) Type 5 *Includes 6" Bolton Arm Surge Protector (10K) (T5) Gre (GRy) Rotate Optic Right (ROR) *See next page for Arm Configurations *For Round Pole, please specify RPA4= : Custom Rotate Optic Left (ROL) Tennis or RPA5 (CS) House Side Shield (HSS) Optic Front Side Shield (FSS) (TT) Quick Mount Bracket (QMB) Retrofit Quick Mount Bracket (RQMB) Round Pole Aoa;ilor 3"- 4" Pole Xi%4 5"- 6" Pole {RPA5; 16 OPTICS I COMPETITOR vs NLS i i1 COMPETITOR OPTICS • Other optics hang down like giant illuminated teeth • Visible for hundreds of yards away • Cause distraction by glare • Neighbors request shields • City councils don't approve • Through time the lenses oxidize and get sand blasted, then become white instead of clear which creates even more glare NLS HIDDEN OPTICS • LEDs are hidden 2 to 3 inches deep into the fixture, protected by a flat clear lens • Full Cut off design; no glare, no light pollution • Complies to Dark Sky and is neighborhood friendly • Precise uniformity with high vertical and horizontal lumens • Outstanding light distribution types and footcandles STAR POWER OPTICAL SYSTEM DRIVER HOUSING CAVITY Philips Advance 0-10V Die formed Aluminum, THERMAL MANAGEMENT 3003H14 Alloy. Extruded Aluminum heat &ink ad Dimming Driver. dBB� for maximum thermal conduction - THD @ Max Load < 15% Power Factor @ Max Load < 0 95 STAR POWER Recessed, hidden Optical System- Eliminates glare with Fun Cut -of design- EnatNes performance to exceed IES minimum foot candle levels and extend maintenance cycles FINISH Textured --3-5 mb powder coated. Applied electrost4tually NLS' standard hlgh-watily finishes prevent corrosion and crate exueme environment lasting protection. MOUNTING OPTIONS Direct Wall Mount Knuckle Mount OPTIONAL Wall Mount (Includes 6" Arm) I 10 Direct Pole Mount HOUSE SIDE SHIELD (HSS) Trunnion Mount r� • L- 74% A " A �I 1 Tennis Arm 2X4 DRILL PATTERN 2X6 DRILL PATTERN VUE - LUMEN DATA CHART (VUE-3) NUMBER T1 T2 OPTIC Lm/W 'DLC OPTIC LmlY! T2 -HSS •O! OPTIC Lm/W 'Di T3 OPTIC Lm/W •OLC T3 -HSS OPTIC Lm/W •OL T4 T4 -HSS OP71C LmM1V •OL OPTIC LmlW IS TS OPTIC LmA4 -PART 'OLC OPTIC irruW 'OLC WATI VUE-2-80L-1-30K _' 2_39_33 G 91 S 28404 108 S 18410 70 S I. 26826 102 j S : 23670 90 1 S _ 25774 98 S j-25090; 95 1 S 26563 101 I S _ - s i 263 VUE-2-BOL-1-40K 24722 94 S 1 28667 109 S S 27089_: 103 S 24722 94 S 26563 101 S 1 26221 99_ S 10_21 S ' 268_26 102 S 263_ VUE-2-BOL-I-SOK 26037 99 S 29193 111 _19462 _74_• ' S 20514 78 r 5 27352 {j 104 5 26037 99 s - _2662fi_j 27069 103 5 4 27089 103 S 27069JI 103 S 2761 5 105 5 263 VUE-2-96L-1-30K 28756 i 91 S� 34128 108_ S 21943 l 32232 102_1 S 28440 90 S 30966 98 �. S 30241 95 j S 31916 I l01 {I S - •_ S 316 VUE-2-96L-1-40K 29704 1 94 S 34444 109. _70_ S 23385 74 _S S 4 32548 1031 S 29705 94 ` S 31916 • 101 S 31474 99 ] S 4 32232 1 1021 -1 S 32232 102 1 S r 316 VUE-2-96L-1-50K 31284 1 99 S 135076 111 S 24649 , 78 ' S . 32864 104 S 31285 99 S 32548 103 S 32548 103 S 32548 103 I S 33180 105, S 316 *DLC s= standard Z. P= Premium L70 DEPRECIATION 483,000 Hours (@77°F/ 25°C) MOUNTING OPTIONS Direct Wall Mount Knuckle Mount OPTIONAL Wall Mount (Includes 6" Arm) I 10 Direct Pole Mount HOUSE SIDE SHIELD (HSS) Trunnion Mount r� • L- 74% A " A �I 1 Tennis Arm 2X4 DRILL PATTERN 2X6 DRILL PATTERN (VUE-1 and VUE-2) (VUE-3) SH,— 1.5„ 0 O 2.5" �O O O 00625 00625 2•5" TYPICAL x3 TYPICAL x3 Q fJ -� 71 3 51, T _ I FRONT SIDE SHIELD (FSS) Optional Cast Aluminum Bracket designed for quick mounting on Direct Square or Round Poles. Cleat mounts directly to pole for easily hung fixtures. DRILL PATTERN RQMB DRILL PATTERN Clear Cover clear f •r•ri�k�•1 vn- } 5' r , I � I\ 00.625 TYPICAL x3 QUICK MOUNT BRACKET (QMB) DIRECT POLE (DP6/DP11) Clear f:rv: c, —•'' L Extruded An, `• ae.. \• r ,J'% 4usle %,e Longe) slot to accommodate existing drill patter IT RETROFIT QUICK MOUNT BRACKET (RQMB) ` NLS 701 Kingshill Place, Carson, CA 90746 nlslighting.com LIGHTING Call Us Today (310) 341-2037 18 NLS LIGHTING TRAC —77% ARCHITECTURAL LIGHTING Trac is energy efficient—a great choice for any Parking lot, Pedestrial Scale or Commercial application. Micro Optics are recessed within the fixture's surface and can throw light distribution up to five mounting heights, creating powerful uniformity. - - - rt Kelvin temperatures are available in warm (3000), - neutral (4000) and cool (5000). The Trac conforms to the strictest Made in America standards and is designed, tooled, fabricated and assembled in the USA. See SQ Rectangular Aluminum Pole MICRO OPTIC SYSTEM Our new cell -enclosed, micro optic silicone modules produce high clarity *� and outstanding performance. LED WATTAGE CHART 360 milliamps 17w 630 milliamps 26w 700 m011emps 35w Project Name: Type - Cat 4 . Optics No. of LEDs Milliamps. . . Color Options Trac 1 Type 2 16 350 3000K 120-277 Direct Pole Square Bronze Marine 16Fj Finish (TRC -1) (T2) (16L) (35) (30K) (UNV) (DPS) ( *161_ Only White Surge Protector Type 3 32 4000K 340-480 (WHT) (10K) (T3) (32L) 530 (40K) (HV) Silver Nema 7 -Pin Receptacle (53) (SVR) (PE7) Type 4 32 -76L-32L Only 5000K Black Photocell (T4) (32L) (50K) (BLK) *Universal Voltage 120-277 700 Type 5 48 (7) Graphite (GPH) IAntl( 5;:n;.rn (T5) (48L) (HI5) Grey !