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34416
28 IE 3 /-4 /-4 � "1-6 IN THE CITY OF LA- QUINTA, CALIFORNIA , r PRELIMINARY HYDROLOGY, REPORT ARNOLD PALMER OFFICE BUILDINGS. _ TENTATIVE TRACT, MAP 34416 IN THE SW 1/4 OF SECTION 6, TISS, R7E, SBM ,4, Z - 3 CALLS TAMPICO m � J O V W SITE ` 3 cn 2 W x Z o0 W V) J W 5 VICINITY MAP ESSI SHAHANDEH. Planning —Civil CIVIL ENGINEER Engineering — Structural PALM ALM DESERT 45 -175 Panorama Drive, Suite V, Palm Desert CA. 92260 Phone: (760) 340 -5597 • FAX: (760) 340 -1121 QROFESS /pN pR Sygyq! Fy cu No. 47834 = m Uj a PREPARED UNDER THE Exp. 12/31/07 DIRECT SUPERVISION OF: DATE `Sl CIO- OF CA_,F ESSI SHAHANDEH - RCE 47834 - EXPIRES 12 -31 -07 i Essi Shahandeh, Civil Engineer .45175 Panorama Dr. Suite E Telephone (760) 3405597 Palm Desert, CA 92260 Fax (760) 340 -1121 TRANSMITTAL Date: April 3, 2006 Job No: 103.00 To: City of La Quinta Public Works Depatment Attn: Mr. Andrew Mogensen RE: Arnolds Palmer Office Buildings Enclosed: Four copies of the Preliminary Precise Grading Plan. Four copies of Hydrology / Hydraulic Report. For: Your use /Approval. Remarks: Sincerely, Essi Shahandeh, P.E. PRELIMINARY HYDROLOGY STUDY FOR TENTATIVE TRACT 34416 IN THE SOUTHWEST ONE QUARTER OF SECTION 6, TOWNSHIP 6 SOUTH, RANGE 7 EAST, SAN BERNARDINO MERIDIAN ' THE ARNOLD PALMER OFFICE COMPLEX ' SITE LOCATION: THE NORTHEAST CORNER OF THE INTERSECTION OF DESERT CLUB DRIVE AND AVENUE 52. ADJACENT TO THE ARNOLD PALMER RESTAURANT IN LA QUINTA, CALIFORNIA ' THOMAS BROS GUIDE REFERENCE: PAGE 849 GRID F7 2006 EDITION GPS COORDINATE: 33.67347° N 116.30206° W RAINFALL DATA SOURCE: NOAA, NATIONAL WEATHER SERVICE, ATLAS 14 COMPUTER GENERATED FROM THEIR WEBSITE THE SITE LIES IN AN AREA NOT SHOWN IN THE ISOHYETAL CHARTS FOR THE STORM EVENTS IN THE RIVERSIDE COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT HYDROLOGY MANUAL. THESE RCFCWCD CHARTS WERE DERIVED FROM THE ORIGINAL NOAA ATLAS 14 CHARTS AND WERE NOT EXTENDED TO THE EASTERN PARTS OF-THE COACHELLA VALLEY, PRESUMABLY THINKING THAT WHEN THIS AREA WOULD DEVELOP, A NEW MANUAL WOULD BE IN PLACE. NO UPDATE IS PLANNED AND THE DATA FOR THIS STUDY IS DERIVED DIRECTLY FROM THE NOAA WEBSITE BASED ON THE ORIGINAL ATLAS 14 CHART. THE SITE IS LOCATED AT http: / /hdsc.nws.noaa.gov /hdsc /pfds /sa /sca pfds.html . INFORMATION ON THE STORM DATA IS BASED UPON GEOGRAPHIC LONGITUDE AND LATITUDE. THIS CHART IS INCLUDED IN THE STUDY AND IS CONSISTENTLY REPRODUCIBLE. SITE DESCRIPTION: ' THE SITE IS CURRENTLY UTILIZED AS A LAKE FEATURE. THE ORIGINAL HYDROLOGY STUDY FOR THE ARNOLD PALMER RESTAURANT WAS PREPARED BY THE KEITH COMPANIES UNDER LOT 90 OF TRACT 28470 -1 DATED OCTOBER 6, 2000. THIS ANALYSIS WAS FOR THE ENTRY ROAD ON THE NORTH OF THIS SITE TO DESERT CLUB DRIVE AND THE PARKING LOT / RESTAURANT SITE NORTHEASTERLY OF THIS SITE. THE LAKE EXISTING ON THE SITE WAS NOT TO BE USED FOR ANY STORAGE CAPACITY. ITS REMOVAL THEN DOES NOT AFFECT THE ADJACENT SITE ABILITY TO STORE ITS STORM WATER. TWO ABOVE GROUND BASINS WILL BE PROVIDED AS WELL AS UNDERGROUND STORAGE FACILITIES. THE TWO BASIN WILL BE A MAXIMUM DEPTH OF TWO FEET. THE UNDERGROUND FACILITY CONSISTS OF 18 PRECAST CONCRETE "STORM TRAP" UNITS PROVIDING A CAPACITY OF 4127.8 CUBIC FEET OF STORAGE. STORM WATER IN THE PARKING AREA WILL BE COLLECTED IN A CATCH BASIN LOCATED IN THE WEST END OF THE PARKING LOT AND CONVEYED VIA PIPE TO THE WEST RETENTION BASIN. THERE IT WILL ENTER THE MAXWELL ' AND ENTER INTO THE UNDERGROUND STORAGE UNITS. C. XPROJECTSWMG2006 \06001\HYDROLOGY\06001 HYDRO TR34416. d STUDY PURPOSE: PROVE THAT THERE IS ADEQUATE STORAGE ON SITE FOR THE 3 HOUR, 6 HOUR AND 24 HOUR 100 YEAR STORM EVENT. PROVE THE FUNCTION OF THE PROPOSED SYSTEM. ANALYSIS DETAILS: WHILE THE SITE IS NOT SHOWN WITH 90% COVERAGE, WE SHOW THAT THE STORAGE SUPPLIED IS ADEQUATE TO ACCOMMODATE FULL STORAGE UNDER THOSE CONDITIONS. THIS PROVIDES FOR ANY ADDITIONAL HARDSCAPES THAT MAY BE INSTALLED AT FUTURE DATES. THE SOIL TYPE USED FOR THIS ANALYSIS IS TYPE "B ". THE SOILS IN DOWNTOWN LA QUINTA ARE OF A SEDIMENTARY TYPE AND CONSIST OF CLAYS AND SILTS FROM THE ANCIENT LAKE BED AS WELL AS SILTS FROM THE COVE ALLUVIAL FAN TO THE SOUTH. AN INFILTRATION RATE OF 0.5" PER HOUR IS USED AND IS CONSISTENT WITH THE PREVIOUSLY APPROVED STUDY DONE FOR THE RESTAURANT. THE STUDY REFLECTS THE USE OF THE STORM TRAP UNDERGROUND STORM WATER RETENTION SYSTEM. WATERS FROM THE PARKING LOT ARE CONVEYED VIA A RIBBON GUTTER TO CATCH BASIN NO. 1. THE AREAS OUTSIDE THE PARKING LOT (ROOFS, SIDEWALKS, ETC) WILL DRAIN DIRECTLY INTO THE OPEN RETENTION BASINS. AN EQUALIZER LINE CONNECTS THE TWO RETENTION BASINS. THE PIPE FROM CATCH BASIN NO. 1 DRAINS DIRECTLY TO A MAXWELL STRUCTURE AND INTO THE UNDERGROUND STORAGE THROUGH A 12" PVC PIPE. THE STORM TRAP IS AN OPEN CHAMBERED SYSTEM SLOWLY FILLING EVENLY ACROSS THE BOTTOM OF THE COMPLEX. NO PERCOLATION RATE WAS USED IN THE CHAMBER SYSTEM. VOLUMES SHOW THAT THE 3 HOUR AND 6 HOUR 100 YEAR STORMS ARE COMPLETELY STORED IN THE UNDERGROUND SYSTEM. THE 24 HOUR HUNDRED YEAR STORM IS PARTIALLY HELD UNDERGROUND UNTIL NEAR THE 41ST 15 MINUTE PERIOD. THE SYSTEM THEN WILL BACKUP INTO THE OPEN BASINS. IN THE PRIOR PERIODS TO OVERFLOW THE ENTIRE RUNOFF IS DIVERTED TO THE UNDERGROUND STORAGE AND IS ACCOUNTED FOR IN THE ADDITIONAL LOSSES COLUMN. THE MAXIMUM PONDING DEPTH OF 1.93 FEET IS REACHED IN THE OPEN RETENTION BASINS AT PERIOD 64 FOR THE 15 MINUTE ANALYSIS. CONCLUSIONS: THE DESIGN AS SHOWN IN THIS ANALYSIS SHOWS THAT ADEQUATE STORAGE FOR THE PROJECT IS PROVIDED. THE USE OF THE 90% COVERAGE WILL YIELD A CONSERVATIVE FIGURE FOR THE RUNOFF CALCULATIONS, INSURING THAT ANY CHANGES THAT MIGHT OCCUR AT A LATER DATE WILL NOT TAX THE SYSTEM. OVERFLOW IS ACHIEVED THROUGH THE ENTRY DRIVE AT THE NORTHWEST CORNER OF THE SITE ONTO DESERT CLUB DRIVE. C:\PROJECTSV1MG2006 \06001\HYDROLOGY\06001_HYDRO TR34416.wpd [��r 1 • J yq/y'_{ 44 mrd olf M .0 colo *eoq. A, .... ..... . �.'J r17 in. CiF W�' 114, 1 ?.Tk, '.M"Ii Mr Wim m t7 _kC :oi ............... il ......... L", oi s5 t"4 Ea f lip" , IN la m 4 jaw "! IF, fl 7. Q ' \. p ME . <: ,lI �Y,,,���Yi" 3>•�,�� �.: ,:<' "C•, n !" ,_;. x;4:25: .i _.:^i -.._ s.'... ';`'+.'f - - - -' - - - - - " - - r. -._- - •-.•`\ - c�- "- �',�'. �•�- !� �: 'a TrT • bgYrb 4b ` -„i _.! -/ v- �[p'va, ! 2�„� i � €• � �' � .:J' ; , 1 � .. ':�� � ' n- � T .5� o l • •�` X. ,+� Ap r,1 0... 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L,_.� _ — �C�1f�' —��_ — ��i _•p /.__� -�. ;f ^.'��_ —t0._ ..., n .:I O.�y ,:.�,_ o..., „1_ Y•: -L ".�;:.��, :aN�:' ':G:. ”{ O y.w,. e, e'en['• HI' ^•'.� Y . ♦.\ ' \ _ _ ; rJp • � S MDIN(�'. ` �iaul,�lE� a {.: ', ' _ .,, I . �:' z ` ; r m v N 0 In n: m �A C) D n v D z C) M c z _U D D p D D O z RAINFALL INTENSITY - INCHES PER HOUR 6.76 6 3.73 6.08 CATHEDRAL CITY CHERRY VALLEY CORONA I DESERT HOT SPRINGS I ELSINORE - WILD04AR DURATION MINUTES FREQUENCY 10 100 YEAR YEAR 5 4.14 6.76 6 3.73 6.08 7 3.41 556 8 3.15 5..15 9 2.95 4.81 10 2.77 4.52 11 2.62 4.28 12 2.49 4.07 13 2.38 3.88. 14 2.28 3.72 15 2.19 3.58 16 2.11 3.44 17 2.04 3.32 18 1.97 3.22 19 1.91 3.12 20 1.85 3.03 22 1.75 2.86 24 1.67 2.72 26 1.59 2.60 28 1.52 2.49 30 1.46 2.39 32 1.41 2.30 34 1.36 2.22 36 1.32 2.15 38 1.28 2.09 40 1.24 2.02 45 1.16 1.89 50 1.09 1.78 55 1.03 168 60 .98 1..60 - - 65 -_.. -- -'94 _..1..53 .- . 70 .90 1.46. 75 .86 1.41 80 .83 1.35 85 .80 1.31 SLOPE = .580 DURATION FREQUENCY MINUTES 3.23 4.94 6 10 100 7 YEAR YEAR 5 3.65 5.49 6 3.30 4.97 7 3.03 4.56 8 2.82 4.24 9 2.64 3.97 10 2.49 3.75 11 2.36 3.56 12 2.25 3.39 13 2.16 3.25 14 2.07 3.12 15 1.99 3.00 16 1.92 2.90 17 1.86 2.80 18 1.80 2.71 19 1.75 2.64 20 1.70 2.56 22 1.61 2.43 24 1.54 2.32 26 1.47 ?.22 28 1.41 2.13 30 1.36 2.05 32 1.31 1.98 34 1.27 1.91 36 1.23 1.85 38 1.20 1.80 40 1.16 1.75 45 1.09 1.64 50 1.03 1.55 55 .99 1.47 60 .93 1.40 -65. _ .89 1.14 70 .85 _ 1.29 75 .82 1.24 80 .79 1.20 85 .77 1.16 SLOPE = .550 DURATION MINUTES 5 6 7 8 9 10 I1 12 13 14 IS 16 17 18 19 20 22 24 26 28 30 32 34 36 38 40 45 50 55 60 65 70 75 80 85 FREQUENCY 10 100 YEAR YEAR 3.10 4.78 2.84 4.38 2.64 4.07 2.47 3.81 2.34 3.60 2.22 3.43 2.12 3.27 2.04 3.14 1.96 3.02 1.89 2.92 1.83 2.82 1.77 2.73 1.72 2.66 1.68 2.58 1.63 2.52 1.59 2.46 1.52 2.35 1.46 2.25 1.40 2.17 1.36 2.09 1.31 2.02 1.27 1.96 1.23 1.90 1.20 1.85 1.17 1.81 1.14 1.76 1.08 1.66 1.03 1.58 .98 1.51 .94 1.45 .90 1.40 .87 j.35 - .84 1.30 .82 1.26 .80 1.23 DURATION FREQUENCY MINUTES 3.23 4.94 6 10 100 7 YEAR YEAR 5 4.39 6.76 6 3.95 6.08 7 3.62 5.56 8 3.35 5.15 9 3.13 4.81 10 2.94 4.52 11 2.78 4.28 12 2.65 4.07 13 2.53 3.88 14 2.42 3.72 15 2.32 3.58 16 2.24 3.44 17 2.16 3.32 18 2.09 3.22 19 2.03 3.12 20 1.97 3.03 22 1.86 2.86 24 1.77 2.72 26 1.69 2.60 28 1.62 2.49 30 1.55 2.39 32 1.50 2.30 34 1.45 2.22 36 1.40 2.15 38 1.36 2.09 40 1.32 2.02 45 1.23 1.89 50 1.16 1.78 55 1.09 1.68 60 1.04 1.60 65 .99 1.53 70 .95 1.46 75 .91 1.41' 80 .88 1.35 85 .85 1.31 SLOPE = .480 ' SLOPE _ .580 DURATION MINUTES FREQUENCY 10 100 YEAR YEAR 5 3.23 4.94 6 2.96 4.53 7 2.75 4.21 8 2.58 3.95 9 2.44 3.73 10 2.32 3.54 11 2.21 3.39 12 2..12 3.25 13 2.04 3.13 14 1.97 3.02 15 1.91 2.92 16 1.85 2.83 17 1.80 2.75 18 1.75 2.67 19 1.70 2.60 20 1.66 2.54 22 1.59 2.43 24 1.52 2.33 26 1.46 2.24 28 1.41 2.16 30 1.37 2.09 32 1.33 2.03 34 1.29 1.97 36 1.25 1.92 38 1.22 1.87 40 1.19 1.82 45 1.13 1.72 50 1.07 1.64 55 1.02 1.56 60 .98 1.50 65 .94 1.44 70 :91 1.39' 75 .88 1.35 80 .85 1.31 85 .83 1.27 SLOPE = .480 r ■r ■r sr rr ai r rr ar rr �r ar . rr rr r r� rr rr r m m 1 cD - -- < - . - 3.._. -H-O U-R ' RAINFALL STO -R M- PATTERNS . 6.- .H -O -U. R STQR_6 IN PERCENT V24 _.._ .. _.. -HOUR STORM TIME $ -MIN !0 -MIN PERIOD IS -NiN 30 -MIN TIME 5 -MIN P ERI OD PERIOD PER10D PERIOD l0 -MIN 15 -MjN 30 -MIN TIME PERIOD PERIOD PERIOD PERIOD 5 -MIN PERIOD TINE PERIOC IS -MIN PERIOD 30 -MIN PERIOD 60 -MIN PERIOD PERI00 TIME 15 -MIN PEP300 D PERIOD 1 PERIOD 1.3 2.6 3.7 B.5 l 5 1.1 1.7 3.6 49 50 1.7 I.6 l 2 2 •3 5 .7 1.2 1.3 49 50 2.5 2.6 2 1.3 1.1 2.6 3.3 4.B 10.0 2 5.1 13.9 7 •6 .5 1.2 1.9 4.3 1.7 2.1 4.B 51 1.9 J •3 •6 1.8 51 52 2.B '2 3 4 1.5 3.3 4.9 17.4 4 5 .b 1.4 2.2 4.9 52 1.4 2.4 5.3 53 2.0 2.1 s S .4 .3 .1 •B 2.1 2.8 53 .9 3.4 5 6 1.5 1.0 3.3 3.4 6.6 29.9 7.3 20.3 6 .6 .7 1.5 2.4 S.8 Si 2.1 6 7 .3 1.0 1.0 2.9 3.8 5♦ 55 3.4 2.3 r. T 1.5 4.4 e.e T B .7 1.6 2.4 6.8 55 1.6 2.5 9.0 56 2.2 2.3 8 .3 .4 1.1 ♦.6 56 2.3 B 9 I.B l.B ♦,2 5.3 9.0 12.3 9 .7 .7 1.6 2.6 11.6 ST 2.4 9 IO .4 1.7 1.5 6.J 8.2 5T 58 2.7 2.6 ' 10 1.5 5.1 17.5 10 11 .7 1.b 2.7 14.4 58 1.6 2.R 25.1 2.4 2.5 11 •4 •5 1.3 1.0 59 2.6 11. 12 1.6 It 6.4 5.9 16.1 t.2 12 .7 .8 59 1.7 3.0 4.4 60 2.6 12 13 .5 •5 1.6 I.B 7.3 10.8 60 61 2.5 2.• IJ l0 2.2 2.2 7.3 8.5 13 It .B .8 1.7 3.2 bl I.B 3.6 62 3.1 3.6 14 .S 2.0 I1.♦ 62 2.7, • IS 2.2 14.1 I5 .B 1.8 4.3 63 3.9 15 l6 •5 .e 2.1 2.5 !0.♦ B.4 63 64 1.9 1.9 16 17 2.0 2.6 14.1 3.8 16 I7 •B .B 1.8 4.7 64 2.0 5.♦ 65 4.2 0.7 17 .6 3.0 3.7 1.4 l.9 65 •4 1B 2.7 2.4 lB 19 .B .8 2.0 h.2 66 2.L 6.9 5.6 1R 10 •T •7 7.9 1.3 66 67 •4 .3 19 20 2.4 2.7' 20 .8 67 2.2 7.5 68 1.9 9 20 21 •B •6 4.3 3.0 1.2 1.1 68 6q .3 . .5 21 22 3.3 3.1 21 22 .8 .8 2.5 10.6 69 2.8 14.5 70 •6 .5 22 •7 4.0 3.B 1.0 TO •5 23 2.9 27 24 .8 .9 3.0 3.t 71 3.2 1.0 72. .3 23 2♦ •8 .8 3.5 .9 .8 71 72 .5 •4 24 25 3.0 3.1 25 .8 3.5 .2 25 26 .9 .4 5.1 5.7 73 74 •4 .4 26 t.2 26 27 .9 3.9 4.2 27 1.0 6.8 75 .3 27 28 5.0 3.5 28 .9 .9 4 .5 28 29 1.0 1.0 4.6 5.3 76 77 .2 .3 29 30 6.8 7.3 29 30 .9 .9 4.8 5.1 30 31 1.1 1.2 4.L ♦.7 78 10 .4 .1 D31 8.2 31 32 .9 6.7 B.1 32. l.3 3.B 80 •2 _ 32 33 5.9 2.0 33 .9 1.0 10, 3J 34 1.5 1.5 •B .6 gl 82 .3 .7 'I Z T 34 35 1.8 1.8 34 35 1.0 1.0 2.8 1.1 35 36 l.6 1•T 1.0 9 83 84 .3 .2 D 36 .6 36 31 1.0 I.0 .5 37 .8 85 .3 38 79 20 2.0 2.1 .5 •7 86 87 •2 •3 �7 y r 1 39 40 1.1 1.1 40 2.2 .S 88 .2 nI - 4] 1.2 41 42 1.5 1.5 .6 .5 Bq 90 3 .2 T ~I^ t7 42 1.3 43 44 2.0 .5 •5 91 92 .2 .2 tt 45 1.4 1..5 45 1 9 l.9 .S 97 .2 46 1.5 46 47 1.9 1.7 .4 .4 9♦ 95 .2 .2 Z 47 48 1.6 1.6 48 1.8 .4 96 .2 M Z U) NOTES: 1. 3 and 6 -hour patterns based on the Indio area thunderstorm of September 24,1939. 2. 