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Staff Report 5.A 12/01/2008 Part 4
PRELIMINARY DRAINAGE REPORT R.C.E. 49302 P.L.S. 6368 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 PRELIMINARY R ,r REPORT CapacityCalculations • PINNACLE RIDGE SUBDIVISION 2762 "1" Street Petaluma, California A.P.N. 019-401-019 Job No.: 03836 May 14, 2008 Prepared by: VV Checked by: SJL RECEIVED NOV @ 6 2008 OOIANNITY DEVELOP vIEWT DEPART1\AG\ T INTRODUCTION In this report, the capacity of the existing 24 -inch storm drain pipe on I Street was checked. The location of the existing 24 -inch pipe and the existing catch basin was shown on the enclosed map of the Pinnacle Ridge site. The pipe was built in as a part of the improvements on the Westridge Development, and was intended to be used for future developments along I Street. The objective of this report is to check weather the existing 24 -inch storm drain pipe has a sufficient capacity to receive and safely convey flows from the Pinnacle Ridge site. Westridge Drainage Study, prepared by Oberkamper & Associates, Inc., (1990) was used as a reference in the calculations. 71 x Sam \ i \ /I�_, / J I �� ✓ % I i I \ I STEVEN J. LAFRANCHI & ASSOCIATES, INC. JOB ?/g//�,C( - o363.G CIVIL ENGINEERS - LAND SURVEYORS SHEET N� of PETALUMA MARINA BUSINESS CENTER 775 Baywood Dr., Ste. 312 CALCULATED BY VL/ DATE CJ6�-200.5— Petaluma, CA 94954 TEL. (707) 762-3122 FAX (707) 762-3239 CNECKEDBY DATE SCA' F ` IAAIu -6 tE- S74Dy'' (�3y' n73 ate 4� 2 QL 1lJG�LrcSf�-u . l 9 'fel EI P(ti1(/iCL� S I7 ?7R l J✓ .: J& Col✓Sl D AAA oFFSi T D IIiC 11-� f IXrJ'T DGG 4t! tl✓+G=. 7AP oJt`I C f1q 1(f77HA-7Eb 73 `l 1 c7L /1 B,7AC) I Project Description Project File Worksheet Flow Element Method Solve For Worksheet Worksheet for Circular Channel c:\haestad\fmw\project7.fm2 vvv Circular Channel Manning's Formula Full Flow Capacity Input Data Mannings Coefficient 0.013 Channel Slope :000 ft/ft Diameter 4.00 in Results XIS(1JI.G' rp �e Depth ft `1(,L1ti Discharge 50.58 cfs Flow Area .14 ft' C4whCAT-� Wetted Perimeter 6.28 ft Top Width 0.00 ft Critical Depth 1.98 ft Percent Full 100.00 Critical Slope 0.046141 ft/ft Velocity 16.10 ft/s Velocity Head 4.03 ft Specific Energy FULL ft Froude Number FULL Maximum Discharge 54.41 cfs Full Flow Capacity 50.58 cfs Full Flow Slope 0.050000 ft/ft c i 06/01/05 FlowMaster v5.15 02:40:07 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755-1666 Page 1 of 1 RATIONAL METHOD DRAINAGE STUDY V/vt-� •t:�r g0 }= It 1 ' t Date i-'t'..Y�•tl Subject '.'`J f,; t ir- L.;,} C� Sheat No. of ;d. By, Date Storm Freq. 1CJ % It'd yr. Job. no, EL/Time-o` Conc. — pq -A K6AC iKAAC Design Point (in m nutes) rea 510 Renarks of ;ravel Total i p Conc. istance Time Time Total 1 /'�/ i'.. T•� .,',p i, Z.ti2 ,.. .` ,Z _O _,.�^�p. -T C -..c• Z' C% 1 1-7.-7 c _ . Z C' -`C [ (, . 7.4 �1, 0 7 0.1Z 04 1-1.G.i I'14 i 23 /••.' _ li-I-i 14, .-I Q Z.lCL! ,i -- ........ IIB -I Rev. 7/64 l COMPUTATION FORM FOR UNDERGO ND PIPE DRAINAGE SYSTEMS �Ju�C fyC{ CATEGORY PIPE DATA FLOW DATA HEAD LOSSES CONTRA[- LNIANO[- Si NDS a SUMMA- VCoElf.If VELOCITY INCTION fLOSSN [NLROY NICAAULIC IML[T Inv[RT ITItl LCNOTN OIAu 6T CR ARCA FLOW VELOCITY TION IKNY OTN[A TION OP COLIC MLAO SLOPE LOSS 1011 IOti LOSS[S LOfb[f OAAOL OAAbC ONgI[ 6AALt SYYOOL L O A A 0 V Y=C9 I ]Iyi60002 NI -SIL NC NC N0 SN [O.L NOL. C.0 INV - \\ef.f] UMIT f ILI.-I It- II IIC CIV K IIV�c It /t/CI It 11 II II R [L[v INR [Llv N! PL ,f [LCV IN R [L[v IH IT, I^illi L,rl�l, [t ' -'9 ..1IOC-.y:y9 I p . c - I'- 0.(:ILIti S i co- - ------------ ------------------ ------- - --- - --- __IQ7. LJ'._ 1[; E. -1G YVLL I Cf 17r ?..) I..14 ^r•I! •CLI -- I r_,, r.to .lr�, -- -- i -l✓ 71..l IJL'- `- -lo T••i 1..11 ( i 7LI C'[ !-I'i G.O Z.I `♦ .014 !'.- _ .. r' r0'. I-II r`. :1-'t' .1 ,1_L II. ra• a; El'-.6/il.l -.\L")•lV 1 1 "1-.: I . - ir; 11-;'-'•� 111 ..I __.-_I 1-•�yt-! il•l ''r/__ -_ I ill. I J I I I '1. /. I.I II r I•-. �. 1 _ L v I I 1 — — - - I I C9iLC:'BY"•' T`-..,r.DATEL_;.•,''•1� PROJECT ....,. I. ra- SNEET NO._C'_ CNKD..BY DATE_ JOB NO. ..L - ,.m,,, -u. 'vw I,n •..:!-.. .I rli`SA rl�i'.. x�L.• 1'.i_ _ _ .. S t_.. Sam _ CZ oo-11,COMPUTATION FORM FOR UNDERtTrc . D PIPE DRAINAGE SYSTEMS Cx�ATEGOftY PIPE DATA FLOW DATA HE CD LOU ES 5I eLx vnnuNS NAXXIHG! j VELOCITY f0KT1ON FRICTION CON'RIC- apLARGC- ECHOS 9 9UNYA- [HCRGT HYMAULIC IXLFT IXVFRT IiFH L[HGTp p1A4CTCR AALA� FLP[ IYSLOG[T HCAd I [LOP¢ LOS] I LO 4 OS! _ LOSS[l TLOISC! GnAOF GHIIK GRAD( GRADE lTVbCL L O A n O V V", 51 .4,00 a]� HS•]IL H[ N[ 110 MH [OL "GL- I ^.6 INV. ' Q!._3 2 ! fl/KK fl/OOc fl--- F%f� - --II fl II -- 91-- If ¢LCV IH IT f ILCV RI fL ¢L¢V IN f [L[V W FT. FL[uC NTUNIT Ft TI _ fl ] ra C-LI I - i=(�. -7 �6 - - - -I� -rF 1C•6..I'( ;OE Ltz z 0. !, err 1' ;. c' r:.cq p.�n1 It 5Ll ''I '1� �,: ,,::• .'{5 v- 1�'.r4 1_i4.1°j 1.4D Il1.UD IDcl.0 I( r. r. 1 L ✓ - ilvE — I - __:lu rI ': .J ^. G20� I .7 C, I vL I I f.". "l3'I — �9_ III ,Z O 1 i 1 .F-cl III.SV I:`r L-1 '` II-i 'i 17 Il U r 2rP ULL InL _ ! __ �_�"L� 1 1.014 IG. I _r c: o•:nF I I.0-I IL I! _- I!, u [l.^ 1.2G - 1. C'G ..,I.!L,`I Z .1G ,7= 1.r,,r.v Irl CALC. gY`c.•C'P`-PROJECT rJ:--...:I:+r , SHEET NO, =LIF- I C I ! CHKD.•BY_ DATE JOB N0. R.C.E. 49302 WATER SYSTEM DISTRIBUTION CALCULATIONS STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 - Pinnacle Ridge 2762 "I" Street Extension Petaluma, CA 03836calcs covers.doc P.L.S. 6368 REC,EN K NOV 0 6 2008 COMMUNITY DEVELONJE IT DEPARTiNIENT TABLE OF CONTENTS Project Overview .............................. Methodology..................................... City Pump Curve ........................... Domestic Water ............................ Static Pressures ......................... Residual Pressures .................... PipeSize .................................... Design Methodology ................. Fire Water ..................................... Static Pressures ......................... Residual Pressures -1500 GPM. Residual Pressures -2250 GPM. Pipe Size and Equipment.......... Design Methodology ................. Fire Sprinkler System ................... Static Pressures ......................... Residual Pressures .................... PipeSize .................................... Design Methodology ................. Conclusion ........................................ Appendix #1: Existing Water Pressure & Flow Provided By City Appendix #2: Water System Node Results -Domestic -Fire -Fire Sprinkler Appendix #3: Hand Calculations -Hazen Williams -Preliminary Water Distribution Appendix #4: Manufacturer Specification -8" DDCV — Febco 8064 -Fire Pump House -Pipe Head Loss/Equivalent Length Appendix #5: Hand Calculation -Bemouilli Equation -1- Project Overview The proposed project is located in a pressure deficient area. The following report determines that air gap pumping systems will be required by the City for all residences. We will be sizing the air gap pumping systems next to each proposed residence during the improvement plan design. For the domestic water system and fire sprinkler system, this report evaluates if any lots will require the air gap pumping systems to be placed at a lower elevation than the residence's garage. For the fire suppression system, this report determines a fire pump system will be required and the best site location for this building is located at the canoe turnaround. Methodology City Pump Curve The City system pumping information was provided by Curt Bates of the City of Petaluma. The information provided by Curt is provided in Appendix #1 and is summarized as the following at the existing blow off: Pump Curve Information Static Pressure(P, 51.41 psi Test Residual (Pr) 45.38 psi Delta Pressure (Hf) 6.03 psi Test Flow (Q0 1500 gpm Based off of this information provided by the City, the following system pump curve was developed Fire Flow Graph 60S, �— - - — street residual 50.0 40.0 - d LL 30.0 — 9 a = 20.0 10.0 - 0.0 60 1000 1500 2000 2500 Flow in GPM -2- Domestic Water Appendix #2 provides static and residual pressures using the existing City water system pressure for the proposed subdivision at the water meter and at the residence. The following summarizes our findings. Static Pressures Static pressures before the water meter ranged from 15 to 43 psi. Static pressures at the residences ranged from —5 to 43 psi. We will design using Class 150 piping for the proposed project. Residual Pressures Residual pressures before the water meter ranged from 15-42 psi. Pressures at the residences ranged from —17 psi to 31 psi. Lot 6, 7, and 8 will require the air gap systems immediately following the water meter since the pressures were negative. Since the residual pressures at each residence is less than 50 psi, an air gap system will be required for every lot. Pipe Size The water main will be 12 inches and the laterals will be 2" with 1" water meters. Design Methodology Hand Calculations are provided in Appendix #3 that provided a rough estimate of maximum and minimum pressures throughout the site. A more detailed analysis was then done using the following methodology: Static Pressure The static pressure for each node was determined by reducing the pressure from the City connection to the node by the change in elevation. Residual Pressures The residual pressure for each node was determined by reducing the static pressures by the pipe head loss. The velocity component of the Bernoilli equation was ignored since the velocities associated with the domestic water use is around 0.31 fps. The determination of pipe head loss was obtained from the Goulds Pumping guide which compiles the losses per 100 feet of pipe PVC piping. The determination of equivalent lengths for bends, tees, etc. was obtained using a table formulated by Goulds Pumping guide that is attached in Appendix #4. -3- Fire Water Appendix #2 provides static and residual pressures at each fire hydrant using the existing City water system pressure for the proposed subdivision. The following summarizes our findings. Static Pressures Static pressures at each fire hydrant ranged from —3 to 42 psi. Class 150 piping will be sufficient for the proposed project. Residual Pressures -1500 GPM Residual pressures at the fire hydrant ranged from —11 to 36 psi so a fire pump will be required. Specifically, FH #4 and 5 will require a fire pumping system in order to meet the City requirements of flow and pressure. Residual Pressures -2500 GPM When the pump is installed, the City may require the system be testing at 150% of its designed flow rate of 1500 GPM. We have verified the suction pressure at the pump house will be positive so the proposed system will work for this testing. Calculations are provided in Appendix 2. Pipe Size and Equipment The water main must be a minimum of 12 inches. An 8" DDCV (Double Detector Check Valve) will be installed before the fire pump house. Design Methodology Hand Calculations are provided in Appendix #3 that provided a rough estimate of maximum and minimum pressures throughout the site. A more detailed analysis is provided in Appendix 2 using the following methodology: Static Pressure The static pressure for each node was determined by reducing the pressure from the City connection to the node by the change in elevation. Residual Pressures The residual pressure for each node was determined by reducing the static pressures by the pipe head loss. The velocity component of the Bemoilli equation was not ignored since the velocities associated with the domestic water use is around 0.17 fps. The Bemoilli equation was used in determining the pipe head loss. I have included a sample calculation that was used to build the information in tabular format in Appendix #5. -4- Fire Sprinkler System For the fire sprinkler system, we are assuming that we will need 60 GPM to be available for each home and that the air gap systems on each home will boost the pressures to a minimum of 50 psi. Appendix #2 provides static and residual pressures at each meter and residence. The following summarizes our findings. Static Pressures Static pressures before the water meter ranged from 15-43 psi. Static pressures at the residences ranged from —5 to 43 psi which is similar to what we found for the domestic water. We find that Class 150 piping will be sufficient for the proposed project. Residual Pressures Residual pressures before the water meter ranged from 15-43 psi. Pressures at the residences ranged from —25 psi to 29 psi. Lot 6, 7, and 8 will require booster systems immediately following the water meter since there pressures were negative. Since the residual pressures at each residence is less than 50 psi, an air gap system will be required for every lot. Pipe Size The water main will be 12 inches and the laterals will be 2" with 1" water meters. Design Methodology Hand Calculations are provided in Appendix #3 that provided a rough estimate of maximum and minimum pressures throughout the site. A more detailed analysis was then done using the following methodology: Static Pressure The static pressure for each node was determined by reducing the pressure from the City connection to the node by the change in elevation. Residual Pressures The residual pressure for each node was determined by reducing the static pressures by the pipe head loss. The velocity component of the Bemoilli equation was ignored since the velocities associated with the domestic water use is around 0.17 fps for the water main. The determination of pipe head loss was obtained from the Goulds Pumping guide which compiles the losses per 100 feet of pipe PVC piping. The determination of equivalent lengths for bends, tees, etc. was obtained using a table formulated by Goulds Pumping guide. -5- Conclusion Domestic Booster pumps will be required for Lots 5, 6, and, 7 which we will locate in the canoe turnaround area. A fire pump will be required for FH # 4 and 5 which we will locate in the canoe turnaround area. I have attached a proposed pump house schematic for the fire pump that includes a diesel driven back up in Appendix #4. The water main will be 12" and the house laterals will be 2". The water meters will be 1" and an 8" DDCV will be used before the water main feeds the fire pump house. -6- 037�� HASH FLOWRATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG OUTPUT SELECTION: THE FOLLOWING RESULTS ARE OUTPUT RESULTS ARE OUTPUT FOR ALL PIPES WITH PUMPS - CLOSED PIPES ARE NOTED RESULTS ARE OUTPUT FOR THE FOLLOWING PIPES 46 47 RESULTS ARE OUTPUT FOR THE FOLLOWING JUNCTION NODES : 239 240 5 VALUES ARE OUTPUT FOR MAXIMUM AND MINIMUM PRESSURES THIS SYSTEM HAS 243 PIPES WITH 186 JUNCTIONS 52 LOOPS AND 6 FGNS THE RESULTS ARE OBTAINED AFTER 7 TRIALS WITH AN ACCURACY = .00137 This simulation models the Zone 2 and Zone 3 water distribution 132 system subject to the average day demand in Fiscal Year 1987/88. -113.92 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -183.10 -.61 .00 .00 -1.17 -.85 47 239 240 -187.29 -.02 .00 .00 -.53 -.12 LINE 84 IS CLOSED 206 217 326 336.91 8.12 201.39 .00 2.15 2.62 LINE 221 IS CLOSED JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE --:�b 239 4.19 258.63 109.00 64.84 240 .00 258.65 109.00 64.85 MAXIMUM PRESSURES 323 2.96 402.56 115.00 124.61 324 .74 405.24 150.00 110.60 73 .00 261.20 19.00 104.95 325 .00 407.38 167.00 104.17 322 10.04 398.41 160.00 103.31 MINIMUM PRESSURES 23 .00 258.89 238.00 9.05 303 .00 393.97 370.00 10.39 302 .00 394.01 370.00 10.40 301 .00 394.03 370.00 10.41 243 .00 258.80 226.00 14.21 THE NET SYSTEM DEMAND = 1233.99 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 -92.03 104 753.21 132 85.23 204 725.50 211 -113.92 Page 1 HASH 213 -123.99 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 1563.95 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -329.94 A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00 THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE JUNCTION NUMBER DEMAND 239 1500.00 THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00033 979.13 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -100.14 -.20 .00 .00 -.64 -.28 47 239 240 -1600.14 -1.11 .00 .00 -4.54 -6.51 LINE 84 IS CLOSED 206 217 326 333.26 7.96 203.60 .00 2.13 2.57 LINE 221 IS CLOSED JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE -� 239 1500.00 250.73 109.00 61.42 '4!�- 240 .00 251.84 109.00 61.90 MAXIMUM PRESSURES 323 5.92 399.78 115.00 123.40 324 1.48 401.76 150.00 109.09 73 .00 261.00 19.00 104.87 322 20.08 396.78 160.00 102.61 325 .00 403.35 167.00 102.42 MINIMUM PRESSURES 23 .00 258.87 238.00 9.05 303 .00 393.87 370.00 10.34 302 .00 394.00 370.00 10.40 301 .00 394.02 370.00 10.41 243 .00 258.74 226.00 14.19 THE NET SYSTEM DEMAND = 3959.60 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 1474.31 104 979.13 132 734.45 204 906.97 211 -82.31 213 -52.95 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4094.86 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -135.26 Page 2 HASH FLOWRATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG OUTPUT SELECTION: THE FOLLOWING RESULTS ARE OUTPUT RESULTS ARE OUTPUT FOR ALL PIPES WITH PUMPS - CLOSED PIPES ARE NOTED RESULTS ARE OUTPUT FOR THE FOLLOWING PIPES 46 244 RESULTS ARE OUTPUT FOR THE FOLLOWING JUNCTION NODES : 239 800 5 VALUES ARE OUTPUT FOR MAXIMUM AND MINIMUM PRESSURES THIS SYSTEM HAS 244 PIPES WITH 187 JUNCTIONS , 52 LOOPS AND 6 FGNS THE RESULTS ARE OBTAINED AFTER 7 TRIALS WITH AN ACCURACY = .00136 This simulation models the Zone 2 and Zone 3 water distribution 104 system subject to the average day demand in Fiscal Year 1987/88. 725.51 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -183.10 -.61 .00 .00 -1.17 -.85 LINE 84 IS CLOSED 206 217 326 336.91 8.12 201.39 .00 2.15 2.62 LINE 221 IS CLOSED 244 239 800 .00 .00 .00 .00 .00 .00 JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE 239 4.19 258.63 109.00 64.84 800 .00 258.63 140.00 51.41 MAXIMUM PRESSURES 323 2.96 402.56 115.00 124.61 324 .74 405.24 150.00 110.60 73 .00 261.20 19.00 104.95 325 .00 407.38 167.00 104.17 322 10.04 398.41 160.00 103.31 MINIMUM PRESSURES 23 .00 258.89 238.00 9.05 303 .00 393.97 370.00 10.39 302 .00 394.01 370.00 10.40 301 .00 394.03 370.00 10.41 243 .00 258.80 226.00 14.21 THE NET SYSTEM DEMAND = 1233.99 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 -92.03 104 753.21 132 85.22 204 725.51 211 -114.11 Page 1 HASH 213 -123.80 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 1563.94 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -329.94 A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00 THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE JUNCTION NUMBER DEMAND 800 1500.00 THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00042 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -97.90 -.19 .00 .00 -.62 -.27 LINE 84 IS CLOSED 206 217 326 333.22 7.96 203.62 .00 2.13 2.57 LINE 221 IS CLOSED 244 239 800 1500.00 5.95 .00 .00 4.25 5.78 JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE 239 8.38 250.67 109.00 61.39 800 1500.00 244.72 140.00 45.38 MAXIMUM PRESSURES 323 5.92 399.77 115.00 123.40 324 1.48 401.75 150.00 109.09 73 .00 261.00 19.00 104.87 322 20.08 396.78 160.00 102.61 325 .00 403.35 167.00 102.42 MINIMUM PRESSURES 23 .00 258.87 238.00 9.05 303 .00 393.87 370.00 10.34 302 .00 394.00 370.00 10.40 301 .00 394.02 370.00 10.41 243 .00 258.74 226.00 14.19 THE NET SYSTEM DEMAND = 3967.98 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 1480.55 104 980.09 132 735.41 204 907.15 211 -82.11 213 -53.11 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4103.20 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -135.22 Page 2 21 h 54 550 J 490 4510 454 n,o,sFl 44E' v / / / I 44 / 437 / 440 i 333 "4 431' / 229 _ 221 225 N 1bP tl 102W C,- s 'o O w� s O o ,v 2 11M CQ N 778 � 7 �( n 012N Q) j3 Q Y It v 737 v azsv 42 747 i tl 02V T4s 5 38 Qui tp- 1pr, L t (lc z oI 1 �� Water Flow Data -Node 800 (Existing Blow off) Elevation_ 140 Flow 1500 60 0 Presidu.1 45.3 51.4 51.41 104.6189 118.71 118.7 Headloss/100 feet Flow Rates 1 2 6 8 -- — 110 ---_ _ 0 0 10 6.88 0.25 NA 2.2 2 Equivalent Length of Straight Pipe for DiFerent Fittings DDCV 1 18.46296 Water Meter 111.539 1 2 4 8 90' Ell 2.7 5.5 10 20 45° Bend 1.3 2.5 5 9.4 Gate Valve 0.6 1.2 2.3 4.5 Check Valve -Swing 8 19 43 DDCV 1 18.46296 Water Meter 111.539 Domestic Water Calculations Check Pipe Pipe Run 90°be 45° Gate Valve- Static Residual Velocity Node Elevation Flow Size Length nds bends Valve Swing Pressure Pressure (fps) C-1 164110 12 330 2 0 2 0 41.03641 41.03641 0.312069 C-2 171 110 12 380 2 0 2 0 38.00331 38.00331 0.312069 C-3 _ _ 190 110 12 500 2 0 2 0 29.77061 29.77061 0.312069 C-4 200 110 12 560 2 0 2 0 25.43761 25.43761 0.312069 C-5 216 110 12 730 2 0 2 0 18.50481 18.50481 0.312069, C-6 216 110 12 670 2 0 2 0 18.50481 i 18.50481 0.312069 C-7 110 12 670 2 0 2 0 18.504811 18.50481 0.312069 C-8 ---216 216 110 12 670 2 0 2 0 18.50481 18.50481 0.312069-L) 1-� b T9 C-9 223 110 12 760 2 0 2 0 15.47171 1 15.47171 0.312069' C-10 185 110 12 480 2 0 2 0 31.93711 IT. -9371 1 0.312069 C-11 160 110 12 310 2 0 2 0 42.76961 42.76961 0.312069 Check Pipe Pipe Run 9Tbe 45°ben Gate Valve- Static Residual Velocity Node Elevation Flow Size Length nds ds Valve Swing Pressure Pressure (fps) D-1 160 10 2 70 0 1 2 0 42.76961 31.14913 1.021315 D-2 164 10 2 85 0 2 2 0 41.03641 29.39697 1.021315 D-3 185 10 2 120 0 2 2 0 31.93711 20.25976 1.021315 D-4 202 10 2 70 0 0 2 0 24.57101 12.95324 1.021315 D-5 220 10 2 100 0 2 2 0 16.77161 5.115922 1.021315 D-6263.1 ( 10 2 300 4 2 2 0 -1.903618 -13.7998 1.021315 D-7 270 10 2 290 4 2 2 0 -4.893388 -16.7787 1.021315 D-8 262 10 2 270 3 1 2 0 -1.426988 -13.282 1.021315 D-9 220 10 2 140 2 1 2 0 16.77161 5.063384 1.021315 D-10 192 10 2 95 0 0 2 0 28.90401 17.25915 1.021315 _D-11 166 10 2 50 0 0 2 0 40.16981 28.5737 1.021315 Booster Pump Required canoe for - Lots 6, 7, and 8, each size is 10 -- GPM @ 70-80 psi Iim mmwvT - Q= MS C)Gph-_ Water Flow Data -Node 800 (Existing Blow )ff) Elevation 140 Flow 1500 60 0 Pmsidual 45.3 51.4 51.41 104.62 118.7 118.7 Quan. K�, 0.10 0 Ke 0.23 1 KF 1.75 0, Kc= 0.10 0 CH 150 C-900 PVC D= 12.00 inches R= 0.250 Headloss Fire Hydrant Assembly 11.55 feet DDCV (6") 27.69 feet DDCV (8") 18.48 feet K,,= Gate Valve K6= Bend KF Tee K,= Contraction/Expansion Fire Water Calculations (With No Pump) I Pipe Check Fire Pipe Run Gate Valve- Contraction Water Hydrant Static Residual Velocity Node Elevation Flow Size Length Bend Valve Tee Swing /Expansion Meter DDCV Assembly Pressure Pressure (fps) FH -1 147 1500 12 150 1 1 1 0 2 0 0 1 42.29829 36.03873 4.255 FH -2 ! 