_.J; 1:2 HAU1 L15 rt, 64 Custom WMi-vuJ'auti For 9' 10 20' (FSP -20) (64L) (CS) For 27'to 40' (FSP -40) ,Movon Sensor and FSP•2t 1 are inuvrxt to rhe ralure 107 Housing: Aluminum Extrusion LED: Lumileds Luxeon MX. CRI 70 Optics: Silicone Micro Optics T2, T3, T4, T5—IP67 Rated Watts: 18-136 (*Single Head Wattage) Driver. 0-1 OV Dimming driver as standard by Philips Advance THD @ Max Load < 15% Power Factor @ Max Load < 0.95 Kelvin: 3000, 4000, or 5000 Finish: 5 mils Powder Coat Hardware: All hardware is stainless steel Base Cover. Heavy Duty formed Aluminum, Powder Coated to match Pole, Fixture finish. Base Plate: Heavy Duty 1/2" Thick 6061 T6 Aluminum, 15" SQ Warranty. Standard Warranty is 5 years for Driver and LEDs TRAC LUMEN DATA CHART I PART NUMBER I OPTIC I Lm/W l OPTIC I Lm/W I OPTIC Lm/W I OPTIC I Lm/W WATTS I TRC -1 -16L -35-30K1 1908 106 1854 103 11836 102 1926 107 _ 18 TRC -1 -16L -35-40K 2016 112 1962 109 194_4 _108_ 2034 113 16 _I TRC -1 -16L -35-50K 2124 118 2070 j 115 2052 114 2142 119 18 TRC -1 -16L -53-30K 2966 106. 2884 103 2856 102 _ 2996 107 2B TRC -1 -16L -53-40K 3136 112 3052 109 3024 108 3164 113 28 TRC -1-161--53-50K 3304 118 ' 3220 115 j 3192 114 3332 119 28 TRC -1 -16L -7-30K 38_16_ j 106 3708 1 03 3672. 1_02_ j 3852 107 36 TRC -1 -16L -7-40K 4032. 112 3924 109 f 3888_ 108 i 4068 113 36 TRC -1 -16L -7-50K 4248 1 118 4140 115 4104 114 1 4284 i 119 36 TRC -1 -32L -53-30K 5936 i 106 5768_ 10T . 102 5992 107 56 TRC -1 -32L -53-40K 6272 112 6104 109 6048 106_1 6326 113 1 56 _TRC -1 -32L -53-50K 6608 118 6440 115 4 6384 11_4 6664 119 56 _TRC -1 -32L -7-30K 1 7526 106 7313 103 r-7242_ 102_ 7597 107 71 TRC -1 -32L -7-40K 7952 r 112 7739 109. 7668 108 8023 113 71 TRC -1 -32L -7-50K 8378 118 I 8165 t 115 8094 114 _8449 I 119 71 TRC -1 -48L -7-30K 11024 106 10712 103 10608 102 11128 107 I_ 104 TRC -1 -48L -7-40K 11648 112 11336 109 11232 i 108 11752 113 —104 TRC -1 -48L -7-50K j 1227 118 { 11960 1 115 11856 114 12376 119 104 TRC -1 -64L -7-30K 144-16 106 14006. 103 13-8721 10214552 107 136 TRC -1 -64L -7-40K 15232 112 t 14824 ' 109 1468_8 , 108 15368 113 136 TRC -1 -64L -7 -SOK j 16048 118 15640 115 155041 114 16184 119 136 ra 4�tA A DIMENSION TRAC A 6 in. B 53 in. (4.5 ft.) Rectangular Aluminum Pole (RAP) I FRONT VIEW SIDE VIEW NLS701 Kingshill Place, Carson, CA 90746 nislighting.COm LIGHTING Call Us Today (310) 341-2037 108 NL.STRAC BOLLARD SLOPE ARCHITECTURAL BOLLARDS Trac Bollard is a combination of security and vandal resistance that blends beautifully into any pathway environment. Designed as a slim bollard. A beautiful performance is created while combining uniform illumination for pathways or landscape 14. at 24", 36" or 42" heights. With two designs to choose from; linear and slope. 1L' The Trac Bollard offers Kelvin temperatures of (warm) 3000, (neutral) 4000 and (cool) 5000 in Type 2, 3, 4 and 5 light distribution. Conforms to the strictest Made in America standards—designed, tooled, fabricated and assembled in the USA. MICRO OPTIC SYSTEM Our new cell -enclosed, micro optic silicone modules produce high clarity and outstanding performance. LED WATTAGE CHART 176mllllamps low 360 mllliamps l7w 630 mllllamps 26w 70o mlllfampa 35w 7060 m101am s 56w Project Name Type: Cat Lerigth Light Dist No of LEDs millhanips Kelvin )011' MOLinfing Colo( optlon� 24 in Type 2 16 175 3000K 120-277 Anchor Base Bronze Surge Protector (24) (T2) (16L) (175) (30K) (UNV) (AB) (BRZ) (1 OK) White Marine Grade 36 in Type 3 350 4000K (WHT) Finish (MGF) Trac Bollard (36) (T3) (35) (40K) Silver Slope (SVR) Dual Head (TBS) 42 in Type 4 530 5000K (OH) Hunter Green (42) (T4) (53) (50K) (HGN) Black Type 5 700 (BLK) (T5) (7) Graphite (GPH) 1050 (1) Grey (GRY) Custom (cS) 282 283 � i SPOHN RANCH 3 K A T E P A R K 3 Lighting concept 2 TLC for LED by Musco Total Light Control �Ltj swww.musco_rom�ticle�d _ DESIGN. BUILD. COME TOGETHER. Total Light Control—TLC for LED® technology, we've paired our expertise in light control with the advancing output of LED to the point where it's a cost-effective option for recreational facilities. The result is a system that makes Musco's great lighting even better. This plan by MUSCO has 12 fixtures on four 50' poles. These poles are located on the perimeter of the and would not need to be specifically located and integrated as to not become collision