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34038i I�pIIIVY 26 IE PRELIMINARY HYDROLOGY & DRAINAGE REPORT Tentative Tract No. 34038 LOCATED IN THE CITY OF LA QUINTA, COUNTY OF RIVERSIDE, CALIFORNIA FEBRUARY 20, 2006 PREPARED FOR: BORREGO RESORT HOLDINGS, LLC 520 S.W. Yamhill, Suite 430 Portland, OR 97204 Phone: (503) 243 -2035 WC 6 t; 7v)!rv--x i PREPARED BY: HACKER ENGINEERING 68 -487 Highway 111, Ste. 43 Cathedral City, Ca 92234 Phone: (760) 202 -1800 W.O. 050707 PRELIMINARY :HYDROLOGY & DRAINAGE REPORT Tentative Tract No. 34038 SITE DESCRIPTION AND PURPOSE OF REPORT The property herein described is located in a portion of Section 1, Township 6 South, Range 6 East, San Bernardino Meridian, in the City of La Quinta, Riverside County, California. The site is further described as a portion of Block 123 of Santa Carmelita at Vale La Quinta No. 14 as recorded in Map Book 18, pages 82 -83 Official Records, County of Riverside. The site is bordered by Calle Tampico to the North, Avenida Villa to the West and South, and Avenida Navarro to the East. The 1.23 acre site is currently vacant and is bordered by a mixture of residential housing and commercial development. The site is nestled in that part of the city of La Quinta known as `The Village'. The . proposed site will consists of a single condominium building containing 2 floors, 9units per floor, and an underground parking garage. t The purpose of this drainage report is to determine the volume of detention needed to retain 100% of the developed runoff from the 100year storm event on -site and to proposed 3 separate alternatives for ultimate disposition of said runoff. ' DRAINAGE DESIGN ' Site visits and study of the flown topo data indicates the site is very flat and currently retains the majority of most rainfall events. Storm water is most likely to spill out onto Avenida Navarro during larger storm events and drain from there onto Calle Tampico. The site is currently situated in a class AO flood zone (per FEMA FIRM PANEL — see Exhibit "A ") that typically floods to a depth of 1'. The surrounding streets are also nearly flat with slopes ranging from 0.22% to 0.37 %. The flooding problem in the area has been ' somewhat alleviated with the construction of some substantial flood control structures in the immediate vicinity as part of the assessment district/ re- development agency construction in the early 1990's. However, flooding in the area is still a strong concern. 1 1 1 1 1 The developed runoff from the 100year storm ( Q100 = 5.9 c.f.s. — Rational Hydrology Study) will be conveyed through a series of roof scuppers and down drains into an underground retention system situated below the floor of the underground parking garage (Please refer to the Exhibit "B" Proposed Hydrology Map). To retain 100% of the runoff from the roof drains and common area drains, a structure with a volume of approx. 10,000 cubic feet will be needed. A single row, 5' deep, 170' long and a single row, 5' deep and 184' long of single trap `StormTrap' type of detention structure would be adequate for the purpose and there is room under the floor of the parking structure to safely place such a structure. However, the issue of ultimate disposition must be addressed. 1 IDRAINAGE DESIGN(CONT'D) ' Permanent retention is not an option as it poses severe health risks due to mold, bees, pests, etc. Preliminary geotechnical borings indicate the site is underlain primarily by semi - impermeable soils to a depth of approx. 