169 1500 12 380 1 1 1 0 2 0 0 1 32.76569 25.55788 4.255 FH -3 187 1500 12 490 1 1 1 0 2 0 0 1 24.96629 17.30496 4.255 FH -4 209 1500 12 630 1 1 1 0 2 0 0 1 15.43369 7.195166 4.255 FH -5 251 1500 12 770 1 1 1 0 2 0 0 1 -2.764914 -11.58063 4.255 Pump - - - House] 215 1500 12 680 1 1 1 0 2 0 1 0 12.83389 9.389224 4.255 Elevation if required test at 1,500 GPM Ib>9 i� g► 'dS IZ•3 Fier V'N-Dkt&sQ= Z000C,�rw-- l Water Flow Data -Node 800 (Existin ) Blow oft) Elevation 1401 Flow 2250 60 0 PMSIdua 38.6 51.4 51.41 Kh= 89.1455 118.71 118.7 I I DDCV Water Meter Fire Hydrant Assembly I 27.69 18.48 11.539 11.55 Gate Valve 1 Kti Bend KF= Tee Kc= Contraction/Expansion Quan. 1 Kcv= 0.10 0 Kh= 0.23 1 Kr 1.75 0 K,= 0.10 0 C„ 150 C-900 PVC D= 12.0011nches R= 0.250 1 1 1 27.69 18.48 11.539 11.55 Gate Valve 1 Kti Bend KF= Tee Kc= Contraction/Expansion Fire Water Calculations (With No Pump) Pipe Check Fire Pipe Run Gate Valve- Contraction Water Equivalent Hydrant Residual Velocity Node Elevation Flow Size Length Bend Valve Tee Swing /Expansion Meter Length DDCV Assembly Pressure (fps) FH -1 147 2000 12 150 1 1 1 0 2 0 0 0 1 28.40029 5.674 FH -2 169 2000 12 380 1 1 1 0 2 0 0 0 1 17.25222 5.674 FH -3 187 2000 12 490 1 1 1 0 2 0 0 0 1 8.680207 5.674 FH -4 209 2000 12 630 1 1 1 0 2 0 0 0 1 -1.835722 5.674 FH -5 251 2000 12 770 1 1 1 0 2 0 0 0 1 -21.01765 5.674 Pump House 215 2000 12 680 1 1 1 0 2 0 0 1 0 0.213289 5.674 Elevation if required test at 2000 GPM Water Flow Data-Node 800 (Existing Blow off) Elevation 140 Flow 1500 60 0 (Presidual 45.3 51.4 51.41 104.6189 118.71 1 118.7 EHeadloss/100 feet I Flow Rates 1 2 6 8 60 6.6 0 0 10 6.88 0.25 NA 2.2 Equivalent Length of Straight Pipe for Different Fittings 1 2 4 8 90° Ell 2.7 5.5 10 20 45° Bend 1.3 2.5 5 9.4 Gate Valve 0.6 1 1.2 2.3 4.5 Check Valve -Swing 8 1 19 43 1 DDCV I 18.46296 1 Water Meter 1 11.539 I 1 I Fire Sprinkler Calcul :tions Check Pipe Pipe Run 900be 450 Gate Valve- Static Residual Velocity Node Elevation Flow Size Length nds bends Valve Swing Pressure Pressure (fps) C-1 164 60 12 330 2 0 2 0 41.03641 41.03641 0.170219 C-2 171 60 12 380 2 0 2 0 38.00331 38.00331 0.170219 C-3 190 60 12 500 2 0 2 0 29.77061 29.77061 0.170219 C-4 200 60 12 560 2 0 2 0 25.43761 25.43761 0.170219 C-5 216 60 12 730 2 0 2 0 18.50481 18.50481 0.170219 C-6 216 60 12 670 2 0 2 0 18.50481 18.50481 0.170219 C-7 216 60 12 670 2 0 2 0 18.50481 18.50481 0.170219 C-8 216 60 12 670 2 0 2 0 18.50481 18.50481 0.170219 C-9 223 60 12 760 2 0 2 0 15.47171 15.47171 0.170219 C-10 185 60 12 480 2 0 2 0 31.93711 31.93711 0.170219 C-11 160 60 12 310 2 0 2 0 42.76961 42.76961 0.170219 Check Pipe Pipe Run 90°be 450ben Gate Valve- Static Residual Velocity Node Elevation Flow Size Length nds ds Valve Swing Pressure Pressure (fps) D-1 160 60 2 70 0 1 2 0 42.76961 29.08829 6.127891 D-2 164 60 2 85 0 2 2 0 41.03641 26.85463 6.127891 D-3 185 60 2 120 0 2 2 0 31.93711 16.7544 6.127891 D-4 202 60 2 70 0 0 2 0 24.57101 10.96118 6.127891 D-5 220 60 2 100 0 2 2 0 16.77161 2.160859 6.127891 D-6 263.1 60 2 300 4 2 2 0 -1.903618 -22.8631 6.127891 D-7 270 60 2 290 4 2 2 0 -4.893388 -25.5669 6.127891 D-8 262 60 2 270 3 1 2 0 -1.426988 -21.2997 6.127891 D-9 220 60 2 140 2 1 2 0 16.77161 0.773866 6.127891 D-10 192 60 2 95 0 0 2 0 28.90401 14.57924 6.127891 D-11 166 60 2 50 0 0 2 0 40.16981 27.13194 6.127891 Booster Pump Required at canoe for _ Lots 6, 7, and 8, each size is 10 GPM @ 70-80 psi R.C.E. 49302 WATER SYSTEM DISTRIBUTION CALCULATIONS (2ND OPTION) STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 �► �+,�, T � �.'. S "`�; T E i!� it 1 �� j �., � �� T T s tai' PINNACLE RIDGE SUBDIVISION 2762"T Street Extension Petaluma, California APN 019-401-019 Job No.: 03836 October 2005 Prepared by: EK, VV Checked by: SJL P.L.S. 6368 R C NIE NOV 0 0 2008 WlkIMUNITY DEVELCPI9E1T DEPARTMENT PROJECT OVERVIEW This report is the second option for the Water System at Pinnacle Ridge. This report evaluates if the pump house suction pressure meets the design pressure required by the City in their comments dated August 31, 2005. SJLA has evaluated the suction pressure available before the fire suppression system and found it to be 24.2 psi. The attached calculations provide engineering calculations to support this finding. DESIGN METHODOLOGY Static and residual pressures were obtained from the City of Petaluma on August 31 that reduces the city water tank elevation from 258.9 to 253 feet. The residual pressure at the pump house was determined by reducing the residual pressure provided by the City at Junction 800 by the pipe friction loss, local loss at the double detector check valve, minor losses and change in elevations. The Bernoulli equation was used to determine the pipe friction loss. The velocity component of the Bernoulli equation was taken into account. See attached pages for hand calculations. I _ LoPjo-o,/AC 5t-)�TV wok/ = 26-8, oj P'A t2�1i� iLl �ilolJ �2�! ... �'P �. "� "1e`t $�; t L. �-'?�•�✓ 1 �f S"i�V 61 "r`�'7 �rJhJ-C� Q(6C fV78 �, 'eta MP Cu R VS 1iVP-a7,i ,4771O.1V (Al oD- 0c��� j T5= ` bLa ?Sf V),,7= 4 53e psi 04 CP -Pm Vis. ( (,c� ► pia —C ', 3, � x o. 6t 33 �}= ;=t 0, it 33 —� tJ.,�'f�, Gt�, ` 25b,o r—i" t PQ-{h4NIOQF DUCt/ ( a oq Q3 UG 04Ateck-L v %Gvla) _-2 ,ttf c(; - �tD�� 12" FIRE FLOW CALCULATIONS Hazen -Williams Formula: K,,„= Gate Valve V 11 6519 K,= Bend h` 1.318 x C„ x 80.63 KF= Tee Kc= Contraction/Expansion Summation of Losses: Friction & Minor Lasses psi From Intersection Of Gruvillia & I Street To Pump House: (gpm) (cfs) Quan. Q = 1500 3.34 K,,„= 0.10 1 CH- . C-900 PVC.. K,= 0.23 1 D = 12.00 inches KF= 1.75 1 50 K,= 0.10 2 L = 650 feet p" V = 4.26 ft/s 4.26 h` 1 1 1 6519 x x x 5 L 1.318 150 0.417 h 3.23 1 6519 x 0.0067 x 2.395 x 650 feet psi hL= 2.68 1.16 hm 0.64 0.28 h12"= 3.32 1.44 Summation of Losses: (from manufacturer, see chart on Page 5) Starting = 98.84 42.83 psi Residual = 55.83 24.18 - psi @ Pump House Suction Point ! ater Pressurel0-06-05.xls feet psi ZZ -Zi = 27.00 11.70 h12. = 3.32 1.44 hDDCV = 12.69 5.50 Htotaj = 43.01 18.64 (from manufacturer, see chart on Page 5) Starting = 98.84 42.83 psi Residual = 55.83 24.18 - psi @ Pump House Suction Point ! ater Pressurel0-06-05.xls 12" FIRE FLOW CALCULATIONS .2oolD G-PIV Hazen -Williams Formula: K,„= Gate Valve V 1 1 85,9 Kb= Bend h` 1.318 x CH x RB.Ba KF= Tee Kc= Contraction/Expansion Summation of Losses: feet Friction & Minor Losses Z2 -Z1 = From Intersection Of Gruvillia & I Street To Pump House: h12" (gpm) (cfs) hoocv = 12.69 Quan. Q = 2000 4.46 KG1= 0.10 1 C,— 150 C-900 PVC —K,= K, = 0.23 . - 1 D = 12.00 inches KF= 1.75 1 R= 0.250 Kc = 0.10 2 L= 650 feet V= 5.67 ft/s 5.67 1 1 1 B51 z h` 1.318 x x 150 0.4175 L 8519 hL= 4.30 x 0.0067 x 2.395 x 650 feet psi hL= 4.57 1.98 hm 1.14 0.49 hl2,.= 5.71 2.47 Summation of Losses: (from manufacturer, see chart on Page 5) psi psi @ Pump House Suction Point \A/afar Praccnra9 n -m -n. rlc feet psi Z2 -Z1 = 27.00 11.70 h12" 5.71 2.47 hoocv = 12.69 5.50 Htota = 45.40 19.67 Starting = 98.84 42.83 Residual = 53.44 23.16 (from manufacturer, see chart on Page 5) psi psi @ Pump House Suction Point \A/afar Praccnra9 n -m -n. rlc Dimensions (in Inches) W Vales SIZ2 3" 4" 6" 8" 10" A 25.06 30.06 40.06 50.81 59.56 B 42.19 49.19 61.19 73.94 85.69 C Max 18.87 22.75 30.13 37.75 45.75 0 3.75 4.50 5.50 6.75 8.00 E 4.50 5.00 6.00 8.00 10.00 F 11.00 11.63 13.00 14.50 18.50 G 7.25 8.31 11.00 13.00 15.75 It Is recommended that this unit be installed in a horizontal positron and that provisions for adequate drainage be made. Fight hand mount of bypass assembly is standard. Left hand mount is optional. Adequate space around assembly for maintenance work and testing is recom- mended. Model 16-4 Double Check Detector Check Back-flow Preventer 3" MODEL 16-4 let o t Be 166 240 320 400 FLOW -GPM y RF -. - j- 7- - 6" MODEL 164 � 41 . fn to 240 440 720 950 1200 FLOWoPM m -o 4•/ e`'•"MOD`EL 16-4 °g Pf� 400 860 t2c0 �iam 2000 l FLOW -GPM ieoc f 4" MODEL 164 to" MODEL 16-4 161 I i I I rl I I t 8 w 41 Ido 260 366 J00 500 Soo 1660 FLOWoPM 40� FLOW -GPM , NR -fialeC Flovt eal{3f.$ adopted 6y the ATenGan Wate+ Works AOSM131Idn and the New England Wald, Works Assoc;alicn. E -Model 164 (R-5197) CLAVAL CO. PO Box 1325 Newport Beach CA 92659.0325 Phone: 714-722-4800• Fax: 714.548-5441 CLA-VAL CANADA, LTD. CLA-VAL SA; 4687 Chnste Omre C.hemn des Hasanges 1 0eemsville, Onlano CH -1032 Romanell Canada Los 184 LauseMe. S.12allanc Phona; 904563.49'03 Phone: 4t.21-643-15-55 Fax: 905-5634040 Fax: 41-21-643-15.50 -3aTM1i0*;5 CUwµ 1 Wa pim;a¢ n Vsa Spacd'nronr wCWGlo m�y+.�van mnve WIVW. tl2-V81.CORI Represented By: FIRE FLOW CALCULATIONS R.C.E. 49302 P.L.S. 6366 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 PINNACLE RIDGE SUBDIVISION 2762 'T Street Extension Petaluma, California APN 019-401-019 Job No.: 03836 April 4, 2006 Prepared by: EK Checked by: RECEIVED Nov 0 0 2008 COMMUNTY DEVELOPMEK DENRTMEIff 1 .�II#III .'4ra `R 1. Determine Total Maximum Daily Domestic Water Demand Projection (MDD) =46,600 GPA (See Attachment Q, page 8) 2. Determine Peak Hour Demand =15 * MDD / 16 (Per California Waterworks Standard, Section 64554.A.2) =4,313 GPH 3. Determine Maximum Hour Demand (MHD) =4,313 GPD / 60 minutes =72 GPM 4, Determine Average Day Demand (ADD) =MDD / 12 hrs / 60 minutes =65 GPM (assumed 100 GPM for on site flow rates) 5. Determine ADD + Fire Flow =100 GPM+ 1500 GPM =1600 GPM The above calculations find the peak flow demand is found by summing the average day demand to the fire flow calculations for a total of 1600 GPM. N W i ATTACHMENT Q N of 3) WATER DEMAND PROJECTION WORKSHEET JOB TITLE CAL. BY JOB NUMBER CHKD. BY JOB LOCATION DATE A. RESIDENTIAL 1. Multi - Family with 1 Bedroom Units X 1.6 Persons =� Persons 2. Multi - Family with 2 Bedrooms Units X 2.5 Persons persons 3. Multi -family with 3 or more Bedrooms Units X 3.15 Persons = tf Persons 4. Single Family Units X 3.4 Persons = - Persons .;tLZ Persons X 80 GPD = Q([ i.i: GPD Projected B. OFFICE/COMMERICIAL sgft X 0.13 gpd/sgft=�J_GPD Projected C. HOTEL rooms X 185 gpolroom = GPD Projected D. RESTAURANTS seats X 30 gpd/seat = GPD Projected E. ALL OTHERS TP BE REVIEWED ON A CASE BY CASE BAST: t, GPD Projected LANDSCAPING WATER DEMAND PROJECTION `C, i sgft X 3.5 cuft of water /sqft of = j O o CUFTNR landscape per year To convert to GPD: '7 ?!;,Ux) cuftlyr X 7.48 gal/ X i yrt = ' t } {;;, GPD Projected cuft 365 days TOTAL DOMESTIC WATER DEMAND PROJECTION INDOOR+ LANDSCAPING PROJECTION -UL?rj GPD Projected XB -28 FOR 2762 "I" STREET EXTENSION Petaluma, California April -06 ASSUMPTION: MT. VIEW RESERVOIR IS HALF EMPTY IsGi�l'7_ i R.C.E. 49302 P.L.S. 6368 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 PINNACLE RIDGE FIRE FLOW CALCULATIONS (CITY WATER TANK HALF EMPTY) Hazen -Williams Minor Losses V 1 1 .9414 0.00 h 1.318 x C, R063 Roel 0.07 0.03 H KE, YNOTE A - KEYNOTE B H�,nDR , 0.0 gpm cfs 0.0 0.00 Quan. Q= 1600 3.57 KGS 0.08 1 C„= 130 C-900 PVC K 0.23 1 D= 12 inches K,,= 1.75 1 R= 0.250 KD= 0.66 0 L= 295 feet V= 4.54 ft/s 4.54x 1 1 3314x 1.318 x 130 0.4175) L 3314 h 3.44 x 0.0077 x 2.395 111 � x 295 Line Losses feet psi h,= 1.79 0.77 Minor Losses Summation of Losses feet feet psi HDcoc 0 0.00 HG,. 0.03 0.01 Hb= 0.07 0.03 H 0.56 0.24 H�,nDR , 0.0 0.00 HDNCIIA GEASSWHL1 0.0 0.00 Summation of Losses feet psi H 2.45 1.06 HZ 10.00 4.33 Starting= 42.83 psi Residual= 37.44 psi 4/4/2006 Keynote A (Refer to "Starting Residual Pressure Calculation") Keynote B Hazen -Williams Line Losses Minor Losses PINNACLE RIDGE CALCULATIONS (CITY NV ATER TANK HALF EMPTY) Summation of Losses feet Vx 1 1 0 0.00 h` 1.318 CH x W68 �< 0.15 HN= KEYNOTE B - KEYNOTE C HFE InD Nj U gpm cls 0.0 U0 Quan. Q= 1550 3.45 KGv 0.08 1 CH 130 C-900 PVC K,= 0.23 1 D= 8 inches K,, 1.75 1 R= 0.167 K�= 0.66 0 L= 35 feet V= 9.89 ft/s 9.89x ] 1.318 x 130 -109519 0.32 x L h,= 7.51 x 0.0077 x \f 3.092 111 8519 1 x 35 feet psi h,= 1.44 0.62 Summation of Losses feet feet psi HDGDc 0 0.00 HGv 0.12 0.05 He 0.35 0.15 HN= 2.66 1.11,5 HFE InD Nj U 0.00 HDISC➢ARGE ASSEM L 0.0 U0 Summation of Losses feet psi H,"4.57 1.98 HZ 4.00 1.73 Starting= 37.44 psi Residual= 33.73 psi Keynote B Keynote C 4/4/2006 —1r) -- Hazen -Williams CALCULATIONS PINNACLE RIDGE (CITY WATER TANK HALF EMPTY) \I 0519 h,= 7.51 x 0.0077 x 3.092 ! x 185 Line Losses feet psi h,, 7.61 3.30 Minor Losses feet Hocnc 12.69 0.5519 0.12 Il' 1.318 x C„ x Rosa 11 HDISCHARGEAs5£6BM KEYNOTE C - KEYNOTE D gpm cfs Quan. Q= 1550 3.45 Kms,= 0.08 1 C„ 130 C-900 PVC Ke 0.23 5 D= 8 inches K,E 1.75 0 R= 0.I67 KG= 0.66 0 L= 185 feet V= 9.89 ft/s 9.89 1 1 10519x 1.318 x x 130 0.3234 L \I 0519 h,= 7.51 x 0.0077 x 3.092 ! x 185 Line Losses feet psi h,, 7.61 3.30 Minor Losses Summation of Losses feet 11 22.17 HZ 12.00 Starting-- Residual= tarting=Residual= psi 5.50 0.05 0.76 0.00 0.00 0.00 (From Manufacturer, See Chart) psi 9.61 5.20 33.73 psi 18.92 psi Keynote C Keynote D 4/4/2006 ..,-1'3 -- feet Hocnc 12.69 Hry 0.12 H 1.75 HF 0.00 HDISCHARGEAs5£6BM 0.0 Summation of Losses feet 11 22.17 HZ 12.00 Starting-- Residual= tarting=Residual= psi 5.50 0.05 0.76 0.00 0.00 0.00 (From Manufacturer, See Chart) psi 9.61 5.20 33.73 psi 18.92 psi Keynote C Keynote D 4/4/2006 ..,-1'3 -- HM 2762 "I" STREET EXTENSION Petaluma, California April -06 ASSUMPTION: MT. VIEW RESERVOIR IS EMPTY ltsi'7'rl' R.C.E. 49302 P.L.S. 6368 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS -- LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWDQD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 _1a_ PINNACLE RIDGE FIRE FLOW CALCULATIONS (CITY WATER TANK EMPTY) Hazen -Williams Minor Losses feet psi Hm„c 0 0.00 H,,= t p 1.310 !�.85i9 x C„ x R0.69 0.07 0.03 HF KEYNOTE A - KEYNOTE B HFmelcvotcv.,= 0.0 gpm cfs 0.0 0.00 Quan. Q= 1600 3.57 KG 0.08 1 C„- 130 C-900 PVC Ka 0.23 1 D= 12 inches KTE,.= 1.75 1 R= 0.250 Ke= 0.66 0 L= 295 feet V= 4.54 ft/s 4.54x I 1 9 ,vx _ 1.318 x 130 0.4175 L 9319 h 3.44 x 0.0077 x 2.395 x 295 Line Losses feet psi Ii 1.79 0.77 Minor Losses Summation of Losses feet feet psi Hm„c 0 0.00 H,,= 0.03 0.01 He 0.07 0.03 HF 0.56 0.24 HFmelcvotcv.,= 0.0 0.00 HDMCIARGEA5 NI91r 0.0 0.00 Summation of Losses feet psi H, 2.45 1.06 Hz 10.00 4.33 Starting= 36.80 psi Residual= 31.41 psi 3/15/2006 Keynote A (Refer to "Starting Residual Pressure Calculation") Keynote B I 1a Hazen -Williams Liue Losses Minor Losses PINNACLE RIDGE CALCULATIONS (CITY `NATER TANK EMP'T'Y) Summation of Losses feet V 1 1 0 0.00 HG„ 1.318 x CH x Ro.s3 )8519 /1 0.15 HF KEYNOTE B - KEYNOTE C HF,,,,r MMMrn0.0 gpm efs 0.0 0.00 Quan. Q= 1550 3.45 KGS 0.08 1 CH 130 C-900 PVC K,= 0.23 1 L7= 8 inches K,k� 1.75 1 R= 0.167 K�= 0.66 0 L= 35 feet V= 9.89 ft/s 9.89 1 I esisx iL 1.318 x x 130 0.3234 L h 7.51 x 0.0077 x 3.0921 x 35 feet psi hL 1.44 0.62 Summation of Losses feet feet psi HmD,, 0 0.00 HG„ 0.12 0.05 He 0.35 0.15 HF 2.66 1.15 HF,,,,r MMMrn0.0 01.00 HD6cj,A GeA SGh0Ll 0.0 0.00 Summation of Losses feet psi H,�= 4.57 1.98 Hs 4.00 1.73 Starting= 31.41 psi Residual= 27.70 psi Keynote B Keynote C 3/1512006 lG CALCULATIONS PINNACLE RIDGE (CITY RATER TANK EMPTY) Hazen -Williams Minor Losses V 1 I as 19 0.12 11` 1.318 x C„ x Baca HFmr..m,mri 0.0 Hnucxeaceessaj,,Li KEYNOTE C - KEYNOTE D gpm e£s Quan. Q= 1550 3.45 K�� 0.08 1 CN 130 C-900 PVC K,= 0.23 5 D= 8 inches K, 1.75 0 R= 0.167 K,= 0.66 0 L= 185 feet V= 9.89 ft/s 9.89 I 1 �.9.s 19x 1.318 x _. x 130 0.3234 L 9519 (hL 7.51 x 0.0077 x 3.092 x 185 Line Losses feet psi h, 7.61 3.30 Minor Losses Summation of Losses feet HL 22.17 HZ 12.00 Starting-- Residual= tarting=Residual= psi 5.50 0.05 0.76 0.00 0.00 0.00 (From Manufacturer, Sea Chart) psi 9.61 5.20 27.70 psi 12.89 psi Keynote C Keynote D 3/16/2006 feet Ha 12.69 H 0.12 Hti 1.75 HF 0.00 HFmr..m,mri 0.0 Hnucxeaceessaj,,Li 0.0 Summation of Losses feet HL 22.17 HZ 12.00 Starting-- Residual= tarting=Residual= psi 5.50 0.05 0.76 0.00 0.00 0.00 (From Manufacturer, Sea Chart) psi 9.61 5.20 27.70 psi 12.89 psi Keynote C Keynote D 3/16/2006 Provided By The is 057,71 HASH FLOWRATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG OUTPUT SELECTION: THE FOLLOWING.RESULTS ARE OUTPUT RESULTS ARE OUTPUT FOR ALL PIPES WITH PUMPS - CLOSED PIPES ARE NOTED RESULTS ARE OUTPUT FOR THE FOLLOWING PIPES : 46 47 RESULTS ARE OUTPUT FOR THE FOLLOWING JUNCTION NODES : 239 240 5 VALUES ARE OUTPUT FOR MAXIMUM AND MINIMUM PRESSURES THIS SYSTEM HAS 243 PIPES WITH 186 JUNCTIONS , 52 LOOPS AND 6 FGNS THE RESULTS ARE OBTAINED AFTER 7 TRIALS WITH AN ACCURACY = .00137 This simulation models the zone 2 and zone 3 Water distribution 753.21 system subject to the average day demand in Fiscal Year 1987/88. -113.92 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -183.10 -.61 .00 .00 -1.17 -.85 47 239 240 -187.29 -.02 .00 .00 -.53 -.12 LINE 84 IS CLOSED 206 217 326 336.91 8.12 201.39 .00 2.15 2.62 LINE 221 IS CLOSED JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE - 239 4.19 258.63 109.00 64.84 �- 240 .00 258.65 109.00 64.85 MAXIMUM PRESSURES 323 2.96 402.56 115.00 124.61 324 .74 405.24 150.00 110.60 73 .00 261.20 19.00 104.95 32S .00 407.38 167.00 104.17 322 10.04 398.41 160.00 103.31 MINIMUM PRESSURES 23 .00 258.89 238.00 9.05 303 .00 393.97 370.00 10.39 302 .00 394.01 370.00 10.40 301 .00 394.03 370.00 10.41 243 .00 258.80 226.00 14.21 THE NET SYSTEM DEMAND = 1233.99 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 -92.03 104 753.21 132 85.23 204 725.50 211 -113.92 Page 1 !A 213 -123.99 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 1563.95 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -329.94 A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00 THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE JUNCTION NUMBER DEMAND 239 1500.00 THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00033 104 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -100.14 -.20 .00 .00 -.64 -.28 47 239 240 -1600.14 -1.11 .00 .00 -4.54 -6.51 LINE 84 IS CLOSED 206 217 326 333.26 7.96 203.60 .00 2.13 2.57 LINE 221 IS CLOSED JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE - 239 1500.00 250.73 109.00 61.42 <7- 240 .00 251.84 109.00 61.90 MAXIMUM PRESSURES 323 5.92 399.78 115.00 123.40 324 1.48 401.76 150.00 109.09 73 .00 261.00 19.00 104.87 322 20.08 396.78 160.00 102.61 32S .00 403.35 167.00 102.42 MINIMUM PRESSURES 23 .00 258.87 238.00 9.05 303 .00 393.87 370.00 10.34 302 .00 394.00 370.00 10.40 301 .00 394.02 370.00 10.41 243 .00 258.74 226.00 14.19 THE NET SYSTEM DEMAND = 3959.60 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 1474.31 104 979.13 132 734.45 204 906.97 211 -82.31 213 -52.95 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4094.86 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -135.26 Page 2 9 0 I rte: FLOWRATE IS EXPRESSED IN GPM AND PRESSURE IN PSIG OUTPUT SELECTION: THE FOLLOWING RESULTS ARE OUTPUT RESULTS ARE OUTPUT FOR ALL PIPES WITH PUMPS - CLOSED PIPES ARE NOTED RESULTS ARE OUTPUT FOR THE FOLLOWING PIPES : 46 244 RESULTS ARE OUTPUT FOR THE FOLLOWING JUNCTION NODES : 239 800 5 VALUES ARE OUTPUT FOR MAXIMUM AND MINIMUM PRESSURES THIS SYSTEM HAS 244 PIPES WITH 187 JUNCTIONS , 52 LOOPS AND 6 FGNS THE RESULTS ARE OBTAINED AFTER 7 TRIALS WITH AN ACCURACY = .00136 This simulation models the zone 2 and zone 3 water distribution system subject to the average day demand in Fiscal Year 1987/88. PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -183.10 -.61 .00 .00 -1.17 -.85 LINE 84 IS CLOSED 206 217 326 336.91 8.12 201.39 .00 2.15 2.62 LINE 221 IS CLOSED 244 239 800 .00 .00 .00 .00 .00 .00 JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE 239 4.19 258.63 109.00 64.84 800 .00 258.63 140.00 51.41 MAXIMUM PRESSURES 323 2.96 402.56 115.00 124.61 324 .74 405.24 150.00 110.60 73 .00 261.20 19.00 104.95 325 .00 407.38 167.00 104.17 322 10.04 398.41 160.00 103.31 MINIMUM PRESSURES 23 .00 258.89 238.00 9.05 303 .00 393.97 370.00 10.39 302 .00 394.01 370.00 10.40 301 .00 394.03 370.00 10.41 243 .00 258.80 226.00 14.21 THE NET SYSTEM DEMAND = 1233.99 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 -92.03 104 753.21 132 85.22 204 725.51 211 -114.11 Page 1 i76 HASH 213 -123.80 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 1563.94 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -329.94 A SUMMARY OF CONDITIONS SPECIFIED FOR THE NEXT SIMULATION FOLLOWS THE DEMANDS ARE CHANGED FROM ORIGINAL VALUES BY A FACTOR = 2.00 THE FOLLOWING SPECIFIC DEMAND CHANGES ARE MADE : JUNCTION NUMBER DEMAND 800 1500.00 THE RESULTS ARE OBTAINED AFTER 4 TRIALS WITH AN ACCURACY = .00042 PIPE NO. NODE NOS. FLOWRATE HEAD LOSS PUMP HEAD MINOR LOSS VELOCITY HL/1000 46 236 239 -97.90 -.19 .00 .00 -.62 -.27 LINE 84 IS 206 217 CLOSED 326 333.22 7.96 203.62 .00 2.13 2.57 LINE 221 IS 244 239 CLOSED 800 1500.00 5.95 .00 .00 4.25 5.78 JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE 239 8.38 250.67 109.00 61.39 800 1500.00 244.72 140.00 45.38 MAXIMUM PRESSURES 323 5.92 399.77 115.00 123.40 324 1.48 401.75 150.00 109.09 73 .00 261.00 19.00 104.87 322 20.08 396.78 160.00 102.61 325 .00 403.35 167.00 102.42 MINIMUM PRESSURES 23 .00 258.87 238.00 9.05 303 .00 393.87 370.00 10.34 302 .00 394.00 370.00 10.40 301 .00 394.02 370.00 10.41 243 .00 258.74 226.00 14.19 THE NET SYSTEM DEMAND = 3967.98 SUMMARY OF INFLOWS(+) AND OUTFLOWS(-) FROM FIXED GRADE NODES PIPE NUMBER FLOWRATE 51 1480.55 104 980.09 132 735.41 204 907.15 211 -82.11 213 -53.11 THE NET FLOW INTO THE SYSTEM FROM FIXED GRADE NODES = 4103.20 THE NET FLOW OUT OF THE SYSTEM INTO FIXED GRADE NODES = -135.22 Page 2 *9_;h i 54' 550 490:e 451 I i ., ]q1 14 454 44 ' 44 / P iNLE( 43 zomma W. VIEW RESERVOIR 440 OVERFLOW s .,,' cwrawn . zza.zo• eo ER RNK 333 � r OVERFLOW = z59.1'ss.r 431 / n,00sv o 229 — /msmA/ �! !I IIIGIMIifr n,a�sv 1�1 NkO �v % 1 rr ,,2 M TVN ryN�i c tt 11 1024V O // 5` o 11102 A 9 'd j O Lil na R 21 F 16` 54 550 \ � � t ago a. 4514?;, 454 445 ..r44 f 437 440 % 333 431 �r 229 /~221 r r_ �I 225 01 IIIP10�6 / hh � III =v iM0a3V //! N , �Q it ta2N ' Rry ,O M ,y ^> MOM NaY r" � nlar+v Qs p o 1�1l Y y 70$ O6 709 1,20' 770 773 77,9 774 771 7?? 