hazards. P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH,COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 Danville Skatepark Danville, CA Lighting System From Hometown to Professional le / Fixture immm.wv • PWa It] Pnle Hs38 f Mill Hsl8h1 Pmu..isty Luminalm Typo Lwe CI roe I P1 -P4 50' 50' 3 TLC -LED -900 267 kW A 1 12 10.88 kW i -Circuit Summary CuCu+! �ncrlplfon Luad _ Flnnere pry A Skate Park 10.68 kW 12 Fixture Type Summary Igpe Source WatWpe 1, mhos LYO Laa 3.76 Quw ly TLC -LED -900 LED 5700K-75 CRI 890W 89,000 >81,000 >81,000 >81,000 12 Light Level Summary Odd Name Cakulatlon Me01c !Ilumnallon Cimits FlXtrra gty Aye Mtn Nasi MadMm A tvmih Skate Park wlBlockage Honvenl ul illuminan=e 315 0 43 ' 87.71 A 12 Skate Park wM Blockage Hodzental Illuminance 34 25 43 172 1 36 A 12 ENGINEERED DESIGN By: Daniel Lohman e File #203276A • 27 -Dec -19 0000 mu 711711�11 We Make It Happen, Not to be reproduced in whole or part Without the written consent of Musco Sports Lighting, LLC ©1981, 2019 Musco Sports Lighting, LLC EQUIPMENT LIST FOR AREAS SHOWN Name: Skate Park w/NO Blockage Size: 184'w 225' Spacing: 20 0' . 20 0' P e mtn I S 0 QTY LOCATON 612E LTADE H011x11HG ELEVATOx xE1WlT LI11aRHF TveE Q[Y! RALE Tec CMO �IHLR awns 4 nl n.1 SU, SO ILCLCD 300 3 S 0 4 '�rn1:.l � ._. .. 17 0 n NOTES: The numbers shown grid points underner structure Musca ca levels underneath o due to light blockagL 1 o• 59• 190, ENGINEERED DESIGN By: Daniel Lohman • File N203276A • 27 -Dec -19 Pole location(:) +1 en— ons are relative to Do reference pointts) V Danville Skatepark Danville, CA GRID SUMMARY Name: Skate Park w/NO Blockage Size: 184'w 225' Spacing: 20 0' . 20 0' Heighl. i. 0',1 boo gt a de 0 MAINTAINED HORIZONTAL FOOTCANDLES Entire Grid Scan Average: 33.95 Maximum: 43 Minimum: 2S Avg / Min: 1.35 Max/Min: L72 UG (adjacent pts): 1.36 CU: 0.73 No of Points: 58 LUMINAIRE INFORMATION Color/CRI: S700K-7SCRI Luminaire Output: 89,600 lumens No. of Luminaires: 12 Total Load: 10 68 kW a m nea�ceaao;e SuminAlrr Typr L90 nn ldo thin. 1'f0 hn rtc Ito 9r3(I >at,oaa ( .aloof) at,llnn Reported per Tni-u-1L see iumu—ire d. asheet — -lans Guaranteed Performance: The ILLUMINATION described above is guaranteed per your Musco Warranty document and includes a 0 95 dirt depreciation factor. Field Measurements: Individual field measurements may vary from computer -calculated predictions and should betaken in accordance with IESNA RP -6-15 Electrical System Requirements: Refer to Amperage Draw Chart and/or the "Musco Control System Summary'' for electrical sizing Installation Requirements: Results assume ± 35k nominal voltage at line side ofthe driver and structures located within 3 feet (lm) of design locations mu f � We Make It Happen-, Not to be reproduced in whole or pan without the'rmnen re—nl o! M—a Sports Lighfing, LLC 01901, 2019 Musco Sports Llghnng, LLC EQUIPMENT LIST FOR AREAS SHOWN umlnair 11 LOCATION WEG We Ma [Vrfe 0 rr HD N EIEVAnON i —E POLE go pPo05 H 1.1'4 Su' SO' I TLC -LEO -900 3 u A '•1fAl% 1'f. 11 n NOTES: The numbers shown do ii points underneath of the shade structure Musca cannot guarentee light levels undernealh of these slrudures due to light blockage 100' ENGINEERED DESIGN By: Daniel Lohman • File #203276A • 27 -Dec -19 Pole locabon(s)+dlmenvons are rela0ve to i reference poings) 6, Danville Skatepark Danville, CA GRID SUMMARY Name: Skate Park w/Blockage Size: 184' x 225' Spacing: 20 O' x 20 0' Height: 3.0' above grade ILLUMINATION MAINTAINED HORIZONTAL FOOTCANDLES Entire Grid Scan Average: 31.46 Maximum: 43 Minimum: 0 Avg / Min: 6352 Max / Min: 87.71 UG (adjacent pts): 7197 CU: 07S No. of Points: 64 ..1P•ur•.nrc: irrar r. Color / CRI: 5700K - 75 CRI Luminaire Output: 89,600 lumens No. of Luminaires: 12 Total Load: 10 68 kW m3mmnan�e 4umlonirriypc t90rvs r La0hr-Y 170 hrs ti LtD 900 811H10 s81,000 6i3OW Repo,ted�per TA1-2111 See tui mnaire da ra sh eel `or detail; Guaranteed Performance: The ILLUMINATION described above is guaranteed per your Musco Warranty document and includes a 0 95 dirt depreciation factor. Field Measurements: Individual field measurements may vary from computer -calculated predictions and should be taken in accordance with IESNA RP -6-15 Electrical System Requirements: Refer to Amperage Draw Chart and/or the "Musco Control System Summary" for electrical sizing. Installation Requirements: Results assume ± 3 nominal voltage at line side of the driver and structures located within 3 feet (lm) of design locations mu qr�,, We Make It Happen., Not to be reproduced io Mclin ci ww w%hout rho wirun, consan. a1 M : Spon. Lighting, LLC i'Ri :OC,) Mu.