50' below existing grade (see soils report t by Sladden Engineering dated January 31, 2005). An additional exploratory boring is being conducted at the time this report's preparation with the sole purpose of exploring the possibility of infiltratign as viable disposition for the stormwater runoff detained. ' Another alternative is a sump pump and 3" force main out - letting to the existing curb and gutter on either of the adjoining streets. This could be accomplished in a gradual manor so as not to add to any flooding conditions being experienced at the time of a major ' rainfall event. A third alternative would also include a sump pump and 3" force main. However, the ultimate disposition would be the existing 10'x2.5' double RCB storm drain culvert bordering the site to the immediate north and running along the south side ' of the Calle Tampico at a shallow depth. Again, this could be accomplished in a gradual manor so as not to add to any surcharging being experienced in the culvert at the time of ' a major rainfall event. This culvert is essentially two systems. One half splits off to the north and drains to a lined channel. The other continues along to the east and picks up additional street runoff from Calle Tampico and the surrounding areas. This third ' alternative would include boring under the culvert and entering it along the northerly side of the culvert entering the portion of this system draining to the lined channel. All three of these alternatives are subject to review and revision by the authorities involved. �I METHODOLOGY AND REFERENCES Methods used to calculate runoff are as prescribed by the Riverside County Flood Control District Hydrology Manual. The Rational Hydrology Study method was used to determine Q100 for the rooftop flow. Synthetic Unit hydrology Method was used to calculate runoff from the 100 -year storm event for detention structure sizing. The drainage report contained herein has been designed in accordance with applicable state and local ordinances. Therefore, if developed as discussed in the one of the three alternatives listed above, the drainage from this site will not adversely affect persons or property onsite or downstream. m RATIONAL METHOD HYDROLOGY 1 u 050707PROPONSITE.out Riverside County Rational Hydrology Program CIVILCADD /CIVILDESIGN Engineering Software,(c) 1989 - 1999 version 6.1 Rational Hydrology Study Date: 02/21/06 File:050707PROPONSITE.out CASA LA QUINTA - ON -SIRE PROPOSED HEI J.N. 050707 BASIN B1 100 YEAR STORM EVENT' Hydrology study Control Information English (in -lb) units used in input data file ------------------------------------------------------------------------ Hacker Engineering, Yucca valley, California - S/N 794 Rational Method Hydrology Program based on Riverside County Flood Control & water Conservation District 1978 hydrology manual Storm event (year) = 100.00 Antecedent Moisture Condition = 2 2 year, 1 hour precipitation = 0.370(In.) 100 year, 1 hour precipitation = 1.760(In.) Storm event year = 100.0 Calculated rainfall intensity data: 1 hour intensity = 1.760(In /Hr) Slope of intensity duration curve = 0.5800 +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ Process from Point /Station 10.000 to Point /Station 20.000 * INITIAL AREA EVALUATION ' "'` ** Initial area flow distance = 15.000(Ft.) ' Top (of initial area) elevation = 74.500(Ft.) Bottom (of initial area) elevation = 72.500(Ft.) Difference in elevation = 2.000(Ft.) Slope = 0.13333 s(percent)= 13.33 ' TC = k(0.300)*[(lengthA3) /(elevation change)]A0.2 warning: TC computed to be less than 5 min.; program is assuming the time of concentration is 5 minutes. Initial area time of concentration = 5.000 min. Rainfall intensity = 7.438(In /Hr) for a 100.0 year storm COMMERCIAL subarea type Runoff Coefficient = 0.895 Decimal fraction soil group A = 0.000 Decimal fraction soil group B = 0.000 Decimal fraction soil group C = 0.000 Decimal fraction soil group D = 1.000 RI index for soil(AMC 2) = 75.00 Pervious area fraction = 0.100; Impervious fraction = 0..900 Initial subarea runoff = 6.523(CFS) Total initial stream area = 0.980(AC.) Pervious area fraction = 0.100 End of computations, total study area = 0.980 (AC.) Page 1 UNIT HYDROGRAPH ANALYSIS ' 050707HA1100.out U n i t H y d r o g r a p h A n a l y s i s Copyright (c) CIVILCADD /CIVILDESIGN, 1989 - 1999, Version 6.0 study date 02/21/06 File: 050707HA1100.out I 1 1 1 1 1 1 +++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ ------------------------------------------------------------------------ Riverside County Synthetic unit