726 7?7 730 72s 734 72 „I0i v' O nz ovw 8 1112023v 7 O O� n 4v3 o°' 7•j) ti o s st2 747 n ozeu amu^ 74s Iz, .9 ISS 'sem x-114190 Soo p;fr, It 39 : �C,Iy'•',J sr MANUFACTURER SPECIFICATIONS f5 Dimensions tin Inches) Valve Size 3" 4" 6" 8" 10" A 26.06 30.06 40.06 50.81 59.56 B _ 42.19 48.19 61-19 73.94 85.69 C Fdax 1.8.87 22.75 _30.13 37.75 45.75 D _ 3.75 4.50 _ 5.50 6.75 8.00 E 4.50 5.00 6.00 8.00 10.00 F 11.00 11.63 13-00 14.50 18.50 G 7.25 8.31 11.00 13.00 15.75 It Is recommended that this unit be installed in a horizontal position and tha; provisions for adequate drainage be made. Right "nand mount of bypass assembly is standard. Left hand mount is optional Adequate space around assembly for maintenance work and testing is recom- mended. Model 16.4 Double Check Detector Check Back -Slow Preventer 3" MODEL 16-4 t I I i i ii c. l r.- 1 i I a° Wo 240 320 400 ROW -GPM RF 6" MODEL 164 n let �I I k w 4i i4a 480 730 Via/� Ilea FLOW -GPM L._\ 8" MODEL 16-4 i4 ! I I I ! I f I s 31 I I 1 I I ! f 400 900 1200 -1e0o lead FLOW-GPM1t ttlac� flF 4" MODEL 16.4 10" MODEL 16.4 ! ^+i I -fir ll 0 61 I I I( I If_ 91 6 = 1 1 I 1 106 200 300 W° 500 600 1600 2400 3300 FLOW -GPM RF FLOW.GPM lad RF -Raced Flew'vsties adopted Gy I.1a American Ware+works Assoda9cn and the New England water Works Assoc:aticn. Qe CLA VAL CO. Represented By: AM PO Box 1325 Newport Beach GA 92659-0325 Phone: 714-722-4800 •Fax: 714-548-5441 CLA^VAL CANADA, LTD. CLA^VAL$A 12667 Christie Drive chanen des Masanges I aaemswre. ontarm CH -1332 AomaneV MA-VALPhone: Canada LOO tet Lausanne. Switzerland 005-563.4953 Phone: 41-21-643-15-55 Fu' 906.567-4Ca0 Fax: 4t-21-643.15.50 E-Motlef 164 (F!-5197) ^oarwc=rr duvu rwc r.,r=+mus+ sv.c'raw=:vwumm=,;=.,".w�Mno IVWw.cle^val.com 26 UD -x A417o; d 1 �}��YL0. • ➢�1tEVPnw uily •'� lii � oa nai,ly •aiarn a'` YrttzWafn�_vil� .[gyp � ba : l}� Giiia'fi%1�m mu ItRG wAvfiO e, »e �. [1G rytl� ' i Rj✓ 1 I�rf�,�.P.�e�K44ILIu�,�1 vf�pgK {iwi•S � a• way � • � r m ��RV^ , sss'��• I � ii j�}�^i�,' °�n ¢ .ww°'7 "i.`a'`i-y � �.. ...,.`r...�_..r .m, amC" " °o `��a i,70 yJ I•, _ _ O � a v _4Y YL+ i l3 8 E �/���[�^^'%'� V7� Ev •A -p• LEiS � C RLRN'YIIV �:�iigf $"Y� �-p 0 DIMENSIONS SHOWN ARE TYPICAL NUT FOR CONSTRUCTION \ M 114SC DC' L / ANC 0 BQ!f LUCATMM 4 I[7µjl � um ELEVAllON VIEW � - $: ✓ ( IRm Ham x .a - .y 6 a y •1 14 3! is v / tL 31 b ! � p � + ! 1 a �• �V LCL a r ..A. aiYP. r �3l D o Y }) S'COAW. 1 PLMI VIEW 24 71 Sir w I FLOW SPOOL 7e' r: pyo= O VIEW Ad) COMPONENTS IIEN DEse)wr1DN ccpuw (3) necULP 2. CCPUNP{9lhf0'b. CNfCK VP(VE]' . PHE59UhE HE[if1AT)NG VALVE )' 5. Pf)ES9UHE AE6UtASN18VALVE VALVE EG9. . "..IIGTIM11tlpAGGN BVTT6bRV VPLVEY 1. SUCTIDN 19dATIDN HNfTEp0.V VALVE P'(Y)ItE4D 8 HSCIVJKa£CCid..A)XMHVIIEPJiT YA:VEY 9. tlISLNARpE19CITTIONHUE2ftKY VALYEC R/tiE09. 0 1HNLTbN11EADENM{15M FIANGE) )1. bIDDNAHGE NEwE'h B'{1GOPFUNGE) 12 SYa EN HKU 13 SYSTEN POWER AND CGN)ftq. PANEL ' )l. pmwuR EWIFCM CCNNECTKW V.EM PULP) e9. PP VHE SYNCH CDNNEMM(LCW 9VGT 56. PPFH9UHE 64NTG)CDNNECT1GN iLOW SUCTIDN} 1T. IYPRESSURE WAwT F.(FEELIFNE MRN EG )9wNXlI PUFMN 21. PE9UNCOtWNNFXTM(VUP) iYP.S z]. MECHANICAL]ENP. kEL1EF VALVE CDIYIECTpN P)NC-Dv R3. FLGY 96NSOR IL MYNfl9CUNIMTCiR TANK TP WBOY NInL®IVv016Y4TN aLx.n n laTTeaNeo fv vosmnma -avco Avancorromus j m®FwnlPmlmmm�mxYYY� PkDP Sy"O.FY•ONM1Y!)NG SYnC(OF19 f0 •.a �o-�m.a.^u u.�e..wiuo<�r 1 jyf I°P1H'fllY)b � �P.'vxN �wiF. Sy1KviNiFIN �N.T.S.� �J." q WATE SYSTEM DISTRIBUTION CALCULATIONS R.C.E. 49302 P.L.S. 6368 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS -- LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 NMAIII A MOVI&I 9 A kh 111• • PINNACLE RIDGE SUBDIVISION 2762 'T Street Extension Petaluma, California APN 019-401-019 Job No.: 03836 December 14, 2005 Prepared by: EK Checked by: Kv of) N00 COM`AIUNITY OUELOPi'SIT DEPQjMENT PROJECT OVERVIEW This report evaluates if the pump house suction pressure meets the design pressure required by the City in their comments dated August 31, 2005. SJLA has evaluated the suction pressure available before the double detector check valve and found it to be 33.98 psi. SJLA has evaluated the suction pressure available before the fire suppression system and found it to be 22.50 psi. The attached calculations provide engineering calculations to support this finding. DESIGN METHODOLOGY Original Static and residual pressures were obtained from the City of Petaluma assuming the water level in the City Water Tank as 258.9 feet. On August 31, comments from the City requested a water level reduction in the city water tank from 258.9 to 253 feet. The residual pressure at the pump house and double detector check valve was determined by reducing the residual pressure provided by the City at Junction 800 by the pipe friction loss, local loss at the double detector check valve, minor losses and changes in elevations. The Bernoulli equation was used to determine the pipe friction loss. The velocity component of the Bernoulli equation was taken into account. See attached pages for hand calculations. FOR 2762 "I" STREET EXTENSION Petaluma, California December -05 R.C.E. 49302 P.L.S. 6368 STEVEN J. LAFRANCHI & ASSOCIATES, INC. CIVIL ENGINEERS - LAND SURVEYORS PETALUMA MARINA BUSINESS CENTER 775 BAYWOOD DRIVE, SUITE 312, PETALUMA, CA 94954 TEL 707-762-3122 FAX 707-762-3239 HEBREW HEIGHTS FIRE FLOW CALCULATIONS PINNICALE PREMO WATER MAIN -WATER SYSTEM TEST 12-12-05 Hazen -Williams Minor Losses feet psi 8519 0 hL 1.318 x C„ x R0.65 0.00 He KEYNOTE A - I by - KEYNOTE B HF gpm 15 cfs HFIRE IIYOI 0.0 Quan. .6 Q= 0' 3.34 KGS 0.08 0 C„= 130 C-900 PVC Kti 0.23 1 D= 12 inches KE- 1.75 1 R= 0.250 Kc= 0.66 0 L= 295 feet V= 4.26 ft/s �h4.26 1 1 9519x \` 1.318 x x 130 0.4175 L 6519 (hL 3.23 x 0.0077 x 2.395 x 295 Line Losses feet psi hL 1.59 0.69 Minor Losses Summation of Losses feet feet psi Hococ 0 0.00 HG 0.00 0.00 He 0.06 0.03 HF 0.49 0.21 HFIRE IIYOI 0.0 0.00 H06CMRGEt SnIEL1 0.0 0.00 Summation of Losses feet psi H,= 2.14 0.93 Hz 10.00 4.33 Starting= 42.83 psi Residual= 37.57 psi 12/14/2005 Keynote A (Refer to "Starting Residual Pressure Calculation") Keynote B HEBREW HEIGHTS FIRE FLOW CALCULATIONS PINNICALE PREMO WATER MAIN -WATER SYSTEM TEST 12-12-05 Hazen -Williams Minor Losses V I I es19 0.00 HGV— 1.318 x CB x R°'s' 0.33 0.14 HF 2.49 1.08 HEM,,;.B„ 0.0 0.00 HGEcH GEA SENJBLI KEYNOTE C - KEYNOTE, ' cfs Quan. Q= 150 " 3.34 KGo= 0.08 1 CH— 130 C-900 PVC K,= 0.23 1 D= 8 inches K,E— 1.75 1 R= 0.167 K,= 0.66 0 L= 35 feet V= 9.57 ft/s 9.57 1 1 8519x x x L ` 1.318 130 0.3234 1 8519 (h 7.26 x 0.0077 x 3.092 x 35 Line Losses feet psi h 1.36 0.59 Minor Losses Summation of Losses feet feet psi HDCDc= 0 0.00 HGV— 0.11 0.05 He 0.33 0.14 HF 2.49 1.08 HEM,,;.B„ 0.0 0.00 HGEcH GEA SENJBLI 0.0 0.00 Summation of Losses feet psi H 4.29 1.86 Hi= 4.00 1.73 Starting 37.57 psi Keynote B Residual= 33.98 psi Keynote C 12/14/2005 Hazen -Williams HEBREW HEIGH'T'S FIRE FLOW CALCULATIONS PINNICALE PREMO WATER MAIN -WATER SYSTEM TEST 12-12-05 )A519 h` 1.318 x C„ x R°.6' KEYNOTE C - KEYNOTE D c.5 ° m cfs 12.69 HGV Quan. Q= 500 ' 3.34 K� 0.08 1 CH 30 C-900 PVC K,= 0.23 3 D= 12 inches KBE 1.75 0 R= 0.250 K,= 0.66 0 L= 296- feet V= 4.26 ft/s 4.26x 1 1 E519 ` 1.318 130 x 0.4175 x L i esi9 (h 3.23 x 0.0077 x 2.395 x 295 Line Losses feet psi h 1.59 0.69 Minor Losses feet H = 14.49 Hz- 12.00 Starting-- Residual= tartingResidual= psi 5.50 0.01 0.08 0.00 0.00 0.00 (From Manufacturer, See Chart) psi 6.28 5.20 33.98 psi 22.50 psi Keynote C Keynote D 12/14/2005 feet HD,oc 12.69 HGV 0.02 He 0.19 HF 0.00 HFIrtEHYDR 0.0 HDECH GEA SEAIELI 0.0 Summation of Losses feet H = 14.49 Hz- 12.00 Starting-- Residual= tartingResidual= psi 5.50 0.01 0.08 0.00 0.00 0.00 (From Manufacturer, See Chart) psi 6.28 5.20 33.98 psi 22.50 psi Keynote C Keynote D 12/14/2005 FIRE FLOW LINE DATA ATOB BEND 90' = 1 BEND 45' = 0 TEE = 1 VALVE = i Z= 10' (150'-140') L = 295' 12"W FIRE FLOW LINE DATA BTOC BEND 90' = 1 BEND 45' = 0 TEE = 1 VALVE = 1 Z= 4' (154'-150') L = 35' 8"W FIRE FLOW LINE DATA CTOD BEND 90' = 1 BEND 45' = 2 TEE =0 VALVE = 1 Z= 41' (167'-154') L = 185' 8"W Project Name: File Number: Address/Location: MITIGATION MONITORING awOg City ofPetalum Community Development Department Planning Division 1B6a 11 English Street, Petaluma, CA 94952 Pinnacle Ridge Subdivision 05-ZOA-0029-CR 2762 1 Street Reporting/Monitoring Record - Mitigation Measures PLAN This document has been developed pursuant to the California Environmental Quality Act, Public Resource Code Section 21.081.6 to ensure proper and adequate monitoring or reporting in conjunction with project(s) approval which relies upon a Mitigated Negative Declaration or an Environmental Impact Report. Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division Geologv and Soils. Mitigation Measures 1. As deemed appropriate, the recommendations as outlined in the Geotechnical investigation prepared by Bauer Associates dated January 2005 shall be incorporated. 2. All earthwork, grading, trenching, bacicfilling, and compaction operations shall be conducted in accordance with the City of Petaluma's Subdivision Ordinance (#1046, Title 20, Chapter 20.04 of the Petaluma Municipal Code) and Grading and Erosion Control Ordinance #1576, Title 17, Chapter 17.31 of the Petaluma Municipal Code). 3. The project sponsor shall submit an Erosion and Sediment Control Plan prepared by a registered professional engineer as an integral part of the grading plan. The Erosion and Sediment Control Plan shall be subject to review and approval of Public Works, prior to issuance of a grading permit. The Plan shall include temporary erosion control measures to be used during construction of cut and fill slopes, excavation for foundations, and other grading operations at the site to prevent discharge of sediment and contaminants into the drainage system. The Erosion and Sediment Control Plan shall include the following measures as applicable: a. Throughout the construction process, disturbance of groundcover shall be minimized and the existing vegetation shall be retained to the extent possible to reduce soil erosion. All construction and grading activities, including short- teem needs (equipment staging areas, storage areas, and field office locations) shall minimize the amount of land area disturbed. Wienever possible, existing disturbed areas shall be used for such purposes. Requested By or Due Date FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitorin Page 1 Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division City of Petahtma, California b. All drainage -ways, wetland areas and creek channels shall be protected from silt and sediment in storm runoff through the use of silt fences, diversion berms, and check dams. All exposed surface areas shall be mulched and reseeded and all cut and fill slopes shall be protected with hay mulch and/or erosion control blankets as appropriate. C. Material and equipment for implementation of erosion control measures shall be on-site by October 1st. All grading activity shall be completed by October 15th, prior to the on -set of the rainy season, with all disturbed areas stabilized and re -vegetated by October 31st. Upon approval by the Petaluma City Engineer, extensions for short-term grading may be allowed. The Engineering Section in conjunction with any specially permitted rainy season grading may require special erosion control measures. 4. All construction activities shall meet the Uniform Building Code regulations for seismic safety (i.e., reinforcing perimeter and/or load bearing walls, bracing parapets, etc.). 5. All public and private improvements shall be subject to inspection by City staff for compliance with the approved Improvement Plans, prior to City acceptance. 6. Foundation and structural design for buildings shall conform to the requirements of the Uniform Building Code, as well as state and local laws/ordinances. Construction plans shall be subject to review and approval by the Building Division prior to the issuance of a building permit. All work shall be subject to inspection by the Building Division and must conform to all applicable code requirements and approved improvement plans prior to issuance of a Certificate of Occupancy. Prior to issuance of a grading or building permit, the project sponsor shall submit a detailed schedule for field inspection of work in progress to ensure that all applicable codes, conditions and mitigation measures are being properly implemented through construction of the project. 8. The Site Plan and Architectural Review Committee (SPARC) shall review and approve the landscaping plans, which show how disturbed areas are to be replanted. Any changes to the landscaping plan as required by SPARC shall be incorporated into plans that are submitted for building permit issuance. Requested By or Due Date FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Page 2 Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval ''aE17rU aco• W I iixlr rarer. .oauur'.. reNism:1) s'rur. 6,rre ; mrpnLs City of Petahuna, California 9. Prior to issuance of a grading permit, building permit or approval of an improvement plan or Final Map, the project sponsor shall provide a Soils Investigation and Geotechnical Report prepared by a registered professional civil engineer for review and approval of the City Engineer and Chief Building Official in accordance with the Subdivision Ordinance and Grading and Erosion Control Ordinance. The soils report shall address site specific soil conditions (i.e. highly expansive soils) and include recommendations for site preparation and grading; foundation and soil engineering design; pavement design, utilities, roads, bridges and structures. 10. The design of all earthwork, cuts and fills, drainage, pavements, utilities, foundations and structural components shall conform with the specifications and criteria contained in the geotechnical report, as approved by the City Engineer. The geotechnical engineer shall sign the improvement plans and certify the design as conforming to the specifications. The geotechnical engineer shall also inspect the construction work and shall certify to the City, prior to acceptance of the improvements or issuance of a certificate of occupancy that the improvements have been constructed in accordance with the geotechnical specifications. Construction and improvement plans shall be reviewed for conformance with the geotechnical specifications by the Engineering Section of the Community Development Department and the Chief Building Official prior to issuance of grading or building permits and/or advertising for bids on public improvement projects. Additional soils information may be required by the Chief Building Inspector during the plan check of building plans in accordance with Title 17 and 20 of the Petaluma Municipal Code. Hvdroloav and Water Qualitv Mitigation Measures 1. All construction activities shall be performed in a manner that minimises the sediment and/or pollutants entering directly or indirectly into the storm drain system or ground water. The applicant shall incorporate the following provisions into the construction plans and specifications, to be verified by the Community Development Department, prior to issuance of grading or building permits. a. The applicant shall designate construction staging area and areas for storage of any hazardous materials (i.e. motor oil, fuels, paints, etc.) used during construction on the improvement plans. All construction staging areas shall be located away from any stream and adjacent drainage areas to prevent runoff from construction areas from entering into the drainage system. Areas designated for storage of hazardous materials shall include proper containment features to prevent contaminants from entering drainage areas in the vent of a spill or leak Department Reauested By or Due Date Page 3 PD Planning Division FM Final Map FM Fire Marshal BP Building Permit ENG Engineering CO Certificate of Occupancy BD Building Division SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval 7err. tiiiime n�isuiv 'surr '. n�ie iaim�s, City of Petaluma, California b. No debris, soil, silt, sand, cement, concrete or washings thereof, or other construction related materials or wastes, oil or petroleum products or other organic or earthen material shall be allowed to enter any drainage system. All discarded material including washings and any accidental spills shall be removed and disposed of at an approved disposal site. The applicant shall designate appropriate disposal methods and/or facilities on the construction plans or in the specifications. c. No heavy equipment shall be operated in any live creek channel. All in - stream channel work shall be limited to the dry season (typically defined as May I" through October 15"' and performed in accordance with conditions specified by the Department of Fish and Game in a Streambed Alteration Agreement. The Department of Fish and Game may require a more limited construction period in stream channels that support anadromous fisheries. Applicant shall provide copy of the approved Streambed Alteration Agreement and proof of compliance with the permit conditions prior to approval of improvement plans or issuance of grading permits for work within any channel. 2. The applicant shall submit the required Notice of Intent for compliance with the conditions for a general permit under the National Pollutant Discharge Eliminate System (NPDES) storm water permit for construction activities administered by the State of California Regional Water Quality Control Board. The conditions require development and implementation of a Storm Water Pollution Prevention Plan (SWPPP), which may also meet the City's requirement for an Erosion and Sediment Control Plan, noted above. 3. Prior to issuance of a grading or building permit or approval of any improvement plans for earthwork within any creek corridor or identified wetland site, proof of authorization from all applicable responsible agencies including, but not limited to, the U.S. Army Corps of Engineers, the California Regional Water Quality Control Board, and the California Department of Fish and Game, shall be submitted by the applicant to the Community Development Department. Department Requested By or Due Date Page 4 PD Planning Division FM Final Map FM Fire Marshal BP Building Permit ENG Engineering CO Certificate of Occupancy BD Building Division SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval City of Petaluma, Califonda — 4. The applicant shall submit a detailed grading and drainage plan for review and approval by the Community Development Department prior to approval of a final map, improvement plan, grading or building permit. The project grading and all site drainage improvements shall be designed and constructed in conformance with the City of Petaluma Community Development Department's "Standard Specifications" and the Sonoma County Water Agency's "Flood Control Design Criteria". Channel modifications and bank stabilization improvements within a natural stream channel shall be designed in conformance with the City's "Restoration Design and Management Guidelines". The drainage plans shall include supporting calculations of storm drain and culvert size using acceptable engineering methods. No lot -to -lot drainage shall be permitted. Surface runoff shall be addressed within each individual lot, and then conveyed to an appropriate storm drain system. All hydrologic, hydraulic and storm drain system design shall be subject to review and approval of the Sonoma County Water Agency (SCWA) and the City Engineer. Bioloaical Resources Mitigation Measures 1. No trees or limbs of the oak trees described in this report shall be removed without first having a qualified bat biologist conduct emergence surveys to determine presence or absence of day roosting bats. No machinery shall be parked or used beneath the trees, to prevent fumes and noise from impacting bats that may be roosting inside tree cavities. 