- Sports Lighting, LLC SCALE IN FEET 1 : BO oeo• Iso' ENGINEERED DESIGN By: Daniel Lohman p File #203276A p 27 -Dec -19 ff� r P2 Danville Skatepark Danville, CA mus Pole lccaban(s) +dimensions are reiabve to 0,0 reference point(s) ,, We Make It Happen, Not lobe reproduced in whole or part without the written consent of Mu— Sports Lighting, LLC 01981, 2019 Musco Sports Lighting, LLC INCLUDES: Skate Park Electrical System Requirements: Refer to Am perage Draw Chart and/or the "Muster Control System Summary" for electrical sizing Installation Requirements: Results assume 396 nominal voltage at line side of the driver and structures located within 3 feet )lm) of design locations EQUIPMENT LIST FOR AREAS SHOWN Perla Luminaires CRYI LOCATION 512E ELEVATION Nas. ITPE POLE 4 1 P1 -P4 •vi' 50' TLL rf.i1--9IIo 3 :arnt• 12 l;14ckTt4?1;J2YM 11M Ballast Spe[Rlcatfpns Line Ampera{tO Plf tuminalre Hast Specilcae rsse .T Single Phase Voltage 209 IWI 220 240 Iml 277 140 347 1.1 380 I.I 480 TLC -LED -900 53 ,Sq 1 50 46 1 32 29 1 23 mus Pole lccaban(s) +dimensions are reiabve to 0,0 reference point(s) ,, We Make It Happen, Not lobe reproduced in whole or part without the written consent of Mu— Sports Lighting, LLC 01981, 2019 Musco Sports Lighting, LLC Candelas a 250900 1iv.wo !0.000 stltl0 1.000 Soo 250 ENGINEERED DESIGN By: Daniel Lohman • File #203276A • 27 -Dec -19 Danville Skatepark Danville, CA Summary Map indicates the maximum candela an observer would see when Facing the brightest light source from any direction A well-designed lighting system controls light to provide maximum useful on -field illumination with minimal destructive off-site glare Candela Levels Nigh G1 are: 150,000 or more randela Should only occur on or very near the lit area where the light source is in direct view Care must be taken to minimize high glare zones. SignificantGlare: 25,000 to 75,000 candela Equivalent to high beam headlights of a can Minimal to No Glare: 500 or less candela Equivalent to 100W incandescent light bulb 0000 MUS I. We Make It Happen, Not to be reproduced in whole or gar: w:hwt Il Is,wn.n � _'. n' cf V,, Sports Lighting, LLC ©1981, Al rn f.S _ Sp rs L,Td,vnq. UA, 1 ma SPOHN RANCH S K A T E? A R K S Lighting concept 3 Cree OSQ Series by Musco Outdoor Lighting https://www.creeIighting.com/products/outdoor/area/osq-series DESIGN. BUILD. COME TOGETHER. This is a collaborative system between Musco and Cree lighting. Cree fixtures on Musco poles. This in not Muscos preferred solution and them believe their TLC system on taller poles offers better light control with less bleed This plan by Musco/Cree has 60 fixtures on fifteen 30' poles. These poles are located on the perimeter of the and would not need to be specifically located and integrated as to not become collision hazards. P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH,COM E INFO@SPOHNRANCH.COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 Danville Skatepark Danville, CA Lighting System IX r Pole 0 pole "199 WII11e1pht I:1nn.e qry umtnalre Type Loed CA—It P1 -P15 30' 30' 4 CREE OSO 0 52 kW A 15 Be 7.80 kW OCull 0".1000 Rw+d . Ftxsw.ft A Skate Park 7.6 kW 60 Fixture Type Summary 1yp* Souk. Wa 4go Lumen• rap Lou 1.71) r7eenUly CREE OSO LED 5700K - 70 CRI 130W 16,599 -• - - 60 Light Level Summary _ Grid Name Calauletlon Metro mumIns ionAve Wn Max �liwilre n AveiFtln c�� Fixture Ory Skate Park w/Blockage Horizontal Illuminance 226 1 40 4371 22.64 A 60 Skate Park w/NO Blockage Hod rmrm 111Wrmo-- 24.4 12 40 3.29 2.03 A d0 ENGINEERED DESIGN By: Daniel Lohman a File #2032768 a 27 -Dec -19 From Hometown to Professional C= mus r We Make It Happen Not to be reproduced in whole or part without the written consent of Musco Sports Lighting, LLC 81991, 2019 Musco Sports Lighting, LLC EQUIPMENT LIST FOR AREAS SHOWN . I � 1z `P3 ' fRz Name: Skate Park w/NO Blockage Palo I LUMT511[fell Height: 30 above rade QTY LOCAnOR -1 Op11 E�EYAf10N nnwrl rcAIR T TYRE 01 TOLC cns 0 N IEO OPoOS 1'• VI PIS ?0'!)' •11r LREE 0SO s 4 0 tri rALt Maximum: Fu f. 0 37, P4 25 20 I P1 63 _- 23 2�PS 8 18 16 20 26 P6 _ 15 16 16 3 12 19 15 16 141a 13 32 13 r 5 C?5 20 r, P15 31 F P8 P14 59 3 34 3-7 9 P13 NOTES: The numbers shown do not include the grid points underneath of the shade structure Musco cannot guarentee light levels underneath of Ihese structures due to light blockage 0' 50' 100' ENGINEERED DESIGN By: Daniel Lohman • File #203276B • 27 -Dec -19 3 Rq Danville Skatepark Danville, CA GRID SUMMARY Name: Skate Park w/NO Blockage Spacing: 20.0' .20o , Height: 30 above rade ILLUMINATION MAINTAINED HORIZONTAL FOOTCANDLES Entire Grid Scan Average: 24.38 Maximum: 40 Minimum: 12 Avg / Min: 203 Max / Min: 3.29 UG (adjacent pts): 170 CU: 057 No of Points: 58 LUMINAIRE INFORMATION Color / CRI: 5700K - 75 CRI / 5700K - 70 CRI Luminaire Output: 89,600 / 16,599 lumens No. of won inaires: 0 Total Load: 7 8 kW _ Luminaire TypeL90� h1 I110 hrss 1701, TLC -LED -900 181,000 .81.000 81 000 LREE OSO ReporledperTM-21-11 svc•Iwninaua dalasheet far dzraiis Guaranteed Performance: The ILLUMINATION described j above is guaranteed per your Musca fl Warranty document and includes a 0 9S P7 dirt depreciation factor. Field Measurements: Individual field measurements may varyfrom computer -calculated predictions and should be taken in accordance with IESNA RP -6-15 Electrical System Requirements: Refer to Amperage Draw Chart and/or the "Musco Control System Summary' for electrical sizing. Installation Requirements: Results assume ±3% nominal voltage at line side of the driver and structures located within 3 feet (lm) of design locations Polelocativn(s)+dimensions arerelative to 0,0 reference point(s) 0000 muscin 61- I We Make It Happen, Not to be reproduced in whole or part wihout the written consent of Musco Sports Lighting, LLC 01981, 2019 Musco Sports Lighting, LLC EQUIPMENT LIST FOR AREAS SHOWN Tole Im Hair aT1 LO11c1" SIZE Ie'aa ! xybl: ♦r rob �rl FIE 00 ,nay[t TYI•F n01F GnP Ps IS I'l-piS Y., 3:' CRE( r7SN 4 4 e 6u &I e. NOTES: The numbers shown do include the grid pnrlll•- IIn�nU n•:nh „f n• •:lr.v�� e[rac[Ure FAIL. eo cannot guarenlee light levels underneath of these structures due to light blockage :.P3 f 12 5 1 F'2/ar " Pd a 25 20 4 Pl � • � l 23 2 1 752 P5 1 8 8 18 16 20 26 I� 15 16 16 3 12 19 _6 a 15 16 14 3 32 3 V I v 5 CPS 20 „ �7 k P15 V 31 ' \ P8 P14 t yr 3 34 iN 37 \r s. P9 P 3'� 7 P12 ,> P10 P11 � l 1 Pole location(s)+dimensions are relative to 0,0 reference points) 12 0' 50' 100' ENGINEERED DESIGN By: Daniel Lohman • File #203276B • 27 -Dec -19 Danville Skatepark Danville, CA GRID SUMMARY Nim": Skate Park w/S!o[kage Spacing: 20.0'.200' Height: 3 0' above grade ILLUMINATION SUMMARY MAINTAINED HORIZONTAL FOOTCANDLES Entire Grid Scan Average: 22.64 Maximum: 40 Minimum: 1 Avg /Min: 25 01 Max / Min: 43.71 UG (adjacent pts): 1700 CU: 0 Sa No of Points: 64 LUMINAIRE INFORMATION Color / CRL 5700K - 75 CRI / 5700K - 70 CRI Luminaire Output: 89,600 / 16,599 tureens No. of Lun,To mires: fig Total Load: 7 a kW lumen Maintenance Luminaire Type L90 hes ! Leo hes I L70 h. TLC -LED -9.0R_ e1.a0D >a1,agD >a1 aoD •-� CREE OSO —`--- -- Repo, ted per TRA -21-11 Sce luln o—, datashcet lar details Guaranteed Performance: The ILLUMINATION described above is guaranteed per your Musca Warranty document and includes a 0 95 dirt depreciation factor. Field Measurements: Individual field measurements may vary from computer -calculated predictions and should be taken in accordance with IESNA RP -6-15. Electrical System Requirements: Refer to Amperage Draw Chart and/or the "Musco Control System Summary" for electrical sizing Installation Requirements: Results assume ± 3% nominal voltage at line side of the driver and structures located within 3 feet (lm) of design locations 0000 We Make It Happen:, Not to he reproduced In whole or part without the written consent of Musco Sports Lighting, LLC 01981, 2019 Musco Sports Lighting, LLC I Pal P2,"' P4 P1� I P5 P6 ~1_ D P7 � � 1 P15 X P8 P14 C ' P13 '. A9 P12 P10 1311 SCALE IN FEET 1 : 80 Pole locations) *{,dimensions are relative to 0,0 reference point(s) 80' 160' ENGINEERED DESIGN By: Daniel Lohman • File #2032766 • 27 -Dec -19 Danville Skatepark Danville, CA EQUIPMENT a INCLUDES: Skate Park Electrical System Requirements: Refer to Amperage Draw Chart and/or the "Musco Control System Summary" for electrical sizing Installation Requirements: Results assume ±3% nominal voltage at line side of the driver and structures located within 3 feet (lm) of design locations EQUIPMENT aSHOWN Pole Lumfha(res QTY LOCATION SUE nEy-MN r WF N POLE -PE isPi pis .hY 1' 1e' cuk 0%0 •4 Is inT, .. .. A Ballast SplrtiHsations Line Amperage Per Wminalre (.so min re.,•c11 ft—dnrl Single Phase Voltage 208 220 240 277 347 1.1 380 480 1-1 Iwl til I-) e:,fa 04 Ire) �rAl 1 1 03 muczrairaalfair 711. We Make It Happen, Not to he reproduced in whole or part without the vrtiden consent of Musco Sports Lighting, LLC ©1981, 2919 Musca Sports Lighting, LLC Candelas `— 150,000 _ 100.000 50.00a 5,000 —1,000 --- Soo 250 ENGINEERED DESIGN By: Daniel Lohman • File #203276B • 27 -Dec -19 Danville Skatepark Danville, CA Map indicates the maximum candela an observer would see when facing the brightest light source from any direction A well-designed lighting system controls light to provide maximum useful on -field illumination with minimal destructive off-site glare. High Glare: 150,000 or more candela Should only occur on or very near the lit area where the light source is in direct view. Care must be taken to minimize high glare zones Significant Glare: 25,000 to 75,000 candela Equivalent to high beam headlights of a car. Minimal to No Glare: 500 or less candela Equivalent o 