24 -hour patterns based on the general storm of March 2 8, 3,1938. precipitation Frequency Data Server POINT PRECIPITATION FREQUENCY ESTIMATES FROM NOAA ATLAS 14 California 33.67374 N 116.30206 W 98 feet from "Precipitation- Frequency Atlas of the United States" NOAA Atlas 14, Volume I, Version 3 bok B G.M. onnin, D. Todd, B. Lin, T. Parz k ' y M.Y e ta, and Riley NOAA, National Weather Service, Silver Spring, Maryland, 2003 Extracted: Wed Jan 25 2006 Precipitation Frequency Estimates (inches) ARI* 5 10 15 30 60 120 3 6 12 24 48 4 7 [JW[� years) mio min min min min min hr hr hr hr hr day day 0.13 0.20 0.25 0.34 0.42 0.56 0.65 0.87 1.07 1.17 1.29 1.39 1.51 1.60 1.76 1.97 0.21 0.32 0.40 0.54 0.66 0.86 0.98 1.28 1.57 1.76 1.99 2.14 2.33 2.47 2.73 3.04 10 0.28 0.42 0.52 0.70 0.87 l.11 1.25 1.61 I.95 2.23 2.56 2.97]Kfl 3.48 3.87 25 0.38 0.58 0.72 0.97 Ej 1.49 1.65 2.07 2.47 2.88 3.40 3.63 3.90 4.16 4.55 5.03 a . Vd. 45 1 160 3.43 2.37 50 0.48 0.73 0.90 1.22 1.51 1.82 1.99 2.45 2.89 3.42 4.12 4.39 4.68 4.99 5.43 5.97 6.62 7.15 100 0.59 0.90 1.11 1.50 1.85 2.20 2.37 2.86 3.33 4.00 4.93 5.23 5.53 5.90 6.38 6.98 7.68 8.31 200 0.72 1.09 1.36 1.83 2.26 2.64 2.80 3.30 3.79 4.62 5.83 6.17 6.45 6.89 7.41 8.06 8.81 9.54 500 0.92 1.40 1.74 2.34 2.90 3.29 3.44 3.94 4.44 5.51 7.17 7.55 7.80 8.35 8.89 9.60 10.38 11.28 1000 I.10 1.68 2.08 2.80 3.47 3.87 3.98 4.48 4.96 6.24 8.33 8.74 8.93 9.58 10.11 10.86 11.64 12.66 MIM version of table These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval. Please refer to the documentation for more information. NOTE: Formatting forces estimates near zero to appear as zero. Partial duration based Point Precipitation Frequency Estimates Version: 3 33.67374 N 116.30206 W 98 ft 1 2 3 4 5 6 7 8 910 20 30 40 50 80 100 140 200 300 500 700 1000 Wed Jan 25 14:16:51 2006 Average Recurrence Interval (years) Duration 5 -min 48 -hr ->E- 30 -day �- 10 -min -e- 3-hr -�-- 4 -day -�- 45 -day -..s- 15 -min -+- 6 -hr o 7-day -e- 60-day - 30- min -e- 12 -hr + 10 -day + 60 -min -x- 24 -hr --e-- 20 -daU --e- Page 1 of 4 I ittp: //hdsc.nws.noaa.gov /cgi- bin /hdscibuildout.perl? type =pf& series =pd &units =us &statename= SOUTHE... 1/25/2006 precipitation Frequency Data Server Partial duration based Point Precipitation Frequency Estimates Version: 3 33.67374 H 116.30206 W 98 ft i L L L L E I I I I I I I Wed Jan 25 14:16:51 2006 T T T T T T 3) S S t S t S t t t N N N N N N N M M N I I I 1 1 1 1 1 a Z a 7S M "r .D co Cu CD V- %D OD I I I I I I I I 1 I N M V M V u) N m t-0 m m u) 0 Duration N M � �O Average Recurrence Interval _ (years) 2 -e- 10-0- 5 200 -+� - 10 500 + ' 25 ?E 1000 �- 50 -�- Confidence Limits - * Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARP- 5 10 15 30 60 120 3 6 12 24 48 4 7 10 20 (years) min min min min min min hr hr hr hr hr day day day day [ 0 0.17 0.26 0.32 0.43 0.54 0.70 0.80 1.07 1.30 1.40 1.54 1.66 1.79 1.88 2.07 5 0.27 0.41 0.50 0.68 0.84 1.07 1.20 1.58 1.91 2.11 2.36 2.54 2.73 2.89 3.20 10 0.35 0.53 0.66 0.89 1.10 1.37 1.53 1.97 2.37 2.66 3.03 3.26 3.48 3.69 4.07 25 0.48 0.73 0.91 1.22 1.51 1.83 2.02 2.53 3.00 3.44 4.03 4.34 4.58 4.84 5.32 50 0.60 0.91 1.13 1.52 1.88 2.23 2.42 2.99 3.50 4.09 4.90 5.24 5.50 5.82 6.36 100 0.73 1.12 L39 L87 2.31 2.70 2.90 3.50 4.05 4.79 5.87 6.27 6.53 6.88 7.48 [ 200 0.89 1.36 1.69 2.27 2.81 3.23 3.44 4.05 4.62 5.55 6.96 7.42 7.66 8.09 8.72 500 1.15 1.75 2.17 2.92 3.61 4.07 4.27 4.91 5.44 6.67 8.64 9.16 9.38 9.87 10.52 1000 1.39 2.l i 2.61 3.52 4.35 4.80 4.99 5.63 6.14 7.59 10.10 10.66 10.84 11.38 12.06 The upper bound of the confidence interval at 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are greater than. These precipitation frequency estimates are based on a partial duration series ARI is the Average Recurrence Interval. ease refer to the documentation for more information. NOTE: Formatting prevents estimates near zero to appear as zero. 30 11 45 11 60 4.00 4.30 5.07 5.44 6.55 7.06 7.74 8.36 9.04 9.75 10.41 11.21 12.38 13.31 13.96 15.04 I� * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) -IF-] �:�-s- 5 10 15 30 60 120 3 6 12 24 48 4 7 10 20 30 45 60 min min min min min min hr hr hr hr hr day day day 11 day day day day 2 0.11 0.16 0.20 0.27 0.34 0.46 0.53 0.71 0.88 0.98 1.09 1.18 1.28 1.36 1.50 1.68 1.89 2.01 0.17 0.26 0.32 0.42 0.53 0.70 0.80 1.05 1.29 1.47 1.68 1.80 1.96 2.10 2.31 2.60 2.90 3.11 10 0.22 0.33 0.41 0.55 0.69 0.89 1.01 1.31 1.58 1.85 2.15 2.31 2.49 2.67 2.94 3.29 3.67 3.93 -1 t : //hdsc.nws.noaa.gov /cgi- bin /hdscibuildout.perl? type= pf &series=pd &units =us &statename= SOUTHE... Page 2 of 4 1/25/2006 ipitation Frequency Data Server 25 110 .30 110 .45 110 .56 110 .75 110 .93 111 .18 1.33 1.67 1199 JL2 .38 2.83 3.03 3.23 3.48 50 0.36 0.56 0.69 0.93 1.15 1.42 1.58 1.95 2.31 2.80 3.39 3.63 3.83 4.13 100 OF441 0.67 0.83 1.12 1.38 1.69 1.85 2.25 2.62 3.25 4.00 4.26 4.49 4.84 200 0.52 0.OF 99 IFIIIEEI 1.98 2.15 2.56 2.96 3.71 4.67 4.95 5.17 5.58 [500 0.65 0.99 I.23 1.65 2.04 2.40 2.56 2.99 3.40 4.35 5.63 5.95 6.14 6.64 1000 0.76 1.15 1.43 1.92 2.38 2.75 2.91 3.34 3.74 4.87 6.43 6.78 6.93 7.53 The lower bound of the confidence interval at 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are less These precipitation frequency estimates are based on a gar tial duration maxima series, ARI is the Average Recurrence Interval. Please refer to the documentation for more information. NOTE: Formatting prevents estimates near zero to appear as zero. Maps - ■ 3.81 j 4.25 4.71 5.05 4.51 5.03 5.53 5.92 5.25 5.83 6.38 6.83 6.04 6.66 7.26 7.76 Fj2 j 7.83 8.46 9.05 8.00 8.76 9.39 10.08 than. 11 fi . 4' -W 11 F .:3'"111 Ither Maps/Photographs - 11 6.2"W ctor M ary Area nal Park Park Y _.IA 8 mi � 0 km eso ution Page 3 of 4 new USGS digital orthophoto quadrangle (DOQ) covering this location from TerraServer; USGS Aerial Photograph may also be available m this site. A DOQ is a computer - generated image of an aerial photograph in which image displacement caused by terrain relief and camera tilts has been -emoved. It combines the image characteristics of a photograph with the geometric qualities of a map. Visit the National Digital Orthophoto Program (NDOP) imore information. atershed/Stream Flow Information - d the Watershed for this location using the U.S. Environmental Protection Agency's site. ittp: //hdsc.nws.noaa.gov /cgi- bin /hdsc/buildout.perl ?type=pf& series =pd &units =us &statename= SOUTHE... 1/25/2006 recipitation Frequency Data Server limate Data Sources - recipitation frequency results are based on data from a variety of sources, but largely NCDC. The following links provide general information bout observing sites in the area, regardless of if their data was used in this study. For detailed information about the stations used in this study, lease refer to our documentation. Page 4 of 4 sing the National Climatic Data .enter's (NCDCI station search engine, locate other climate stations within: +/ 0 m_IEWIs oR... + `degree .�,� of this location (33.67374/-116.30206). Digital ASCII data can be obtained directly from NCDC. Find Natural Resources Conservation Service (NRCS) SNOTEL (SNOwpack TELemetry) stations by visiting the Western Regional Climate Center's state specific SNOTEL tation Imps. MHyd ro meteorological Design Studies Center DOC/NOAA/National Weather Service 1325 East -West Highway elver Spring, MD 20910 01)713 -1669 uestions ?: M__SC,Qj&stions(@noaa.gov r 1 :/ – — ttp /hdsc.nws.noaa.gov /cgl btn/hdsc/bulldout.perl? type —pf &serves =pd &units= us &statename= SOUTHE... 1/25/2006 m m m m m r r ' m m m m m m r m m m m RATIONAL METHOD CALCULATION FORM PROJECT: ARNOLD PALMER JOB NO: 06001 DATE: 01/30/06 PREPARED BY ESSI SHAHANDEH FEf1UENCY: 10YR CLIENT: BY: AMG DRAINAGE AREA SOIL & A 1 C A Q £ Q SLOPE SECTION V L T £ T REMARKS DEV.TYPE ACRES IN /HR CFS CFS % FPS FT MIN A 90 -B 0.29 3.41 0.89 0.88 7.40 INITIAL AREA L =197' H =1.0' 0.88 SHEET 1 m m m m m m RATIONAL METHOD CALCULATION FORM PREPARED BY ESSI SHAHANDEH DRAINAGE AREA SOIL $ A I C DEV. TYPE ACRES IN /HR PROJECT: ARNOLD PALMER JOB NO: 06001 FEQUENCY: 100YR CLIENT: BY: AMG All I £ Q I SLOPE SECTION V I • L I T CFS CFS % FPS FT MIN DATE: 01/30/06 £ T I REMARKS A 90•B 0.29 5.56 0.89 1.44 7.40 INITIAL AREA L =197' H =1.0' 1.44 SHEET 1 L 1000 TC' 100 90 LIMITATIONS: I. Maximum length = 1000'- 2. Maximum area = 10 Acres TC 5 900 80 a 800 70 H L 6 v 400 0 300 a 700 60 , ° o S 200 7 a�i Cw _� N CL g c 100 600 C 50 0 0 C 60 8 > 0 °1 40 4) p 0% u, 30 o° 20 9 0 500 _ ', ° 35 c 10 o a a 8 �' E y n ; 6 / K Ai I I 400 o 30 v w Undeveloped 0 12 Good Cover w / o d 350 25 / Undeveloped 1.0 0 ° Fair Cover r. ;6 / 14 w 0 300 Undevef p d p 15 ° 20 `Zl Pd6r Cover o 19 16—.s o 18 17 Single Family > 50 17 250 �- (I/4 Acre) 18 — J J-T 15 Commercial 0 19 ° rn v 14 (Pav 20-- ° d �00 = 13 v o J Q 12 21 r- / 25 0 ° KEY 150 E 9 L —H Tc —K —Tc' c 30 EXAMPLE.' E- -7 (1) L =550', H =5.0, K= Single Family(1 /4 Ac.) 35 Development , Tc = 12.6 min. 6 (2) L =550', H =5.0', K = Commercial 100 Development , Tc = 9.7 min. 40 5 1-4 Reference: Bibliography item No. 35. R C F'C 81 W C C TIME OF CONCENTRATION HYDROLOGY J\iIANUAL FOR INITIAL SUBAREA PLATE 0 -3 1.0 12 ' 0.9-- .9 11 10.0 - 8.0- ' 10 0.8-% 6.0= 4.0- 0.7 0.2 0.03- 1 0.02- -2 ' 0.15 0.01- La 4' Q�! 01A 1.5 LO PONDING 01 1.2 h (OPENING HEIGHT) ' LOCAL DEPRESSION (a) H (DEPTH OF FLOW) BASED ON THE BUREAU OF PUBLIC ROADS 'DIVISION TWO , WASH., D.C. 1073.03 5.0 4.0 3.0 2.0 , z z 1.5 x v 0 1.0 0 0.9 = 0.8 c� = 0.7 0 z 0.6 z 0 0.5 a a! Q 3 0.4 LL- 0 0 r 0.3 LL- 0 0 � 0.25 0.2 0.15 CURB 0.1 NOMOGRAPH FOR CAPACITY OF CURB OPENING INLETS AT LOW POINTS 8 3.0 0 7.5 UJ ' 0.6 7 2.0 a 6.5 LZ 1 U G z h 0.5 6 1, ,p 5.5 0.8 QI`�r 0.6 v/ 0.4-- 5 z 4.5 z 0.3 0 0.2 z v 0.3 0 3.5 w / . 0 z z 0 �m 0.1 ~ 0 0 0.25 3 0.08 w ' 0 0 0.06 i 2.5 = \04-v o_ 0.2 0.03- 1 0.02- -2 ' 0.15 0.01- La 4' Q�! 01A 1.5 LO PONDING 01 1.2 h (OPENING HEIGHT) ' LOCAL DEPRESSION (a) H (DEPTH OF FLOW) BASED ON THE BUREAU OF PUBLIC ROADS 'DIVISION TWO , WASH., D.C. 1073.03 5.0 4.0 3.0 2.0 , z z 1.5 x v 0 1.0 0 0.9 = 0.8 c� = 0.7 0 z 0.6 z 0 0.5 a a! Q 3 0.4 LL- 0 0 r 0.3 LL- 0 0 � 0.25 0.2 0.15 CURB 0.1 NOMOGRAPH FOR CAPACITY OF CURB OPENING INLETS AT LOW POINTS CATCH BASIN - STORM DRAIN DESIGN PREPARED BY ESSI SHAHANDEH DATE: 2/9/2006 JOB #: 06001 PROJECT: ARNOLD PALMER OFFICES BY: AMG PIPE BASIN HGL100 STORM DRAIN LINE: "A" DIA.(IN) 0100(CFS) WS100 OUTLET DESIGN (OPEN) 18 1.44 • 45.00 VELOCITY IN 18 " PIPE Q= 1.44 0.81 PER SEC. HV= V212G= 0.010 A= 1.77 V =Q /A WS100 IN BASIN 45.000 STORM DRAIN LINE DESIGN LENGTH OF PIPE(d) 16.50 MANNING "S INDEX(n) 0.012 TYPE OF PIPE CPP(N -12) DESIGN FOR CATCH BASIN NO. 1 PROP. WIDTH OF OPENING (W)(FT) CURB HEIGHT (IN) DEPTH OF DEPRESSION (IN) DEPTH OF FLOW AT OPENING (H)(FT) HEIGHT OF OPENING (h)(IN) Q100 TO OPENING (CFS) TC AT OPENING Sf =[ Q n ] 2 K' =0.463 Sf =[ 0.017280 ]2= 0.000160 [d 8 /3(K')] . [ 1.366925 ] Hf =L(Sf) Hf= 0.0026 HGL AT U.S.END= 45.003 1.1 HV= 0.011 100YR WS IN CB= 45.014 4.00 H /h= 0.12 6.00 Q /L= 2.50 (PONDED TO TC) 4.00 0.10 Q= 1.44 0.58 FOOT WIDE OPENING (MIN) 10.00 (Q/L) 2.50 USE W(MIN)= 4.00 OK 1.44 46.33 VS HGL 45.01 OK SHEET 1 OF 1 rr r rr r rr rr r rr rr r rr r r rr rr rr r� rr rr STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 " /HR TRIBUTARY RAINFALL FOR 100 YEAR 3 HOUR STORM (SEE PLATE E -5.6)= 2.37 "73HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)- ACCU.VOL(CF) 1 2.6. 0.062 0.814 0.051 30.4 0.0 10.2 30.4 0.0 0.000 2 2.6 0.062 0.814 0.051 30.4 0.0 10.2 30.4 0.0 0.000 3 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 4 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 5 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 6 3.4 0.081 0.815 0.066 39.8 0.0 10.3 39.8 0.0 0.000 7 4.4 0.104 0.816 0.086 51.6 0.0 10.3 51.6 0.0 0.000 8 4.2 0.100 0.816 0.082 49.2 0.0 10.3 49.2 0.0 0.000 9 5.3 0.126 0.818 0.104 62.2 0.0 10.4 62.2 0.0 0.000 10 5.1 0.121 0.817 0.100 59.9 0.0 10.4 59.9 0.0 0.000 11 6.4 0.152 0.819 0.125 75.3 0.0 10.4 75.3 0.0 0.000 12 5.9 0.140 0.818 0.116 69.3 0.0 10.4 69.3 0.0 0.000 13 7.3 0.173 0.820 0.143 86.0 0.0 10.5 .86.0 0.0 0.000 14 8.5 0.201 0.822 0.167 100.4 0.0 10.6 100.4 0.0 0.000 15 14.1 0.334 0.830 0.280 168.1 0.0 10.9 168.1 0.0 0.000 16 14.1 0.334 0.830 0.280 168.1 0.0 10.9 168.1 0.0 0.000 17 3.8 0.090 0.815 0.074 44.5 0.0 10.3 44.5 0.0 0.000 18 2.4 0.057 0.8131 0.0471 28.0 0.0 10.2 28.0 0.0 0.000 1179.0 SHEET 1 OF 2 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS D= 4' -5' D= 3'-4' DEPTH AREA(SF) DIFF.AREA(SF) AVr :..VOL/FT(CF: ACCUM.VOL(CF) IMP AREA IN BASIN 0.000 3 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =O.OQ' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 1 0.000 2 0.000 3 0.000 4 0.000 5 0.000 6 0.000 7 0.000 8 0.000 9 0.000 10 0.000 11 0.000 12 0.000 13 0.000 14 0.000 15 0.000 16 0.000 17 0.000 18 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.018 0.000 0.023 0.000 0.022 0.000 0.028 0.000 0.027 0.000 0.034 0.000 0.031 0.000 0.039 0.000 0.045 0.000 0.076 0.000 0.076 0.000 0.020 0.000 0.013 4 0.01 1472.86 1472.86 0.01 4 0.01 1472.86 1472.86 0.01 FLAT 7 0.02 1478.51 1478.51 0.02 INC 7 0.02 1478.51 1478.51 0.02 FLAT 7 0.02 1478.51 1478.51 0.02 FLAT 0.02 1479.32 1479.32 0.02 INC 0.02 1487.41 1487.41 0.02 PEAK 0.02 1485.79 1485.79 0.02 DEC 0.03 1494.73 1494.73 0.03 PEAK 0.03 1493.10 1493.10 0.03 DEC 0.03 1503.69 1503.69 0.03 PEAK 0.03 1499.61 1499.61 0.03 DEC 0.04 1511.05 1511.05 0.04 INC 0.05 1520.90 1520.90 0.05 INC 0.08 1567.41 1567.41 0.08 INC 0.08 1567.41 1567.41 0.08 FLAT 0.02 1482.55 1482.55 0.02 DEC 0.011 1471.251 1471.25 0.01 DEC SHEET 2 OF 2 ..mm m������■� m��mm Mommm mm mm mm mommimmmommm mm mmmmmmmmmm 4 0.01 1472.86 1472.86 0.01 4 0.01 1472.86 1472.86 0.01 FLAT 7 0.02 1478.51 1478.51 0.02 INC 7 0.02 1478.51 1478.51 0.02 FLAT 7 0.02 1478.51 1478.51 0.02 FLAT 0.02 1479.32 1479.32 0.02 INC 0.02 1487.41 1487.41 0.02 PEAK 0.02 1485.79 1485.79 0.02 DEC 0.03 1494.73 1494.73 0.03 PEAK 0.03 1493.10 1493.10 0.03 DEC 0.03 1503.69 1503.69 0.03 PEAK 0.03 1499.61 1499.61 0.03 DEC 0.04 1511.05 1511.05 0.04 INC 0.05 1520.90 1520.90 0.05 INC 0.08 1567.41 1567.41 0.08 INC 0.08 1567.41 1567.41 0.08 FLAT 0.02 1482.55 1482.55 0.02 DEC 0.011 1471.251 1471.25 0.01 DEC SHEET 2 OF 2 SHEET 2 OF 2 STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 "/HR TRIBUTARY RAINFALL FOR 100 YEAR 6 HOUR STORM.