2. Conduct construction activities during summer months when the roadside drainage ditch is dry to prevent impacts to water quality. 3. Construction activities may result in erosion and sedimentation of downstream aquatic habitats. Sediment transport from construction activities to the roadside drainage ditch and downstream aquatic habitats can have deleterious effects on aquatic organisms in these aquatic habitats and result in violations of State and Federal water quality regulations. 4. Ensure that best management practices are adopted in order to minimize the amount of sediment leaving the site during construction activities. 5. Prior to issuance of a development permits, obtain a general permit for Storm Water Discharges from Construction Activities through the SFBRWQCB. 6. Prior to issuance of development permits, prepare and implement a Storm Water Pollution Prevention Plan for construction activities. Department Requested By or Due Date Page 5 PD Planning Division FM Final Map FM Fire Marshal BP Building Permit ENG Engineering CO Certificate of Occupancy BD Building Division SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division Reauested By or Due Date City of Petaluma, California FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Page 6 Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval City of Petahnna, California Construction and landscaping activities may result in impacts to valley oak tree. Construction and landscaping activities at Lot 8 should avoid impacts to the valley oak tree. Prior to issuance of development permits, protective fencing shall be installed. Fencing should encompass the entire canopy of the tree to prevent impacts to its roots and drip line. 8. Landscaping and irrigation should be designed to not impact the roots and drip line of the valley oak tree. Visual Qualitv and Aesthetics Mitigation Measures All exterior lighting shall be directed onto the project site and access ways and shielded to prevent glare and intrusion onto adjacent residential properties and natural/undeveloped areas. Plans submitted for SPARC review and approval shall incorporate lighting plans, which reflect the location and design of all proposed streetlights, and any other exterior lighting proposed. — 2. Development plans shall be designed to avoid vehicular lighting impacts to bedroom areas and other light-sensitive living areas of any nearby residential lot, home or facility. Development plans for lots proposed at street intersections or in other potentially light-sensitive locations shall incorporate architectural or landscape design features to screen interior living space from headlight glare. Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division 3. No illumination shall be installed within the designated open space area except for low-level lighting along designated pathways adjacent to public streets. The improvement and landscape plans prepared for the project shall reflect the location and design details of all light fixtures proposed. Said locations and details shall be reviewed and approved by the Site Plan and Architectural Review Committee prior to Final Map approval. 4. Shade trees shall be incorporated into building and improvement plans along public streets and within parking areas in conformance with the City's Site Plan and Architectural Review Guidelines to reduce glare and to provide shade. Reauested By or Due Date FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Page 7 Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR Reporting/Monitoring Record - Mitigation Measures for Approval City of Petaizana, California 5. All new and existing overhead utilities (except for high voltage transmission lines) shall be placed underground. 6. Architectural details, landscape plans and specifications, and detailed site plans shall be subject to review and approval by the Site Plan and Architectural Review Committee prior to issuance of building permits. Mandatory Findines of Sienificance. IMPLEMENTATION: 1. The applicant shall be required to obtain all required permits from responsible agencies and provide proof of compliance to the City prior to issuance of grading permits or approvals of improvements plans. — 2. The applicant shall incorporate all applicable code provisions and required mitigation measures and conditions into the design and improvements plans and specifications for the project. — 3. The applicant shall notify all employees, contractors, and agents involved in the project implementation of mitigation measures and conditions applicable to the project and shall ensure compliance with such measures and conditions. Applicant shall notify all assigns and transfers of the same. 4. The applicant shall provide for the cost of monitoring of any condition or mitigation measure that involves on-going operations on the site or long-range improvements, such as archaeological resources, etc. MONITORING: The Building Division, Planning Division, Engineering Section and Fire Departments shall review the improvement and construction plans for conformance with the approved project description and all applicable codes, conditions, mitigation measures, and permit requirements prior to approval of a site design review, improvement plans, grading plans, or building permits. — 2. The Planning Division shall ensure that the applicant has obtained applicable required permits from all responsible agencies and that the plans and specifications conform to the permit requirements prior to the issuance of grading or building permits. Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division Requested By or Due Date FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Page 8 Pinnacle Ridge Subdivision File No. 05-ZOA-0029-CR City of Petalwna, California Reporting/Monitoring Record - Mitigation Measures for Approval aeneit eep.nv ' a,rre t aerr. , .-uEr;t. 'alt OIIF. 'rrvisueu`. sn%rr. 2\TE IYl Tilk4" `. 3. Prior to acceptance of improvements or issuance of a Certificate of Occupancy, all improvements shall be subject to inspection by City staff for compliance with the project description, permit conditions, and approved development or improvement plans. CONSTRUCTION MEASURES: — 1. The applicant shall designate a project manager with authority to implement all mitigation measures and conditions of approval and provide name, address, and phone numbers to the City prior to issuance of any grading permits and signed by the contractor responsible for construction. — 2. Mitigation measures required during construction shall be listed as conditions on the building or grading permits and signed by the contractor responsible for construction. — 3. City inspectors shall insure that construction activities occur with the approved plans and conditions of approval. — 4. If deemed appropriate by the City, the applicant shall arrange a pre -construction conference with the construction contractor, City staff and responsible agencies to review the mitigation measures and conditions of approval prior to the issuance of grading and building permits. S:\Plnnning\CEQA Docs (A)Qvlitigation MonitoringTinnacle Ridge.doc Department PD Planning Division FM Fire Marshal ENG Engineering BD Building Division Reauested By or Due Date FM Final Map BP Building Permit CO Certificate of Occupancy SPARC Site Plan and Architectural Review Committee LTM Long -Term Monitoring Page 9 EN ii CW on 11ji'l-141: Attachments to Planning Commission Report dated October 28, 2008 Attachment 1: Draft Findings/Conditions Draft Findings for a Mitigated Negative Declaration Draft Findings for a Tentative Subdivision Map Draft Findings for a PUD Amendment to Westridge Units 4 & 5 Attachment 2: Narrative from applicant dated 10/07/08 Attaclunent 3: Resolution 89-10, which approved the Unit Development Plan for Westridge Units 4 & 5 Attaclnnent 4: Correspondence Letter from Rachel Kaplan dated September 17, 2008 Two e-mails from Shelly Campbell dated September 30, 2008 Attachment 5: Hillside Ordinance Attachment 6: Tree Report from Horticultural Associates, dated October 1, 2008 Supplemental Materials from applicant: Visual Analysis Pinnacle Ridge Additional Submittals 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 CITY OF PETALUMA, CALIFORNIA MEMORANDUM Comatttaity Development Departatent, Planning Divisioty 11 English Street, Petaltana, Cil 94952 (707) 778-4301 Fttc (707) 778-4498 E-mail: p1awdng@d.petahtm(Lca.us DATE: October 28, 2008 AGENDA ITEM NO. I TO: Planning Commission FROM: Irene T. Borba, Associate Planner SUBJECT: AN APPLICATION FOR TENTATIVE SUBDIVISION MAP TO SUBDIVIDE A 16.36 ACRE PARCEL AT 2762 "P' STREET INTO AN 11 -UNIT SUBDIVISION AND TO AMEND THE PUD -PLANNED UNIT DISTRICT OF WESTRIDGE UNITS 4 & 5 AND ASSOCIATED DEVELOPMENT PLAN AND PUD STANDARDS. CONTINUED FROM SEPTEMBER 9, 2008 7,Urq@T1 19 711T4 TLrvT1VJ Staff recommends that the Planning Commission consider the supplemental information provided in the packet. Although the proposed project appears to be generally consistent with the 2025 General Plan Land Use designation and densities, staff previously sought specific input from the Commission regarding applicable hillside and ridgeline policies; which the Commission provided. The Commission however requested specific visual analysis to help in their discussion/determination about the proposed densities and hillsides/ridgeline discussion. The supplemental information should provide the Commission with the information to determine if the project meets the intent of the General Plan and Hillside Ordinance. Should the Commission be in a position to forward a favorable recommendation Staff has included draft findings and conditions (see Attachment 1) for the following: 1. To Adopt a Mitigated Negative Declaration 2. To Approve the PUD Amendment to Westridge Units 4 & 5 and 3. To Approve the Tentative Subdivision Map for 11 Residential Units I 2 3 4 5 6 7 8 9 to 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 BACKGROUND The proposed project was heard at the September 9, 2008 Planning Commission meeting. Staff and the applicant presented the proposed project. The Commission took public testimony; the public hearing was closed. Some of the issues raised by members of the public included the following: • Conformance with Resolution 89-10, which approved the Unit Development Plan for Westridge Units 4 & 5 (see Attachment 2). • Density • Drainage/runoff • Clustering/feathering • Appropriateness of proposal with site and surroundings. • Loss of views. • Water pressure • Hillside slippage • Hillside/ridgelines The Commission asked the following be addressed: 1. The Planning Commission requested that the applicant provide a larger area map which showed the land uses and densities of the surrounding properties both within the current City boundaries and properties designated to come into the City sometime in the future. •3 The applicant has provided an area land use and density map. 2. The Commission requested site sections of the proposed project. ❖ The applicant has provided three cross-sections from various perspectives which depict the relationships between existing ground, finished grade, the street, and the proposed houses. 3. Provide additional visual analysis. Staff and Council member Rabbitt are to work with the applicant to determine the appropriate vantage points. Staff has attached the Hillside Ordinance as a reference for the Commissioners (Attachment 7). •S The applicant has provided new photo simulations from the view platforms determined to be appropriate by Council member Rabbitt and staff. The project is not visible from any of the view platforms listed in the City's Hillside Protection Ordinance with the exception of the I Street gateway which was previously shown to the Commission. The applicant met with City Councilman David Rabbitt and staff to evaluate the potential neighborhood sites to use as view platforms. After evaluation of the potential neighborhood vantage points, a total of seven (7) new visual simulations of the completed project were developed. These vantage points include the following: (1) from the highest point on the site looking back over the project towards the City; (2) from I Street at the intersection of Lot #9 and the Urban Separator which is further south on I Street than 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 the original visual (as requested by the PC); (3) from Wallenberg Way (approximately at 14 Wallenberg Way) off Sunnyslope Rd.; (4) from I Street just north of Grevillia Dr.; (5) from about 188 Grevillia Dr. just east of Black Oak; (6) from about 342 Purrington Rd.; and (7) from the open space behind the King residence off Black Oak. 4. Commission requested enhanced visual analysis of the proposed project. ❖ The applicant has included the following visual analysis: (1) inserting the trees proposed to be planted in the Private Open Space Easement at the rear of Lots 1, 2 and 3 in the visuals from Grevillia Drive; (2) inserting trees along the Public Open Space at the rear of Lots 4, 5 and 6. 5. The Commission requested that the applicant consider a private conservation easement on Lots 8 and 9 to prevent any building in this area by future homeowners. ❖ The applicant has agreed to include the conservation easement on Lots 8 and 9 which will help to enhance the rural character along I street. The map has been revised to note the conservation easement. 6. The Commission requested that parking be provided at the pump house for the public to be able to park and access the Urban Separator. It was also requested that a bench and water fountain be installed as well. The applicant has provided a plan illustrating the additional parking as requested by the Commission and staff will condition the project to provide the details, bench, water foumtain and details of the parking at time of Site Plan & Architectural Review. 7. The commission requested that the applicant look into providing for a pathway in the Urban Separator. ❖ The applicant has provided a conceptual design of a potential path within the Urban Separator. As noted by the applicant, a great deal of disfigurement of the terrain will be necessary to accommodate the path. Additional Information: Trees The applicant has provided a supplemental tree preservation and mitigation report from the project arborist, Horticultural Associates, dated October 1, 2008. The report indicates that a total of 12 additional trees will be impacted by the proposed development. These additional trees are along the "I" Street frontage of the property and the extent of the impacts to those trees were not known until the project conditions for improving "I" Street were better defined. Two of the trees which are being removed are noted in the Tree Preservation section (Chapter 17) of the Implementing Zoning Ordinance as protected trees (trees 6 and 9). It is staffs understanding that because of the grading and moving of the street as part of the improvements that's the trees will have to be removed. Staff will condition the project appropriately to include the planting of trees to mitigate the removal of the two Coast Live Oaks (Quercus agrifolia). 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 Urban Separator Path and Scenic Outlook As noted above the applicant has provided a conceptual design of a potential path within the Urban Separator. A great deal of disfigurement of the terrain would be necessary to accommodate the path if it has to be ADA complaint. It is staffs understanding that the applicant also met with the Petaluma Pedestrian and Bicycle Committee to discuss a potential path in the Urban Separator. Per the discussion with the bicycle committee a ridge trail path does not have to be ADA accessible. The bike committee would like to see a path. Staff has conditioned that the path be shown on plans submitted for SPARC review. Westridge Knolls Open Space The Commission had inquired about the adjacent open space, Westridge Knolls. Westridge Knolls Open Space was granted by the City of Petaluma to Sonoma Land Trust. Staff was able to obtain a copy of the Westridge Knolls Deed of Conservation Easement and Declaration of Restrictions (Attachment 7). Staff has provided an aerial map of the boundaries of the Westridge Knolls Open Space (Attachment 7). The easement exists in perpetuity over the property. The purpose of the Conservation Easement is "to assure that the property will be retained forever predominantly in its natural, scenic and open space condition and to prevent any use of the property that will significantly impair or interfere with the Conservation Values of the property. Grantor intends that this Conservation Easement will confine the use of the property to such activities, as are consistent with the purpose of this Conservation Easement." The Commission inquired about the possibilty of the Pinnacle Ridge property providing a connection to the Westridge Knolls Open Space. The Westridge Knolls deed (page 8) #9 states that, "no right of access by the general public to any portion of the property is conveyed by this Conservation Easement." Hillside Ordinance Staff has attached the Hillside Ordinance as a reference for the Commissioners (Attachment 7). The Hillside Ordinance notes on page 109 specific view platforms. In reviewing the proposed project from the noted view platforms the proposed project is not visible except at "I" Street from the City limit to the urban growth boundary. As noted above in the report, staff and the applicant met with Council member Rabbitt to determine specific view platforms or vantage point to assess the visual impacts of the development within the City. The following objectives of the Hillside Ordinance are intended to ensure that all hillside development is in compliance with the goals, policies, and implementing strategies of Petaluma's General Plan: • Ensure high quality projects. • Ensure that projects are designed to fit with and avoid site constraints. • Minimize the potential for geologic failures, fires, and floods that result from or adversely impact new development. • Maintain the natural, open space character of the hillsides. • Promote public enjoyment of the hillsides, including the creation of hillside biking biking trails and open space. ■ Maintain consistent visual character of Petaluma's hillside backdrop, for the community 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 as a whole, by discouraging developments of excessive visual prominence. ® Ensure that development does not dominate, but rather visually blends and achieves harmony between the natural and built environment. ® Conserve the natural features of the site such as topography, natural drainage, vegetation (including native and significant trees), wildlife habitats, movement corridors, and other physical features. • Promote sustainability. The visual analysis provided by the applicant should provide the Commission the information they need in determining that the project has met the intent of the hillside ordinance. South Hills Subarea As a correction to the September 91h staff report, staff inaccurately noted the subject property to be within the West Hills Subarea of the General Plan. The subject property is within the South Hills subarea. South Hills Subarea goals and policies are as follows: Goal 2-G-12 Reinforce the existing natural character of the hillside neighborhoods, preserving topography and ridgelines. 2-P-69 Limit residential densities to Very low and Low density Residential. 2-P-70 Extend the Urban Separator and/or Urban Separator Pathway. 2-P-71 Develop a strong gateway at I Street with landscape treatment and views of the Petaluma Valley. Maintain the rural character and interface of the adjacent outlying areas of the UGB when designing gateway improvements. 2-P-72 Preserve the existing public view sheds featuring the Petaluma Community. 2-P-73 Minimize grading to all extent possible, stepping development into and with the natural topography. 