10OW incandescent light bulb muc;rm 7�11111 We Make It Happen-. Not to be reproduced in whole or part without the wdtten consent of Musco Spon. Lighting, LLC ©1981, 2019 Musce Sports Lighting, LLC rr�4k�m 5POHN RANCH 8 KA.r9PA9 K0 DESIGN REPORT DIABLO VISTA PARK SKATEPARK TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 Diablo Vista Park (24,334 sf design as shown) Estimated construction cost: $1,915,850.00 Cost per square foot (skatepark only): $65.45 Cost per square foot (all-inclusive): $78.73 DESIGN, BUILD, COME TOGETHER, The design shown has not been fully realized from a skate perspective and is being presented to better understand site impacts and integration. The Diablo Vista location has topographical design challenges. The ability to meet optimal course size will require grading, tree removal, and retaining walls that would add significant cost to the overall construction. Functionally this approach might still be limited and a less than optimal sized course achieved. The design shown shows fill being removed from the top of the hill and pushed down and supported by retaining walls. We've also allocated area on the opposite side of the existing pedestrian path to gain space and create a secondary bowl area. This is a similar concept as to the Sycamore Valley B design. Bisecting the skate areas is relatively unusual and in the case of Diablo Vista would essentially convert the pathway into skatepark and skatepark-specific access. We did not assume the ability to remove and make use of the existing water feature deck and pathway area(s). If that were possible, it would give the ability to change the layout plan and require less downhill construction. This location is difficult to patrol and observe activity. A security camera system might be desirable. This is not currently included in our pricing estimate. The access path including through the tot lot area would be the logical patrol route. The inclusion of bollards would help to control rider traffic on the pedestrian path, however this also limits the ability to patrol the area. P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH,COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 �i SPOHN RANCH S K A I E P A R K S COST ESTIMATE DIABLO VISTA PARK SKATEPARK TOWN OF DANVILLE, CALIFORNIA DECEMBER 17, 2019 DESIGN, BUILD, COME TOGETHER, SCOPE OF WORK: ESTIMATED COST: DESIGN DEVELOPMENT, CONSTRUCTION DOCUMENTS & ENGINEERING $45,000.00 MOBILIZATION & GENERAL CONSTRUCTION REQUIREMENTS (WILL CHANGE DEPENDING UPON SOILS REPORT & ACTUAL SITE CONDITIONS) $65,000.00 SITE PREPARATION, DRAINAGE & EARTHWORK $225,000.00 STEEL COPING, EDGE PROTECTION & GRIND RAILS $117,000.00 CONCRETE SKATE ELEMENTS/TERRAIN $600,600.00 CONCRETE FLATWORK $243,000.00 INTEGRAL COLOR $52,000.00 LANDSCAPING & IRRIGATION $60,000.00 RETAINING WALLS $200,000.00 SHADE STRUCTURES $80,000.00 LIGHTING $100,000.00 FENCING $90,000.00 PERFORMANCE & PAYMENT BONDS $38,250.00 TOTAL ESTIMATED COST: $1,915,850.00 ASSUMPTIONS: Estimate assumes Owner to provide water access within 150' of skatepark footprint (minimum %" line with sufficient pressure/volume) • Estimate assumes Owner to provide power access within 150' of skatepark footprint (minimum two 20 -amp circuits (110v)) • Estimate does not include permit fees, traffic control measures, flagmen • Estimate does not include 3rd party testing/inspections • Estimate does not include tree removal • Estimate does not include any work not expressly described in scope of work P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH.COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 (ncn � � 7 2,384 SQFT 18,215 SQFT 20,599 TOTAL SQFT VY� Qat ZW MI. - 2,384 r 0< dYx N y r -41 - 1*4 a; �f • � r� ,sad • �'''r�,_ ..f } .. _ s� _. _ .. _ - �, _" ,{e,. _ °�• ,:ice � , �.,. _ 'f;�- r � �7L � � ��_ -:�j Y � � � .ice �rT - � �:'`"!;- ;�• �� ti;. � _ `-�' � Tye 3,�3',•�1 ��" _ _ �` ��. r r �, �. _ , a... i �' �r � - _ '`� A - � � � i � � l`�� �F � ��-� .. .- - .: r�:::� _ � =S�x L P `�� '�`'-� f '_ �■ms's .� } �+,�� � �..F R r �yL IN �t eV &A.Awlx, rr-�4�� SPOHN RANCH S 9 A T E P A R R S DIABLO VISTA CONCEPT B FOOTPRINT DESIGN, BUILD, COME TO:GEI•HER. Design concept A (as shown in renderings) left intact the majority of the mosaic water sculpture area including the elevated mound and pedestrian path connection. It also left the existing rear pedestrian path connecting the ball fields and the tot lot play area. This was done to minimize impact on existing infrastructure and not remove or displace an existing park element. However, this approach to the design and construction comes with challenges and limitations. For the benefit of weighing the pros and cons we show an alternate "B" concept footprint (without skate design or rendering). This