(SEE PLATE E -5.6)= 2.86 "76HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 1 1.7 0.049 0.813 0.040 35.9 0.0 15.4 35.9 0.0 0.000 2 1.9 0.054 0.813 0.045 40.2 0.0 15.4 40.2 0.0 0.000 3 2.1 0.060 0.814 0.049 44.4 0.0 15.4 44.4 0.0 0.000 4 2.2 0.063 0.814 0.052 46.5 0.0 15.5. 46.5 0.0 0.000 5 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 6 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 7 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 8 2.5 0.072 0.814 0.059 52.9 0.0 15.5 52.9 0.0 0.000 9 2.6 0.074 0.814. 0.061 55.1 0.0 15.5 55.1 0.0 0.000 10 2.7 0.077 0.815 0.064 57.2 0.0 15.5 57.2 0.0 0.000 11 2.8 0.080 0.815 0.066 59.3 0.0 15.5 59.3 0.0 0.000 12 3.0 0.086 0.815 0.071 63.6 0.0 15.6 63.6 0.0 0.000 13 3.2 0.092 0.815 0.075 67.8 0.0 15.6 67.8 0.0 0.000 14 3.6 0.103 0.816 0.085 76.4 0.0 15.7 76.4 0.0 0.000 15 4.3 0.123 0.817 0.102 91.4 0.0 15.8 91.4 0.0 0.000 16 4.7 0.134 0.818 0.111 100.0 0.0 15.8 100.0 0.0 0.000 17 5.4 0.154 0.819 0.128 115.0 0.0 15.9 115.0 0.0 0.000 '18 6.2 0.177 0.821 0.147 132.3 0.0 16.1 132.3 0.0 0.000 19 6.9 0.197 0.822 0.164 147.4 0.0 16.2 147.4 0.0 0.000 20 7.5 0.215 0.823 0.178 160.4 0.0 16.3 160.4 0.0 0.000 21 10.6 0.303 0.828 0.254 228.2 0.0 16.8 228.2 0.0 0.000 22 14.5 0.415 0.835 0.350 314.7 0.0 17.4 314.7 0.0 0.000 23 3.4 0.097 0.816 0.080 72.1 0.01 15.61 72.11 0.0 0.000 24 1.0 0.0 91 0.8121 0.0231 21.1 0.01 15.31 21.1 0.0 0.000 2134.300 SHEET 1 OF 2 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS D= 4' -5' D= 3'-4' DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL /FT(CF:ACCUM.VOL(CF) IMP AREA IN BASIN 0.000 3 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 1 0.000 2 0.000 3 0.000 4 0.000 5 0.000 6 0.000 7 0.000 8 0.000 9 0.000 10 0.000 11 0.000 12 0.000 13 0.000 14 0.000 15 0.000 16 0.000 17 0.000 18 0.000 19 0.000 20 0.000 21 0.000 22 0.000 23 0.000 24 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0:000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 BY: AG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH 0.000 0.01 0.000 0.01 0.000 0.02 0.000 0.021 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.026 0.000 0.027 0.000 0.029 0.000 0.031 0.000 0.035 0.000 0.041 0.000 0.045 0.000 0.052 0.000 0.060 0.000 0.067 0.000 0.073 0.000 0.103 0.000 0.142 0.000 0.033 0.000 0.010 VV.J. AKtA AUJ.AKEA W.S_ ELEV. 6 0.02 1476.67 1476.67 0.02 8 0.02 1479.58 1479.58 0.02 INC 0 0.02 1482.50 1482.50 0.02 INC 0.02 1483.96 1483.96 0.02 INC 3 0.02 1486.87 1486.87 0.02 INC 3 0.02 1486.87 1486.87 0.02 FLAT 3 0.02 1486.87 1486.87 0.02 FLAT 4 0.02 1488.34 1488.34 0.02 INC 5 0.02 1489.80 1489.80 0.02 INC 0.03 1491.26 1491.26 0.03 INC 0.03 1492.72 1492.72 0.03 INC 0.03 1495.65 1495.65 0.03 INC 0.03 1498.58 1498.58 0.03 INC 0.03 1504.44 1504.44 0.03 INC 0.04 1514.73 1514.73 0.04 INC 0.05 1520.63 1520.63 0.05 INC 0.05 1530.96 1530.96 0.05 INC 0.06 1542.81 1542.81 0.06 INC 0.07 1553.22 1553.22 0.07 INC 0.07 1562.16 1562.16 0.07 INC 0.10 1608.69 1608.69 0.10 INC 0.14 1668.08 1668.08 0.14 PEAK 0.03 1501.51 1501.51 0.03 DEC 0.01 1466.49 1466.49 0.01 DEC SHEET 2 OF 2 MENNEN MEME NONE ENE MEMEMEMEMEME IN IN ON. - �M■M■MEM■ME■EM■M I ENE 'e �MMMMMENNMMMMMMM ■EM■EM■ME■EM■M■■ME ME ME ' ENE �MENNEN MENEMMEN ■E ■ENE ' �e �MENNEN MEMEMEME MOMMEW �MENNEN ME■MEM■MME m ■�� VV.J. AKtA AUJ.AKEA W.S_ ELEV. 6 0.02 1476.67 1476.67 0.02 8 0.02 1479.58 1479.58 0.02 INC 0 0.02 1482.50 1482.50 0.02 INC 0.02 1483.96 1483.96 0.02 INC 3 0.02 1486.87 1486.87 0.02 INC 3 0.02 1486.87 1486.87 0.02 FLAT 3 0.02 1486.87 1486.87 0.02 FLAT 4 0.02 1488.34 1488.34 0.02 INC 5 0.02 1489.80 1489.80 0.02 INC 0.03 1491.26 1491.26 0.03 INC 0.03 1492.72 1492.72 0.03 INC 0.03 1495.65 1495.65 0.03 INC 0.03 1498.58 1498.58 0.03 INC 0.03 1504.44 1504.44 0.03 INC 0.04 1514.73 1514.73 0.04 INC 0.05 1520.63 1520.63 0.05 INC 0.05 1530.96 1530.96 0.05 INC 0.06 1542.81 1542.81 0.06 INC 0.07 1553.22 1553.22 0.07 INC 0.07 1562.16 1562.16 0.07 INC 0.10 1608.69 1608.69 0.10 INC 0.14 1668.08 1668.08 0.14 PEAK 0.03 1501.51 1501.51 0.03 DEC 0.01 1466.49 1466.49 0.01 DEC SHEET 2 OF 2 SHEET 2 OF 2 STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AMG DATE: 04/03/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90 %/ PERC.RATE _ RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= PERIOD ACCUM. (1/4 HR) % I(loo) C (AVG) Q (CFS) VOL(CF) 0.50 "/HR TRIBUTARY 4.00 "724HR AREA= 1.01 ACRES ADDITIONAL ADDITIONAL ADJUSTED AC -FT FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 1 0.2 0.008 0.810 0.007 23.6 0.0 15.3 23.6 0.0 0.000 2 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 3 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 4 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 5 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 6 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 7 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 8 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 9 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 - 10 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 11 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 12 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 13 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 14 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 15 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 16 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 17 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 18 0.7 0.028 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 19 0.7 0.028 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 20 0.8 0.032 0.812 0.026 94.5 0.0 15.8 94.5 0.0 0.000 21 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 22 0.7 0.0281 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 23 0.8 0.0321 0.812 0.0261 94.5 0.0 15.8 94.5 0.0 0.000 24 0.8 0.0321 0.8121 0.0261 94.5 0.0 15.8 94.5 0.0 0.000 14Z?J.1 UU SHEET 1 OF 9 � � m i m m m m m m m m m m m m m m m BY: AMG DATE: 04/03/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE _ RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= PERIOD' ACCUM. (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) 0.50 " /HR TRIBUTARY 4.00 "724HR AREA= 1.01 ACRES ADDITIONAL ADDITIONAL ADJUSTED AC -FT FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 0.9 0.9 1.0 1.0 1.0 1.1 1.2 1.3 1.5 1.5 1.6 1.7 1.9 2.0 2.1 2.2 1.5 1.5 2.0 2.0 1.9 1.9 1.7 1.8 0.036 0.036 0.040 0.040 0.040 0.044 0.048 0.052 0.060 0.060 0.064 0.068 0.076 0.080 0.084 0.088 0.060 0.060 0.080 0.080 0.076 0.0761 0.0681 0.0721 0.812 0.812 0.812 0.812 0.812 0.813 0.813 0.813 0.814 0.814 0.814 0.814 0.815 0.815 0.815 0.815 0.814 0.814 0.815 0.815 0.815 0.8151 0.8141 0.8141 0.030 0.030 0.033 0.033 0.033 0.036 0.039 0.043 0.049 0.049 0.053 0.056 0.063 0.066 0.069 0.072 0.049 0.049 0.066 0.066 0.063 0.063 0.056 0.059 106.3 106.3 118.2 118.2 118.2 130.0 141.9 153.7 177.5 177.5 189.4 201.3 225.1 237.0 248.9 260.9 177.5 338.6 558.1 776.0 980.4 1183.3 1361.01 1549.31 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 .15.9 15.9 16.0 16.0 16.0 16.1 16.1 16.2 16.4 16.4 16.5 16.6 16.7 16.8 16.9 17.0 16.4 17.5 19.1 20.7 22.1 23.6 24.91 26.21 106.3 106.3 118.2 118.2 118.2 130.0 141.9 153.7 177.5 177.5 189.4 201.3 225.1 237.0 248.9 250.2 0.0 0.0 0.0 0.0 0.0 0.01 0.01 0.01 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 161.1 321.0 538.9 755.3 958.2 1159.7 1336.2 1523.1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.004 0.007 0.012 0.017 0.022 0.027 0.031 0.035 14 lL /.0 SHEET 2 OF 9 BY: AMG DATE: 04/03/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE _ RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= PERIOD ACCUM. (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) 0.50 " /HR TRIBUTARY 4.60 "724HR AREA= 1.01 ACRES ADDITIONAL ADDITIONAL ADJUSTED AC -FT FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 49 2.5 0.100 0.816 0.082 1819.8 0.0 28.1 0.0 1791.7 0.041 50 2.6 0.104 0.816 0.086 2100.3 0.0 30.1 0.0 2070.2 0.048 51 2.8 0.112 0.817 0.092 2402.8 0.0 31.9 0.0 2370.9 0.054 52 2.9 0.116 0.817 0.096 2715.5 0.0 33.4 0.0 2682.1 0.062 53 3.4 0.136 0.818 0.112 3086.7 0.0 35.2 0.0 3051.4 0.070 54 3.4 0.136 0.818 0.112 3456.0 0.0 37.0 0.0 0.078 55 2.3 0.092 0.816 0.076 3691.8 0.0 38.2 0.0 .3419.0 3653.6 0.084 56 2.3 0.092 0.816 0.076 3926.4 0.0 39.3 0.0 3887.1 0.089 57 2.7 0.108 0.816 0.089 4207.7 0.0 40.7 0.0 4167.0 0.096 58 2.6 0.104 0.816 0.086 4475.7 0.0 42.0 0.0 4433.6 0.102 59 2.6 0.104 0.816 0.086 4742.3 0.0 43.3 0.0 4699.0 0.108 60 2.5 0.100 0.816 0.082 4995.7 0.0 44.6 0.0 4951.1 0.114 61 2.4 0.096 0.816 0.079 5235.9 0.0 45.7 0.0 5190.1 0.119 62 2.3 0.092 0.816 0.076 5462.9 0.0 46.8 0.0 5416.1 0.124 63 1.9 0.076 0.815 0.063 5641.2 0.0 47.7 0.0 5593.4 0.128 64 1.9 0.076 0.815 - 0.063 5818.5 0.0 48.6 0.0 5770.0 0.132 65 0.4 0.016 0.811 0.013 5817.1 0.0 48.6 0.0 5768.6 0.132 66 0.4 0.016 0.811 0.013 5815.7 0.0 48.6 0.0 5767.2 0.132 67 0.3 0.012 .0.811 0.010 5802.5 0.0 48.5 0.0 5754.0 0.132 68 0.3 0.012 0.811 0.010 5789.4 0.0 48.4 0.0 5741.0 0.132 69 0.5 0.020 0.811 0.016 5799.9 0.0 48.5 0.0 5751.4 0.132 70 0.5 0.020 0.811 0.016 5810.4 0.0 48.5 0.0 5761.91 0.132 71 0.5 0.0201 0.8111 0.016 5820.9 0.0 48.6 0.0 5772.3 0.133 72 0.4 0.016 0.811 0.013 5819.5 0.0 48.61 0.0 5770.91 0.132 73 AMG 0.016 0.811 BY: DATE: 38810 .48.6 0.0 JOB # 06001 0.4 0.016 REF: ARNOLD PALMER OFFICES 5816.6 0.0 SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 "/HR TRIBUTARY 0.3 RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= 4.00 "724HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 73 0.4 0.016 0.811 0.013 5818.0 0.0 .48.6 0.0 5769.5 74 0.4 0.016 0.811 0.013 5816.6 0.0 48.6 0.0 5768.1 75 0.3 0.012 0.811 0.010 5803.4 0.0 48.5 0.0 5754.9 76 0.2 0.008 0.810 0.007 5778.5 0.0 48.4 0.0 5730.1 77 0.3 0.012 0.811 0.010 5765.5 0.0 48.3 0.0 78 0.4 0.016 0.811 0.013 5764.3 0.0 48.3 0.0 .5717.2 5716.0 79 0.3 0.012 0.811 0.010 5751.4 0.0 48.3 0.0 5703.1 80 0.2 0.008 0.810 0.007 5726.7 0.0 48.1 0.0 5678.6 81 0.3 0.012 0.811 0.010 5713.9 0.0 48.1 0.0 5665.9 82 0.3 0.012 0.811 0.010 5701.2 0.0 48.0 0.0 5653.2 83 0.3 0.012 0.811 0.010 5688.6 0.0 48.0 0.0 5640.6 84 0.2 0.008 0.810 0:007 5664.2 0.0 47.8 0.0 5616.4 85 0.3 0.012 0.811 0.010 5651.8 0.0 47.8 0.0 5604.0 86 0.2 0.008 0.810 0.007 5627.6 0.0 47.7 0.0 5579.9 87 0.3 0.012 0.811 0.010 5615.3 0.0 47.6 0.0 5567.7 88 0.2 0.008 0.810 0.007 5591.3 0.0 47.5 0.0 5543.8 89 0.3 0.012 0.811 0.010 5579.2 0.0 47.4 0.0 5531.8 90 0.2 0.008 0.810 0.007 5555.3 0.0 47.3 0.0 5508.0 91 0.2 0.008 0.810 0.007 5531.6 0.0 47.2 0.0 5484.4 92 0.2 0.008 0.810 0.007 5508.0 0.0 47.1 0.0 5460.9 93 0.2 0.008 0.810 0.007 5484.5 0.0 47.0 0.0 5437.6 94 0.2 0.008 0.810 0.007 5461.1 0.0 46.8 0.01 5414.3 95 0.2 0.0081 0.8101 0.007 5437.9 0.0 46.7 0.0 5391.1 96 0.2 0.008 0.810 0.007 5414.7 0.0 46.6 0.0 5368.1 SHEET 4 OF 9 0.132 0.132 0.132 0.132 0.131 0.131 0.131 0.130 0.130 0.130 0.129 0.129 0.129 0.128 0.128 0.127 0.127 0.126 0.126 0.125 0.125 0.124 0.124 0.123 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL/FT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 43.