2-P-74 Preserve trees and enhance the natural woodland ecology of the South Hills subarea. Multi -Use Path The Commission requested the applicant provide the material of the multi -use path along "I" Street. The proposed path material is asphalt. Drainage The Commission requested that drainage be responded to in some format at the next meeting to address the concerns raised by the public. The applicants Civil Engineer, Steve Lafranchi will do a presentation to address the drainage at the Planning Commission meeting. Staff would also refer the Commission to the previous staff report and attachments which included the preliminary drainage report. The existing drainage pattern of the site will not be altered. No alteration of a drainage swale, stream, or river will occur. During construction the contractor will be required to adhere to City of Petaluma standards and regulation regarding storm water management and erosion controls measures. The proposed grading for the site will control all onsite storm water runoff and convey the runoff into a piped storm drain system. Similarly, the proposed offsite improvements will also contain all storm water runoff. No lot -to -lot drainage shall be permitted, unless private storm drain 1 easements are created to collect rear yard surface water runoff. Surface runoff shall be addressed 2 within the project, and then conveyed to an appropriate storm drain system. 4 Water Pressure 5 The Commission requested the water pressure concerns be addressed. Staff would refer the 6 Commission to the previous staff report packet attachments to review the Water Distribution 7 Calculations. Staff also asked the question of Water Resources and Conservation regarding the 8 loss of water pressure and if the proposed addition of 10 (there is already one meter there already 9 so they are adding to the system) residential water connections reduce the city supplied pressure to for all the existing homes in that area. Water Resources response was that the large 12" water it main extends to 2762 "I" Street which is the Pinnacle Ridge development. With water services 12 connecting to the large main it will not affect the customer farther out on the smaller main. 13 14 PUBLIC COMMENTS 15 16 At the writing of this staff report the following correspondence has been received: A letter from 17 Rachel Kaplan dated September 17, 2008. Ms. Kaplan's letter voices opposition to the proposed 18 project. Her letter raises concern regarding the loss of quality of life and the loss of the natural t9 beauty of the hillside if this proposed development is constructed (see Attachment 3). Two e- 20 mails were received from Shelly Campbell; both dated September 30, 2008. The first e-mail 21 refers to a link that she would like the Commissioners to review. This link is the Pinnacle Ridge 22 website. The 2"a e-mail from Ms. Campbell is more of notes or comments regarding the 23 Planning commission meeting of September 9, 2008. 24 25 26 ATTACHMENTS 27 28 Attachment 1: Draft Findings/Conditions 29 Draft Findings for a Mitigated Negative Declaration 30 Draft Findings for a Tentative Subdivision Map 31 Draft Findings for a PUD Amendment to Wetsridge Units 4 & 5 32 33 Attachment 2: Narrative from applicant dated 10/07/08 34 35 Attachment 3: Resolution 89-10, which approved the Unit Development Plan for Westridge 36 Units 4 & 5 37 38 Attachment 4: Correspondence 39 Letter from Rachel Kaplan dated September 17, 2008 40 Two e-mails from Shelly Campbell dated September 30, 2008 41 42 Attachment 5: Hillside Ordinance 43 44 Attachment 6: Tree Report from Horticultural Associates, dated October 1, 2008 45 46 I Attachment 7: Westridge Open Space Easement 2 Westridge Open Space Aerial Map 4 Attachment 8: Photo simulations and plans s:\planning\pc\reparts\pinnacle ridge act 28 2008 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 CITY OF PETALUMA, CALIFORNIA MEMORANDUM Comatttaity Development Departatent, Planning Divisioty 11 English Street, Petaltana, Cil 94952 (707) 778-4301 Fttc (707) 778-4498 E-mail: p1awdng@d.petahtm(Lca.us DATE: October 28, 2008 AGENDA ITEM NO. I TO: Planning Commission FROM: Irene T. Borba, Associate Planner SUBJECT: AN APPLICATION FOR TENTATIVE SUBDIVISION MAP TO SUBDIVIDE A 16.36 ACRE PARCEL AT 2762 "P' STREET INTO AN 11 -UNIT SUBDIVISION AND TO AMEND THE PUD -PLANNED UNIT DISTRICT OF WESTRIDGE UNITS 4 & 5 AND ASSOCIATED DEVELOPMENT PLAN AND PUD STANDARDS. CONTINUED FROM SEPTEMBER 9, 2008 7,Urq@T1 19 711T4 TLrvT1VJ Staff recommends that the Planning Commission consider the supplemental information provided in the packet. Although the proposed project appears to be generally consistent with the 2025 General Plan Land Use designation and densities, staff previously sought specific input from the Commission regarding applicable hillside and ridgeline policies; which the Commission provided. The Commission however requested specific visual analysis to help in their discussion/determination about the proposed densities and hillsides/ridgeline discussion. The supplemental information should provide the Commission with the information to determine if the project meets the intent of the General Plan and Hillside Ordinance. Should the Commission be in a position to forward a favorable recommendation Staff has included draft findings and conditions (see Attachment 1) for the following: 1. To Adopt a Mitigated Negative Declaration 2. To Approve the PUD Amendment to Westridge Units 4 & 5 and 3. To Approve the Tentative Subdivision Map for 11 Residential Units I 2 3 4 5 6 7 8 9 to 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 BACKGROUND The proposed project was heard at the September 9, 2008 Planning Commission meeting. Staff and the applicant presented the proposed project. The Commission took public testimony; the public hearing was closed. Some of the issues raised by members of the public included the following: • Conformance with Resolution 89-10, which approved the Unit Development Plan for Westridge Units 4 & 5 (see Attachment 2). • Density • Drainage/runoff • Clustering/feathering • Appropriateness of proposal with site and surroundings. • Loss of views. • Water pressure • Hillside slippage • Hillside/ridgelines The Commission asked the following be addressed: 1. The Planning Commission requested that the applicant provide a larger area map which showed the land uses and densities of the surrounding properties both within the current City boundaries and properties designated to come into the City sometime in the future. •3 The applicant has provided an area land use and density map. 2. The Commission requested site sections of the proposed project. ❖ The applicant has provided three cross-sections from various perspectives which depict the relationships between existing ground, finished grade, the street, and the proposed houses. 3. Provide additional visual analysis. Staff and Council member Rabbitt are to work with the applicant to determine the appropriate vantage points. Staff has attached the Hillside Ordinance as a reference for the Commissioners (Attachment 7). •S The applicant has provided new photo simulations from the view platforms determined to be appropriate by Council member Rabbitt and staff. The project is not visible from any of the view platforms listed in the City's Hillside Protection Ordinance with the exception of the I Street gateway which was previously shown to the Commission. The applicant met with City Councilman David Rabbitt and staff to evaluate the potential neighborhood sites to use as view platforms. After evaluation of the potential neighborhood vantage points, a total of seven (7) new visual simulations of the completed project were developed. These vantage points include the following: (1) from the highest point on the site looking back over the project towards the City; (2) from I Street at the intersection of Lot #9 and the Urban Separator which is further south on I Street than 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 the original visual (as requested by the PC); (3) from Wallenberg Way (approximately at 14 Wallenberg Way) off Sunnyslope Rd.; (4) from I Street just north of Grevillia Dr.; (5) from about 188 Grevillia Dr. just east of Black Oak; (6) from about 342 Purrington Rd.; and (7) from the open space behind the King residence off Black Oak. 4. Commission requested enhanced visual analysis of the proposed project. ❖ The applicant has included the following visual analysis: (1) inserting the trees proposed to be planted in the Private Open Space Easement at the rear of Lots 1, 2 and 3 in the visuals from Grevillia Drive; (2) inserting trees along the Public Open Space at the rear of Lots 4, 5 and 6. 5. The Commission requested that the applicant consider a private conservation easement on Lots 8 and 9 to prevent any building in this area by future homeowners. ❖ The applicant has agreed to include the conservation easement on Lots 8 and 9 which will help to enhance the rural character along I street. The map has been revised to note the conservation easement. 6. The Commission requested that parking be provided at the pump house for the public to be able to park and access the Urban Separator. It was also requested that a bench and water fountain be installed as well. The applicant has provided a plan illustrating the additional parking as requested by the Commission and staff will condition the project to provide the details, bench, water foumtain and details of the parking at time of Site Plan & Architectural Review. 7. The commission requested that the applicant look into providing for a pathway in the Urban Separator. ❖ The applicant has provided a conceptual design of a potential path within the Urban Separator. As noted by the applicant, a great deal of disfigurement of the terrain will be necessary to accommodate the path. Additional Information: Trees The applicant has provided a supplemental tree preservation and mitigation report from the project arborist, Horticultural Associates, dated October 1, 2008. The report indicates that a total of 12 additional trees will be impacted by the proposed development. These additional trees are along the "I" Street frontage of the property and the extent of the impacts to those trees were not known until the project conditions for improving "I" Street were better defined. Two of the trees which are being removed are noted in the Tree Preservation section (Chapter 17) of the Implementing Zoning Ordinance as protected trees (trees 6 and 9). It is staffs understanding that because of the grading and moving of the street as part of the improvements that's the trees will have to be removed. Staff will condition the project appropriately to include the planting of trees to mitigate the removal of the two Coast Live Oaks (Quercus agrifolia). 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 Urban Separator Path and Scenic Outlook As noted above the applicant has provided a conceptual design of a potential path within the Urban Separator. A great deal of disfigurement of the terrain would be necessary to accommodate the path if it has to be ADA complaint. It is staffs understanding that the applicant also met with the Petaluma Pedestrian and Bicycle Committee to discuss a potential path in the Urban Separator. Per the discussion with the bicycle committee a ridge trail path does not have to be ADA accessible. The bike committee would like to see a path. Staff has conditioned that the path be shown on plans submitted for SPARC review. Westridge Knolls Open Space The Commission had inquired about the adjacent open space, Westridge Knolls. Westridge Knolls Open Space was granted by the City of Petaluma to Sonoma Land Trust. Staff was able to obtain a copy of the Westridge Knolls Deed of Conservation Easement and Declaration of Restrictions (Attachment 7). Staff has provided an aerial map of the boundaries of the Westridge Knolls Open Space (Attachment 7). The easement exists in perpetuity over the property. The purpose of the Conservation Easement is "to assure that the property will be retained forever predominantly in its natural, scenic and open space condition and to prevent any use of the property that will significantly impair or interfere with the Conservation Values of the property. Grantor intends that this Conservation Easement will confine the use of the property to such activities, as are consistent with the purpose of this Conservation Easement." The Commission inquired about the possibilty of the Pinnacle Ridge property providing a connection to the Westridge Knolls Open Space. The Westridge Knolls deed (page 8) #9 states that, "no right of access by the general public to any portion of the property is conveyed by this Conservation Easement." Hillside Ordinance Staff has attached the Hillside Ordinance as a reference for the Commissioners (Attachment 7). The Hillside Ordinance notes on page 109 specific view platforms. In reviewing the proposed project from the noted view platforms the proposed project is not visible except at "I" Street from the City limit to the urban growth boundary. As noted above in the report, staff and the applicant met with Council member Rabbitt to determine specific view platforms or vantage point to assess the visual impacts of the development within the City. The following objectives of the Hillside Ordinance are intended to ensure that all hillside development is in compliance with the goals, policies, and implementing strategies of Petaluma's General Plan: • Ensure high quality projects. • Ensure that projects are designed to fit with and avoid site constraints. • Minimize the potential for geologic failures, fires, and floods that result from or adversely impact new development. • Maintain the natural, open space character of the hillsides. • Promote public enjoyment of the hillsides, including the creation of hillside biking biking trails and open space. ■ Maintain consistent visual character of Petaluma's hillside backdrop, for the community 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 as a whole, by discouraging developments of excessive visual prominence. ® Ensure that development does not dominate, but rather visually blends and achieves harmony between the natural and built environment. ® Conserve the natural features of the site such as topography, natural drainage, vegetation (including native and significant trees), wildlife habitats, movement corridors, and other physical features. • Promote sustainability. The visual analysis provided by the applicant should provide the Commission the information they need in determining that the project has met the intent of the hillside ordinance. South Hills Subarea As a correction to the September 91h staff report, staff inaccurately noted the subject property to be within the West Hills Subarea of the General Plan. The subject property is within the South Hills subarea. South Hills Subarea goals and policies are as follows: Goal 2-G-12 Reinforce the existing natural character of the hillside neighborhoods, preserving topography and ridgelines. 2-P-69 Limit residential densities to Very low and Low density Residential. 2-P-70 Extend the Urban Separator and/or Urban Separator Pathway. 2-P-71 Develop a strong gateway at I Street with landscape treatment and views of the Petaluma Valley. Maintain the rural character and interface of the adjacent outlying areas of the UGB when designing gateway improvements. 2-P-72 Preserve the existing public view sheds featuring the Petaluma Community. 2-P-73 Minimize grading to all extent possible, stepping development into and with the natural topography. 2-P-74 Preserve trees and enhance the natural woodland ecology of the South Hills subarea. Multi -Use Path The Commission requested the applicant provide the material of the multi -use path along "I" Street. The proposed path material is asphalt. Drainage The Commission requested that drainage be responded to in some format at the next meeting to address the concerns raised by the public. The applicants Civil Engineer, Steve Lafranchi will do a presentation to address the drainage at the Planning Commission meeting. Staff would also refer the Commission to the previous staff report and attachments which included the preliminary drainage report. The existing drainage pattern of the site will not be altered. No alteration of a drainage swale, stream, or river will occur. During construction the contractor will be required to adhere to City of Petaluma standards and regulation regarding storm water management and erosion controls measures. The proposed grading for the site will control all onsite storm water runoff and convey the runoff into a piped storm drain system. Similarly, the proposed offsite improvements will also contain all storm water runoff. No lot -to -lot drainage shall be permitted, unless private storm drain 1 easements are created to collect rear yard surface water runoff. Surface runoff shall be addressed 2 within the project, and then conveyed to an appropriate storm drain system. 4 Water Pressure 5 The Commission requested the water pressure concerns be addressed. Staff would refer the 6 Commission to the previous staff report packet attachments to review the Water Distribution 7 Calculations. Staff also asked the question of Water Resources and Conservation regarding the 8 loss of water pressure and if the proposed addition of 10 (there is already one meter there already 9 so they are adding to the system) residential water connections reduce the city supplied pressure to for all the existing homes in that area. Water Resources response was that the large 12" water it main extends to 2762 "I" Street which is the Pinnacle Ridge development. With water services 12 connecting to the large main it will not affect the customer farther out on the smaller main. 13 14 PUBLIC COMMENTS 15 16 At the writing of this staff report the following correspondence has been received: A letter from 17 Rachel Kaplan dated September 17, 2008. Ms. Kaplan's letter voices opposition to the proposed 18 project. Her letter raises concern regarding the loss of quality of life and the loss of the natural t9 beauty of the hillside if this proposed development is constructed (see Attachment 3). Two e- 20 mails were received from Shelly Campbell; both dated September 30, 2008. The first e-mail 21 refers to a link that she would like the Commissioners to review. This link is the Pinnacle Ridge 22 website. The 2"a e-mail from Ms. Campbell is more of notes or comments regarding the 23 Planning commission meeting of September 9, 2008. 24 25 26 ATTACHMENTS 27 28 Attachment 1: Draft Findings/Conditions 29 Draft Findings for a Mitigated Negative Declaration 30 Draft Findings for a Tentative Subdivision Map 31 Draft Findings for a PUD Amendment to Wetsridge Units 4 & 5 32 33 Attachment 2: Narrative from applicant dated 10/07/08 34 35 Attachment 3: Resolution 89-10, which approved the Unit Development Plan for Westridge 36 Units 4 & 5 37 38 Attachment 4: Correspondence 39 Letter from Rachel Kaplan dated September 17, 2008 40 Two e-mails from Shelly Campbell dated September 30, 2008 41 42 Attachment 5: Hillside Ordinance 43 44 Attachment 6: Tree Report from Horticultural Associates, dated October 1, 2008 45 46 I Attachment 7: Westridge Open Space Easement 2 Westridge Open Space Aerial Map 4 Attachment 8: Photo simulations and plans s:\planning\pc\reparts\pinnacle ridge act 28 2008 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 DRAFT FINDINGS FOR A MITIGATED NEGATIVE DECLARATION ATTACHMENT 1 DRAFT FINDINGS FOR ADOPTION OF A MITIGATED NEGATIVE DECLARATION Pinnacle Ridge Subdivision 2762 "I" Street APN 019-401- 019 Project File No. 05-ZOA-0029-CR Findines for ADnroval of a Mitigated Negative Declaration: 1. That based upon the Initial Study, potential impacts resulting from the project have been identified. Mitigation measures have been proposed and agreed to by the applicant as a condition of project approval that will reduce potential impacts to less than significant. In addition, there is no substantial evidence that supports a fair argument that the project, as conditioned and mitigated, would have a significant effect on the environment. 2. That the project does not have the potential to affect wildlife resources as defined in the State Fish and Game Code, either individually or cumulatively, and is exempt from Fish and Game filing fees because it is proposed on an existing undeveloped site surrounded by urban development. 3. That the project is not located on a site listed on any Hazardous Waste Site List compiled by the State pursuant to Section 65962.5 of the California Government Code. 4. That the Planning Commission reviewed the Initial Study and considered public comments before making a recommendation on the project. 5. That a Mitigation Monitoring Program has been prepared to ensure compliance with the adopted mitigation measures. 6. That the record of proceedings of the decision on the project is available for public review at the City of Petaluma Planning Division, City Hall, 11 English Street, Petaluma, California. MITIGATION MEASURES: Geoloev and Soils. 