Hydrology Method RCFC & WCD Manual date - April 1978 Hacker Engineering, Yucca valley, California - S/N 794 --------------------------------------------------------------------- English (in -lb) Input units used English Rainfall Data (Inches) Input values used English units used in output format --------------------------------------------------------------------- CASA LA QUINTA - PROPOSED HYDROGRAPH HEI J.N. 050707 BASIN B1 1HOUR -0100 YEAR -------------------------------------------------------------- - - - - -- Drainage Area = 0.98(Ac.) = 0.002 sq. Mi. USER Entry of lag time in hours Lag time = 0.'011 Hr. Lag time = 0.64 Min. 25% of lag time = 0.16 Min. 40% of lag time = 0.26 Min. Unit time = 5.00 Min. Duration of storm = 1 Hour(s) user Entered Base F1oW = 0.00(CFS) 2 YEAR Area rainfall data: Area(AC.)[11 Rainfall(In)[21 weighting[1 *21 0.98 0.37 0.36 100 YEAR Area rainfall data: Area(Ac.)[11 Rainfall(In)[21 weighting[1 *21 0.98 1.76 1.72 STORM EVENT (YEAR) = 100.00 Area Averaged 2 -Year Rainfall = 0.370(In) Area Averaged 100 -Year Rainfall = 1.760(In) Point rain (area Areal adjustment Adjusted average sub -Area Data: Area(AC.) 0.980 Total Area Ente averaged) = 1.760(In) factor = 100.00 point rain = 1.760(In) Runoff Index Impervious 75.00 0.900 red = 0.98(AC.) Page 1 I050707HA1100.out ' RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F Effective AMC2 AMC -2 (In /Hr) (Dec. %) (In /Hr) (Dec.) (In /Hr) (In /Hr) Max I Low 75.0 75.0 0.303 0.900 0.058 1.000 0.058 ' Area averaged mean soil loss (F) (In /Hr) = 0.058 Sum (F) = 0.058 0.17 Minimum soil loss rate ((In /Hr)) = 0.029 0.83 3 (for 24 hour storm duration) 4.40 0.929 0.058 - -- ' soil low loss rate (decimal) = intensity- duration 0.180 for 4.60 0.972 0.058 - -- Slope of curve ---------------------------------------------------------------------- a 1 hour storm = 0.5800 ' U n i t H y d r o g r a p h 6 0.50 DESERT S -Curve 1.183 0.058 - -- 1.13 ' -------------------------------------------------------------------- unit Hydrograph Data unit time period Time % of lag Distribution unit Hydrograph 1.29 (hrs) Graph % (CFS) ' --------------------------------------------------------------------- 1 0.083 778.816 80.972 0.800 13.10 2 0.167 1557.632 19.028 0.188 ----------------------------------------------------------------- Sum = 100.000 Sum= 0.988 - - - - -- Unit Time Pattern Storm Rain Loss rate(In. /Hr) Effective (Hr.) Percent (In /Hr) Max I Low (In /Hr) 1 0.08 3.60 0.760 0.058 - -- 0.70 2 0.17 4.20 0.887 0.058 - -- 0.83 3 0.25 4.40 0.929 0.058 - -- 0.87 4 0.33 4.60 0.972 0.058 - -- 0.91 5 0.42 S.00 1.056 0.058 - -- 1.00 6 0.50 5.60 1.183 0.058 - -- 1.13 7 0.58 6.40 1.352 0.058 - -- 1.29 8 0.67 8.10 1.711 0.058 - -- 1.65 9 0.75 13.10 2.767 0.058 - -- 2.71 10 0.83 34.50 7.286 0.058 - -- 7.23 11 0.92 6.70 1.415 0.058 - -- 1.36 12 1.00 3.80 0.803 0.058 - -- 0.74 Sum = 100.0 Sum = 20.4 Flood volume = Effective rainfall 1.70(In) times area 1.0(AC.) /[(In) /(Ft.)1 = 0.1(AC.Ft) Total soil loss = 0.06(In) Total soil loss = 0.005(AC.Ft) Total rainfall = 1.76(In) Flood volume = 6056.2 Cubic Feet Total soil loss = 204.8 Cubic Feet ------- - - - - -- flow rate of this hydrograph-=------6_293(CFS) ----------------------- -Peak ---------------------------- +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ 1 - H O U R S T 0 R M n o f f H y d r o g r a p h -- - - - - -- - - -R Hydrograph -u -------------------------------------------------- in 5 Minute intervals ((CFS)) ----------------------------------- Time(h+m) volume AC.Ft Q(CFS) 0 2.5 5.0 7.5 10.0 ----------------------------------------------------------------------- 0+ 5 0.0039 0.56 IvQ I I I I Page 2 i 1 1 1 1 Page 3 050707HA1100.0ut 0 +10 0.0094 0.80 I VQ 0 +15 0.0152 0.85 I Qv I I I I 0 +20 0.0214 0.90 I Q v 0 +25 0.0281 0.97 I Q v I I 0 +30 0.0356 1.09 I Q v 0 +35 0.0442 1.25 I Q I v I I 0 +40 0.0549 1.57 I Q I v I I I 0 +45 0.0720 2.48 1 QI v I I 0 +50 0.1154 6.29 1 1 1 Q I v 0 +55 0.1322 2.45 1 QI I I v I 1+ 0 0.1381 0.85 1 Q I I I vi 1+ 5 0.1390 0.14 ----------------------------------------------------------------- Q I I I v - - - - -- Page 3 m 050707HA3100.out ' U n i t H y d r o g r a p h A n a l y s i s Copyright (C) CIVILCADD /CIVILDESIGN, 1989 - 1999, Version 6.0 Study date 02/21/06 File: 050707HA3100.out +++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ ------------------------------------------------------------------------ Riverside County synthetic unit Hydrology Method RCFC & wCD Manual date - April 1978 Hacker Engineering, Yucca valley, California - S/N 794 English (in -lb) Input Units Used English Rainfall Data (Inches) Input values used English units used in output format --------------------------------------------------------------------- CASA LA QUINTA - PROPOSED HYDROGRAPH HEI J.N. 050707 BASIN B1 3HOUR -0100 YEAR -------------------------------------------------------------------- Drainage Area = 0.98(AC.) = 0.002 Sq. Mi. USER Entry of lag time in hours Lag time = 0.011 Hr. Lag time = 0.64 Min. 25% of lag time = 0.16 Min. 40% of lag time = 0.26 Min. Unit time = 5.00 Min. Duration of storm = 3 Hour(s) user Entered Base Flow = 0.00(CFS) 2 YEAR Area rainfall data: Area(AC.)[11 Rainfall(In)[21 weighting[1*21 0.98 0.57 0.56 100 YEAR Area rainfall data: Area(AC.)[11 Rainfall(In)[21 weighting[1 *21 0.98 2.26 2.21 STORM EVENT (YEAR) = 100.00 Area Averaged 2 -Year Rainfall = 0.570(In) Area Averaged 100 -Year Rainfall = 2.260(In) Point rain (area Areal adjustment Adjusted average Sub -Area Data: Area(AC.) 0.980 Total Area Ente averaged) = 2.260(In) factor = 100.00 point rain = 2.260(In) Runoff index Impervious 75.00 0.900 red = 0.98(AC.) Page 1 m 050707HA3100.out RI RI Infil. Rate Impervious AMc2 AMC -2 (In /Hr) (Dec. %) 75.0 75.0 0.303 0.900 Adj. Infil. Rate Area% F (In /Hr) (Dec.) (In /Hr) 0.058 1.000 0.058 Sum (F) = 0.058 Area averaged mean soil loss (F) (In /Hr) = 0.058 Minimum soil loss rate ((In /Hr)) = 0.029 (for 24 hour storm duration) Soil low loss rate (decimal) = 0.180 --------------------------------------------------------------- - - - - -- u n i t H y d r o g r a p h DESERT S -Curve unit Hydrograph Data --------------------------------------------------------------------- unit time period Time % of lag Distribution unit Hydrograph hrs) Graph (CFS) ----( --------------------- 1 0.083 778.816 - - - - -- ------------- 80.972 - 0.800 2 0.167 1557.632 19.028 0.188 -------------------------------------- SUM = 100000 sum - -- _- -- -------- 0_988 - unit Time Pattern Storm Rain Loss rate(In. /Hr) Effective (Hr.) Percent (In /Hr) Max Low (In /Hr) 1 0.08 1.30 0.353 0.058 - -- 0.29 2 0.17 1.30 0.353 0.058 - -- 0.29 3 0.25 1.10 0.298 0.058 - -- 0.24 4 0.33 1.50 0.407 0.058 - -- 0.35 5 0.42 1.50 0.407 0.058 - -- 0.35 6 0.50 1.80 0.488 0.058 - -- 0.43 7 0.58 1.50 0.407 0.058 - -- 0.35 8 0.67 1.80 0.488 0.058 - -- 0.43 9 0.75 1.80 0.488 0.058 - -- 0.43 10 0.83 1.50 0.407 0.058 - -- 0.35 11 0.92 1.60 0.434 0.058 - -- 0.38 12 1.00 1.80 0.488 0.058 - -- 0.43 13 1.08 2.20 0.597 0.058 - -- 0.54 14 1.17 2.20 0.597 0.058 - -- 0.54 15 1.25 2.20 0.597 0.058 - -- 0.54 16 1.33 2.00 0.542 0.058 - -- 0.48 17 1.42 2.60 0.705 0.058 - -- 0.65 18 1.50 2.70 0.732 0.058 - -- 0.67 19 1.58 2.40 0.651 0.058 - -- 0.59 20 1.67 2.70 0.732 0.058 - -- 0.67 21 1.75 3.30 0.895 0.058 - -- 0.84 22 1.83 3.10 0.841 0.058 - -- 0.78 23 1.92 2.90 0.786 0.058 - -- 0.73 24 2.00 3.00 0.814 0.058 - -- 0.76 25 2.08 3.10 0.841 0.058 - -- 0.78 26 2.17 4.20 1.139 0.058 - -- 1.08 27 2.25 5.00 1.356 0.058 - -- 1.30 28 2.33 3.50 0.949 0.058 - -- 0.89 29 2.42 6.80 1.844 0.058 - -- 1.79 30 2.50 7.30 1.980 0.058 - -- 1.92 31 2.58 8.20 2.224 0.058 - -- 2.17 32 2.67 5.90 1.600 0.058 - -- 1.54 33 2.75 2.00 0.542 0.058 - -- 0.48 34 2.83 1.80 0.488 0.058 - -- 0.43 35 2.92 1.80 0.488 0.058 - -- 0.43 Page 2 m 1 1 1 1 1 1 1 1 1 1 Time(h +m) volume AC.Ft Q(CFS) 0 2.5 5.0 7.5 10.0 050707HA3100.out ----------------------------------------------------------------------- 0+ 5 0.0016 0.24 Q 36 3.00 0.60 0.163 0.058 - -- 0.11 ' sum = Flood 100.0 Sum = 25.0 volume = Effective rainfall 2.09(In) 0 +10 