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' D= 2' -3' D= V -2' D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 1 0.000 0.000 0.000 0.000 0.011 0.01 1468.19 1468.19 43.01 2 0.000 0.000 0.000 0.000 0.016 0.02 1476.29 ' 1476.29 43.02 INC 3 0.000 0.000 0.000 0.000 0.016 0.02 1476.29 1476.29 43.02 FLAT 4 0.000 0.000 0.000 0.000 0.021 0.02 1484.39 1484.39 43.02 PEAK 5 0.000 0.000 0.000 0.000 0.016 0.02 1476.29 1476.29 43.02 DEC 6 0.000 0.000 0.000 0.000 0.016 0.02 1476.29 1476.29 43.02 FLAT 7 0.000 0.000 0.000 0.000 0.016 0.02 1476.29 1476.29. 43.02 FLAT 8 0.000 0.000 0.000 0.000 0.021 0.02 1484.39 1484.39 43.02 INC 9 0.000 0.000 0.000 0.000 0.021 0.02 1484.39 1484.39 43.02 FLAT 10 0.000 0.000 0.000 0:000 0.021 0.02 1484.39 1484.39 43.02 FLAT 11 0.000 0.000 0.000 0.000 0.027 0.03 1492.50 1492.50 43.03 INC 12 0.000 0.000 0.000 0.000 0.027 0.03 1492.50 1492.50 43.03 FLAT 13 0.000 0.000 0.000 0.000 0:027 0.03 1492.50 1492.50 43.03 FLAT 14 0.000 0.000 0.000 0.000 0.027 0.03 1492.50 1492.50 43.03 FLAT 15 0.000 0.000 0.000 0.000 0.027 0.03 1492.50 1492.50 43.03 FLAT 16 0.000 0.000 0.000 0.000 0.032 0.03 1500.62 1500.62 43.03 INC 17 0.000 0.000 0.000 0.000 0.032 0.03 1500.62 1500.62 43.03 FLAT 18 0.000 0.000 0.000 0.000 0.037 0.04 1508.73 .1508.73 43.04 INC 19 0.000 0.000 0.000 0.000 0.037 0.04 1508.73 1508.73 43.04 FLAT 20 0.000 0.000 0.000 0.000 0.043 0.04 1516.86 1516.86 43.04 PEAK 21 0.000 0.000 0.000 0.000 0.032 0.03 1500.62 1500.62 43.03 DEC 22 0.000 0.000 0.000 0.000 0.037 0.04 1508.73 1508.73 43.04 INC 23 0.000 0.000 0.000 0.000 0.043 0.04 1516.861 1516.86 43.04 INC 24 0.000 0.000 0.000 0.000 0.043 0.04 1516.861 1516.86 43.04 FLAT SHEET 5 OF 9 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOUFT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN 0.000 26 0.000 27 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 43.00 . D =4.00' 9347 2429.000 8133 20081 . D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0.000 0 0 PERIOD D= 4' -5' D= 3'-4' 25 0.000 26 0.000 27 0.000 28 0.000 29 0.000 30 0.000 31 0.000 32 0.000 33 0.000 34 0.000 35 0.000 36 0.000 37 0.000 38 0.000 39 0.000 40 0.000 41 0.000 42 0.000 43 0.000 44 0.000 45 0.000 46 0.000 47 0.000 48 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 0.000 0.048 0.000 0.048 0.000 0.053 0.000 0.053 0.000 0.053 0.000 0.059 0.000 0.064 0.000 0.070 0.000 0.080 0.000 0.080 0.000 0.086 0.000 0.091 0.000 - 0.102 0.000 0.107 0.000 0.113 0.000 0.118 0.000 0.080 0.000 0.153 0.000 0.252 0.000 0.351 0.000 0.443 0.000 0.535 0.000 0.616 0.000 0.701 0.05 1524.99 1524.99 43.05 INC 0.05 1524.99 1524.99 43.05 FLAT 0.05 1533.12 1533.12 43.05 INC 0.05 1533.12 1533.12 43.05 FLAT 0.05 . 1533.12 1533.12 43.05 FLAT 0.06 1541.26 1541.26 43.061 INC 0.06 1549.40 1549.40 43.06 INC 0.07 1557.55 1557.55 43.07 INC 0.08 1573.86 1573.86 43.08 INC 0.08 1573.86 1573.86 43.08 FLAT 0.09 1582.02 1582.02 43.09 INC 0.09 1590.19 1590.19 43.09 INC 0.10 1606.54 1606.54 43.10 INC 0.11 1614.72 1614.72 43.11 INC 0.11 1622.91 1622.91 43.111 INC 0.12 1631.10 1631.10 43.121 PEAK 0.08 1573.86 1573.86 43.08 DEC 0.15 1684.47 1684.47 43.15 INC 0.25 1835.14 1835.14 43.25 INC 0.35 1984.74 1984.74 43.35 INC 0.44 2125.09 2125.09 43.44 INC 0.54 2264.43 2264.43 43.54 INC 0.62 2386.43 2386.43 43.62 INC 0.701 2515.731 2515.73 43.70 PEAK SHEET 6 OF 9 SHEET 7 OF 9 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL /FT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 43.00 D =4.00' 9347 2429.000 81.33 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'4 D= 2' -3' D= V -2' D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 49 0.000 0.000 0.000 0.000 0.823 0:82 2701.44 2701.44 43.82 INC 50 0.000 0.000 0.000 0.000 0.950 0.95 2894.03 2894.03 43.95 INC 51 0.000 0.000 0.000 0.049 0.000 1.05 3060.08 3060.08 44.05 INC 52 0.000 0.000 0.000 0.130 0.000 1.13 3206.94 3206.94 44.13 INC 53 0.000 0.000 0.000 0.226 0.000 1.23 3381.27 3381.27 44.23 INC 54 0.000 0.000 0.000 0.321 0.000 1.32 3554.74 3554.74 44.321 INC 55 0.000 0.000 0.000 0.382 0.000 1.38 3665.48 3665.48 44.38 INC 56 0.000 6.000 0.000 0.442 0.000 1.44 3775.67 3775.67 44.44 INC 57 0.000 0.000 0.000 0.514 0.000 1.51 3907.78 3907.78 44.51 INC 58 0.000 0.000 0.000 0.583 0.000 1.58 4033.63 4033.63 44.58 INC 59 0.000 0.000 0.000 0.652 0.000 1.65 4158.86 4158.86 44.65 INC 60 0.000 0.000 0.000 0.717 0.000 1.72 4277.86 4277.86 44.72 INC 61 0.000 0.000 0.000 0.779 0.000 1.78 4390.67 4390.67 44.78 INC 62 0.000 0.000 0.000 0.838 0.000 1.84 4497.31 4497.31 44.84 INC 63 0.000 0.000 0.000 0.884 0.000 1.88 4581.03 4581.03 44.88 INC 64 0.000 0.000 0.000 0.929 0.000 1.93 4664.33 4664.33 44.93 PEAK 65 0.000 0.000 0.000 0.929 0.000 1.93 4663.67 4663.67 44.93 DEC 66 0.000 0.000 .0.000 0.929 0.000 1.93 4663.01 4663.01 44.93 DEC 67 0.000 0.000 0.000 0.925 0.000 1.93 4656.81 4656.81 44.93 DEC 68 0.000 0.000 0.000 0.922 0.000 1.92 4650.64 4650.64 44.92 DEC 69 0.000 0.000 0.000 0.925 0.000 1.92 4655.60 4655.60 44.92 INC 70 0.000 0.000 0.000 0.927 0.000 1.93 4660.52 4660.52 44.93 INC 71 0.000 0.000 0.000 0.930 0.000 1.93 4665.431 4665.43 44.93 PEAK 72 0.000 0.000 0.000 0.930 0.000 1.93 4664.761 4664.76 44.93 DEC SHEET 7 OF 9 m m m m m m i m m m m m m - m m m m m m RETENTION BASIN STORAGE AND DEPTH CALCULATIONS DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOUFT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 43.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' D= 2' -3' D= V -2' D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 73 0.000 0.000 0.000 0.929 0.000 1.93 4664.10 4664.10 44.93 DEC 74 0.000 0.000 0.000 0.929 0.000 1.93 4663.44 4663.44 44.93 DEC 75 0.000 0.000 0.000 0.926 0.000 1.93 4657.24 4657.24 44.93 DEC 76 0.000 0.000 0.000 0.919 0.000 1.92 4645.53 4645.53 44.92 DEC 77 0.000 0.000 0.000 0.916 0.000 1.92 4639.41 4639.41 44.92 DEC 78 0.000 0.000 0.000 0.915 0.000 1.92 4638.87 4638.87 44.92 DEC 79 0.000 0.000 0.000 0.912 0.000 1.91 4632.79 4632.79 44.91 DEC 80 0.000 0.000 0.000 0.906 0.000 1.91 4621.20 4621.20 44.91 DEC 81 0.000 0.000 0.000 0.902 0.000 1.90 4615.20 4615.20 44.90 DEC 82 0.000 0.000 0.000 0.899 0.000 1.90 4609.24 4609.24 44.90 DEC 83 0.000 0.000 0.000 0.896 0.000 1.90 4603.30 4603.30 44.90 DEC 84 0.000 0.000 0.000 0.890 0.000 1.89 4591.85 4591.85 44.89 DEC 85 0.000 0.000 0.000 0.886 0.000 1.89 4586.00 4586.00 44.89 DEC 86 0.000 0.000 0.000 0.880 0.000 1.88 4574.64 4574.64 44.881 DEC 87 0.000 0.000 0.000 0.877 0.000 1.88 4568.87 4568.87 44.88 DEC 88 0.000 0.000 0.000 0.871 0.000 1.87 4557.59 4557.59 44.87 DEC 89 0.000 0.000 0.000 0.868 0.000 1.87 4551.91 4551.91 44.87 DEC 90 0.000 0.000 - 0.000 0.862 0.000 1.86 4540.71 4540.71 44.86 DEC 91 0.000 0.000 0.000 0.855 0.000 1.86 4529.57 4529.57 44.86 DEC 92 0.000 0.000 0.000 0.849 0.000 1.85 4518.48 4518.48 44.85 DEC 93 0.000 0.000 0.000 0.843 0.000 1.84 4507.45 4507.45 44.84 DEC 94 0.000 0.000 0.000 0.837 0.000 1.84 4496.47 4496.47 44.84 DEC 95 0.000 0.000 0.000 0.831 0.000 1.83 4485.54 4485.54 44.83 DEC 96 0.000 0.000 0.000 0.825 0.000 1.83 4474.67 4474.671 44.831 DEC SHEET 8 OF 9 `� �c7 s- �'�pYy�.�.s�, r a'•z „�t�,}{� F"�. �_ 9"'r1 `�'r. .t �� r �'�`i 'fir Via. i�3 P• -�'S »3 i� .� p�,�X �. �,... ;k, -v 1. �' milli am 1 111111 Aa Jill liY a 0 I im ! i 1, 6 1 '�liffi? 0 an 1 1 — - a I €' h, IN THE CITY OF LA QUINTA, CALIFORNIA PRELIMINARY HYDROLOGY REPORT ARNOLD PALMER OFFICE BUILDINGS TENTATIVE TRACT MAP 34416 IN THE SW 1/4 OF .SECTION 6, T6S, R7E, SBM VICINITY MAP KS ESSI SH AH AN D EH CIVIL ENGINEER PALM DESERT 45 -175 Panorama Drive, Suite 'C, Palm Desert, CA 92260 Phone: (760) 340 -5597 • FAX: (760) 340 -1121 . — Planning -Civil Engineering — Structural Engineering QRpFESS /pN AR SHq 9y FyG, 0 W No. 47834 = m LLJ rn PREPARED UNDER THE DATE Exp. 12/3107 � DIRECT SUPERVISION OF: q OF CALF ESSI SHAHANDEH - RCE 47834 - EXPIRES.12 -31 -07 1 PRELIMINARY HYDROLOGY STUDY FOR 1 TENTATIVE TRACT 34416 IN THE SOUTHWEST ONE QUARTER OF SECTION 6, TOWNSHIP 6 SOUTH, RANGE 7 EAST, SAN 1 BERNARDINO MERIDIAN THE ARNOLD PALMER OFFICE COMPLEX 1 SITE LOCATION: THE NORTHEAST CORNER OF THE INTERSECTION OF DESERT CLUB DRIVE AND AVENUE 52. ADJACENT TO THE ARNOLD PALMER RESTAURANT IN LA QUINTA, CALIFORNIA 1 . THOMAS BROS GUIDE REFERENCE: PAGE 849 GRID F7 2006 EDITION GPS COORDINATE: 33.67347° N 116.30206° W RAINFALL DATA SOURCE: NOAA, NATIONAL WEATHER SERVICE, ATLAS 14 COMPUTER GENERATED FROM THEIR WEBSITE THE SITE LIES IN AN AREA NOT SHOWN IN THE ISOHYETAL CHARTS FOR THE STORM EVENTS IN THE RIVERSIDE COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT HYDROLOGY MANUAL. THESE RCFCWCD CHARTS WERE DERIVED FROM THE ORIGINAL NOAA ATLAS 14 CHARTS AND WERE NOT EXTENDED TO THE EASTERN PARTS OF THE COACHELLA VALLEY, PRESUMABLY THINKING THAT WHEN THIS AREA WOULD DEVELOP, A NEW MANUAL WOULD BE IN PLACE. NO UPDATE IS PLANNED AND THE DATA FOR THIS STUDY IS DERIVED DIRECTLY FROM THE NOAA WEBSITE BASED ON THE ORIGINAL ATLAS 14 CHART. THE SITE IS LOCATED AT http://hdsc.nws.noaa.gov/hdsc/i)fds/sa/sca pfds html INFORMATION ON THE STORM DATA IS BASED UPON GEOGRAPHIC LONGITUDE AND LATITUDE. THIS CHART IS INCLUDED IN THE STUDY AND IS CONSISTENTLY REPRODUCIBLE. SITE DESCRIPTION: 1 THE SITE IS CURRENTLY UTILIZED AS A LAKE FEATURE. THE ORIGINAL HYDROLOGY STUDY FOR THE ARNOLD PALMER RESTAURANT WAS PREPARED BY THE KEITH COMPANIES UNDER LOT 90 OF TRACT 28470 -1 DATED OCTOBER 6, 2000. THIS ANALYSIS WAS FOR THE ENTRY ROAD ON THE NORTH OF THIS SITE TO DESERT CLUB DRIVE AND THE PARKING LOT / 1 RESTAURANT SITE NORTHEASTERLY OF THIS SITE. THE LAKE EXISTING ON THE SITE WAS NOT TO BE USED FOR ANY STORAGE CAPACITY. ITS REMOVAL THEN DOES NOT AFFECT THE ADJACENT SITE ABILITY TO STORE ITS STORM WATER. 1 TWO ABOVE GROUND BASINS WILL BE PROVIDED AS WELL AS UNDERGROUND STORAGE FACILITIES. THE TWO BASIN WILL BE A MAXIMUM DEPTH OF TWO FEET. THE UNDERGROUND FACILITY CONSISTS OF 60 ADS SC -740 ABS PLASTIC "TENT' TYPE INTERLOCKING UNITS. THESE 1 UNITS ARE IN 6 ROWS OF 10 WITH A 0.5' SPACE BETWEEN UNITS. THE UNITS SIT ON A 6" BED OF 3/4" WASHED GRAVEL AND WRAPPED IN A NON -WOVEN FABRIC TO PREVENT INFILTRATION OF SOILS THAT MIGHT CLOG THE SYSTEM. STORM WATER IN THE PARKING AREA WILL BE 1 COLLECTED IN A CATCH BASIN LOCATED IN THE WEST END OF THE PARKING LOT AND CONVEYED VIA PIPE TO THE WEST RETENTION BASIN. THERE IT WILL ENTER THE SAND FILTER SYSTEM AND ENTER INTO THE UNDERGROUND STORAGE UNITS. C:\PROJ ECTSW MG2006 \06001 UIYDROLOGY\06001 _HYDRO_TR34416.wpd I. STUDY PURPOSE: PROVE THAT THERE IS ADEQUATE STORAGE ON SITE FOR THE 3 HOUR, 6 HOUR AND 24 HOUR 100 YEAR STORM EVENT. PROVE THE FUNCTION OF THE PROPOSED SYSTEM. ' ANALYSIS DETAILS: WHILE THE SITE IS NOT SHOWN WITH 90% COVERAGE, WE SHOW THAT THE STORAGE SUPPLIED IS ADEQUATE TO ACCOMMODATE FULL STORAGE UNDER THOSE CONDITIONS. THIS PROVIDES FOR ANY ADDITIONAL HARDSCAPES THAT MAY BE INSTALLED AT FUTURE DATES. THE SOIL TYPE USED FOR THIS ANALYSIS IS TYPE "B ". THE SOILS IN DOWNTOWN LA QUINTA ARE OF A SEDIMENTARY TYPE AND CONSIST OF CLAYS AND SILTS FROM THE ANCIENT LAKE BED AS WELL AS SILTS FROM THE COVE ALLUVIAL FAN TO THE SOUTH. AN INFILTRATION ' RATE OF 0.5' PER HOUR IS USED AND IS CONSISTENT WITH THE PREVIOUSLY APPROVED STUDY DONE FOR THE RESTAURANT. THE STUDY REFLECTS THE USE OF THE ADS SC -740 STORMTECH UNIT. IT PROVIDES 45.9 CUBIC FEET OF STORAGE PER UNIT. THE BASE IS AN OPEN DESIGN AND ALLOWS STORM WATER STORAGE ABOVE A GRAVEL BED. THE TENT -LIKE ' STRUCTURE PROVIDES H -20 LOADING AT ONLY 18" OF COVER AND CAN WITHSTAND UP TO 96" OF COVER. WATERS FORM THE PARKING LOT ARE CONVEYED VIA A RIBBON GUTTER TO CATCH BASIN NO. 1. THE AREAS OUTSIDE THE PARKING LOT (ROOFS, SIDEWALKS, ETC) WILL DRAIN DIRECTLY INTO THE OPEN RETENTION BASINS. AN EQUALIZER LINE CONNECTS THE TWO RETENTION BASINS. THE PIPE FROM CATCH BASIN NO. 1 DRAINS DIRECTLY TO A SAND FILTER STRUCTURE AND INTO THE UNDERGROUND STORAGE THROUGH A 6" PVC PIPE. THE ADS UNITS ARE INTERCONNECTED SLOWLY FILLING FROM ONE CHAMBER TO ANOTHER. THE BOTTOM OF THE UNITS PROVIDE 1815+ SQUARE FEET OF PERCOLATION AREA UNDERGROUND. AT A RATE OF 0.5' PER HOUR, THIS AMOUNTS TO 75.6 CUBIC FEET IN A ONE HOUR PERIOD OR 18.9 CUBIC FEET IN A 15 MINUTE PERIOD. VOLUMES SHOW THAT THE 3 ' HOUR AND 6 HOUR 100 YEAR STORMS ARE COMPLETELY STORED IN THE UNDERGROUND SYSTEM. THE 24 HOUR HUNDRED YEAR STORM IS PARTIALLY HELD UNDERGROUND UNTIL NEAR THE 10TH HOUR OR THE 37TH 15 MINUTE PERIOD. THE SYSTEM THEN WILL BACKUP INTO THE OPEN BASINS. THE UNDERGROUND STORAGE DURING THE REMAINDER OF THE STORM ' WILL CONTINUE TO PERCOLATE AT THE RATE OF 18.9 CUBIC FEET PER 15 MINUTE PERIOD. THIS IS ACCOUNTED FOR WITH THE ADDITIONAL LOSSES COLUMN IN THE HYDROGRAPH. IN THE PRIOR PERIODS TO OVERFLOW THE ENTIRE RUNOFF IS DIVERTED TO THE UNDERGROUND STORAGE AND IS ALSO ACCOUNTED FOR IN THE ADDITIONAL LOSSES ' COLUMN. THE MAXIMUM PONDING DEPTH OF 1.98 FEET IS REACHED IN THE OPEN RETENTION BASINS AT PERIOD 64 FOR THE 15 MINUTE ANALYSIS. CONCLUSIONS: THE DESIGN AS SHOWN IN THIS ANALYSIS SHOWS THAT ADEQUATE STORAGE FOR THE PROJECT IS PROVIDED. THE USE OF THE 90% COVERAGE WILL YIELD A CONSERVATIVE FIGURE FOR THE RUNOFF CALCULATIONS, INSURING THAT ANY CHANGES THAT MIGHT OCCUR AT A LATER DATE WILL NOT TAX THE SYSTEM. OVERFLOW IS ACHIEVED THROUGH THE ENTRY DRIVE AT THE NORTHWEST CORNER OF THE SITE ONTO DESERT CLUB DRIVE. IC:\PROJECTSINMG2006\ 06001\ HYDROLOGY \06001_HYDRO_TR34416.wpd 11 _ I j!33* k IZ ~ do IT Will t _ I (qqq�. � � . 