1. As deemed appropriate, the recommendations as outlined in the Geotechnical investigation prepared by Bauer Associates dated January 2005 shall be incorporated. 2. All earthwork, grading, trenching, backfilling, and compaction operations shall be conducted in accordance with the City of Petaluma's Subdivision Ordinance (#1046, Title 20, Chapter 20.04 of the Petaluma Municipal Code) and Grading and Erosion Control Ordinance 41576, Title 17, Chapter 17.31 of the Petaluma Municipal Code). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 3. The project sponsor shall submit an Erosion and Sediment Control Plan prepared by a registered professional engineer as an integral part of the grading plan. The Erosion and Sediment Control Plan shall be subject to review and approval of Public Works, prior to issuance of a grading permit. The Plan shall include temporary erosion control measures to be used during construction of cut and fill slopes, excavation for foundations, and other grading operations at the site to prevent discharge of sediment and contaminants into the drainage system. The Erosion and Sediment Control Plan shall include the following measures as applicable: a. Throughout the construction process, disturbance of groumdcover shall be minimized and the existing vegetation shall be retained to the extent possible to reduce soil erosion. All construction and grading activities, including short- term needs (equipment staging areas, storage areas, and field office locations) shall minimize the amoumt of land area disturbed. Whenever possible, existing disturbed areas shall be used for such purposes. b. All drainage -ways, wetland areas and creek channels shall be protected from silt and sediment in storm runoff through the use of silt fences, diversion berms, and check dams. All exposed surface areas shall be mulched and reseeded and all cut and fill slopes shall be protected with hay mulch and/or erosion control blankets as appropriate. C. Material and equipment for implementation of erosion control measures shall be on-site by October lst. All grading activity shall be completed by October 15th, prior to the on -set of the rainy season, with all disturbed areas stabilized and re -vegetated by October 31st. Upon approval by the Petaluma City Engineer, extensions for short-term grading may be allowed. The Engineering Section in conjunction with any specially permitted rainy season grading may require special erosion control measures. 4. All construction activities shall meet the Uniform Building Code regulations for seismic safety (i.e., reinforcing perimeter and/or load bearing walls, bracing parapets, etc.). 5. All public and private improvements shall be subject to inspection by City staff for compliance with the approved Improvement Plans, prior to City acceptance. 6. Foundation and structural design for buildings shall conform to the requirements of the Uniform Building Code, as well as state and local laws/ordinances. Construction plans shall be subject to review and approval by the Building Division prior to the issuance of a building permit. All work shall be subject to inspection by the Building Division and must conform to all applicable code requirements and approved improvement plans prior to issuance of a Certificate of Occupancy. 7. Prior to issuance of a grading or building permit, the project sponsor shall submit a detailed schedule for field inspection of work in progress to ensure that all applicable 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 codes, conditions and mitigation measures are being properly implemented through construction of the project. 8. The Site Plan and Architectural Review Committee (SPARC) shall review and approve the landscaping plans, which show how disturbed areas are to be replanted. Any changes to the landscaping plan as required by SPARC shall be incorporated into plans that are submitted for building permit issuance. 9. Prior to issuance of a grading permit, building permit or approval of an improvement plan or Final Map, the project sponsor shall provide a Soils Investigation and Geotechnical Report prepared by a registered professional civil engineer for review and approval of the City Engineer and Chief Building Official in accordance with the Subdivision Ordinance and Grading and Erosion Control Ordinance. The soils report shall address site specific soil conditions (i.e. highly expansive soils) and include recommendations for site preparation and grading; foundation and soil engineering design; pavement design, utilities, roads, bridges and structures. 10. The design of all earthwork, cuts and fills, drainage, pavements, utilities, foundations and structural components shall conform with the specifications and criteria contained in the geotechnical report, as approved by the City Engineer. The geotechnical engineer shall sign the improvement plans and certify the design as conforming to the specifications. The geotechnical engineer shall also inspect the construction work and shall certify to the City, prior to acceptance of the improvements or issuance of a certificate of occupancy that the improvements have been constructed in accordance with the geotechnical specifications. Construction and improvement plans shall be reviewed for conformance with the geotechnical specifications by the Engineering Section of the Community Development Department and the Chief Building Official prior to issuance of grading or building permits and/or advertising for bids on public improvement projects. Additional soils information may be required by the Chief Building Inspector during the plan check of building plans in accordance with Title 17 and 20 of the Petaluma Municipal Code. Hvdroloav and Water: 1. All construction activities shall be performed in a manner that minimizes the sediment and/or pollutants entering directly or indirectly into the storm drain system or ground water. The applicant shall incorporate the following provisions into the construction plans and specifications, to be verified by the Community Development Department, prior to issuance of grading or building permits. a. The applicant shall designate construction staging area and areas for storage of any hazardous materials (i.e. motor oil, fuels, paints, etc.) used during construction on the improvement plans. All construction staging areas shall be located away from any stream and adjacent drainage areas to prevent runoff from construction areas from entering into the drainage system. Areas designated for storage of hazardous materials shall include proper containment features to prevent contaminants from entering drainage areas in the event of a spill or leak. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 b. No debris, soil, silt, sand, cement, concrete or washings thereof, or other construction related materials or wastes, oil or petroleum products or other organic or earthen material shall be allowed to enter any drainage system. All discarded material including washings and any accidental spills shall be removed and disposed of at an approved disposal site. The applicant shall designate appropriate disposal methods and/or facilities on the construction plans or in the specifications. c. No heavy equipment shall be operated in any live creek channel. All in -stream channel work shall be limited to the dry season (typically defined as May ls` through October 15th and performed in accordance with conditions specified by the Department of Fish and Game in a Streambed Alteration Agreement. The Department of Fish and Game may require a more limited construction period in stream channels that support anadromous fisheries. Applicant shall provide copy of the approved Streambed Alteration Agreement and proof of compliance with the permit conditions prior to approval of improvement plans or issuance of grading permits for work within any channel. 2. The applicant shall submit the required Notice of Intent for compliance with the conditions for a general permit under the National Pollutant Discharge Eliminate System (NPDES) storm water permit for construction activities administered by the State of California Regional Water Quality Control Board. The conditions require development and implementation of a Storm Water Pollution Prevention Plan (SWPPP), which may also meet the City's requirement for an Erosion and Sediment Control Plan, noted above. 3. Prior to issuance of a grading or building permit or approval of any improvement plans for earthwork within any creek corridor or identified wetland site, proof of authorization from all applicable responsible agencies including, but not limited to, the U.S. Army Corps of Engineers, the California Regional Water Quality Control Board, and the California Department of Fish and Game, shall be submitted by the applicant to the Community Development Department. 4. The applicant shall submit a detailed grading and drainage plan for review and approval by the Public Works Department prior to approval of a final map, improvement plan, grading or building permit. The project grading and all site drainage improvements shall be designed and constructed in conformance with the City of Petaluma Community Development Department's "Standard Specifications" and the Sonoma County Water Agency's "Flood Control Design Criteria". Channel modifications and bank stabilization improvements within a natural stream channel shall be designed in conformance with the City's "Restoration Design and Management Guidelines". The drainage plans shall include supporting calculations of storm drain and culvert size using acceptable engineering methods. No lot -to -lot drainage shall be permitted. Surface runoff shall be addressed within each individual lot, and then conveyed to an appropriate storm drain system. All hydrologic, hydraulic and storm drain system design shall be subject to review and approval of the Sonoma County Water Agency (SCWA) and the City Engineer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Biological: 1. No trees or limbs of the oak trees described in the Wildlife Research Associates report shall be removed without first having a qualified bat biologist conduct emergence surveys to determine presence or absence of day roosting bats. No machinery shall be parked or used beneath the trees, to prevent fumes and noise from impacting bats that may be roosting inside tree cavities. If no bats are observed emerging from cavities in the oaks, the trees shall be removed within 48 hours. If no bats are observed, then tree removal shall occur only between February 15 and April 15, or between August 15 and October 15, in order to avoid impacts to non-volant young or torpid adult bats that may be roosting in cavities in the trees. 2. Conduct construction activities during summer months when the roadside drainage ditch is dry to prevent impacts to water quality. 3. Construction activities may result in erosion and sedimentation of downstream aquatic habitats. Sediment transport from construction activities to the roadside drainage ditch and downstream aquatic habitats can have deleterious effects on aquatic organisms in these aquatic habitats and result in violations of State and Federal water quality regulations. 4. Ensure that best management practices are adopted in order to minimize the amount of sediment leaving the site during construction activities. 5. Prior to issuance of development permits, obtain a general permit for Strom Water Discharges from Construction Activities through the SFBRWQCB. 6. Prior to issuance of development permits, prepare and implement a Storm Water Pollution Prevention Plan for construction activities. 7. Construction and landscaping activities may result in impacts to valley oak tree. Construction and landscaping activities at Lot 8 should avoid impacts to the valley oak tree. Prior to issuance of development permits, protective fencing shall be installed. Fencing should encompass the entire canopy of the tree to prevent impacts to its roots and drip line. 8. Landscaping and irrigation should be designed to not impact the roots and drip line of the valley oak tree. Visual Oualitv and Aesthetics: 1. All exterior lighting shall be directed onto the project site and access ways and shielded to prevent glare and intrusion onto adjacent residential properties and natural/undeveloped areas. Plans submitted for SPARC review and approval shall incorporate lighting plans, which reflect the location and design of all proposed streetlights, and any other exterior lighting proposed. 1 2. Development plans shall be designed to avoid vehicular lighting impacts to bedroom areas 2 and other light-sensitive living areas of any nearby residential lot, home or facility. 3 Development plans for lots proposed at street intersections or in other potentially light - 4 sensitive locations shall incorporate architectural or landscape design features to screen 5 interior living space from headlight glare. 3 7 3. No illumination shall be installed within the designated open space area except for low - 8 level lighting along designated pathways adjacent to public streets. The improvement and 9 landscape plans prepared for the project shall reflect the location and design details of all 10 light fixtures proposed. Said locations and details shall be reviewed and approved by the 11 Site Plan and Architectural Review Committee prior to issuance of development permits. 12 13 4. Shade trees shall be incorporated into building and improvement plans along public streets 14 and within parking areas in conformance with the City's Site Plan and Architectural 15 Review Guidelines to reduce glare and to provide shade. 16 17 5. All new and existing overhead utilities (except for high voltage transmission lines) shall be 18 placed underground. 19 20 6. Architectural details, landscape plans and specifications, and detailed site plans shall be 21 subject to review and approval by the Site Plan and Architectural Review Committee prior 22 to issuance of development permits. 23 24 Mitieation Measures/Monitorine: 25 26 IMPLEMENTATION: 27 28 L The applicant shall be required to obtain all required permits from responsible agencies and 29 provide proof of compliance to the City prior to issuance of grading permits or approvals of 30 improvements plans. 31 32 2. The applicant shall incorporate all applicable code provisions and required mitigation 33 measures and conditions into the design and improvements plans and specifications for the 34 project. 35 36 3. The applicant shall notify all employees, contractors, and agents involved in the project 37 implementation of mitigation measures and conditions applicable to the project and shall 38 ensure compliance with such measures and conditions. Applicant shall notify all assigns 39 and transfers of the same. 40 41 4. The applicant shall provide for the cost of monitoring of any condition or mitigation 42 measure that involves on-going operations on the site or long-range improvements, such as 43 archaeological resources, etc. 44 45 46 47 1 2 3 4 5 6 7 8 9 10 it 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 MONITORING: 1. The Building Division, Planning Division, Public Works Department and Fire Departments shall review the improvement and construction plans for conformance with the approved project description and all applicable codes, conditions, mitigation measures, and permit requirements prior to approval of a site design review, improvement plans, grading plans, or building permits. 2. The Planning Division shall ensure that the applicant has obtained applicable required permits from all responsible agencies and that the plans and specifications conform to the permit requirements prior to the issuance of grading or building permits. 3. Prior to acceptance of improvements or issuance of a Certificate of Occupancy, all improvements shall be subject to inspection by City staff for compliance with the project description, permit conditions, and approved development or improvement plans. CONSTRUCTION MEASURES: 1. The applicant shall designate a project manager with authority to implement all mitigation measures and conditions of approval and provide name, address, and phone numbers to the City prior to issuance of any grading permits and signed by the contractor responsible for construction. 2. Mitigation measures required during construction shall be listed as conditions on the building or grading permits and signed by the contractor responsible for construction. 3. City inspectors shall insure that construction activities occur with the approved plans and conditions of approval. 4. If deemed appropriate by the City, the applicant shall arrange a pre -construction conference with the construction contractor, City staff and responsible agencies to review the mitigation measures and conditions of approval prior to the issuance of grading and building permits. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 DRAFT FINDINGS FOR A TENTATIVE SUBDIVISION ATTACHMENT1 DRAFT FINDINGS FOR A TENTATIVE SUBDIVISION MAP Pinnacle Ridge Subdivision 2761 "I" Street APN 019-401- 019 Project File No. 05-ZOA-0029-CR FINDINGS FOR A TENTATIVE SUBDIVISION MAP: 1. The proposed Tentative Subdivision Map, as conditioned, is consistent with the provisions of Title 20, Subdivisions, of the Municipal Code (Subdivision Ordinance) and the State Subdivision Map Act. 2. That the proposed subdivision, together with provisions for its design and improvements, is consistent with the General Plan, and will not be detrimental to the public health, safety, or welfare in that adequate public facilities exist or will be installed, including roads, sidewalks, water, sewer, storm drains, and other infrastructure. 3. That the site is physically suitable for the density and the type of development proposed. 4. That the design of the subdivision and the proposed improvements will not cause substantial environmental damage, and that no substantial or avoidable injury will occur to fish or wildlife or their habitat. An Initial Study was prepared indicating that there would be no significant, environmental impacts that could not be mitigated. DRAFT CONDITIONS OF APPROVAL: From Plannine: 1. Before issuance of any development permit, the applicant shall revise the site plan or other first sheet of the office and job site copies of the Building Permit plans to list these Conditions of Approval and the Mitigation Measures as notes. 2. The plans submitted for building permit review shall be in substantial compliance with the plans dated stamped August 21, 2008. 3. All mitigation measures adopted in conjunction with the Mitigated Negative Declaration for the Pinnacle Ridge project are herein incorporated by reference as conditions of project approval. 4. Upon approval by the City Council, the applicant shall pay the Notice of Determination fee to the Planning Division. The check shall be made payable to the County Clerk. Planning 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 staff will file the Notice of Determination with the County Clerk's office within five (5) days of receiving Council approval. The State Department of Fish and Game has found that a de minimis determination is not appropriate, and that an environmental filing fee (as required under Fish and Game Code Section 711.4d) must be paid to the Sonoma County Clerk on or before the filing of the Notice of Determination (for fee amount, contact them at 944-5500). 5. The building elevations, site plans, landscape plan, Design Guidelines and Development Standards and Gateway Improvements are subject to the review and approval of the Site Plan and Architectural Review Committee prior to issuance of any grading or building permits. 6. Public access pathways and appropriate landscaping, scenic overlook areas where appropriate, and fencing along the entire length of the urban separator shall be provided by the developer through the development review process, in concert with project design at time of SPARC review. 7. Plans submitted for Site Plan & Architectural Review shall include on the plans the required trees per the Tree Preservation Ordinance (Chapter 17 of the IZO) to replace the removal of the two Coast Live Oaks as noted in the Horticultural and Associates Report dated October 1, 2008. 8. Plans submitted for Site Plan & Architectural Review shall include the details of the parking at the location of the pump -house for public parking. Said plans shall also illustrate a bench and drinking fountain. 9. Plans submitted for SPARC review shall include the Urban Separator Pathway; its location and details. 10. At time of submittal for SPARC review, the PUD Guidelines shall be revised to include language regarding the open space easements for Lots 8 & 9. 11. All work within a public right-of-way requires an encroachment permit from the Community Development Department. 12. A reproducible copy of the finalized PUD Development Plan and written PUD Standards and Design Guidelines incorporating all project conditions of approval shall be submitted to the Community Development Department prior to Final Map recordation. 