0.0036 0.29 vQ times area 1.0(Ac.) /[(In) /(Ft.)] = 0.2(Ac.Ft) I I Total soil loss = 0.17(In) 0 +15 0.0053 0.25 Qv Total Total soil loss = 0.014(Ac.Ft) rainfall = 2.26(In) I I Flood volume = 7425.3 Cubic Feet 0 +20 0.0076 0.32 IQ Total soil loss = 614.4 Cubic Feet t -------------------------------------------------------------------- -Peak -------------------------------- flow rate of t�is hydrograph =------ 2_095(CFS) ------------------- 0 +25 0.0100 0.35 IQv +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ 3 - H O U R S T O R M ' R u n o f f H y d r o g r a p h I I Hydrograph in 5 Minute intervals ((CFS)) 1 1 1 1 1 1 1 1 1 1 Time(h +m) volume AC.Ft Q(CFS) 0 2.5 5.0 7.5 10.0 ----------------------------------------------------------------------- 0+ 5 0.0016 0.24 Q I I I I 0 +10 0.0036 0.29 vQ I I I I 0 +15 0.0053 0.25 Qv I I I I 0 +20 0.0076 0.32 IQ I I I 0 +25 0.0100 0.35 IQv 0 +30 0.0128 0.41 IQv I I I .0 +35 0.0153 0.36 IQ v I I I I 0 +40 0.0181 0.41 IQ v 0 +45 0.0210 0.43 IQ v 0 +50 0.0235 0.36 IQ v I I I 0 +55 0.0260 0.37 IQ v 1+ 0 0.0289 0.42 IQ v I I I I 1+ 5 0.0324 0.51 I Q v I I I I 1 +10 0.0361 0.53 I Q V I 1 +15 0.0398 0.53 1 Q VI I I I 1 +20 0.0431 0.49 IQ v I I I 1 +25 0.0473 0.61 1 Q Iv I 1 +30 0.0519 0.66 I Q I V I I I 1 +35 0.0560 0.60 I Q I V I 1 +40 0.0605 0.65 I Q I v 1 +45 0.0660 0.80 I Q I v 1 +50 0.0714 0.78 I Q I v 1 +55 0.0764 0.73 I Q I v I I I 2+ 0 0.0815 0.74 1 Q I VI 2+ 5 0.0868 0.77 1 Q I v I I 2 +10 0.0938 1.01 I Q I I v 2 +15 0.1024 1.24 I Q I I v 2 +20 0.1090 0.96 I Q I I v I I 2 +25 0.1200 1.60 I Q I I v 2 +30 0.1329 1.87 I Q I I IV I 2 +35 0.1473 2.09 I Q I I I v 2 +40 0.1586 1.64 I Q I I I v l 2 +45 0.1633 0.68 I Q I I I v l 2 +50 0.1663 0.44 IQ I I I v1 2 +55 0.1692 0.43 IQ I I I VI 3+ 0 0.1703 0.17 Q I I I vl 3+ 5 0.1705 0.02 ----------------------------------------------------------------- Q I I I - - - - -- v Page 3 m t050707HA6100.out ' u n i t H y d r o g r a p h A n a l y s i s Copyright (C) CIVILCADD /CIVILDESIGN, 1989 - 1999, version 6.0 Study date 02/21/06 File: 050707HA6100.out +++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ ------------------------------------------------------------------------ Riverside County Synthetic unit Hydrology Method RCFC & wCD Manual date - April 1978 Hacker Engineering, Yucca valley, California - S/N 794 -- - - - - -- -------- - - - - -- English (in -lb) Input units used English Rainfall Data (Inches) Input values used English units used in output format --------------------------------------------------------------------- CASA LA QUINTA - PROPOSED HYDROGRAPH HEI J.N. 050707 BASIN B1 6HOUR -0100 YEAR -------------------------------------------------------------------- Drainage Area = 0.98(AC.) = 0.002 Sq. Mi. USER Entry of lag time in hours Lag time = 0.'011 Hr. Lag time = 0.64 Min. 25% of lag time = 0.16 Min. 40% of lag time = 0.26 Min. Unit time = 5.00 Min. Duration of storm = 6 Hour(s) user Entered Base Flow = 0.00(CFS) 2 YEAR Area rainfall data: Area(AC.)[1] Rainfall(In)[2] weighting[1*2] 0.98 0.77 0.75 100 YEAR Area rainfall data: Area(AC.)[1] Rainfall(In)[2] weighting[1 *2] 0.98 2.73 2.68 STORM EVENT (YEAR) = 100.00 Area Averaged 2 -Year Rainfall = 0.770(In) Area Averaged 100 -Year Rainfall = 2.730(In) Point rain (area Areal adjustment Adjusted average sub -Area Data: Area(AC.) 0.980 Total Area Ente averaged) = 2.730(In) factor = 100.00 point rain = 2.730(In) Runoff Index Impervious 75.00 0.900 red = 0.98(Ac.) Page 1 n 050707HA6100.out RI RI Infil. Rate Impervious AMC2 AMC -2 (In /Hr) (Dec. %) 75.0 75.0 0,303 0.900 Adj. Infil. Rate Area% F (In /Hr) (Dec.) (In /Hr) 0.058 1.000 0.058 Sum (F) = 0.058 Area averaged mean soil loss (F) (In /Hr) = 0.058 Minimum soil loss rate ((In /Hr)) = 0.029 (for 24 hour storm duration) Soil low loss rate decimal) = 0.180 --------------------------------------------------------------- - - - - -- u n i t H y d r o g r a p h - - -- DESERT S -Curve unit Hydrograph Data --------------------------------------------------------------------- unit time period Time % of lag Distribution unit Hydrograph ' (hrs) Graph % (CFS) ------------------------------------------o-------------------------- 1 0.083 778.816 80.972 0.800 2 0.167 1557.632 19.028 0.188 ------------------------------- - - - - -- Sum = 0 Sum -- --------- -------- - ----- unit Time Pattern Storm Rain Loss rate(In. /Hr) Effective ' (Hr.) Percent (In /Hr) Max Low (In /Hr) 1 0.08 0.50 0.164 0.058 - -- 0.11 2 0.17 0.60 0.197 0.058 - -- 0.14 3 0.25 0.60 0.197 0.058 0.14 ' 4 0.33 0.60 0.197 ___ 0.058 0.14 5 0.42 0.60 0.197 0.058 - -- 0.14 6 0.50 0.70 0.229 0.058 - -- 0.17 7 0.58 0.70 0.229 0.058 0.17 ' 8 0.67 0.70 0.229 ___ 0.058 0.17 9 0.75 0.70 0.229 0.058 - -- 0.17 10 0.83 0.70 0.229 0.058 - -- 0.17 11 0.92 0.70 0.229 0.058 0.17 ' 12 1.00 0.80 0.262 ___ 0.058 0.20 13 1.08 0.80 0.262 0.058 - -- 0.20 14 1.17 0.80 0.262 0.058 - -- 0.20 15 1.25 0.80 0.262 0.058 0.20 1 16 1.33 0.80 0.262 ___ 0.058 0.20 17 1.42 0.80 0.262 0.058 - -- 0.20 18 1.50 0.80 0.262 0.058 - -- 0.20 19 1.58 0.80 0.262 0.058 0.20 ' 20 1.67 0.80 0.262 ___ 0.058 0.20 21 1.75 0.80 0.262 0.058 - -- 0.20 22 1.83 0.80 0.262 0.058 - -- 0.20 23 1.92 0.80 0.262 0.058 - -- 0.20 ' 24 2.00 0.90 0.295 0.058 0.24 25 2.08 0.80 0.262 0.058 0.20 26 2.17 0.90 0.295 0.058 - -- 0.24 27 2.25 0.90 0.295 0.058 - -- 0.24 ' 28 2.33 0.90 0.295 0.058 0.24 29 2.42 0.90 0.295 0.058 0.24 30 2.50 0.90 0.295 0.058 - -- 0.24 31 2.58 0.90 0.295 0.058 0:24 ' 32 2.67 0.90 0.295 =__ 0.058 0.24 33 2.75 1.00 0.328 0.058 0.27 34 2.83 1.00 0.328 0.058 - -- 0.27 35 2.92 1.00 0.328 0.058 - -- 0.27 Page 2 m i 1 1 1 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 050707HA6100.out 3.00 1.00 0.328 0.058 - -- 0.27 3.08 1.00 0.328 0.058 - -- 0.27 3.17 1.10 0.360 0.058 - -- 0.30 3.25 1.10 0.360 0.058 - -- 0.30 3.33 1.10 0.360 0.058 - -- 0.30 3.42 1.20 0.393 0.058 - -- 0.34 3.50 1.30 0.426 0.058 - -- 0.37 3.58 1.40 0.459 0.058 - -- 0.40 3.67 1.40 0.459 0.058 - -- 0.40 3.75 1.50 0,.491 0.058 - -- 0.43 3.83 1.50 0.491 0.058 - -- 0.43 3.92 1.60 0.524 0.058 - -- 0.47 4.00 1.60 0.524 0.058 - -- 0.47 4.08 1.70 0.557 0.058 - -- 0.50 4.17 1.80 0.590 0.058 - -- 0.53 4.25 1.90 0.622 0.058 - -- 0.56 4.33 2.00 0.655 0.058 - -- 0.60 4.42 2.10 0.688 0.058 - -- 0.63 4.50 2.10 0.688 0.058 - -- 0.63 4.58 2.20 0.721 0.058 - -- 0.66 4.67 2.30 0.753 0.058 - -- 0.70 4.75 2.40 0.786 0.058 - -- 0.73 4.83 2.40 0.786 0.058 - -- 0.73 4.92 2.50 0.819 0.058 - -- 0.76 5.00 2.60 0.852 0.058 - -- 0.79 5.08 3.10 1.016 0.058 - -- 0.96 5.17 3.60 1.179 0.058 - -- 1.12 5.25 3.90 1.278 0.058 - -- 1.22 5.33 4.20 1.376 0.058 - -- 1.32 5.42 4.70 1.540 0.058 - -- 1.48 5.50 5.60 1.835 0.058 - -- 1.78 5.58 1.90 0.622 0.058 - -- 0.56 5.67 0.90 0.295 0.058 - -- 0.24 5.75 0.60 0.197 0.058 - -- 0.14 5.83 0.50 0.164 0.058 - -- 0.11 5.92 0.30 0.098 0.058 - -- 0.04 6.00 0.20 0.066 0.058 - -- 0.01 Sum = 100.0 Sum = 28.6 Flood volume = Effective rainfall 2.38(In) times area 1.0(AC.) /[(In) /(Ft.)] = 0.2(AC.Ft) Total soil loss = 0.35(In) Total soil loss = 0.028(AC.Ft) Total rainfall = 2.73(In) Flood volume = 8482.9 Cubic Feet Total soil loss = 1228.8 cubic Feet -------------------------------------------------------------------- Peak flow rate of this hydrograph = 1.701(CFS) +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ 6 - H O U R S T O R M R u n o f f H y d r o g r a p h Hydrograph in 5 Minute intervals ((CFS)) -------------------------------------------------------------------- Time(h +m) volume AC.Ft Q(CFS)0-- ' 0 7_5 2_5- -------------------------- 0+ 5 0.0006 0.08 -5_ - - - -- -10.0 -- - - - -- Q I I I I 0 +10 0.0015 0.13 Q I I I I 0 +15 0.0024 0.14 Q 0 +20 0.0034 0.14 Q I I I I 0 +25 0.0043 0.14 Q I I I I 0 +30 0.0055 0.16 Qv I I I Page 3 1 V 050707HA6100.out 0 +35 0.0066 0.17 QV I 0 +40 0.0078 0.17 QV I I 0 +45 0.0090 0.17 QV I I 0 +50 0.0101 0.17 Q V I I 0 +55 0.0113 0.17 Q V 1+ 0 0.0126 0.20 Q V I I 1+ 5 0.0140 0.20 Q V 1 +10 0.0154 0.20 Q V I I 1 +15 0.0168 0.20 Q V 1 +20 0.0182 0.20 Q V I I 1 +25 0.0196 0.20 Q V 1 +30 0.0210 0.20 Q v I I 1 +35 0.0224 0.20 Q V I I 1 +40 0.0238 0.20 Q v I 1 +45 0.0252 0.20 Q v I I 1 +50 0.0266 0.20 Q V I I 1 +55 0.0280 0.20 Q V 2+ 0 0.0295 0.23 Q V I 2+ 5 0.0310 0.21 Q V I 2 +10 0.0325 0.23 Q V 2 +15 0.0342 0.23 Q v l 2 +20 0.0358 0.23 Q V 2 +25 0.0374 0.23 Q V 2 +30 0.0390 0.23 Q v I I 2 +35 0.0406 0.23 Q v l I 2 +40 0.0422 0.23 Q V 2 +45 0.0440 0.26 IQ VI I 2 +50 0.0459 0.27 IQ VI 2 +55 0.0477 0.27 IQ VI 3+ 0 0.0495 0.27 IQ V I 3+ 5 0.0514 0.27 IQ V I 3 +10 0.0534 0.29 IQ V I 3 +15 0.0554 0.30 IQ IV I 3 +20 0.0575 0.30 IQ IV 3 +25 0.0598 0.33 IQ I V I 3 +30 0.0622 0.36 IQ I v I 3 +35 0.0649 0.39 IQ I v 3 +40 0.0676 0.40 IQ I v I 3 +45 0.0705 0.42 IQ I V 1 3 +50 0.0735 0.43 IQ I v 1 3 +55 0.0766 0.45 IQ I v I 4+ 0 0.0798 0.46 IQ I V 1 4+ 5 0.0832 0.49 IQ I v I 4 +10 0.0867 0.52 I Q I V 4 +15 0.0905 0.55 I Q I v l 4 +20 0.0946 0.58 I Q I VI 4 +25 0.0988 0.62 I Q I v 4 +30 0.1031 0.62 I Q I IV 4 +35 0.1076 0.65 I Q I I v 4 +40 0.1123 0.68 I Q I I V 4 +45 0.1172 0.71 I Q I I V 4 +50 0.1221 0.72 I Q I I V 4 +55 0.1273 0.75 I Q I I V 5+ 0 0.1326 0.78 I Q I I V 5+ 5 0.1390 0.92 I Q I I V 5 +10 0.1464 1.08 I Q I I 5 +15 0.1545 1.19 I Q 5 +20 0.1634 1.28 I Q I I 5 +25. 0.1733 1.43 I Q 5 +30 0.1850 1.70 I Q I 5 +35 0.1904 0.79 I Q I I 5 +40 0.1924 0.30 IQ I I 5 +45 0.1935 0.16 Q Page 4 V Iv I v I v I V vi I VI It Page 5 050707HA6100.out 5 +50 0.1943 0.11 Q I I I v 5 +55 0.1946 0.05 Q I I I v 6+ 0 0.1947 0.01 Q I I I v 6+ 5 ----------------------------------------------------------------- 0.1947 0.00 Q I I I v - - - - -- It Page 5 1 1 1 050707HA24100.out u n i t H y d r o g r a p h A n a l y s i s Copyright (C) CIVILCADD /CIVILDESIGN, 1989 - 1999, Version 6.0 study date 02/21/06 File: 050707HA24100.out +++++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ ------------------------------------------------------------------------ Riverside county Synthetic unit Hydrology Method RCFC & WCD Manual date - April 1978 Hacker Engineering, Yucca valley, California - S/N 794 English (in -lb) Input units used English Rainfall Data (Inches) Input values used English units used in output format CASA LA QUINTA - PROPOSED HYDROGRAPH HEI J.N. 050707 BASIN B1 24HOUR -0100 YEAR -------------------------------------------------------------------- Drainage Area = 0.98(AC.) = 0.002 Sq. Mi. USER Entry of lag time in hours Lag time = 0.011 Hr. Lag time = 0.64 Min. 25% of lag time = 0.16 Min. 40% of lag time = 0.26 Min. Unit time = 5.00 Min. Duration of storm = 24 Hour(s) User Entered Base FLOW = 0.00(CFS) 2 YEAR Area rainfall data: Area(AC.)[11 Rainfall(In)[21 weighting[1*21 0.98 1.06 1.04 100 YEAR Area rainfall data: Area(AC.)[11 Rainfall(In)[21 Weighting[1 *21 0.98 3.84 3.76 STORM EVENT (YEAR) = 100.00 Area Averaged 2 -Year Rainfall = 1.060(In) Area Averaged 100 -Year Rainfall = 3.840(In) Point rain (area Areal adjustment Adjusted average sub -Area Data: Area(AC.) 0.980 Total Area Ente averaged) = 3.840(In) factor = 100.00 point rain = 3.840(In) Runoff Index Impervious Y. 75.00 0.900 red = 0.98(AC.) Page 1 m 1 1 1 1 050707HA24100.out RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F AMC2 AMC -2 (In /Hr) (Dec. %) (In /Hr) (Dec.) (In /Hr) 75.0 75.0 0.303 0.900 0.058 1.000 0.058 Sum (F) = 0.058 Area averaged mean soil loss (F) (In /Hr) = 0.058 Minimum soil loss rate ((in /Hr)) = 0.029 (for 24 hour storm duration) soil low loss rate (decimal) = 0.180 --------------------------------------------------------------- - - - - -- u n i t H y d r o g r a p h DESERT S -Curve unit Hydrograph Data --------------------------------------------------------------------- unit time period Time % of lag Distribution unit Hydrograph (hrs) Graph % (CFS) 1 0.083 778.816 80.972 0.800 2 0.167 1557.632 19.028 0.188 ----------------------------- - - - - -- Sum = 100.000 Sum= ---------_- 0988 unit Time Pattern Storm Rain Loss rate(In. /Hr) Effective (Hr.) Percent (In /Hr) Max Low (In /Hr) 1 0.08 0.07 0.031 0.102 0.006 0.03 2 0.17 0.07 0.031 0.102 0.006 0.03 3 0.25 0.07 0.031 0.101 0.006 0.03 4 0.33 0.10 0.046 0.101 0.008 0.04 5 0.42 0.10 0.046 0.100 0.008 0.04 6 0.50 0.10 0.046 