1 _ �" a _ _ - ' ` Yee[ Va4 r � . - � — ,� i.;;` t_ ! I ..t_E_ ... ' .ii.!•N Tre T ,- - •� V f ♦V I: _r �. ,1 �' V,<to VdIeY `1I H r t3QY,N P.1- rK ' A �C l . ti-:- "-• , - ; 44� .T a': wd� ( ( t • .:n!4 "IRFr coV 2 r �• t f� 1- }� 13r� ,S'1 .t r`i � - spil, �' � � 1 _Y -� 1 � � r �, f { ,1 .'• ' J , (1� �. ado �r,a I n `` 'T tF N A� T i O N A t. 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A 0 b n L r Z c) m c z m _W D 0 - 0 D D c: p D D O Z RAINFALL INTENSITY - INCHES PER HOUR CATHEDRAL CITY CHERRY VALLEY CORONA DESERT HOT SPRINGS ELSINORE - WILD04AR DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY MINUTES MINUTES MINUTES MINUTES MINUTES 10 100 10 100 10 100 10 100 10 100 YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR 5 4.14 6.76 5 3.65 5.49 5 3.10 4.78 5 4.39 6.76 5 3.23 4.94 6 3.73 6.08 6 3.30 4.97 6 2.84 4.38 6 3.95 6.08 6 2.96 4.53 7 3.41 5.56 7 3.03 4.56 7 2.64 4.07 7 3.62 5.56 7 2.75 4.21 8 3.15 5.15 B 2.82 4.24 8 2.47 3.81 8 3.35 5.15 8 2.58 3.95 9 2.95 4.81 9 2.64 3.97 9 2.34 3.60 9 3.13 4.81 9 2.44 3.73 10 2.77 4.52 10 2.49 3.75 10 2.22 3.43 10 2.94 4.52 10 2.32 3.54 11 2.62 4.28 11 2.36 3.56 11 2.12 3.27 11 2.78 4.28 11 2.21 3.39 12 2.49 4.07 12 2.25 3.39 12 2.04 3.14 12 2.65 4.07 12 2.12 3.25 13 2.38 3.88 13 2.16 3.25 13 1.96 3.02 13 2.53 3.88 13 2.04 3.13 14 2.28 3.72 14 2.07 3.12 14 1.89 2.92 14 2.42 3.72 14 1.97 3.02 15 2.19 3.58 15 1.99 3.00 15 1.83 2.82 15 2.32 3.58 IS 1.91 2.92 16 2.11 3.44 16 1.92 2.90 16 1.77 2.73 16 2.24 3.44 16 1.85 2.83 17 2.04 3.32 17 1.86 2.60 17 1.72 2.66 17 2.16 3.32 17 1.80 2.75 18 1.97 3.22 18 1.80 2.71 18 1.66 2.58 18 2.09 3.22 18 1.75 2.67 19 1.91 3.12 19 1.75 2.64 19 1.63 2.52 19 2.03 3.12 19 1.70 2.60 20 1.85 3.03 20 1.70 2.56 20 1.59 2.46 20 1.97 3.03 20 1.66 2.54 22 1.75 2.86 22 1.61 2.43 22 1.52 2.35 22 1.86 2.86 22 1.59 2.43 24 1.67 2.72 24 1.54 2.32 24 1.46 2.25 24 1.77 2.72 24 1.52 2.33 26 1.59 2.60 26 1.47 2.22 26 1.40 2.17 26 1.69 2.60 26 1.46 2.24 28 1.52 2.49 28 1.41 2.13 28 1.36 2.09 28 1.62 2.49 28 1.41 2.16 30 1.46 2.39 30 1.36 2.05 30 1.31 2.02 30 1.55 2.39 30 1.37 2.09 32 1.41 2.30 32 1.31 1.98 32 1.27 1.96 32 1.50 2.30 32 1.33 2.03 34 1.36 2.22 34 1.27 1.91 34 1.23 1.90 34 1.45 2.22 34 1.29 1.97 36 1.32 2.15 36 1.23 1.85 36 1.20 1.85 36 1.40 2.15 36 1.25 1.92 38 1.28 2.09 38 1.20 1.80 38 1.17 1.81 38 1.36 2.09 38 1.22 1.87 40 1.24 2.02 40 1.16 1.75 40 1.14 1.76 40 1.32 2.02 40 1.19 1.82 45 1.16 1.89 45 1.09 1.64 45 1.08 1.66 45 1.23 1.89 45 1.13 1.72 50 1.09 1.78 50 1.03 1.55 50 1.03 1.58 50 1.16 1.78 50 1.07 1.64 55 1.03 1.68 55 .99 1.47 55 .98 1.51 55 1.09 1.68 55 1.02 1.56 60 .98 1.60 60 .93 1.40 60 .94 1.45 60 1.04 1.60 60 .98 1.50 94 _. 1,.53 ._ _. 65 .89. 1..3� _ 65 .90 1.40 65 .99 1.53 65 .94 1.44 70 .90 1.46 70 .85 1.29 70 .87 1.35 70 .95 1.46 70 .91 1.39 75 .86 1.41 75 .82 1.24 75 .84 1.30 75 .91 1.41 75 .88 1.35 80 .83 1.35 80 .79 1.20 80 .82 1.26 80 -88 1.35 BO .85 1.31 85 .80 1.31 85 .77 1.16 85 .80 1.23 85 .85 1.31 85 .83 1.27 SLOPE _ .580 SLOPE _ .550 SLOPE = .480 SLOPE _ .580 SLOPE _ .480 r m M C� cD :0 M -n RAINFALL PATTERNS IN PERCENT �JII I Z D r -D p� r r•1 r Z T Z 9 1.8 5.3 12.3 l0 1.5 5.1 17.6 ll 1.6 6.4 16.1 12 1.8 5.9 4.2 13 2.2 7.3 5 -MIN I4 2.2 8.5 30 -MIN IS 2.2 14.1 TINE -- 14.1 ..3.._ _H -0-U.R . ST O -R -M- PERIOD 18 2.7 2..4 PERIOD 19 2.4 PEAIOD PERIOD 20 2.7 PERIOD LIME 5 -MIN 10 -MIN 15 -MI. 30 -MIN ♦9 1•T PER100 PERIOD PERIOD PERIOD PERIOD D �\ 1 1.3 2.6 3.7 8.5 2T 5.0 1� d 2 1.3 2.6 e.B 10.0 50 2.6 3 1.1 3.3 5.1 13.9 51 ® 4 1.5 3.3 4.9 17.4 D 2.B 5 6 1.5 1.8 3.3 3.4 6.6 7.3 29.9 20.3 r 2.0 7 8 1.5 1. 4.4 e.2 8.e 9.0 �JII I Z D r -D p� r r•1 r Z T Z 9 1.8 5.3 12.3 l0 1.5 5.1 17.6 ll 1.6 6.4 16.1 12 1.8 5.9 4.2 13 2.2 7.3 5 -MIN I4 2.2 8.5 30 -MIN IS 2.2 14.1 TINE 16 20 .6 14.1 PER100 17 2. 38 PERIOD 18 2.7 2..4 PERIOD 19 2.4 PEAIOD PERIOD 20 2.7 PERIOD I 21 3.3 1.1 l.T 22 3.1 ♦9 1•T 23 2.9 •2 .5 24 3.0 49 25 3.1 2 .6 26 4.2 1.9 4.3 2T 5.0 1.8 2 28 3.5 .7 I.J 29 6.8 50 2.6 30 7.3 1.3 31 8.2 +.6 51 32 5.9 3 .3 33 2.0 1.8 34 1.8 2.B 4 35 1.8 l.4 2.2 36 .6 52 2.0 - .....&- ..FiO -UR. ..STOR.M.. _..._... 24 -HOUR. STORM TINE $ -MjN l0 -M7N 15-MIN 30 -MIN TIME 5 -MIN 7IME 15 -MIN 30 -MIN 60 -MIN TINE IS -MIN PEAIOD PER100 PER700 PE RI00 PERIOD PERI00 PEPIOO PERIOD PERIOD PEAIOD PERIOD PERI00 PERIOD I .5 1.1 l.T 3.6 ♦9 1•T 1 •2 .5 1.2 49 2.5 2 .6 1.2 1.9 4.3 50 1.8 2 .3 .7 I.J 50 2.6 3 1.3 2.1 +.6 51 1.9 3 .3 •6 1.8 51 2.B 4 .6 .b l.4 2.2 e.9 52 2.0 4 .+ .7 2.1 52 2.9 5 .6 l.e 2.4 5.3 53 2.1 5 .3 .B 2.8 53 3.4 6 .7 1.5 2.4 5.8 So 2.1 6 .3 1.11 54 3.4 7 1.6 2.4 6.8 55 ?.2 7 .3 1.0 3.8 55 2.3 8 .7 .7 1.6 2.5 0,0 56 2.3 B .+ 1.1 4.6 56 2.3 9 .7 1.6 2.6 11.6 57 2.4 9 .4 1.3 6.3 ST 2.7 10 . 7 1.6 2.7 14.4 58 2.4 10 .+ 1.5 8.2 58 2.6 11 •7 1.6 2.8 25.1 59 2.5 I1 ,5 1.3 7.0 59 2.6 12 .8 1.7 3.0 4.4 60 2.6 12 .5 1.6 7.3 60 2.5 13 .8 1.7 3.2 61 3.1 13 .5 1.8 10.8 61 2.4 14 •8 1.B 3.6 62 3.6 le .5 2.0 11.0 62 2.3 15 .8 1.8 4.3 63 3.9 1S •$ 2.1 10.4 63 1.9 l6 •8 1.8 4.7 64 4 2 16 •6 2.5 8.5 64 1.9 I7 .8 2.0 5.4 65 4.7 17 •6 3.0 1.4 65 ,4 1B .B 2.0 6.2 65 5.6 18 •7 3.3 1.9 66 ,4 19 .8 2.1 6.9 61 1.9 19 •7 3.9 1.3 67 .3 20 .8 2.2 7.5 68 20 •8 t.l 1.2 68 •3 21 .B 2.5 10.6 69 ,9 21 •6 J.0 1.1 69 .5 22 .B 2.8 11.5 70 .6 22 •7 ♦.0 1.0 70 ,5 23 •8 3.0 3.4 71 •5 .3 23 •8 3.0 .9 71 ,5 24 .9 3.2 1.0 72 2+ .8 3.5 .B 72 ,♦ 25 .8 3.5 .2 25 .9 5.1 13 .4 26 .9 3.9 26 .7 5.7 14 .4 27 .9 4.2 27 1.0 6.8 75 ,3 28 .9 0.5 28 1.0 4.6 76 .2 29 .9 4.8 29 I.0 5.3 77 .3 30 .9 S.1 30 1.1 5.1 78 •1 31 .9 6.7 3l 1.2 4.7 19 .3 32 .9 8.1 32 1.3 3.8 BO •2 33 ].0 10.3 33 1.5 .B 81 .3 34 1.0 2.8 34 1.5 •6 82 .J 35 1.0 1.1 35 1.6 1.0 83 .3 36 1.0 •5 36 1.7 .9 84 .2 37 1.0 37 1.9 .8 85 .3 3B 1.1 38 2.0 .5 g6 ,2 39 1.1 39 2.1 .7 g7 ,3 40 1.1 40 2.2 •5 89 .2 41 1.2 41 1.5 .6 B9 ,3 42 1.3 42 1.5 •5 90 .2 e3 1.1 43 2.0 .5 91 .2 44 1.4 44 2'.0 .5 92 .2 45 1.5 05 1.9 .5 93 .2 46 1.5 46 1.9 .4 94 .2 47 1.6 47 1.7 •4 95 .2 48 1.6 48 1.8 .+ 96 .2 NOTES: I. 3 and 6-hour patterns based on the Indio area thunderstorm of September 24,1939. 2. 24 -hour patterns based on the general storm of March 2 8 3,1938. precipitation Frequency Data Server : POINT PRECIPITATION EN FREQUENCY ESTIMATES FROM NOAA ATLAS 14 California 33.67374 N 116.30206 W 98 feet from "Precipitation- Frequency Atlas of the United States" NOAA Atlas 14, Volume I, Version 3 G.M. Bonnin, D. Todd, B. Lin, T. Parcybok, M.Yekta, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland, 2003 Extracted: Wed Jan 25 2006 Page 1 of 4 33. 67374 N 116.30206 W 98 ft - v 2 3 4 5 6 7 8 910 20 30 40 50 80 100 140 200 300 500 700 1000 Wed Jan 25 14:16:51 2006 Average Recurrence Interval (years) Duration 5 -min i20 -n 48 -hr �- •0 -day -- 10 -min -�- 3 -hr -�- 4 -day �- 4; -day -,� 15 -min + 6-hr -�- 7 -day s 60 -day - - 30 -min a 12 -hr 10 -day - + 60 -min --t- 24 -hr -t— 20 -dau a I ittp: //hdsc.nws.noaa.gov /cgi- bin /hdsc/buildout.perl ?type=pf& series =pd &units =us &statename= SOUTHE... 1/25/2006 IPrecipitation Frequency Data Server 13 12 11 10 9 8 7 6 5 4 3 2 I' 0 Partial duration based Point Precipitation Frequency Estimates Version: 3 33.67374 N 116.30206 W 98 ft L L L L L -JD 71 71 m M '� '� •• •• I S S S t t t t L t N N N M (U N i0 N N N ' N m 117 I I I 07 I I M I I I 1 I I 1 1 � Q' Duration Wed Jan 25 14:16:51 2006 Cu M •t %0 t Average Recurrence Interval ( ears) 2 + 100 - 5 + 19 e- 200 - 9- - 25 )- 500 + 50 _,,__ 1000 -a Confidence Limits - * Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) kQww 60 120 3 6 12 24 48 4 7 10 20 30 45 60 [XF30 ❑ ❑aa ❑ ❑ ❑❑ mm min min hr hr hr hr hr day day day day day day day I 2 0.17 0.26 0.32 0.43 0.54 0.70 0.80 1.07 1.30 1.40 1.54 1.66 1.79 1.88 2.07 2.30 2.60 2.77 0.27 0.41 0.50 0.68 0.84 1.07 1.20 1.58 1.91 2.11 2.36 2.54 2.73 2.89 3.20 3.56 4.00 4.30 10 0.35 0.53 0.66 0.89 I.10 1.37 1.53 1.97 2.37 2.66 3.03 3.26 3.48 3.69 4.07 4.52 5.07 5.44 25 0.48 0.73 0.91 1.22 1.51 1.83 2.02 2.53 3.00 3.44 4.03 4.34 4.58 4.84 5.32 5.88 6.55 7.06 50 0.60 0.91 1.13 1.52 1.88 2.23 2.42 2.99 3.50 4.09 4.90 5.24 5.50 5.82 6.36 7.00 7.74 8.36 100 0.73 1.12 1.39 1.87 2.31 2.70 2.90 3.50 4.05 4.79 5.87 6.27 6.53 6.88 7.48 8.23 9.04 9.75 200 0.89 1.36 1.69 2.27 2.81 3.23 3.44 4.05 4.62 5.55 6.96 7.42 7.66 8.09 8.72 9.57 10.41 11.21 500 1.15 1.75 2.17 2.92 3.61 4.07 4.27 4.91 5.44 6.67 8.64 9.16 9.38 9.87 10.52 11.47 12.38 13.31 1000 1.39 2.11 26113.52 4.35 4.80 4.99 5.63 6.14 7.59 10.10 10.66 10.84 11.38 12.06 13.08 13.96 15.04 tu pper bound of the confidence interval al 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are greater than. se precipitation frequency estimates are based on a partial dur_ ation series ARI is the Average Recurrence Interval. e refer to the d umoed gq(ay�lntayon for more information. NOTE: Formatting prevents estimates near zero to appear as zero. * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) nFu[A]F 15 30 60 120 3 ❑6 12 24 48 4 7 10 20 30 45 60 i mi n min min min hr hr hr hr hr day day day day da da da ;� ❑oaaoc ` 10.11 0.16 0.20 0.27 0.34 0.46 0.53 0.71 0.88 0.98 1.09 1.18 1.28 1.36 1.50 1.68 1.89 2.01 0.17 0.26 0.32 0.42 0.53 0.70 0.80 105 1.29 1.47 1.68 1.80 1.96 2.10 2.31 2.60 2.90 3.11 1� 0.22 0.33 0.41 0.55 0.69 0.89 I.OI 1.31 1.58 1.85 2.15 2.31 2.49 2.67 2.94 3.29 3.67 3.93 -II-1 f �1 1 r-I f-�I -� r� r-�r� r--� r--� EK 1ttp: //hdsc.nws.noaa. gov /cgi- bin/ hdsc /buildout.perl ?type=pf &series=pd &units =us &statename= SOUTHE. Page 2 of 4 1 /25/2()n6 MEN�������s��i� L L L L L -JD 71 71 m M '� '� •• •• I S S S t t t t L t N N N M (U N i0 N N N ' N m 117 I I I 07 I I M I I I 1 I I 1 1 � Q' Duration Wed Jan 25 14:16:51 2006 Cu M •t %0 t Average Recurrence Interval ( ears) 2 + 100 - 5 + 19 e- 200 - 9- - 25 )- 500 + 50 _,,__ 1000 -a Confidence Limits - * Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) kQww 60 120 3 6 12 24 48 4 7 10 20 30 45 60 [XF30 ❑ ❑aa ❑ ❑ ❑❑ mm min min hr hr hr hr hr day day day day day day day I 2 0.17 0.26 0.32 0.43 0.54 0.70 0.80 1.07 1.30 1.40 1.54 1.66 1.79 1.88 2.07 2.30 2.60 2.77 0.27 0.41 0.50 0.68 0.84 1.07 1.20 1.58 1.91 2.11 2.36 2.54 2.73 2.89 3.20 3.56 4.00 4.30 10 0.35 0.53 0.66 0.89 I.10 1.37 1.53 1.97 2.37 2.66 3.03 3.26 3.48 3.69 4.07 4.52 5.07 5.44 25 0.48 0.73 0.91 1.22 1.51 1.83 2.02 2.53 3.00 3.44 4.03 4.34 4.58 4.84 5.32 5.88 6.55 7.06 50 0.60 0.91 1.13 1.52 1.88 2.23 2.42 2.99 3.50 4.09 4.90 5.24 5.50 5.82 6.36 7.00 7.74 8.36 100 0.73 1.12 1.39 1.87 2.31 2.70 2.90 3.50 4.05 4.79 5.87 6.27 6.53 6.88 7.48 8.23 9.04 9.75 200 0.89 1.36 1.69 2.27 2.81 3.23 3.44 4.05 4.62 5.55 6.96 7.42 7.66 8.09 8.72 9.57 10.41 11.21 500 1.15 1.75 2.17 2.92 3.61 4.07 4.27 4.91 5.44 6.67 8.64 9.16 9.38 9.87 10.52 11.47 12.38 13.31 1000 1.39 2.11 26113.52 4.35 4.80 4.99 5.63 6.14 7.59 10.10 10.66 10.84 11.38 12.06 13.08 13.96 15.04 tu pper bound of the confidence interval al 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are greater than. se precipitation frequency estimates are based on a partial dur_ ation series ARI is the Average Recurrence Interval. e refer to the d umoed gq(ay�lntayon for more information. NOTE: Formatting prevents estimates near zero to appear as zero. * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) nFu[A]F 15 30 60 120 3 ❑6 12 24 48 4 7 10 20 30 45 60 i mi n min min min hr hr hr hr hr day day day day da da da ;� ❑oaaoc ` 10.11 0.16 0.20 0.27 0.34 0.46 0.53 0.71 0.88 0.98 1.09 1.18 1.28 1.36 1.50 1.68 1.89 2.01 0.17 0.26 0.32 0.42 0.53 0.70 0.80 105 1.29 1.47 1.68 1.80 1.96 2.10 2.31 2.60 2.90 3.11 1� 0.22 0.33 0.41 0.55 0.69 0.89 I.OI 1.31 1.58 1.85 2.15 2.31 2.49 2.67 2.94 3.29 3.67 3.93 -II-1 f �1 1 r-I f-�I -� r� r-�r� r--� r--� EK 