B concept encompasses the majority of the grass mound, the top circular concrete pad, the pedestrian path and pedestrian path connection. This would entail leveling a portion of the mound to shallow the topography. It would leave intact all of the tot lot play area, and a majority of the mosaic snake/dragon, landscaping and trough. This is just a spatial exercise and any exact line of delineation is very flexible. The immediate benefit of the alternate footprint is to make a consolidated space with more conducive grading for an integrated skate course. This would pull the park forward and be able to achieve the targeted park size without spilling down the rear slope. This would not only reduce the need for and cost of hillside construction but it would make the construction site more readily accessible and more construction -friendly. In the process it would also reduce sightline obstacles and and make the space easier to observe and patrol. Another goal is to eliminate the pedestrian thoroughfare though the tot lot. By creating a new access point to the side of the tot lot, this will draw potential wheeled traffic away from the area. We've also identified a fence line to establish a physical boundary. This will also help limit skatepark activities from bleeding out into the undeveloped park perimeter. We aren't showing this as gated or having a controlled access. I P 626-330-5803 1 F 626-330-5503 1 W SPOHNRANCH.COM E INFO@SPOHNRANCH.COM 1 6824 S CENTINELA AVE. LOS ANGELES, CA 90230 _ -MAIN ACCESS POINT • f •`. .' , . -, — -- - - -- . TOT LOT PATHWAY (PROPOSES i `• FENCINGPROPOSED ] _l • • j91ry 4`6p FENCING EX)IMNG PATHWAY y' CONCEPT B AbANTRY.4 ,' r FQQTPRENT f JF, . •`,' i'� '" " 1 PRO>y[YBEINGQ 20,000 SQFTr J �,. r 6 r• if� % , •`{• FENC,•. � � �r .CONCEPTA J'y�' •' ,. FOOTPFIINT PpR %F . ! •, �•; ? r !•'. .``. 'COMPARISON =; �` is °-:• y�, .,�i,� � . �:f ,'�i IzN Uy- za I pad"- I aYx. U)rn r l "Small Town Atmosphere Outstanding Quality of Life" DATE: January 3, 2020 TO: Joseph A. Calabrigo, Town Manager Rob Ewing, City Attorney Henry Perezalonso, Recreation, Arts & Community Services Director FROM: Tai J. Williams, Assistant Town Manager Steven Jones, City Engineer Dave Casteel, Maintenance Services Director RE: Multi -Sport Skate Park - Constructability and Cost Analysis Consistent with the direction provided by Town Council at its October 15, 2019 meeting, Town staff has worked with Spohn Ranch Skate Parks (Consultant) to further evaluate potential skate park sites at Diablo Vista, Osage Station and Sycamore Valley Parks. This subsequent evaluation is contained in the Consultant's Skate Park Feasibility Study Amendment dated December 17, 2019. This memorandum represents an in-house review of each potential park location identified in the Feasibility Study Amendment based on the Town staff's knowledge of each park site location, its infrastructure, and access constraints, as well as local area construction costs. DIABLO VISTA PARK This potential location could accommodate an approximate 24,334 square foot multi - sport skate park located on the knoll and south -facing slope adjacent to the existing children s play area and water feature. This area currently features a concrete pathway that loops around the backside of the children's play area, a passive turf area and picnic tables. It should be noted that the consultants design concept "did not assume the ability to remove and make use of the existing water feature deck and pathway area(s)". This is the area located above and to the south of the serpent water feature, i.e. the knoll. The consultant goes on to state that use of this area "would give the ability to change the layout plan and require less downhill construction." Staff believes that this would be the preferred approach to the development of this site and that should the location be 510 LA GONDA WAY, DANVILLE, CALIFORNIA 94526 Administration Building Engineering & Planning Transportation Maintenance Police Parks and Recreation (925)314-3388 (925)314-3330 (925) 314-3310 (925)314-3310 (925)314-3450 (925)314-3700 (925)314-3400 ATTACHMENT B selected, the existing use of the area would be changed to accommodate the skate park, rather than attempting to retain the existing features. This location offers a number of advantages. It is proximate to the children's play area, the park restrooms and the main parking lot serving the park. Among the three options under consideration, it also provides the greatest level of separation from adjacent uses including existing homes, owing to its location within the park. This also means that from a security standpoint, the site is less visible, both within the park itself as well as from the surrounding public streets. Construction access to this