13. Plans submitted for Final Map shall include the language pertaining to the dedication to the City of Petaluma for the Urban Separator and Urban Separator Pathway. Per the General Plan the urban separator shall be dedicated to the City at no cost for the City for the land or required interface improvements. Public access pathways and appropriate landscaping, scenic overlook areas where appropriate, and fencing along the entire length of the urban separator shall be provided by the developer through the development review process, in concert with project design. Maintenance of the Urban Separator shall be in perpetuity the 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 responsibility of the development through a guaranteed funding source, such as a Landscape Assessment District and/or a funded trust. 14. A reproducible copy of the Tentative Subdivision Map, reflecting all adopted conditions of approval, shall be submitted to the Community Development Department prior to Final Map recordation. 15. The applicant shall incorporate the following Best Management Practices into the construction and improvement plans and clearly indicate these provisions in the specifications. The construction contractor shall incorporate these measures into the required Erosion and Sediment Control Plan to limit fugitive dust and exhaust emissions during construction. a. Grading and construction equipment operated during construction activities shall be properly muffled and maintained to minimize emissions. Equipment shall be turned off when not in use. b. Exposed soils shall be watered periodically during construction, a minimum of twice daily. The frequency of watering shall be increased if wind speeds exceed 15mph. Only purchased city water or reclaimed water shall be used for this purpose. Responsibility for watering shall include weekends and holidays when work is not in progress. C. Construction sites involving earthwork shall provide for a gravel pad area consisting of an impermeable liner and drain rock at the construction entrance to clean mud and debris from construction vehicles prior to entering the public roadways. Street surfaces in the vicinity of the project shall be routinely swept and cleared of mud and dust carried onto the street by construction vehicles. d. During excavation activities, haul trucks used to transport soil shall utilize tarps or other similar covering devices to reduce dust emissions. C. Post -construction re -vegetation, repaving or soil stabilization of exposed soils shall be completed in a timely manner according to the approved Erosion and Sediment Control Plan and verified by City inspectors prior to acceptance of improvements or issuance of a certificate of occupancy. f. Applicant shall designate a person with authority to require increased watering to monitor the dust and erosion control program and provide name and phone number to the City of Petaluma prior to issuance of grading permit. 16. All residential units designed with fireplaces shall meet the requirements of Ordinance 1881 N.C.S. for clean -burning fuels. 17. Improvement plans shall indicate that all construction activities shall be limited to 7:00 a.m. to 5:30 p.m. Monday through Friday and 9:00 a.m. to 5:00 p.m. on Saturdays. I Construction shall be prohibited on Sundays and all holidays recognized by the City of 2 Petaluma, unless a permit is first secured from the City Manager (or his/her designee) for 3 additional hours. There will be no start up of machines or equipment prior to 7:00 a.m., 4 Monday through Friday; no delivery of materials or equipment prior to 7:00 a.m. or past 5 5:00 p.m., Monday through Friday; no servicing of equipment past 6:00 p.m., Monday G through Friday. Plans submitted for City permits shall include the language above. 7 8 18. Plans submitted for building permit shall include pre -wiring for solar facilities for each 9 dwelling and are subject to staff review and approval. to 11 19. Improvement plans shall indicate that construction and demolition debris shall be 12 recycled to the maximum extent feasible in order to minimize impacts on the landfill. 13 14 20. Prior to issuance of a building permit, temporary protective fencing shall be erected 5 feet 15 outside the drip line of the remaining oaks. The fencing shall be a minimum of 5 feet in 16 height and shall be secured with in -ground posts subject to staff inspection. Fencing shall 17 be installed prior to grading permit issuance and any grading/construction activity. Proof 18 that the temporary fencing has been installed shall be made to the Planning Division by 19 photographs. 20 21 21. The applicant shall be required to utilize Best Management Practices regarding 22 pesticide/herbicide use and fully commit to Integrated Pest Management techniques for 23 the protection of pedestrian/bicyclists. The applicant shall be required to post signs when 24 pesticide/herbicide use occurs to warn pedestrians and bicyclists. 25 26 22. All project lighting shall be downcast to prevent glare into pedestrians and bicyclists 27 eyes. 28 29 23. All exterior lighting shall be directed onto the project site and access ways and shielded to 30 prevent glare and intrusion onto adjacent residential properties and natural/undeveloped 31 areas. Plans submitted for SPARC review and approval shall incorporate lighting plans, 32 which reflect the location and design of all proposed streetlights, and any other exterior 33 lighting proposed. 34 35 24. All new and existing overhead utilities (except for high voltage transmission lines) shall be 36 placed underground. 37 38 25. The applicant shall defend, indemnify, and hold harmless the City or any of its boards, 39 commissions, agents, officers, and employees from any claim, action, or proceeding 40 against the City, its boards, commissions, agents, officers, or employees to attack, set 41 aside, void, or annul any of the approvals of the project when such claim or action is 42 brought within the time period provided for in applicable State and/or local statutes. The 43 City shall promptly notify the applicants/developers of any such claim, action, or 44 proceeding. The City shall coordinate in the defense. Nothing contained in this condition 45 shall prohibit the City from participating in a defense of any claim, action, or proceeding 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 and if the City chooses to do so appellant shall reimburse City for attorneys fees by the City. From Public works (Engineering) The following conditions shall be addressed at the time of final map and improvement plan application. FIonta$e Improvements 26. Match the existing I Street improvements constructed with the adjacent Westridge Subdivision and extend improvements to the southerly side of Parcel C. The street configuration shall include a 5 -foot sidewalk, travel lane and bike lane (southbound), travel lane and bike lane (northbound). The minimum pavement section shall be 5 -inches of asphalt concrete over 15 -inched of class 2 aggregate base. A standard driveway approach and driveway shall be provided to the pump station. 27. South of Parcel C, to the City Limits, the street shall be relocated to the center of the existing 40 -foot right-of-way. The street section on the project side shall include constriction of a 12 -foot vehicle lane and a 6 -foot on -street bike lane. The street section shall also include constriction of a northbound 12 -foot vehicle lane. The minimum pavement section shall be 5 -inches of asphalt concrete over 15 -inches of class 2 aggregate base. Constrict an appropriate transition from the new improvements to the existing road at the City Limit to the satisfaction of the City Engineer. 28. Street lights, traffic signs, striping and pavement markers shall be installed. "No parking" signs shall be installed along the project frontage. 29. The necessary right-of-way and public utility easement shall be dedicated along I Street to construct the public improvements described in the conditions of approval and shown on the tentative map. Grading 30. Grading and slide repairs shall conform to the geotechnical investigation report specific to this development. Slide repairs shall be completed to protect the new development and the public right-of-way along I Street. 31. Investigate and address the subsurface water issue along the subdivision boundary at lots 1, 2 & 3. The report and solution shall be to the satisfaction of the City Engineer. Private Street 32. The minimum private street pavement section shall be 4 -inches of asphalt concrete over 12 -inches of class 2 aggregate base. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 33. A stop sign and crosswalk shall be installed on the private street at the new intersection. "No Parking" signs shall be installed around the perimeter of the cul-de-sac bulb, along the private driveway serving lots 6-9 and in the emergency turnaround. 34. Street lights shall be installed along the private street. Water, Sanitary Sewer and Storm Drain Systems 35. The storm drain system and sanitary sewer system in the private street and on private property shall be private and privately maintained. The storm drain across lot 9 shall be directed to I street without passing through lot 11. 36. Extend public the water main, sanitary sewer main and storm drain system to the southerly side of parcel C and convert any existing services to the new mains. 37. All new water services shall be 1.5 -inches with 1 -inch meters. Locate the meters on I street at the pump house. Individual domestic water booster pumps shall be provided for all parcels. 38. The public storm drain system design shall be reviewed and approved by the Sonoma County Water Agency. 39. The water main and fire pump system shall be capable of delivering a continuous fire flow as required by the Fire Marshal. The fire pump system and equipment shall be maintained and funded by the homeowner association. Easements 40. All necessary easements shall be dedicated on the final map. 41. Parcel A shall include private access, emergency vehicle access, private storm drain, private sanitary sewer, private fire line, private surface drainage and public water main easements. 42. The private driveway serving lots 6-9 shall include private access, emergency vehicle access, private water line, private fire line and private surface drainage. Miscellaneous 43. Overhead utilities along the project frontage shall be placed underground from the utility pole across from lot 1 to the first utility pole south of the property line between lot 9 and the urban separator. 44. Erosion control and water quality control measures shall be employed. The necessary documentation shall be filed as required by the responsible agencies. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 45. Maintenance agreements shall be required for any shared utilities or facilities and shall be recorded with the final map. Agreements shall identify the utility or facility to be maintained, the parties responsible for maintenance and the funding mechanism for maintenance, replacement and repair. All agreements shall be reviewed and approved prior to recordation. 46. Prepare final map and improvement plans per the latest City policies, standards, codes, resolutions and ordinances. Technical review deposits shall be required at the time of application submittal. 47. Provide formal appraisals for developer contributions as required by GASB 34 (Governmental Accounting Standards Board, Statement 34). 48. The project shall comply with the City of Petaluma Phase II Storm Water Management Plan including attachment four post construction requirements. The homeowners association shall be responsible for providing a yearly inspection and maintenance report for the proposed storm drain separator. From the Fire Marshal: This project is in substantial conformance with emergency vehicle access, water supply, and other Fire Department conditions, excepting the conditions noted below: 49. The Fire Department is requiring an independent, third -party evaluation of the proposed solution to the water supply issue. The Fire Marshal is authorized to approve alternate materials or methods as prescribed in California Fire Code Section 103.1.1, which allows the Fire Department a technical opinion or report without cost to the jurisdiction. This report shall be completed by a fire protection engineer as agreed upon by the developer and the Fire Marshal. 50. The Fire Marshal has reviewed the 9/2/05 letter (Pinnacle Ridge meeting notes) fiom LaFranchi and Associates and accepts the conclusion/conditions noted in the letter, including fire flow calculations for available pressure/gpm flow on the suction side of the pump. Final approval of assumptions and conclusions are subject to review by a third - party technical opinion. 51. Residual pressure for hydrant #3 is marginal, based on 1500 gpm at 20 psi. Connect hydrant #3 to the fire pump to improve the residual pressure and flow. Also, relocate hydrant #3 to property line between Lots 3 and 4. 52. The turnaround for Lots 6, 7, and 8 is acceptable. 53. The perimeter edge of the canoe turnaround, in the cul-de-sac, must be reduced by a minimum of V to assure maximum maneuverability of fire department apparatus. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 54. Provide an address monument sign, acceptable to the Fire Marshal for Lots 6-9, with a minimum of 4" letters on contrasting background with lighted or reflected numbers. 55. Provide a minimum of 12' access gate or other proposed alternate (including the driveway cut and the graded roadway minimrun of 10' inside of gate), from I Street to the urban separator for Fire Department use to suppress brush/grass fires. 56. The open space areas shall contain disked trails, perimeters, and intermediate fire breaks across the middle to discourage the rapid spread of fire. Such fire abatement practices shall be completed on an annual basis. A site plan outlining the firebreaks shall be submitted to the Fire Marshal's office for approval as part of the landscaping plans submitted with the building permit. Plans shall also reflect a notation that requires the HOA or LAD to maintain the fire breaks annually. 57. This structure is within the boundaries of the Very High Fire Hazard Severity Zone (VHFHSZ). Buildings constructed in this zone are subject to the requirements outlined in Section 17.20.060 of the Petaluma Municipal Code. From the Water Resources & Conservation: 58. Due to high pad elevations, air gap booster systems are required for individual residential units. 59. A rain gage system shall be installed in the Urban Separator. Location and make/model to be determined by the Water Resources and Conservation Department. 60. On-site storm drain utilities shall be privately owned and maintained. 61. A double -detector check valve shall be required to protect the public water supply from the private fire system. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 DRAFT FINDINGS FOR A PUD AMENDMENT TO WESTRIDGE UNITS 4 8,5 ATTACHMENT 1 DRAFT FINDINGS FOR PUD AMENDMENT Pinnacle Ridge Subdivision 2761 "I" Street APN 019-401- 019 Project File No. 05-ZOA-0029-CR FINDINGS FOR A PUD: 1. The proposed Amendment to Zoning Ordinance No. 1072 N.C.S., to amend the Planned Unit District to allow the Pinnacle Ridge property to develop as a residential development proposed is consistent with the Petaluma General Plan. The PUD Amendment will result in a more desirable use of land and a better physical environment than would be possible under any single zoning district or combination of zoning districts. The proposed I1 residences complies with the 2025 General Plan land use designation for the subject property which are: Urban Separator (6.32 acres), Rural Residential (8.15 acres) and Very Low Density Residential (1.89 acres). The Rural Residential (0.1 to 0.6 hu/ac) land use designation is intended for single-family residential development located primarily at the western perimeter of the city, along the Urban Growth Boundary. This designation maintains a rural character and provides a transition to unincorporated rural and agricultural lands. This density range reflects prevailing lot sizes and development patterns. The Very Low Density Residential (0.6-2.5 hu/ac) land use designation is intended for single-family residential development applied primarily to the southern hillsides, with a minimum lot size of half an acre, and larger lots required for sloped sites. The Urban Separator includes open space lands within and/or directly adjacent to the Urban Growth Boundary that are intended to serve as the outer boundary of urban development, as designated by the City of Petaluma. They provide an edge that buffers agricultural fields from urban land, may serve as a recreational area, and act as a key component of the city's open space system. On lands with development potential, the Urban Separator allows transferability of development potential to the remaining portion of the same property. Given the 2025 General Plan land use designations, and the allowance to transfer density from the Urban Separator, the subject property would be allowed to develop 11 units, which is what the applicant has proposed. 2. The proposal is consistent with the Zoning Ordinance in that it incorporates the policies and guidelines of the Planned Unit District Article 19. 3. The public necessity, convenience and general welfare clearly permit and will be furthered by the proposed amended PUD zoning in that the amended zoning designation will result in residential and office uses that are appropriate and compatible with the existing surrounding uses. The project plans present a unified and organized arrangement of lots and public streets, appropriate to adjacent and nearby properties. Proposed landscaping Page 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 would further ensure compatibility. The proposed project would also require review and approval Site Plan and Architectural Review Committee. 4. The requirements of the California Environmental Quality Act (CEQA) have been satisfied through the preparation of an Initial Study and the drafting of a Mitigated Negative Declaration to avoid or reduce to a level of insignificance potential for the following impacts were identified: geology/soils, hydrology/water, biological, visual quality and aesthetics. Mitigation measures have been proposed and agreed to by the applicant that will reduce potential impacts to less than significant. Based upon the Initial Study, a determination was made that no significant environmental impacts would result. 5. A copy of this notice was published in the Arcus Courier and provided to residents and occupants within 500 feet of the site, in compliance with CEQA requirements. Page 24 NARRATIVE FROM APPLICANT DATED 10/7/08 TO: CITY OF PETALUMA COMMUNITY DEVELOPMENT DEPARTMENT ATTENTION: MS. IRENE BORBA, SENIOR PLANNER DATE: 10/07/08 PROJECT: PINNACLE RIDGE, PETALUMA, CA SUBJECT: NARRATIVE FOR 10/28/08 PLANNING COMMISSION MEETING The following is a compilation of the items that we are providing as a result of the previous Planning Commission (PC) meeting of 09/09/08 during which members of the PC requested that we provide additional information: 1. Area Land Use and Density Map — The PC requested that we provide a larger area map which showed the land uses and densities of the surrounding properties both within the current City boundaries and properties designated to come into the City sometime in the future. 2. Site Sections — The PC requested that we provide cross-sections from various perspectives through the project which depicted the relationships between existing ground, finished grade, the street, and the proposed houses. We have had our project civil engineer, Stephen Lafranchi, prepare these cross-sections. 3. Additional Visual Analysis — The PC requested that we provide additional visual analysis of the proposed project from additional vantage points. However, since the project is not visible from any of the view platforms listed in the City's Hillside Protection Ordinance with the exception of the I Street gateway which we had previously shown the PC, we met with City Councilman David Rabbitt and Senior Planner Irene Borba, as instructed by the PC, to evaluate the potential neighborhood sites to use. After evaluation of the potential neighborhood vantage points, a total of seven (7) new visual simulations of the completed project were developed. These vantage points include the following: (1) from the highest point on the site looking back over the project towards the City; (2) from I Street at the intersection of Lot #9 and the Urban Separator which is further south on I Street than the original visual (as requested by the PC); (3) from Wallenberg Way (approximately at 14 Wallenberg Way) off Sunnyslope Rd.; (4) from I Street just north of Grevillia Dr.; (5) from about 188 Grevillia Dr. just east of Black Oak; (6) from about 342 Purrington Rd.; and (7) from the open space behind the King residence off Black Oak. 4. Enhanced Existing Visuals — We have provided, as requested from the PC, some enhanced visuals from our earlier presentation before the PC. These include the following: (1) inserting the trees proposed to be planted in the Private Open Space Easement at the rear of Lots #l, 2, and 3 in the visuals from Grevillia Dr.; (2) inserting trees along the Public Open Space at the rear of Lots 44, 5, and 6. 