1ttp: //hdsc.nws.noaa. gov /cgi- bin/ hdsc /buildout.perl ?type=pf &series=pd &units =us &statename= SOUTHE. Page 2 of 4 1 /25/2()n6 Precipitation Frequency Data Server 25 11030 11045 11056 JL75J0.93J 1.18 1 1.33 1.67 1.99 2.38 2.83 3.03 50 0.36 0.56 0.69 0.93 1.15 1.42 1.58 1.95 2.31 2.80 3.39 3.63 100 0.44 0.67 0.83 1.12 1.38 1.69 1.85 2.25 2.62 3.25 4.00 4.26 200 0.52 0.80 0.99 1.33 1.64 1.98 2.15 2.56 2.96 3.71 4.67 4.95 500 0.65 0.99 1.23 1.65 2.04 2.40 2.56 2.99 3.40 4.35 5.63 5.95 1000 0.76 1.15 1.43 1.92 2.38 2.75 2.91 3.34 3.74 4.87 6.43 6.78 The lower bound of the confidence intery al at 90% confidence level is the value which 5% of the simulated quantile values for a given These precipitation frequency estimates are based on a oartial durafion maxima 5edes, ARI is the Average Recurrence Interval. Please refer to the documentation for more information. NOTE: Formatting prevents estimates near zero to appear as zero. Maps - 3.23 3.48 3.81 3.83 4.13 4.51 4.49 4.84 5.25 5.17 5.58 6.04 6.14 6.64 7.12 6.93 7.53 8.00 requency are less than. w 116..3 -W ItherMaps /Photographs - 116_ ?"W 71115.05 10.08 -tor H ary Area )a I Park Park 1 1�J8 mi solutk on Page 3 of 4 LUSGS digital orthophoto quadrangle (DOQ) covering this location from TerraServer; USGS Aerial Photograph may also be available m this site. A DOQ is a computer - generated image of an aerial photograph in which image displacement caused by terrain relief and camera tilts has been emoved. It combines the image characteristics of a photograph with the geometric qualities of a map. Visit the National Digital Orthophoto Program (NDOP) imore information. atershed/Stream Flow Information - d the Watershed for this location using the U.S. Environmental Protection Agency's site. ittp: //hdsc.nws.noaa.gov /cgi- bin / hdsc /buildout.perl ?type=pf &series=pd &units= us &statename= SOUTHE__. 1/95/900,S Precipitation Frequency Data Server Climate Data Sources - F recipitation frequency results are based on data from a variety of sources, but largely NCDC. The following links provide general information bout observing sites in the area, regardless of if their data was used in this study. For detailed information about the stations used in this study, please refer to our documentation. Page 4 of 4 sing the National Climatic Data Center's (NCDC) station search engine, locate other climate stations within: nu mites +� �; �� ...OR...s��1deg.� of this location (33.67374/ - 116.30206). Digital ASCII data can be obtained directly from NCDC. ind Natural Resources Conservation Service (NRCS) SNOTEL (SNOwpack TELemetry) stations by visiting the Western Regional Climate C enter's state specific SNOTEL station maps. Hydrometeorological Design Studies Center DOGNOAMNational Weather Service [25 East -West Highway ver Spring, MD 20910 01) 713 -1669 Questions ?: HDSC Questions a noaa.gov I , 1 attp: //hdsc.nws.noaa.gov /cgi- bin /hdsc/buildout.perl? type =pf& series =pd &units =us &statename= SOUTHE... 1/25/2006 RATIONAL METHOD CALCULATION FORM PROJECT: ARNOLD PALMER JOB NO: 06001 DATE: 01/30/06 PREPARED BY ESSI SHAHANDEH FEQUENCY: 10YR CLIENT: BY: AMG DRAINAGE AREA SOIL 8' 1 I C Q E Q SLOPE SECTION V L T E T REMARKS DEV. TYPE ACRES IN /HR CFS CFS % FPS FT MIN A 90 -B 0.29 3.41 0.89 0.88 7.40 INITIAL AREA L =197' H =1.0' 0.88 SHEET 1 PIPE VALUES 18 "= 0.00 24 0.00 30 "= 0.00 36 "= 0.00 42 "= 0.00 48"= 0.00 BASE C VALUES LFp C =0.9( Ai+ I Ap) 50 %TYPE A: 0.802 50 %TYPE B: 0.833 75 %TYPE A: 0.851 75 %TYPE B: 0.866 90 %TYPE A: 0.880 90 %TYPE B: 0.887 INTENSITY IN /HR (0.58 SLOPE) PER PLATE D-4.1 (CATH.CITY) 10VR lnnvo 1 2 4 6 7 8 iU ii 12 13 t? 15 IS 'i7 i3 19 20 21 22 23 24 25 26 27 28 29 30 31 32 3:i 34 35 35 37 38 N 40 41 42. 43 .14 45 4; 47 48 4 a THIS CHART IS BASED ON THE STREET FLOWING BOTH SIDES t 2 3 5 6 7 8 9 FLOW IN STREET PER PI ATP n_7 S Q 4.14 6.76 6 3.73 6.08 7 L 3.41 5.56 8 3.15 5.15 95 2.95 4.81 10 2.77 4.52 11 2.62 4.28 12 2.49 4.07 13 2.38 3.88 14 2.28 3.72 15 2.19 3.58 16 2.11 3.44 17 2.04 3.32 18 1.97 3.22 19 1.91 3.12 20 1.85 3.03 22 1.75 2.86 24 1.67 2.72 26 1.59 2.60 28 1.52 2.49 30 1.46 2.39 32 1.41 2.30 34 1.36 2.22 36 1.32 2.15 38 1.28 2.09 40 1.24 2.02 45 1.16 1.89 50 1.09 1.78 55 1.03 1.68 60 0.98 1.60 65 0.94 1.53 70 0.90 1.46 75 0.86 1.41 80 0.83 1.35 85 0.80 1.31 1 2 4 6 7 8 iU ii 12 13 t? 15 IS 'i7 i3 19 20 21 22 23 24 25 26 27 28 29 30 31 32 3:i 34 35 35 37 38 N 40 41 42. 43 .14 45 4; 47 48 4 a THIS CHART IS BASED ON THE STREET FLOWING BOTH SIDES t 2 3 5 6 7 8 9 FLOW IN STREET PER PI ATP n_7 S Q 0.40 1 0.50 1 0.60 1 0.70 1 1.00 v� 1 io) 1 2.00 1 3.00 4.00 5.00 2 1.55 1.73 1.85 1.95 2.20 2.90 3.45 3.90 4.30 3 1.65 1.90 2.00 2.05 2.38 3.08 3.61 4.07 4.47 4 1.87 2.03 2.15 2.20 2.56 3.25 3.76 4.23 4.65 5 1.92 2.12 2.30 2.35 2.74 143 3.91 4.40 4.82 6 1.95 2.20 2.34 2.55 2.92 3.60 4.07 4.56 4.99 7 2.00 2.22 2.37 2.57 3.10 3.78 4.22 4.73 5.17 8 2.01 2.24 2.41 2.59 3.11 3.95 4.38 4.89 5.34 9 2.02 2.26 2.44 2.61 3.12 4.13 4.53 5.06 5.51 10 2.03 2.28 2.48 2.63 3.13 4.30 4.69 5.22 5.69 11 2.05 2.29 2.49 2.65 3.14 4.32 4.84 5.39 5.86 12 2.07 2.30 2.50 2.67 3.15 4.33 5.00 5.55 6.03 13 2.09 2.31 2.51 2.69 3.16 4.35 5.15 5.72 6.21 14 2.11 2.32 2.52 2.70 3.19 4.3611, 5.17 5.88 6.38 15 2.12 2.33 2.53 2.72 3.21 4.38 1 5.20 6.05 6.55 16 2.13 2.35 2.54 2.74 3.23 4.39 5.22 6.06 6.73 17 2.15 2.37 2.55 2.76 3.26 4.41 5.24 6.07 6.90 18 2.18 2.39 2.56 2.78 3.28 4.42 5.27 6.08 6.91 19 2.20 2.41 2.58 2.80 3.31 4.44 5.29 6.08 g,g2 20 2.23 2.44 2.60 2.82 3.33 4.45 5.31 6.09 6.93 21 2.26 2.48 2.63 2.84 3.36 4.47 5.33 6.10 6.94 22 2.30 2.52 2.66 2.86 3.38 4.48 5.36 6.11 6.95 23 2.35 2.56 2.69 2.88 3.41 4.50 5.38 6.12 6.96 24 2.40 2.60 2.72 2.90 3.43 4.51 5.40 6.13 6.96 25 2.45 2.64 2.75 2.92 3.46 4.53 5.43 6.14 6.97 26 2.50 2.68 2.78 2.94 3.48 4.54 5.45 6.14 6.98 27 2.55 2.72 2.81 2.96 3.50 4.56 5.47 6.15 6.99 28 2.60 2.76 2.84 2.98 3.53 4.57 5.50 6.16 7.00 29 2.65 2.80 2.87 3.00 3.55 4.59 5.52 6.17 7.01 30 2.70 2.84 2.90 3.02 3.58 4.60 5,54 6.18 7 02 31 2.73 2.87 2.93 3.06 3.60 4.62 5.56 6.19 7.03 32 2.75 2.89 2.96 3,10 3.63 4.64 5.59 6.20 7.04 33 2.78 2.92 2.99 3.13 3.65 4.65 5.61 6.20 7.05 34 2.80 2.94 3.02 3.17 3.68 4.68 5.63 6.21 7.06 35 2.83 2.97 3.05 3.21 3.70 4.70 5.66 6.22 7.06 36 2.85 2.99 3.08 3.25 3.73 4.73 5.68 6.23 7,07 37 2.88 3.02 3.11 3.29 3.77 4.76 5.70 6.24 7.08 38 2.90 3.04 3.14 3.32 3.80 4.78 5.72 6.25 7.09 39 2.93 3.07 3.17 3.36 3.83 4.81 5.75 6.26 '1 40 2.95 3.09 3.20 3.40 3.87 4.84 5.77 6,26 711 41 2.98 3.12 3.23 3.44 3.90 4.86 5.79 6.27 7.12 42 3.00 3.15 3.26 3.48 3.93 4.88 5.82 6.28 7.13 43 3.03 3.18 3.29 3.52 3.97 4.92 5.84 6.29 7,14 44 3.05 3.21 3.32 3.56 4.00 4.94 5.56 6.30 7,15 45 3.08 3.25 3.35 3.60 4.03 4.97 5.89 6.31 7.16 46 3.10 3.28 3.39 3.64 4.07 4.99 5.91 6.32 7,1g 47 3.13 3.31 3.43 3.68 4.10 5.02 6.93 6.32 7,17 48 3.15 3.34 3.47 3.72 4.13 5,05 5.95 6.33 7.18 49 3.18 3.37 3.52 3.76 4.17 5.07 5.88 3.64 7,1g 50 3.20 3.40 1 .60 3.80 4.20 5.10 6.00 6.35 7 �n RATIONAL METHOD CALCULATION FORM PROJECT: ARNOLD PALMER JOB NO: 06001 DATE: 01130/06 PREPARED BY ESSI SHAHANDEH FEQUENCY: 100YR CLIENT: BY: AMG DRAINAGE AREA SOIL & A I C A Q £ 11 SLOPE SECTION V L T £ T REMARKS DEV. TYPE ACRES IN /HR CFS CFS % FPS FT MIN A 90 -B 0.29 5.56 0.89 1.44 7.40 INITIAL AREA L =197' H =1.0' 1.44 SHEET 1 PIPE VALUES 4.14 18"= 0.00 24 ..= 0.00 30 ..= 0.00 36"= 0.00 42 ..= 0.00 48 ..= 0.00 BASE C VALUES 10 I-FR C =0.9( AI+ I Ap) 50 %TYPE A: 0.840 4.28 50 %TYPE B: 0.859 2.49 75 %TYPE A: 0.870 13 75 %TYPE B: 0.879 3.88 90 %TYPE A: 0.888 2.28 90 %TYPE B: 0.892 15 INTENSITY IN /HR (0.58 SLOPE) PER PLATE D-4.1 (CATH.CITY) invR Innvo 5 4.14 6.76 6 3.73 6.08 7 3.41 5.56 8 3.15 5.15 9 2.95 4.81 10 2.77 4.52 11 2.62 4.28 12 2.49 4.07 13 2.38 3.88 14 2.28 3.72 15 2.19 3.58 16 2.11 3.44 17 2.04 3.32 18 1.97 3.22 19 1.91 3.12 20 1.85 3.03 22 1.75 2.86 24 1.67 2.72 26 1.59 2.60 28 1.52 2.49 30 1.46 2.39 32 1.41 2.30 34 1.36 2.22 36 1.32 2.15 38 1.28 2.09 40 1.24 2.02 45 1.16 1.89 50 1.09 1.78 55 1.03 1.68 60 0.98 1.60 65 0.94 1.53 70 0.90 1.46 75 0.86 1.41 80 0.83 1.35 85 0.80 1.31 .1 2 3 4 5 H 7 8 y 1'J 1i 12 i3 i4 15 15 17 18 19 20 21 22 23 2.> 25 27 28 29 30 31 32 3:3 34 35 36 37 38 39 40 41 42 43 4; 46 4; .1 is THIS CHART IS BASED ON THE STREET FLOWING BOTH SIDES 1 2 FLOW IN RTRFFT PPP PI ATR n -7 S ncwnr ie Q 0.40 0.50 0.60 0.70 1.00 2.00 3.00 4.00 5.00 2 1.55 1.73 1.85 1.95 2.20 2.90 3.45 3.90 4.30 3 1.65 1.90 2.00 2.05 2.38 3.08 3.61 4.07 4.47 4 1.87 2.03 2.15 2.20 2.56 3.25 3.76 4.23 4.65 5 1.92 2.12 2.30 2.35 2.74 3.43 3.91 4.40 4.82 6 1.95 2.20 2.34 2.55 2.92 3.60 4.07 4.56 4.99 7 2.00 2.22 2.37 2.57 3.10 1 3.78 4.22 4.73 5.17 8 2.01 2.24 2.41 2.59 3.11 1 3.95 4.38 4.89 5.34 9 2.02 2.26 2.44 2.61 3.12 4.13 4.53 5.06 5.51 10 2.03 2.28 2.48 2.63 3.13 4.30 4.69 1 5.22 5.69 11 2.05 2.29 2.49 2.65 3.14 402 4.84 5.39 5.86 12 2.07 2.30 2.50 2.67 3.15 4.33 5.00 5.55 1 6.03 13 2.09 2.31 2.51 2.69 3.16 4.35 5.15 5.72 6.21 14 2.11 2.32 2.52 2.70 3.19 4.36 5.17 5.88 6.38 15 2.12 2.33 2.53 2.72 3.21 4.38 5.20 6.05 6.55 16 2.13 2.35 2.54 2.74 3.23 4.39 5.22 6.06 6.73 17 2.15 2.37 2.55 2.76 3.26 4.41 5.24 6.07 6.90 18 2.1 8 2.39 2.56 2.78 3.28 4.42 5.27 6.08 6.91 19 2.20 2.41 2.58 2.80 3.31 4.44 5.29 6.08 6.92 20 2.23 2.44 2.60 2.82 3.33 4.45 5.31 6.09 6.93 21 2.26 2.48 2.63 2.84 3.36 4.47 5.33 T 6.10 6.94 22 2.30 2.52 2.66 2.86 3.38 4.48 5.36 6.11 6.95 23 2.35 2.56 2.69 2.88 3.41 4.50 5.38 6.12 6.96 24 2.40 2.60 2.72 2.90 3.43 4.51 5.40 6.13 6.96 25 2.45 2.64 2.75 2.92 3.46 1 4.53 5.43 6.14 6.97 26 2.50 2.68 2.78 2.94 3.48 1 4.54 5.45 6.14 6.98 27 2.55 2.72 2.81 2.96 3.50 4.56 5.47 6.15 6.99 28 2.60 2.76 2.84 2.98 3.53 4.57 5.50 6.16 7.00 29 2.65 2.80 2.87 3.00 3.55 4.59 5.52 6.17 7.01 30 2.70 2.84 2.90 3.02 3.58 4.60 5.54 6.18 7.02 31 2.73 2.87 2.93 3.06 3.60 4.62 5.56 6.19 7.03 32 2.75 2.89 2.96 3.10 3.63 4.64 5.59 6.20 7.04 33 2.78 2.92 2.99 3.13 3.65 4.65 5.61 6.20 7.05 34 2.80 2.94 3.02 3.17 3.68 4.68 5.63 1 6.21 7.06 35 2.83 2.97 3.05 3.21 3.70 4.70 5.66 6.22 7.06 36 2.85 2.99 3.08 3.25 3.73 4.73 5.68 6.23 7.07 37 2.88 3.02 3.11 3.29 3.77 4.76 5.70 6.24 7.08 38 2.90 3.04 3.14 3.32 3.80 4.78 5.72 6.25 7.09 39 2.93 3.07 3.17 3.36 3.83 4.81 5.75 6.26 7.10 40 2.95 3.09 3.20 3.40 3.87 4.84 5.77 6.26 7.11 41 2.98 3.12 1 3.23 3.44 3.90 4.86 5.79 6.27 7.12 42 3.00 3.15 3.26 3.48 3.93 4.89 5.82 6.28 7.13 43 3.03 3.18 3.29 3.52 3.97 4.92 5.84 6.29 7.14 44 3.05 3.21 3.32 3.56 4.00 4.94 5.56 6.30 7.15 45 3.08 3.25 3.35 3.60 1 4.03 4.97 5.89 6.31 7.16 46 3.10 3.28 3.39 3.64 4.07 4.99 5.91 6.32 7.16 47 3.13 3.31 3.43 3.68 4.10 5.02 5.93 6.32 7.17 46 3.15 3.34 3.47 3.72 4.13 5.05 5.95 6.33 7.18 49 3.18 3.37 3.52 3.76 4.17 5.07 5.98 3.64 7.19 50 3.20 3.40 3.60 3.80 4.20 5.10 6.00 6.35 7.20 PLATE D -3 TC' LIMITATIONS: L 100 1. Maximum length = 1000' TC 1000 90 2. Maximum area = 10 Acres 5 900 80 a 800 70 H U 500 6 X 0-400 °►� 300 a 700 60 ° 200 7-- C 0 N a E 100 aci 600 0 50 0— 60 8 0' 0 a��i p E c °' 0-30 20 9 0 500 _ ,) a► o 35 d o U c a i0 8 E d 0. K ; A 6 0 400 �° 30 Undeveloped i 0 �� I I o1 Good Cover 2 / 12 d 350 25 Undeveloped _ / 1.o L Fair Cover :6 / 14 300 B Undeveloped 0 3 1 15 9 Ea'6r Cover co V l2 16 o — 18 17 Single Family / > 50 °' 17 J 250 F- (I/4 Acre) 18 1w s 0 15 14 Commercial 0 19 20 ~ m or 00 0 13 (Pav (D c J c 12 � / o 0 II 25 c C ° / KEY 150 9 L—H Tc —K —Tc' c F= 30 EXAMPLE. E 7 (1) L=550', H =5.0; K = Single Family(1 /4 Ac.) 35 E_ Development , Tc = 12.6 min. 6 (2) L =550', H =5.0', K = Commercial 100 Development , Tc = 9.7 min. 40 5 4 Reference: Bibliography item No. 35. R C FC 81 W C D TIME OF CONCENTRATION HYDROLOGY 1\AANUAL FOR INITIAL SUBAREA PLATE D -3 1.0 12 11 10.0 - 0.9 - 8.0- 10 - 0.8-% 6.0= ' 4.0- 0.7 g 3.0- 0.6-- .6 7.5 2.0- 7 ' 6.5 0.5--6 1.0- 5.5 0.8- ' 0.6- 5 0.4 i ' 4.5 z / - t5 z / 0.3- ' 4 t 0.2- 0.3 3.5 w - O z 0 / w /m 0.1 a_ ' 0.08 o 0.25 3 LA- O 0.06- �E - ' = 2.5 = 04- 0.2 0.03- t 0.02- -2 0.15 0.01- La 4 L- QtOOs om 1.5 LO PONDING 01 1.2 h (OPENING HEIGHT) LOCAL DEPRESSION (a) H (DEPTH OF FLOW) ' BASED ON THE BUREAU OF PUBLIC ROADS DMSION TWO , WASH., D.C. 1073.03 5.0 4.0 3.0 a N U tz 2.0 o ? 0 = Ld w z W EL O r 1.5 W w i v J LA- o a N U Z d z GFSI�/ O v cS = Ld w z W EL O o LL- 0 z z W W o Q J LA- o ix 0 3 O o: W CL o_ W U Q o V' O a U 0 KiRr.] 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.25 0.2 0.15 0.1 NOMOGRAPH FOR CAPACITY OF CURB OPENING INLETS AT LOW POINTS CATCH BASIN - STORM DRAIN DESIGN PREPARED BY ESSI SHAHANDEH DATE: 2/9/2006 JOB #: 06001 PROJECT: ARNOLD PALMER OFFICES BY: AMG PIPE BASIN STORM DRAIN LINE: "A" DIA.