location would be via the terminus of the main (eastern) parking lot, near the park restrooms. This site would require grading and retaining walls as well as the relocation of an existing water main. Site drainage can be connected to an existing storm drain system nearby. Construction activities would be minimally to moderately disruptive to other uses and activities occurring at the park. Taking into consideration additional design costs associated with engineering (grading and retaining walls), electrical systems, and bioretention areas, staff estimates the total project cost to be approximately $2.19 million. OSAGE STATION PARK This potential location could accommodate an approximate 25,344 square foot multi - sport park (exclusive of the immediately adjacent reconstructed pathways) located on a flat under-utilized triangular grass area immediately east of the Towns tennis courts and west of the hardcourt area at Charlotte Wood Middle School. Location -wise, the site is located adjacent to Charlotte Wood Middle School and the nearest homes are located approximately 250 feet to the south. Advantages offered by this location include proximity to park restrooms, site visibility and fairly close proximity to parking and drop off areas. Construction access to this location would be from the southern (Orange Blossom) parking lot at the park. Construction activities would be minimally to moderately disruptive to other uses and activities occurring at the park. As with Diablo Vista Park, this site requires relocation of a water main. This location also poses some drainage concerns. In its current condition, this is a flat site that is difficult to drain. This could be exacerbated by the excavation required in order to construct the skate park feature. As a result, staff believes that it would require the installation of a sump pump to ensure that the location is not susceptible to ponding. The installation and on-going maintenance costs associated with operating a sump pump is a significant unknown variable. Taking into consideration additional design costs associated with engineering, electrical systems, sump pump, bioretention areas and replacement of the surrounding pathways, staff estimates the total project cost to within an approximate range of $2.2-3.3 million. SYCAMORE VALLEY PARK This potential location could accommodate an approximate 20,665 square foot multi - sport park located between the smaller upper pond and picnic benches west of the bocce ball courts. Location -wise, the site is centrally located and some distance removed from adjacent uses that surround the park. The nearest homes are located approximately 400 feet to the south, on the south side of Camino Tassajara; school and church/ synagogue uses are located on the east and west sides of the park approximately 400 to 600 feet away. The site affords good visibility and reasonable proximity to park restrooms, parking and drop off areas. Similar to Diablo Vista Park, this location would require some grading and retaining walls. Construction access to this location would need to take place directly from Camino Tassajara, requiring the construction of a temporary gravel road across the south facing turf meadow, to the site. This access would require special traffic control measures. Construction activities would be moderately to significantly disruptive to other uses and activities occurring at the park. Taking into consideration additional design costs associated with engineering, electrical systems, bioretention areas, and higher construction related costs (temporary gravel road, traffic control, etc.), staff estimates the total project cost to be approximately $2.5 million. Exhibit 1: Multisport Park - Site Analysis Summaries 4 M LA a a m 7J r1 z m 7 rD rD a O L'I ro x r+ O m a - O C X rD O rD W 3-9h O D A lir co (p R+ O O r Ldi r) v iA DJ QO •+ r1 rrn QC rD m �. rD kA rD y 3 rD ^� O - C .� o✓ � 3 � I Y} a (/f a • n s O s � D v �• ov rD YYi J y O C, O W — ^ A -a T m QQ � C r9 rD rD O O 7 � .- _ C W ^ 00 m .* m Qq y a N rp 3 C 3 �+ � lOi oa 0 In n 3 V) v X v rD al ^ •• D p' co _cu77�* rD 3 3. O Qj f1 < `< c nl < w OM V o ^ O O O o o r D 3 O O o P1 v O JJ ro '" o O O G M O CJ n C 3 L,) _ � (p Ol 3 M rD 0 � CL a ^ ar A F Lon N M LI) O Y v �• ov rD YYi J y Ln C, O W ^ A ^ o A LA O O v, O � .- A F Lon N M LI) O m O N Ln C, O W ^ A ^ o A LA O O v, O � .- _ C W ^ 00 m .* m rD v r.+ D a N Ln a C a) rmOLA ar v ^ V) T rD 3 3. K � Qj f1 `< c E _ -- -�I..• ...1. Ir yam. I t L: it � . n Cy - • l D ' m '} a V) a a n c D O i D T a n z z �n r1 to O m rp a pl/� rD < n X :3 � T C v O O LA N NO i O y� Lr en Ln a rp CD m ^ 3 ro O -MLn _ r+ O c � _ 2 N O d rD rDD -n m �} - �r LA DLr '+ ^ n o �n o o C l � p o 0 0 o v+ 4J — o m • rp n rD rp fD rp I J O C py 0 0