5. Private Conservation Easement at Lots #8 and 9 — The PC requested that we consider providing a private conservation easement at the rear of Lots # 8 and 9 to prevent any building in this area by future homeowners. We have agreed to do so and are providing this map showing the proposed conservation easement to further enhance the "rural look" along our property entering, or exiting, the City on I Street. 6. Additional Parking at Pump House on Lot #11— We are proposing to install two (2) parking stalls as well as a drinking fountain and a bench for those wishing to access the Urban Separator at the most southerly part of the property. 7. Urban Separator Access Path — As requested by the PC, we have had a conceptual design of a potential path within the Urban Separator which shows the cross section and alignment which would be expected. Unfortunately, due to the steep slope within the Urban Separator, a great deal of disfigurement to the existing terrain will be necessary to accommodate the path. 8. Supplemental Tree Preservation and Mitigation Report — We have also provided this report from the project arborist, Horticultural Associates, which indicates that a total of 12 additional trees will be impacted by the proposed development in accordance with the City's tree ordinance (Chapter 17). These trees were not identified in the previously submitted arborist report due to the fact that all of these additional trees are along the I Street frontage of the property, and the extent of impacts to those trees was unknown until the project conditions for improving I Street were better defined. -r . _ r_:: €:3:t- , r. 1:.<:.• . _ r,•::::: a . �:•, :._..: ; _ :.-'RESOLUTION 89-10 - UNIT DEVELOPMENT PLAN FOR WESTRIDGE UNITS 4 & 5 jiAli*•M1, �4at f.'. rt-`-- ~u ',..�'„S, n,.0��:y)f,rN7:✓.!•`• `:�r_. - "• � :.:n,-y:�tf,_^.., ��..;_{(_3 'ay`. y{.V:r:r,'%-' �`!pz=='y/`( -A{�. j��j(ryj y/•�!� f� _ , ✓4'!�} l�(C l.�:�..::i "�ii,":��i.�.lA�'±4�'t 11� {}�'�v�?T �.41� ,.I ••:,,-iNi{���ri{T���� .. - a�,:r �,,',�� .i ;� l-f,r'..4.:T•'2,+t'C ,y iy : -,,, t. '.:q�_,li' .u:.4:5 'ieGGG€`5^ 7ik"•iifh`Mt '.a:e7 >:1: - -».1' .. r_`u Nc•To�• „�,. wk:..�,-.�`;-�'-:ti'::t`�rk� r'�'- �' �'i_'�y s.:: .a-. "zc,.-. .:. c' �;."-'''1:$?°.+.:'' `=y_�"i: >.k�iJ ,�:2.:. .t.. �? `-:ii»,,e,;=_+.-_ _ .:i:..'`•�' _ ±;',j UTiOWA?PROVIN" -TitE,•CINITzIDEVELOPMBNT' PLAN 5.1?RQJCTr; LOCATED :.>- t.•..,.t3N'itil±.'N5 FiET, SO[1TB.0r:.WESII;IDG7 DRIVE. r ,• - and '0.14r401-02 1, ."gra--. e.~ }a�__ `� j.�.R .. _'.: .. L'.'y�`•�.•' .. -• -', ._. .... :.: ', .• �' .c WHE4EAS; by`ac-tion, taken on November 22,':1988, .the Plan ning'Commission -- -- eccpinend'ed:;`conditional=.'approyal.'.of': tte_;:t?nit ,Development Plan for the _. xtevcl"optn�nt of a 167 16 ;at gleefamily' residen:tial subdivision. ;:,kI£] z1-T'-F.7RTHE tNREkiV..EA;'tliat' the ' GIf' C`3uncil.:hereby adopts the 'fi Gpin�1issia',n'-a ?its:ri.din ary. as se#I=out hereinafter: WN - Vii;�;lan:'ciearl-':i'Esults in 'a more .desirable use of t ts=.-;:,;•4.;,:-:`r"-'"'-'7ajti};environifient thatwould be pos3ible under ; cc ;_� _ __,,�:,j:V, _�?�:�sY,gj�;Qi.;�Y�1lfj,g.•� "t:?,,4,_ z;; mliinatiosr .of 'zoning districts, 'ia'.;'„-: .Y ;,'1{_g k,.: .�yc•�; v: J- n�:rf:�;; �, .,,.-;._a.v �i..�,'�;....xi, � �• i `[mak `a;;t'^.�:' ”:^5=:? `:_ :•W?�a'�i'St,S y%�',t+��:,�yo,,'y�:,i'""•�+Zi.S'v: �.. _ :�� . '4."irxr': h r .=%7r(�":irTYz fly .s r• I i t `tiy`-s�r�. rp e'4y' }vhiihl' has.. the ability- to provide a stri°bi'a�S??itij4lrit ;1%Prouglij5rc :(1'Strcctj';.': and'.. that said j iditil tsziio'=ca'rr.r art ' additiaiial::ti•affic generated o-v?j1iti:-1?c�;::cohi'plcliori' of. the' improvements to be ; trY✓}i-_-`•vnr':. t:.. ' y.Sr-,.�.'Wi -T a :. r ler °l s: s T Gf$'leilY.z h l Lleralroject, hpsed on .the •traffic _:' t 4yals�ts :• -1 l nl•.. i . $3 ti `._.,'. y1 't'"..: dirw.;thp �'pYop4s �i�:';4,gve7opment .will 'present .a'.',unifled .and rkin g' vont+:aC bul?dings :,and service' ,frcilitiea _whichare. io ria�ta''its 'relatlaa • ta'�ad ar:ent' or nearby o Rt? P Y Crerties and that . P at(e:gtate ,landscnpirig andlor :screening will be. included :to insure itilsilSty b-y,the 'preservatior, of sensitive hillside areas, 'restriction Ilding -1ocafSons and., incorporation of substantial public and private caping_iiito;.the,d v.elopmerit plan..- j?atural` and'; scenic" qualit es= of the site will be. protected, with ,atg;'Ava'italil6i;` ublic`dnd-",privatc. :spaces; designated on the Unit gninonf ,Plait`,:thiough. tlie''dedica}icn of park land to the City and rlaan'Sci'aratQr:.an'd:ahloii'ph'the''desl naUon.of "non -development's lib'ove.''identi'ticd;'contour-llnes-to insure perpetual preservation of critical' �ratural::qualities: of trio;,; site. . tit of. -the-subjer.t',p"roperty., in the manner proposed by id- conditionaiiy-approved,.'will not be 'detrimental to the will be'iii.-the-bcsb: interests ,of the City and will be in t©; generai-.,intent':end spirit of tho`"zoning regulation of fatuma: a»d with 'the.`=Pstalutria General Plan adopted by .�:_: _ '.'(: •.;-JF., ac ,t-: ..:r::_.-X,.- Yt2 G,� �ixrt�'..�.�"".�?li r'tli:.{:.a?,.:si::n?:t�x . ;r1:::u1< _ _=:`. �`.'i!:- -%'" b+ .yv cr. units..as :Custom 'kiomes (elevations 'not i;,tha''pYojDoi te#e'the;inteidof ttieGeneral Plan* policy, t t1if1 larine 1i+' hi#itra2 unit: ,developrrients:'significantly atec ;FU•RiHl lt:' =1tES0i.YED`:'= th'a.Y; E'heGitg' :Coutt61 finds that the r :r=eguireiaeil'to<:of a}i1min. Erivirorisnen#ai;.Quaii#y Act. Guidelines. have _- y ti .. iiee `mei: atixt' hereisy': iiC8Tporate0, by' rafereace; Ylie"._E1R," certified, approved " '='; :yan,adated by'the.City'=Coiznci!' in'Deceinber: 198,8: "-RESOi,YED that the City- Council hereby approves the U�,yest?idjle;,Units.'Q.>ndf5__xxnit',develop ment.plan `submitted :to the City on ??e1? ? ' K,i'I u ject' :to' 'th'e -:c'ondition's of approval set out ss -'_._ �'a7,`ti:i`.a'''•',- - �-g�?1;;,� liec��)?u?i? � 'iq�'Itii�, i3asFt,� pzaP�x#Y ,;i,1G.5 acres, of AP-�;No. D1.9=441=42)' _ :3 C sFtali _"ie r s7jt P6'D With th_e; 'following developmentloperating '� stat7ddrEtis r lk 19 .r - .: .: jt5'r,a t3peratjcJiir-;'and. uses: ire: consistent With the a.nW �jnvo ??;aj'; c nliiiu•c_ at cue'eent_ levels,- 1F',k.•"`-_: ``'• f$�vf .-.F"t ;µi:-"t-i,' '2'r-@:'"''-^, .. �q.� _ ,.:-=.. .: ..,; .' �t with.: the Petaluma Vi5;;Ze4ltuia1 District;.-0u1. il ti. ;gin " •-7?'- _ oils"; il s':�j{s.;6r`.'iii�r�ases"iri;the ]ever of devalopment' inusl.l]e 8c3olopnxciit pIazi shall bo-- amended prior' to SPARC redxativ p"roglde':for a maximum of 167, lots. and to ta; and': 6c't the. fallowing � • . . <_. ; ; = .°.:aa`,:' •jatq'eatePho.tlni' Place '.tb., be adjanent to Thompson Crack, r �...a.,, ..:>..,. +.#hereb'y eliminating lots -'-,through 177 as designed. The Intent is tb'.reducc"the scale of proposed cut and fill thi*kzmendment': ori€ the�iior-fh'sic7e. of Photinia: Place ..as proposed, improve security z. _, yt:•_.; ,c-::and,:.v';{nfbillty to;`;alas; bpep'c rea':and pxov:de. area for. maintenance aedes s;'alon'g:.ThbmpA6x':'Creek ' 7';Roc6nfi ure loth �:1&`1..throu h 171- to -widen loth;-thdY eby providing '.+.-aicie':';'.yard, areas [oY:;"%,Rutdoor/open space activities and im ' ovements and::to reduce the need 'for significant cut and fill, -. .. ..:i•':, CSX.,....._. -:_=";.' Reconfiguraii'on;shall include provision of. a minimum of 100 !n '5`-Y.: `:'' wi'�1L'.If',;of: urUan .separator to :'.connect. proposed non-development areds: alon{{ ;west.: prbjeet. boundary. '. - k 1t&gdrifi'$ure:i6ta 153`=thrbugh 160,::reducing'by -2 lots, to eliminate —.., - �-.j-:`FtiCed'i far.`, bridging'.ftood. cofitYoT. ,.eaaemant. Access shall be o6tairi8d. from'Oreviilin 89-.10 N, .0.: V A % d A`410i '.,:'rec6nift,guri:-'surroundihg lots to absorb I through145 j-- 170ducln'g by one,Aot,�to provide a to'_azid' uieabl�:�,Ibuffdln'g j, pad excluding 7pinep.are t a'boiInda*ry to -abut rear lot lines of 6 ,4. upawnt easement." no structures, solid -fences -4 ntlscsping)= bkweeh: the: 200 foot.,contour and the sevelopment area line to allow the in' -private ownership,'b,'Ot prohibit development of I* 'd; an tdaping that would .modify the more visually :sensitive.. hillside ;a`64. . E ceptions; Lot at r x i 'ktas& Drive' -(iden#fled'-.as, Lot #145 on tentative W dwellirij-,for- �,hich: the ground level rUg -4 -.single: . . . . . . ..... . new vailonsAall �'rfot, -225 foot -%contour- line, "fdr each lot, c t a n of."OiL playing iqn 14 'parking) 'shall' be subject sic, .-Parks. ancl. Recreation L of -the o e projuc t 15-:1 f): frern: four . to two if .4iory. homes, s, ict' to'. four one - a "d-, Is' 'tb k' Nyq, in nts!"shall tis: ncorporaled into P -t k tic by apliroved residential fire 7 -Ing -shill have' approved fire retardant roof covering Hals(no' -wood'' shakes, per Ordinance No. 1744 recently - adopted by )y Council, 11 D-: d uv LI op men t ;plan .narrative, as. presented by the developer, be revised to rcncct-all -:fa6t5,of thqi project as amended by the ao"pted 'conditions- of - ai-civalj -sub)cct-,*_to- review and approval 13), City staff:,.; Narniii�,e_ sbzill''A'ddreas the, r6q6IrcI7%(!nt- that; all r construction, -d - dI - tl 6ns r6mo . delin m I ust t,) -e u n de r t a k e n and eompleted in 6ijfoi:ms6ce j iih; the adont qd deycl �opmL - standards. P _aPqi� cfevelop'mcnt standards and project CC&Rs (conditions, 3: an=ti :re-strictibbs) i- subject to staff review and approval, A fi-al I rriAbi d c6renees.regarding,:` approved ' development standards co megonditio'na, of preioning approval, hicludingt 'W helghts,: 'measured from natural grade, as lots_� not '.Wentifie d i� as custom homes on the d'. map, p sh'all'�%be :.two-* and - one-half stories or in-. hom es -subject -:to-* SP%RC review and analysis . 1 .1. and needs -to tfi�sure compatibility with adjacent Makiffium lot coviraje' -for princ.ipal -and- accessory, buildings shall bi�'Jlimftcid to, an: -area :44uIvaleh1_to- the; defined building envelope on ;',rise :,approved : -unit. - development plan, These _asr. a, own th envelopes*.'shall -7also, be. shokii-Qn. Jth`e`-"t6ntatIve' and final maps. � I.. ... . - - . i , lie area within the setbacks �'Building -env6lbpO' shall,ba defined ag..t as re qu Ire d elow." -.S I . acks , :s . a as follows: ;SeI. h 11e -(I) A I ff,,:16 fs, having a gross square footage of less than 10,000 't- .-,a 0 CQ w R-1, 6, 500 sqAr�l:.q., cc rdan 7'ith square foot -k -q e t Lots.B� 9; 10, and 11 which shall have exc p a.-?-nJJrJJn)um .-roar 'yard setback of 30') [unless amended by Lo it jousq-Ji a;'- gross. square footage of at least 10,000 , aving q MLie t' -b u t, I s's thaii : 20, 000 square feet; in accordance . -:JWJ,0�',000. square foot requirements. ir 'f gL. of 20,000 square feet f...e-setbAck provisions of the -?0.,0 0..Zorilrig district, X structures, including accessory u.4 n or6i to the app -ovud I 6nit iii. , ccVgs r Aricl6ding accessory dwellings, *OT of the Zoning Ordinance for -4 H)a Y.TrP1_ttC - :ccasory nd the,provislons contained therein. 4ML)V)1Cf arage conversions and minor additions (ducks, patios, etc.) are a;J 2-( ,rinitted An. conformance with zoning ordinance regulations. C;, L;)• xn& 'o . ccupations are -permitted subject to the regulations of the -tA uqi�; Z4ning';-.6rdinance.'. ao_}ijbjtibn and. nonrnative landscaping )6vb`_th`e 200 cot. con to liric (exc6p!toni Act at terminus of ickrosc Drlvc; a . a- stated In Condition Ih above) DavLlopmcnt afidaMs ' -shall'-! provide .'a . -list of appropriate non-native n6ca'p.fhg species for planting above the 200 foot contour line. 4HA 6T tho.-proposed dovolooment plan arc, subject to review by do.-Phth and-Ar*&hitdct6raI llovic!w Committee prior to approval of �Gpi_ `inclu�dlrig' but' -not limited, : tot architecture, public ;111LI landscaping ' (excp 't par.k)p Ierlgatlon and fencing. '4 R000; d: PrI iii. , ccVgs r Aricl6ding accessory dwellings, *OT of the Zoning Ordinance for -4 H)a Y.TrP1_ttC - :ccasory nd the,provislons contained therein. 4ML)V)1Cf arage conversions and minor additions (ducks, patios, etc.) are a;J 2-( ,rinitted An. conformance with zoning ordinance regulations. C;, L;)• xn& 'o . ccupations are -permitted subject to the regulations of the -tA uqi�; Z4ning';-.6rdinance.'. ao_}ijbjtibn and. nonrnative landscaping )6vb`_th`e 200 cot. con to liric (exc6p!toni Act at terminus of ickrosc Drlvc; a . a- stated In Condition Ih above) DavLlopmcnt afidaMs ' -shall'-! provide .'a . -list of appropriate non-native n6ca'p.fhg species for planting above the 200 foot contour line. 4HA 6T tho.-proposed dovolooment plan arc, subject to review by do.-Phth and-Ar*&hitdct6raI llovic!w Committee prior to approval of �Gpi_ `inclu�dlrig' but' -not limited, : tot architecture, public ;111LI landscaping ' (excp 't par.k)p Ierlgatlon and fencing. '4 R000; d: rear, yards (including side 0�5,:: e ce open field fencing may be U:reaff for.;. homesJo 'the south- of Grevillia :>-provided,. along -project's outer. ky I A It e'r ts property and/or a 'Uts_ajacen. Ir erties, subject to SPARC an a 0 type., field:, faricin9 shall. e .'iris"tail'ed along project's outer tyJfft6s in'sl de' porimete C;f:u separator, areas, and in of -,T'h'& p r'6'p' q s e d non -de lopm -area (above the 200 foot r: of existingfencing shall be subject to aild • approval s -:.'. to need, .,of, repair or tYO: With _Snizbd .development. _T . a 6 '_desi'g'ned,' 'subject "to SPARC review and Howin W4-A :canopy trep4-,,and.:tree, clusters into project rt cu arly,-. arge canopy trees along. project Ag -34) soften the visual impact of the project ruibxrn I 41qdrviOwp6jMs-. (FEIR, Y y. pg q&f.-t1rips.,- i.ad con�rnwLi;ar6a aEljaccnt "-'at.-corner 'Of _0' property lines lotJ1104 and q I 4wacin %Y, all. be provided I)ciwc6n side YArGrace Idcw, Ik-i Dedication" Of additional -c as, irto' "provide area for �T, —,M- d- I :subject ject to 'staff review and Z., Won* of qreek" channel, planting plan within the boundarlen of. -,;proposed. development.._The intent Is to move toward fqblishment of--a'natuial riparian, habitat without adversely n term water, ow The. .proposed plan shall be subject by .*,_ -'al) appi dpriate -reglulatory agencies and an I lihod w n t_ an;' YOIO� - ya- q4a Ildlife/riparlan habitat ''t 'A T 'lie a lublic hiput 4s I pylon -to' t9P RO,."rev lew. , -t There shall. :> r c 'R c ding.moil icat .-of interested parsons as part of the land preparation', The cost of hall-.- be borne by �'i v endent. .'.apa 6 a 5 the' a developer, %1select] of*: the 6slonal ,phall lie subject to review and 11 0 staff.,' The., plantinplan shall Include s3Lciffe review and approvalof 'City stiff,. to maintain I planting for -,a' broak-in period of three years •�oriaritii. conilsleflon oc residential junit. construction, whichever Sr, 17� n. the 'PUD': development -plan rear, yards (including side 0�5,:: e ce open field fencing may be U:reaff for.;. homesJo 'the south- of Grevillia :>-provided,. along -project's outer. ky I A It e'r ts property and/or a 'Uts_ajacen. Ir erties, subject to SPARC an a 0 type., field:, faricin9 shall. e .'iris"tail'ed along project's outer tyJfft6s in'sl de' porimete C;f:u separator, areas, and in of -,T'h'& p r'6'p' q s e d non -de lopm -area (above the 200 foot r: of existingfencing shall be subject to aild • approval s -:.'. to need, .,of, repair or tYO: With _Snizbd .development. _T . a 6 '_desi'g'ned,' 'subject "to SPARC review and Howin W4-A :canopy trep4-,,and.:tree, clusters into project rt cu arly,-. arge canopy trees along. project Ag -34) soften the visual impact of the project ruibxrn I 41qdrviOwp6jMs-. (FEIR, Y y. pg q&f.-t1rips.,- i.ad con�rnwLi;ar6a aEljaccnt "-'at.-corner 'Of _0' property lines lotJ1104 and q I 4wacin %Y, all. be provided I)ciwc6n side YArGrace Idcw, Ik-i Dedication" Of additional -c as, irto' "provide area for �T, —,M- d- I :subject ject to 'staff review and Z., Won* of qreek" channel, planting plan within the boundarlen of. -,;proposed. development.._The intent Is to move toward fqblishment of--a'natuial riparian, habitat without adversely n term water, ow The. .proposed plan shall be subject by .*,_ -'al) appi dpriate -reglulatory agencies and an I lihod w n t_ an;' YOIO� - ya- q4a Ildlife/riparlan habitat ''t 'A T 'lie a lublic hiput 4s I pylon -to' t9P RO,."rev lew. , -t There shall. :> r c 'R c ding.moil icat .-of interested parsons as part of the land preparation', The cost of hall-.- be borne by �'i v endent. .'.apa 6 a 5 the' a developer, %1select] of*: the 6slonal ,phall lie subject to review and 11 0 staff.,' The., plantinplan shall Include s3Lciffe review and approvalof 'City stiff,. to maintain I planting for -,a' broak-in period of three years •�oriaritii. conilsleflon oc residential junit. construction, whichever Sr, ------------------ andscbip6;: es4mon- Lind shall' be ee year break-in &rVocfJisso4i'At ed -cortS formation. of_.fAqsessment' Distric ! t ceniot 6m6 t" 6 g Jho.,plithtlng' of 85 CO rl A4U** tree per Z lots within tappseii;project},;' along existing Chi 1,,s ale in Wast.rldgeUnits 6 hetIc' and natural s of the riginab creek'a- des ' ta sh more. visual, continuity' between the 0 . su ' i Isic::phases '(FEIRpg,.. A42).. Planting* plan shall be ibjeci .I.r6view -.and E. 6ppro .'appropriate regulatory, gencies,'. shall be undcrtak@fi_t'a6d :compldted prior to dertiflcai6 of: occupancy for, new units, ieasurcs' an& planting plan for revegethtion of cut.and fill slopes, Idsca I' .-'H_ggtibn systcrns in� the Public - R -07W, in common ','.'-"dctentl6ii"'areas, street'',trees and be- maintained through all: ,-d"Ijndd to standards, acceptable , to q,�ope f�WdA)y •tune -controlled devices ing non daylight; hours'.7' '..Assessillent -0 approved ved- 6,� y"_'. the, City, costs. to, be borne D Map approval. il,it irs na shall be % 0 a I s I i -, a i . V 1) e fully.' screened; subjoct to T, clop .614,,.Department, t I Police dell;artmunt 0 te, t t a development- }flan; lis 3fhC`:,p1.Qvsl4n'.4f'Ilghted house nu-nibers) z? i.d -and Aeslg6cd: in m�ravd 'e** planned ne ation Department and the "?Atisfc, an Par oz- o , itoh Parkimprovements shall be ,by . eveloper pr . ior-to' letion of 50% of Phase I units, Be su�mltted-to the State Department of Fish and roview- t)f,**its interface with planned creek improvements, vjew-b�:z - f - he Rccnatlofi,hI,visIc and Parks Commission. ting: _,:operating`; -pihelcer' shall', bd, complied with during on �h I? n:. pilvity, e "-'�P.-cofistrutfliin. activity: on the - WeAtrldgb Units 4 and 5 b- -.1i'mited gt_4 ANi to 6, PM, Monday through st , rticti6ij 6quipment - powered , by _ Internal combustion proporly muffled- and. maintained to . minimize U n h - a all be Aurned off when not In use, 6 4, 14�1 �N -0411- bAD-,-c'o :oi ntr1ol hilr: 6..Sc edu'led -foi:Jhv e wherf:,wind: velocities 'are- low All 'storage JT ..b.ut =n6t --- limited. to fill, re AF�IR').""Pg; - 20 f. pr6posdd:, bri ' ; son-. reek and: control bi:i�bjedt-Api6viW Df* -Sonoma County gency, ity 'a aff:' And, any --appropriate' regulatory agencies prior to-:FinalMip.ipprcival Asigns': qy-'Orectcd-josadvertlsp5br 'direct. 'persons to the project shall W - the -019b," ordinance and ob,tabn a sign r om rbe , it "shallbereq'uIred to -�Oay low anA moderate Income �-N--J�-'-hcLx1s1pA:- hi:-Ifdu' * :66i 'of, an amount - to bo"determined according to the u l4d I !d o' i4a'blishment by City,*- Council Resolution No, 84-199 N. C, S E sjur6,at!v6 air4ng`,unents to meet.: -the low and moderate income ror thi reqi --- 1 !me�ts_ k-taluma : General Plan, subject a �iap. �pprov 4�, 1-W execute �.a -binding': agreement which: shall pli , I _poy� ,g ' h ' al "'eaib.'rdsidential;:.d�A,elling:piiit in 0— �L6 pu 4 o 'escrow* 'o t'IVR -.0 tif 4 - -a I I. CT -, 5 1 pay -a traffic* impact fee of a ly `trip "end estimated td*bc-, . gencratcd by dai 04 h generate - 10.0 trip, ends per day, .4 gq Fdclli'. JOB Traffic Mitigation' Fee. prior to ?s'"`5, 'N , Jjj�i, lot t 4 for said, unit (S) . dnd all BIR Jpra li,er(jifterz.will,.ba':;eitipr $150;00 PC] - !N cqJUtnQ_, '. - 4--mitilgationi is J A_t 4 f f id, z�s p 1�0 a I Oil" -rOH" -1 lc�Yr_ ncdu tp'ted'�' uilng -pl d - ail ata_fhb� I Ind EV: or around the I&ntified,'midden _ de field supcM'dicn . of a lr6ct via efi,,�u fe, iaebloglst-, -Wno�' a,h" 1-: a a t 6 authority to stop ' work, C u 's eastires: p'e6s r1bed by the archaeologist and required by un ortaken' prior to 1t', -:.;Ghali a d resumption of contiLruction lfi&l t a area, nder L war and authority mnfarrod upon thin Caurgl �6Y & Charter of an1d -P he y cortify.U14 foioqoint RoWation was Intry md and odoptod by, U10 A Mas to Cie s (9 '3unfliblibb Oltyal Patal-Unta at a:(IRAgular) (Adl6umod) (KPW) MDOUng t ....... by tho .................. ._7 Ity Attornoy lqh4WP,Vic6 'Mayor DhV[o,.May6r.l1111go9s .W ........... Mayor