(IN) 0100(CFS) WS100 OUTLET DESIGN (OPEN) 18 1.44 45.00 VELOCITY IN 18 " PIPE Q= 1.44 0.81 PER SEC. HV= V2 /2G= 0.010 A= 1.77 V =Q /A WS100 IN BASIN STORM DRAIN LINE DESIGN LENGTH OF PIPE(d) 16.50 MANNING "S INDEX(n) 0.012 TYPE OF PIPE CPP(N -12) DESIGN FOR CATCH BASIN NO. 1 PROP. WIDTH OF OPENING (W)(FT) CURB HEIGHT (IN) DEPTH OF DEPRESSION (IN) DEPTH OF FLOW AT OPENING (H)(FT) HEIGHT OF OPENING (h)(IN) 0100 TO OPENING (CFS) TC AT OPENING Sf =[ Q n ] 2 [d 8/3(K')] Hf =L(Sf) 4.00 H /h= 0.12 6.00 Q /L= 2.50 4.00 0.10 10.00 1.44 46.33 VS HGL K' =0.463 Sf =[ 0.017280 12= 0.000160 [ 1.366925 ] Hf= HGL AT U.S.END= 1.1 Hv= 100YR WS IN CB= (PONDED TO TC) Q= 1.44 0.58 FOOT WIDE OPENING (MIN) 2.50 USE W(MIN)= 4.00 OK (Q /L) 45.01 OK HGL100 SHEET 1 OF 1 45.000 0.0026 45.003 0.011 45.014 STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 " /HR TRIBUTARY RAINFALL FOR 100 YEAR 3 HOUR STORM (SEE PLATE E -5.6)= 2.37 "73HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 1 2.6 0.062 0.814 0.051 30.4 0.0 10.2 30.4 0.0 0.000 2 2.6 0.062 0.814 0.051 30.4 0.0 10.2 30.4 0.0 0.000 3 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 4 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 5 3.3 0.078 0.815 0.064 38.6 0.0 10.3 38.6 0.0 0.000 6 3.4 0.081 0.815 0.066 39.8 0.0 10.3 39.8 0.0 0.000 7 4.4 0.104 0.816 0.086 51.6 0.0 10.3 51.6 0.0 0.000 8 4.2 0.100 0.816 0.082 49.2 0.0 10.3 49.2 0.0 0.000 9 5.3 0.126 0.818 0.104 62.2 0.0 10.4 62.2 0.0 0.000 10 5.1 0.121 0.817 0.100 59.9 0.0 10.4 59.9 0.0 0.000 11 6.4 0.152 0.819 0.125 75.3 0.0 10.4 75.3 0.0 0.000 12 5.9 0.140 0.818 0.116 69.3 0.0 10.4 69.3 0.0 0.000 13 7.3 0.173 0.820 0.143 86.0 0.0 10.5 86.0 0.0 0.000 14 8.5 0.201 0.822 0.167 100.4 0.0 10.61 100.4 0.0 0.000 15 14.1 0.334 0.830 0.280 168.1 0.0 10.9 168.1 0.0 0.000 16 14.1 0.334 0.830 0.280 168.1 0.0 10.9 168.1 0.0 0.000 17 3.8 0.090 0.815 0.074 44.5 0.0 10.3 44.5 0.0 0.000 18 2.4 0.057 0.813 0.047 28.0 0.0 10.2 28.0 0.0 0.000 1179.0 SHEET 1 OF 2 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS D= 4' -5' D= 3'-4' DEPTH AREA(5F) UWI-.AHEA(SF) AVG.VOL/FT(CF A000M.VOL(CF) IMP AREA IN BASIN 0.000 , 3 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 " D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =O.OQ' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 1 0.000 2 0.000 , 3 0.000 4 0.000 5 0.000 6 0.000 7 0.000 8 0.000 9 0.000 10 0.000 11 0.000 12 0.000 13 0.000 14 0.000 15 0.000 16 0.000 17 0.000 18 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.017 0.000 0.018 0.000 0.023 0.000 0.022 0.000 0.028 0.000 0.027 0.000 0.034 0.000 0.031 0.000 0.039 0.000 0.045 0.000 0.076 0.000 0.076 0.000 0.020 0.000 0.013 YY.0. ARCM AUJ.AKCA VV-N- CLt V. 4 0.01 1472.86 1472.86 0.01 4 0.01 1472.86 1472.86 0.01 FLAT 7 0.02 1478.51 1478.51 0.02 INC 7 0.02 1478.51 1478.51 0.02 FLAT 0.02 1478.51 1478.51 0.02 FLAT 0.02 .1479.32 1479.32 0.02 INC 0.02 1487.41 1487.41 0.02 PEAK 0.02 1485.79 1485.79 0.02 DEC 0.03 1494.73 1494.73 0.03 PEAK 0.03 1493.10 1493.10 0.03 DEC 0.03 1503.69 1503.69 0.03 PEAK 0.03 1499.61 1499.61 0.03 DEC 0.04 1511.05 1511.05 0.04 INC 0.05 1520.90 1520.90 0.05 INC 0.08 1567.41 1567.41 0.08 INC 0.08 1567.41 1567.41 0.08 FLAT 0.02 1482.55 1482.55 0.02 DEC 0.01 1471.251 1471.251 0.01 DEC SHEET 2 OF 2 "}fi 'Lra .,, =Kum Tr r'g�' u� }+ M d j! di1X Q iiiii�iii���i���i w iiiiiiiii�iiiiiii mi� iii wimmmiiiiii�iiii� . imiiimmmmmmmomim� o0 miiimmimmmmiii mommm.i...i...0 - -l' mimimmimiimimiiim 1 /. immmm ~ k. S' !,.:.'S'ayY� ,3' :i`3L..Fcu'$.. -d rC`. , t. -, .L ♦ "i s lk u YY.0. ARCM AUJ.AKCA VV-N- CLt V. 4 0.01 1472.86 1472.86 0.01 4 0.01 1472.86 1472.86 0.01 FLAT 7 0.02 1478.51 1478.51 0.02 INC 7 0.02 1478.51 1478.51 0.02 FLAT 0.02 1478.51 1478.51 0.02 FLAT 0.02 .1479.32 1479.32 0.02 INC 0.02 1487.41 1487.41 0.02 PEAK 0.02 1485.79 1485.79 0.02 DEC 0.03 1494.73 1494.73 0.03 PEAK 0.03 1493.10 1493.10 0.03 DEC 0.03 1503.69 1503.69 0.03 PEAK 0.03 1499.61 1499.61 0.03 DEC 0.04 1511.05 1511.05 0.04 INC 0.05 1520.90 1520.90 0.05 INC 0.08 1567.41 1567.41 0.08 INC 0.08 1567.41 1567.41 0.08 FLAT 0.02 1482.55 1482.55 0.02 DEC 0.01 1471.251 1471.251 0.01 DEC SHEET 2 OF 2 SHEET 2 OF 2 STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 "/HR TRIBUTARY RAINFALL FOR 100 YEAR 6 HOUR STORM (SEE PLATE E -5.6)= 2.86 "76HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 1 1.7 0.049 0.813 0.040 35.9 0.0 15.4 35.9 0.0 0.000 2 1.9 0.054 0.813 0.045 40.2 0.0 15.4 40.2 0.0 0.000 3 2.1 0.060 0.814 0.049 44.4 0.0 15.4 44.4 0.0 0.000 4 2.2 0.063 0.814 0.052 46.5 0.0 15.5 46.5 0.0 0.000 5 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 6 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 7 2.4 0.069 0.814 0.056 50.8 0.0 15.5 50.8 0.0 0.000 8 2.5 0.072 0.814 0.059 52.9 0.0 15.5 52.9 0.0 0.000 9 2.6 0.074 0.814 0.061 55.1 0.0 15.5 55.1 0.0 0.000 10 2.7 0.077 0.815 0.064 57.2 0.0 15.5 57.2 0.0 0.000 11 2.8 0.080 0.815 0.066 59.3 0.0 15.5 59.3 0.0 0.000 12 3.0 0.086 0.815 0.071 63.6 0.0 15.6 63.6 0.0 0.000 13 3.2 0.092 0.815 0.075 67.8 0.0 15.6 67.8 0.0 0.000 14 3.6 0.103 0.816 0.085 76.4 0.0 15.7 76.4 0.0 0.000 15 4.3 0.123 0.817 0.102 91.4 0.0 15.8 91.4 0.0 0.000 16 4.7 0.134 0.818 0.111 100.0 0.0 15.8 100.0 0.0 0.000 17 5.4 0.154 0.819 0.128 115.0 0.0 15.9 115.0 0.0 0.000 18 6.2 0.177 0.821 0.147 132.3 0.0 16.1 132.3 0.0 0.000 19 6.9 0.197 0.822 0.164 147.4 0.0 16.2 147.4 0.0 0.000 20 7.5 0.215 0.823 0.178 160.4 0.0 16.3 160.4 0.0 0.000 21 10.6 0.303 0.828 0.254 228.2 0.0 16.8 228.2 0.0 0.000 22 14.5 0.415 0.835 0.350 314.7 0.0 17.4 314.7 0.01 0.000 23 3.4 0.097 0.816 0.080 72.1 0.0 15.6 72.1 0.0 0.000 24 1.0 0.029 0.812 0.023 21.1 0.0 15.3 21.1 0.0 0.000 2134.300 SHEET 1 OF 2 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS D= 4' -5' D= 3'-4' :IN DEPTH AREA(Gr) DIFF.AREA(SF) AVC;.Vi �L1F- I (CF. ACCUM:VOL(cr) IMP AREA IN BASIN 3 0.000 4 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.0C D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 1 0.000 2 0.000 3 0.000 4 0.000 5 0.000 6 0.000 7 0.000 8 0.000 9 0.000 10 0.000 11 0.000 12 0.000 13 0.000 14 0.000 15 0.000 16 0.000 17 0.000 18 0.000 19 0.000 20 0.000 21 0.000 22 0.000 23 0.000 24 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 BY: AG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES D= 1' -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH 0.000 0.01 0.000 0.01 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.02 0.000 0.031 0.000 0.03 0.000 0.041 0.000 0.045 0.000 0.052 0.000 0.060 0.000 0.067 0.000 0.073 0.000 0.103 0.000 0.142 0.000 0.033 0.000 0.010 6 0.02 1 1476.67 1 1476.67 0 0.02 8 0.02 1 1479.58 1 1479.58 0 0:02 I INC 0 0.02 1 1482.50 1 1482.50 0 0.02 I INC ....................... a o : '..... ■.NONE .......... ....................... ......................." tee. :e - .......EWEN .......... ....................... .e ......ME EN............ e e MEN � r , 6 0.02 1 1476.67 1 1476.67 0 0.02 8 0.02 1 1479.58 1 1479.58 0 0:02 I INC 0 0.02 1 1482.50 1 1482.50 0 0.02 I INC SHEET 2 OF 2 STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION BASIN PREPARED BY ESSI SHAHANDEH BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 "/HR TRIBUTARY RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= 4.00 "724HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 1 0.2 0.008 0.810 0.007 23.6 0.0 15.3 23.6 0.0 0.000 2 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 3 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 4 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 5 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 6 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 7 0.3 0.012 0.811 0.010 35.4 0.0 15.4 35.4 0.0 0.000 8 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 9 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 10 0.4 0.016 0.811 0.013 47.2 0.0 15.5 47.2 0.0 0.000 11 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 12 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 13" 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 14 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 15 0.5 0.020 0.811 0.016 59.0 0.0 15.5 59.0 0.0 0.000 16 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 17 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 18 0.7 0.028 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 19 0.7 0.028 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 20 0.8 0.032 0.812 0.026 94.5 0.0 15.8 94.5 0.0 0.000 21 0.6 0.024 0.811 0.020 70.8 0.0 15.6 70.8 0.0 0.000 22 0.7 0.028 0.812 0.023 82.6 0.0 15.7 82.6 0.0 0.000 23 0.8 0.0321 0.812 0.0261 94.51 0.01 15.81 94.5 0.0 0.000 24 0.8 0.0321 0.8121 0,026F 94.51 0.01 15.81 94.5 0.0 0.000 SHEET 1 OF 9 BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE _ RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= PERIOD ACCUM. (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) 0.50 " /HR TRIBUTARY 4.00 "724HR AREA= 1.01 ACRES ADDITIONAL ADDITIONAL ADJUSTED AC -FT FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 25 0.9 0.036 0.812 0.030 106.3 0.0 15.9 106.3 0.0 0.000 26 0.9 0.036 0.812 0.030 106.3 0.0 15.9 106.3 0.0 0.000 27 1.0 0.040 0.812 0.033 118.2 0.0 16.0 118.2 0.0 0.000 28 1.0 0.040 0.812 0.033 118.2 0.0 16.0 118.2 0.0 0.000 29 1.0 0.040 0.812 0.033 118.2 0.0 16.0 118.2 0.0 0.000 30 1.1 0.044 0.813 0.036 130.0 0.0 16.1 130.0 0.0 0.000 31 1.2 0.048 0.813 0.039 141.9 0.0 16.1 141.9 0.0 0.000 32 1.3 0.052 0.813 0.043 153.7 0.0 16.2 153.7 0.0 0.000 33 1.5 0.060 0.814 0.049 177.5 0.0 16.4 177.5 0.0 0.000 34 1.5 0.060 0.814 0.049 177.5 0.0 16.4 177.5 0.0 0.000 35 1.6 0.064 0.814 0.053 189.4 0.0 16.5 189.4 0.0 0.000 36 1.7 0.068 0.814 0.056 201.3 0.0 16.6 201.3 0.0 0.000 37 1.9 0.076 0.815 0.063 225.1 0.0 16.7 153.0 55.4 0.001 38 2.0 0.080 0.815 0.066 292.4 0.0 17.2 18.9 256.3 0.006 39 2.1 0.084 0.815 0.069 505.2 0.0 18.7 18.9 467.5 0.011 40 2.2 0.088 0.815 0.072 728.4 0.0 20.3 18.9 689.2 0.016 41 1.5 0.060 0.814 0.049 866.7 0.0 21.3 18.9 826.4 0.019 42 1.5 0.060 0.814 0.049 1003.9 0.0 22.3 18.9 962.7 0.022 43 2.0 0.080 0.815 0.066 1199.7 0.0 23.7 18.9 1157.1 0.027 44 2.0 0.080 0.815 0.066 1394.1 0.0 25.1 18.9 1350.2 0.031 45 1.9 0.076 0.815 0.063 1575.2 0.0 26.4 18.9 1530.0 0.035 46 1.9 0.076 0.815 0.063 1755.0 0.0 27.7 18.9 1708.5 0.039 47 1.7 0.068 0.814 0.056 1909.81 0.01 28.81 18.9 1862.1 0.043 48 1.8 0.072 0.814 0.059 2075.2 0.0 30.0 18.9 2026.4 0.047 SHEET 2 OF 9 BY: AMG DATE: 01/30/06 JOB # 06001 REF: ARNOLD PALMER OFFICES SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE _ RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= PERIOD ACCUM. (1/4 HR) % I(loo) C (AVG) Q (CFS) VOL(CF) 0.50 " /HR TRIBUTARY 4.00 "724HR AREA= 1.01 ACRES ADDITIONAL ADDITIONAL ADJUSTED AC -FT FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 49 2.5 0.100 0.816 0.082 2323.1 0.0 31.5 18.9 2272.7 0.052 50 2.6 0.104 0.816 0.086 2581.4 0.0 32.7 18.9 2529.7 0.058 51 2.8 0.112 0.817 0.092 2862.3 0.0 34.1 18.9 2809.3 0.064 52 2.9 0.116 0.817 0.096 3153.8 0.0 35.6 18.9 3099.4 0.071 53 3.4 0.136 0.818 0.112 3504.0 0.0 37.3 18.9 3447.8 0.079 54 3.4 0.136 0.818 0.112 3852.4 0.0 39.0 18.9 3794.5 0.087 55 2.3 0.092 0.816 0.076 4067.3 0.0 40.0 18.9 4008.4 0.092 56 2.3 0.092 0.816 0.076 4281.2 0.0 41.1 18.9 4221.2 0.097 57 2.7 0.108 0.816 0.089 4541.9 0.0 42.3 18.9 4480.6 0.103 58 2.6 0.104 0.816 0.086 4789.3 0.0 43.6 18.9 4726.8 0.109 59 2.6 0.104 0.816 0.086 5035.5 0.0 44.8 18.9 4971.8 0.114 60 2.5 0.100 0.816 0.082 5268.5 0.0 45.9 18.9 5203.7 0.119 61 2.4 0.096 0.816 0.079 5488.5 0.0 47.0 18.9 5422.6 0.124 62 2.3 0.092 0.816 0.076 5695.4 0.0 48.0 18.9 5628.5 0.129 63 1.9 0.076 0.815 0.063 5853.6 0.0 48.8 18.9 5785.9 0.133 64 1.9 0.076 0.815 0.063 6011.0 0.0 49.5 18.9 5942.6 0.136 65 0.4 0.016 0.811 0.013 5989.8 0.0 49.4 18.9 5921.5 0.136 66 0.4 0.016 0.811 0.013 5968.6 0.0 49.3 18.9 5900.4 0.135 67 0.3 0.012 0.811 0.010 5935.8 0.0 49.2 18.9 5867.7 0.135 68 0.3 0.012 0.811 0.010 5903.1 0.0 49.0 18.9 5835.2 0.134 69 0.5 0.020 0.811 0.016 5894.2 0.0 49.0 18.9 5826.3 0,134 70 0.5 0.020 0.811 0.016 5885.3 0.0 48.9 18.9 5817.5 0.134 71 0.5 0.020 0.811 0.016 5876.5 0.0 48.9 18.9 5808.7 0.133 72 0.4 0.016 0.811 0.013 5855.9 0.0 48.81 18.91 5788.2 0.133 SHEET 3 OF 9 m m m m m m! r m m m m m m m� m i m BY: AMG 5835.4 0.0 48.7 DATE: 38747 5767.9 0.132 74 JOB # 06001 0.016 0.811 0.013 REF: ARNOLD PALMER OFFICES 0.0 48.6 18.9 SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 " /HR TRIBUTARY 0.3 RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= 4.00 "724HR AREA= 1.01 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (1/4 HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)* ACCU.VOL(CF) 73 0.4 0.016 0.811 0.013 5835.4 0.0 48.7 18.9 5767.9 0.132 74 0.4 0.016 0.811 0.013 5815.0 0.0 48.6 18.9 5747.6 0.132 75 0.3 0.012 0.811 0.010 5782.9 0.0 48.4 18.9 5715.6 0.131 76 0.2 0.008 0.810 0.007 5739.2 0.0 48.2 18.9 5672.1 0.130 77 0.3 0.012 0.811 0.010 5707.5 0.0 48.0 18.9 5640.5 0.129 78 0.4 0.016 0.811 0.013 5687.7 0.0 47.9 18.9 5620.9 0.129 79 0.3 0.012 0.811 0.010 5656.2 0.0 47.8 18.9 5589.5 0.128 80 0.2 0.008 0.810 0.007 5613.1 0.0 47.6 18.9 5546.6 0.127 81 0.3 0.012 0.811 0.010 5582.0 0.0 47.4 18.9 5515.7 0.127 82 0.3 0.012 0.811 0.010 5551.1 0.0 47.3 18.9 5484.9 0.126 83 0.3 0.012 0.811 0.010 5520.3 0.0 47.1 18.9 5454.2 0.125 84 0.2 0.008 0.810 0.007 5477.8 0.0 46.9 18.9 5412.0 0.124 85 0.3 0.012 0.811 0.010 5447.4 0.0 46.8 18.9 5381.7 0.124 86 0.2 0.008 0.810 0.007 5405.3 0.0 46.6 18.9 5339.8 0.123 87 0.3 0.012 0.811 0.010 5375.2 0.0 46.4 18.9 5309.8 0.122 88 0.2 0.008 0.810 0.007 5333.4 0.0 46.2 18.9 5268.3 0.121 89 0.3 0.012 0.811 0.010 5303.7 0.0 46.1 18.9 5238.7 0.120 90 0.2 0.008 0.810 0.007 5262.3 0.0 45.9 18.9 5197.5 0.119 91 0.2 0.008 0.810 0.007 5221.1 0.0 45.7 18.9 5156.5 0.118 92 0.2 0.008 0.810 0.007 5180.1 0.0 45.5 18.9 5115.7 0.117 93 0.2 0.008 0.810 0.007 5139.3 0.0 45.3 18.9 5075.2 0.117 94 0.2 0.008 0.810 0.007 5098.7 0.0 45.1 18.9 5034.81 0.116 95 0.2 0.008 0.810 0.007 5058.3 0.0 44.91 18.9 4994.61 0.115 96 0.2 0.008 0.810 0.007 5018.21 0.0 44.71 18.9 4954.6 0.114 SHEET 4 OF 9 T RETENTION BASIN STORAGE AND DEPTH CALCULATIONS D= 4' -5' D= 3'-4' DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL/FT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN 0.000 3 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 1 0.000 2 0.000 3 0.000 4 0.000 5 0.000 6 0.000 7 0.000 8 0.000 9 0.000 10 0.000 11 0.000 12 0.000 13 0.000 14 0.000 15 0.000 16 0.000 17 0.000 18 0.000 19 0.000 20 0.000 21 0.000 22 0.000 23 0.000 24 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 0.000 0.011 0.000 0.01 0.000 0.01 0.000 0.021 0.000 0.01 0.000 0.01 0.000 0.01 0.000 0.021 0.000 0.021 0.000 0.021 0.000 0.027 0.000 0.027 0.000 0.027 0.000 0.027 0.000 0.027 0.000 0.032 0.000 0.032 0.000 0.037 0.000 0.037 0.000 0.043 0.000 0.032 0.000 0.037 0.000 0.043 0.000 0.043 0.01 1 1468.19 1 1468.19 0 0.01 SHEET 5 OF 9 PERIOD D= 4' -5' D= 3'-4' 25 0.000 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS 0.000 DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL/FT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN 0.000 29 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D= 2.00.' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 25 0.000 26 0.000 27 0.000 -28 0.000 29 0.000 30 0.000 31 0.000 32 0.000 33 0.000 34 0.000 35 0.000 36 0.000 37 0.000 38 0.000 39 0.000 40 0.000 41 0.000 42 0.000 43 0.000 44 0.000 45 0.000 46 0.000 47 0.000 48 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 0.000 0.04 0.000 0.04 0.000 0.05 0.000 0.053 0.000 0.053 0.000 0.059 0.000 0.064 0.000 0.070 0.000 0.080 0.000 0.080 0.000 0.086 0.000 0.091 0.000 0.102 0.000 0.132 0.000 0.228 0.000 0.329 0.000 0.392 0.000 0.454 0.000 0.543 0.000 0.631 0.000 0.712 0.000 0.794 0.000 0.864 0.000 0.939 8 0.05 1524.99 1524.99 0.05 INC 8 0.05 1524.99 1524.99 0.05 FLAT 3 0.05 1533.12 1533.12 0.05 INC 0.05 1533.12 1533.12 0.05 FLAT 0.05 1533.12 1533.12 0.05 FLAT 0.06 1541.26 1541.26 0.06 INC 0.06 1549.40 1549.40 0.06 INC 0.07 1557.55 1557.55 0.07 INC 0.08 1573.86 1573.86 0.08 INC 0.08 1573.86 1573.86 0.08 FLAT 0.09 1582.02 1582.02 0.09 INC 0.09 1590.19 1590.19 0.09 INC 0.10 1606.54 1606.54 0.10 INC 0.13 1652.73 1652.73 0.13 INC 0.23 1798.84 1798.84 0.23 INC 0.33 1952.10 1952.10 0.33 INC 0.39 2047.03 2047.03 0.39 INC 0.45 2141.27 2141.27 0.45 INC 0.54 2275.71 2275.71 0.54 INC 0.63 2409.18 2409.18 0.63 INC 0.71 2533.51 2533.51 0.71 INC 0.79 2656.96 2656.96 0.79 INC 0.86 2763.17 2763.17 0.86 INC 0.94 2876.80 2876.80 0.94 PEAK SHEET 6 OF 9 SHEET 6 OF 9 r m M.mmm m m m m m m MI MI mm m RETENTION BASIN STORAGE AND DEPTH CALCULATIONS DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL /FT(CF) ACCUM.VOL(CF) IMP AREA IN BASIN BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' D= 2' -3' D= V -2' D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 49 0.000 0.000 0.000 0.029 0.000 1.03 3022.64 3022.64 1.03 INC 50 0.000 0.000 0.000 0.095 0.000 1.10 3143.94 3143.94 1.10 INC 51 0.000 0.000 0.000 0.168 0.000 1.17 3275.89 3275.89 1.17 INC 52 0.000 0.000 0.000 0.243 0.000 1.24 3412.82 3412.82 1.24 INC 53 0.000 0.000 0.000 0.333 0.000 1.33 3577.26 3577.26 1.33 INC 54 0.000 0.000 0.000 0.423 0.000 1.42 3740.90 3740.90 1.42 INC 55 0.000 0.000 0.000 0.478 0.000 1.48 3841.85 3841.85 1.48 INC 56 0.000 0.000 0.000 0.533 0.000 1.53 3942.30 3942.30 1.53 INC 57 0.000 0.000 0.000 0.601 0.000 1.60 4064.72 4064.72 1.60 INC 58 0.000 0.000 0.000 0.664 0.000 1.66 4180.92 4180.92 1.66 INC 59 0.000 0.000 0.000 0.728 0.000 1.73 4296.56 4296.56 1.73 INC 60 0.000 0.000 0.000 0.788 0.000 1.79 4406.01 4406.01 1.79 INC 61 0.000 0.000 0.000 0.844 0.000 1.84 4509.31 4509.31 1.84 INC 62 0.000 0.000 0.000 0.898 0.000 1.90 4606.50 4606.50 1.90 INC 63 0.000 0.000 0.000 0.938 0.000 1.94 4680.80 4680.80 1.94 INC 64 0.000 0.000 0.000 0.979 0.000 1.98 4754.74 4754.74 1.98 PEAK 65 0.000 0.000 0.000 0.974 0.000 1.97 4744.76 4744.76 1.97 DEC 66 0.000 0.000 0.000 0.968 0.000 1.97 4734.83 4734.83 1.97 DEC 67 0.000 0.000 0.000 0.960 0.000 1.96 4719.40 4719.40 1.96 DEC 68 0.000 0.000 0.000 0.951 0.000 1.95 4704.05 4704.05 1.95 DEC 69 0.000 0.000 0.000 0.949 0.000 1.95 4699.87 4699.87 1.95 DEC 70 0.000 0.000 0.000 0.947 0.000 1.95 4695.70 4695.70 1.95 DEC 71 0.000 0.000 0.000 0.944 0.000 1.94 4691.561 4691.56 1.94 DEC 72 0.000 0.000 0.000 0.939 0.000 1.94 4681.891 4681.891 1.94 DEC SHEET 7 OF 9 PERIOD D= 4' -5' D= 3'-4' 73 0.000 RETENTION BASIN STORAGE AND DEPTH CALCULATIONS 0.000 DEPTH AREA(SF) DIFF.AREA(SF) AVG.VOL /FT(CF )ACCUM.VOL CF IMP AREA IN BASIN 0.000 77 0.000 BASIN(SF) ELEV. D =5.00' 12017 2670.000 10682 30763 0 0.00 D =4.00' 9347 2429.000 8133 20081 D =3.00' 6918 2125.000 5856 11948 D =2.00' 4793 1823.000 3882 6093 D =1.00' 2970 1518.000 2211 2211 D =0.00' 1452 0 0 PERIOD D= 4' -5' D= 3'-4' 73 0.000 74 0.000 75 0.000 76 0.000 77 0.000 78 0.000 79 0.000 80 0.000 81 0.000 82 0.000 83 0.000 84 0.000 85 0.000 86 0.000 87 0.000 88 0.000 89 0.000 90 0.000 91 0.000 92 0.000 93 0.000 94 0.000 95 0.000 96 0.000 D= 2' -3' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= V -2' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D= 0' -1' DEPTH W.S. AREA ADJ.AREA W.S. ELEV. 0.934 0.00 0.929 0.00 0.920 0.00 0.909 0.00 0.901 0.00 0.896 0.00 0.888 0.00 0.876 0.00 0.868 0.00 0.861 0.00 0.853 0.000 0.842 0.000 0.834 0.000 0.823 0.000 0.815 0.000 0.804 0.000 0.797 0.000 0.786 0.000 0.775 0.000 0.765 0.000 0.754 0.000 0.744 0.000 0.734 0.000 0.723 0.000 0 1.93 4672.26 4672.26 1.93 DEC 0 1.93 4662.69 4662.69 1.93 DEC 0 1.92 4647.61 4647.61 1.92 DEC 0 1.91 4627.07 4627.07 1.91 DEC 0 1.90 4612.17 4612.17 1.90 DEC 0 1.90 4602.89 4602.89 1.90 DEC 0 1.89 4588.10 4588.10 1.89 DEC 0 1.88 4567.85 4567.85 1.88 DEC 0 1.87 4553.24 4553.24 1.87 DEC 0 1.86 4538.70 4538.70 1.86 DEC 1.85 4524.24 4524.24 1.85 DEC 1.84 4504.30 4504.30 1.84 DEC 1.83 4490.00 4490.00 1.83 DEC 1.82 4470.23 4470.23 1.82 DEC 1.82 4456.09 4456.09 1.82 DEC 1.80 4436.49 4436.49 1.80 DEC 1.80 4422.52 4422.52 1.80 DEC 1.79 4403.08 4403.08 1.79 DEC 1.78 4383.74 4383.74 1.78 DEC 1.76 4364.48 4364.48 1.76 DEC 1.75 4345.33 4345.33 1.75 DEC 1.74 4326.26 4326.26 1.74 DEC 1.73 4307.30 4307.30 1.73 DEC 1.72 4288.42 4288.42 1.72 DEC SHEET 8 OF 9 SHEET 8 OF 9 1 1.2 0.048 0.813 PIPE STORAGE HYDROGRAPH FOR 100 YEAR STORM RETENTION 140.5 0.0 75.6 y PREPARED BY ESSI SHAHANDEH 64.8 0.001 2 BY: AMG 0.052 0.813 0.042 DATE: 01/30/06 0.0 75.6 0.0 JOB # 06001 0.003 3 1.8 REF: ARNOLD PALMER OFFICES 0.814 0.059 352.5 SOIL GROUP "B" - AMCII -R.1.= 56 R.C. = 90% PERC.RATE = 0.50 " /HR TRIBUTARY 276.9 RAINFALL FOR 100 YEAR 24 HOUR STORM (SEE PLATE E -5.6)= 4.00 "724HR AREA= 1.00 ACRES PERIOD ACCUM. ADDITIONAL ADDITIONAL ADJUSTED AC -FT (HR) % 1 (100) C (AVG) Q (CFS) VOL(CF) FLOWS(CF)* PERC.(CF) LOSSES(CF)- ACCU.VOL(CF) 1 1.2 0.048 0.813 0.039 140.5 0.0 75.6 0.0 64.8 0.001 2 1.3 0.052 0.813 0.042 217.1 0.0 75.6 0.0 141.4 0.003 3 1.8 0.072 0.814 0.059 352.5 0.0 75.6 0.0 276.9 0.006 4 2.1 0.084 0.815 0.068 523.3 0.0 75.6 0.0 447.7 0.010 5 2.8 0.112 0.817 0.091 777.0 0.0 75.6 0.0 701.4 0.016 6 2.9 0.116 0.817 0.095 1042.6 0.0 75.6 0.0 966.9 0.022 7 3.8 0.152 0.819 0.125 1415.2 0.0 75.6 0.0 1339.5 0.031 8 4.6 0.184 0.821 0.151 1883.4 0.0 75.6 0.0 1807.8 0.042 9 6.3 0.252 0.825 0.208 2556.3 0.0 75.6 0.0 2480.7 0.057 10 8.2 0.328 0.830 0.272 3460.4 0.0 75.6 0.0 3384.7 0.078 11 7.0 0.280 0.827 0.232 4218.2 0.0 75.6 0.0 4142.5 0.095 12 7.3 0.292 0.828 0.242 5012.4 0.0 75.6 0.0 4936.8 0.113 13 10.8 0.432 0.836 0.361 6236.8 0.0 75.6 0.0 6161.2 0.141 14 11.4 0.456 0.837 0.382 7535.8 0.0 75.6 0.0 7460.2 0.171 15 10.4 0.416 0.835 0.347 8710.6 0.0 75.6 0.0 8635.0 0.198 16 8.5 0.340 0.830 0.282 9651.4 0.0 75.6 0.0 9575.8 0.220 17 1.4 0.056 0.813 0.046 9739.8 0.0 75.6 0.0 9664.1 0.222 18 1.9 0.076 0.815 0.062 9887.0 0.0 75.6 0.0 9811.4 0.225 19 1.3 0.052 0.813 0.042 9963.6 0.0 75.6 0.0 9888.0 0.227 20 1.2 0.048 0.813 0.039 10028.4 0.0 75.6 0.0 9952.8 0.228 21 1.1 0.044 0.813 0.036 10081.5 0.0 75.6 0.0 10005.9 0.230 22 1.0 0.040 0.812 0.032 10122.9 0.0 75.6 0.0 10047.3 0.231 23 0.9 0.036 0.812 0.029 10152.5 0.0 75.6 0.0 10076.9 0.231 24 0.8 1 0.0321 0.8121 0.0261 10170.41 0.0 75.61 0.01 10094.8 0.232 SHEET 1 OF 2 61101-1 0.6713 4.629 1974.73 5/101-1 0.7202 3.958 1688.35 SECTION AREA ADJ. AREA ADJ. VOL.(CF) PERC. AREA(SF) #UNITS TTL.LEN.(FT) UNIT HT (IN) ' 10 /10H 0.2795 6.453 2752.81 1815.00 60 426.60 30.00 9/101-1 0.4135 6.173 2633.57 8 /10H 0.5242 5.760 2457.17 BOTTOM ELEV. 7 /10H 0.6067 5.236 2233.55 0.00 61101-1 0.6713 4.629 1974.73 5/101-1 0.7202 3.958 1688.35 4 /10H 0.7639 3.238 1381.12 3 /10H 0.7962 2.474 1055.24 2 /101-1 0.8304 1.677 715.58 1 /10H 0.8470 0.847 .361.33 PERIOD DFPTH W.S. ELEV. 0.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 BY: DATE: JOB # REF: 0.04486 0.04 0.09785 0.10 0.19157 0.19 0.40642 0.41 .0.49505 0.50 0.72908 0.73 0.99247 0.99 1.47886 1.48 2.23549 2.24 0.00000. 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0.00 0.00000 0:00 AMG 01/30/06 06001 ARNOLD PALMER OFFICES INC OK INC OK INC OK INC OK INC OK INC OK INC OK PEAK OK DEC OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW FLAT OVERFLOW UNIT TYPE 2 ADS -SC -310 1 16 "X34 "X85.4" 14.7 CF/UNIT ADS SC -740 2 30"X51 "X85.4" 45.9CF /UNIT INF -STD 3 12"X34 "X75" 10.7CF /UNIT INF -HC 4 16 "X34 "X75" 16.3CF /UNIT SHEET 2 OF 2 ry WL W DG i i LOT 6 BLK 5 MB 19175 770 -156 -006 IN THE CITY OF LA QUINTA, COUNTY OF RIVERSIDE, STATEOF CALIFORNIA T NTAT PAHC EL AIAP 3 4416 BEING A SUBDIVISION OF A PORTION OF LOT 90 OF TRACT 28470 -1 AS SHOWN IN MAP BOOK 263, PAGES 79 THROUGH 90, INCLUSIVE, AND PORTIONS OF LOTS 25 3 AND 4 OF DESERT CLUB TRACT UNIT NO. 1, MB 19 PAGE 75 AS SHAWN ON PARCEL MERGER 2001 -387. BEING IN THE SOUTH ONE HALF OF SECTION 6, TOWNSHIP 6 SOUTH, RANGE 7 EASE, S.B.M. CONTACT INFORMATION r � i ��r24 OWNER: DAVID CHAPMAN INVESTMENTS, LLC 78 -505 AVENUE 52 LA QUINTA, CA 92253 760- 564 -3355 CONTACT: DAVID CHAPMAN DEVELOPER: CHAPMAN GOLF DEVELOPMENT 78 -505 OLD AVENUE 52 LA QUINTA, CA 92253 CONTACT: ANDRES CERVANTES SURVEYOR KELLEHER MAPPING 45175 PANORAMA DRIVE, SUITE E PALM DESERT, CA 92260 760- 340 -5597 CONTACT: DALE KELLEHER UTILITY COMPANIES SEWER AND WATER BY CVWD ELECTRIC BY IMPERIAL IRRIGATION DISTRICT TELEPHONE BY VERIZON GAS BY SOUTHERN CALIFORNIA GAS CO. CATV BY WARNER CABLE DESERT SANDS UNIFIED SCHOOL DISTRICT GENERAL NOTES 1) THERE IS CONTIGUOUS OWNERSHIP 2) AREA = 4.97 AC. +/- 3) LAND IS NOT SUBJECT TO OVERFLOW, 1NNUNDATION =ORFLOOD HAZARD 4) EXISTING ZONING VILLAGE COMMERCIAL SCALE 1 " =40' 0 20 40 80 120 REVISIONS \\ \ \\�� \\ \ IN THE CITY OF LA QUINTA SHEET 12/27/05 FIRST SUBMITTAL �\ \\ "\ ` ` \\ \\ \ \ \ \\ ::.mm \ \ \ \\ TENTATIVE 1 45 -175 PANORAMA DR., SUITE E PARCEL MAP 34416 OF PALM DESERT, CA 92260 1 760 -219 -9886 LOT 90 OF TR. 28470 -1 MB 263/79 -90 AND LOTS 2, 3 AND 4 760 --262 -3000 (FAX) OF DESERT CLUB TRACT UNIT NO. 1 MB 19/75 SHEETS kelleher.mapping@verizon.net SOUTH HALF SEC. 6, T6S, R7E, S.B.M..