0.100 0.008 0.04 7 0.58 0.10 0.046 0.100 0.008 0.04 8 0.67 0.10 0.046 0.099 0.008 0.04 9 0.75 0.10 0.046 0.099 0.008 0.04 10 0.83 0.13 0.061 0.099 0.011 0.05 11 0.92 0.13 0.061 0.098 0.011 0.05 12 1.00 0.13 0.061 0.098 0.011 0.05 13 1.08 0.10 0.046 0.097 0.008 0.04 14 1.17 0.10 0.046 0.097 0.008 0.04 15 1.25 0.10 0.046 0.097 0.008 0.04 16 1.33 0.10 0.046 0.096 0.008 0.04 17 1.42 0.10 0.046 0.096 0.008 0.04 18 1.50 0.10 0.046 0.095 0.008 0.04 19 1.58 0.10 0.046 0.095 0.008 0.04 20 1.67 0.10 0.046 0.095 0.008 0.04 21 1.75 0.10 0.046 0.094 0.008 0.04 22 1.83 0.13 0.061 0.094 0.011 0.05 23 1.92 0.13 0.061 0.094 0.011 0.05 24 2.00 0.13 0.061 0.093 0.011 0.05 25 2.08 0.13 0.061 0.093 0.011 0.05 26 2.17 0.13 0.061 0.092 0.011 0.05 27 2.25 0.13 0.061 0.092 0.011 0.05 28 2.33 0.13 0.061 0.092 0.011 0.05 29 2.42 0.13 0.061 0.091 0.011 0.05 30 2.50 0.13 0.061 0.091 0.011 0.05 31 2.58 0.17 0.077 0.091 0.014 0.06 32 2.67 0.17 0.077 0.090 0.014 0.06 33 2.75 0.17 0.077 0.090 0.014 0.06 34 2.83 0.17 0.077 0.089 0.014 0.06 35 2.92 0.17 0.077 0.089 0.014 0.06 Page 2 050707HA24100.out 36 3.00 0.17 0.077 0.089 0.014 0.06 37 3.08 0.17 0.077 0.088 0.014 0.06 38 3.17 0.17 0.077 0.088 0.014 0.06 39 3.25 0.17 0.077 0.088 0.014 0.06 40 3.33 0.17 0.077 0.087 0.014 0.06 41 3.42 0.17 0.077 0.087 0.014 0.06 42 3.50 0.17 0.077 0.087 0.014 0.06 43 3.58 0.17 0.077 0.086 0.014 0.06 44 3.67 0.17 0.077 0.086 0.014 0.06 45 3.75 0.17 0.077 0.085 0.014 0.06 46 3.83 0.20 O.b92 0.085 - -- 0.01 47 3.92 0.20 0.092 0.085 - -- 0.01 48 4.00 0.20 0.092 0.084 - -- 0.01 49 4.08 0.20 0.092 0.084 - -- 0.01 50 4.17 0.20 0.092 0.084 - -- 0.01 51 4.25 0.20 0.092 0.083 - -- 0.01 52 4.33 0.23 0.108 0.083 - -- 0.02 53 4.42 0.23 0.108 0.083 - -- 0.02 54 4.50 0.23 0.108 0.082 - -- 0.03 55 4.58 0.23 0.108 0.082 - -- 0.03 56 4.67 0.23 0.108 0.082 - -- 0.03 57 4.75 0.23 0.108 0.081 - -- 0.03 58 4.83 0.27 0.123 0.081 - -- 0.04 59 4.92 0.27 0.123 0.080 - -- 0.04 60 5.00 0.27 0.123 0.080 - -- 0.04 61 5.08 0.20 0.092 0.080 - -- 0.01 62 5.17 0.20 0.092 0.079 - -- 0.01 63 5.25 0.20 0.092 0.079 - -- 0.01 64 5.33 0.23 0.108 0.079 - -- 0.03 65 5.42 0.23 0.108 0.078 - -- 0.03 66 5.50 0.23 0.108 0.078 - -- 0.03 67 5.58 0.27 0.123 0.078 - -- 0.05 68 5.67 0.27 0.123 0.077 - -- 0.05 69 5.75 0.27 0.123 0.077 - -- 0.05 70 5.83 0.27 0.123 0.077 - -- 0.05 71 5.92 0.27 0.123 0.076 - -- 0.05 72 6.00 0.27 0.123 0.076 - -- 0.05 73 6.08 0.30 0.138 0.076 - -- 0.06 74 6.17 0.30 0.138 0.075 - -- 0.06 75 6.25 0.30 0.138 0.075 - -- 0.06 76 6.33 0.30 0.138 0.075 - -- 0.06 77 6.42 0.30 0.138 0.074 - -- 0.06 78 6.50 0.30 0.138 0.074 - -- 0.06 79 6.58 0.33 0.154 0.074 - -- 0.08 80 6.67 0.33 0.154 0.073 - -- 0.08 81 6.75 0.33 0.154 0.073 - -- 0.08 82 6.83 0.33 0.154 0.073 - -- 0.08 83 6.92 0.33 0.154 0.072 - -- 0.08 84 7.00 0.33 0.154 0.072 - -- 0.08 85 7.08 0.33 0.154 0.072 - -- 0.08 86- 7.17 0.33 0.154 0.071 - -- 0.08 87 7.25 0.33 0.154 0.071 - -- 0.08 88 7.33 0.37 0.169 0.071 - -- 0.10 89 7.42 0.37 0.169 0.070 - -- 0.10 90 7.50 0.37 0.169 0.070 - -- 0.10 91 7.58 0.40 0.184 0.070 - -- 0.11 92 7.67 0.40 0.184 0.069 - -- 0.11 93 7.75 0.40 0.184 0.069 - -- 0.12 94 7.83 0.43 0.200 0.069 - -- 0.13 95 7.92 0.43 0.200 0.068 - -- 0.13 96 8.00 0.43 0.200 0.068 - -- 0.13 97 8.08 0.50 0.230 0.068 - -- 0.16 98 8.17 0.50 0.230 0.067 - -- 0.16 Page 3 050707HA24100.out 99 8.25 0.50 0.230 0.067 - -- 0.16 100 8.33 0.50 0.230 0.067 - -- 0.16 101 8.42 0.50 0.230 0.067 - -- 0.16 102 8.50 0.50 0.230 0.066 - -- 0.16 103 8.58 0.53 0.246 0.066 - -- 0.18 104 8.67 0.53 0.246 0.066 - -- 0.18 105 8.75 0.53 0.246 0.065 - -- 0.18 106 8.83 0.57 0.261 0.065 - -- 0.20 107 8.92 0.57 0.261 0.065 - -- 0.20 108 9.00 0.57 0.261 0.064 - -- 0.20 109 9.08 0.63 0.292 0.064 - -- 0.23 110 9.17 0.63 0.292 0.064 - -- 0.23 111 9.25 0.63 0.292 0.063 - -- 0.23 112 9.33 0.67 0.307 0.063 - -- 0.24 113 9.42 0.67 0.307 0.063 - -- 0.24 114 9.50 0.67 0.307 0.063 - -- 0.24 115 9.58 0.70 0.323 0.062 - -- 0.26 116 9.67 0.70 0.323 0.062 - -- 0.26. 117 9.75 0.70 0.323 0.062 - -- 0.26 118 9.83 0.73 0.338 0.061 - -- 0.28 119 9.92 0.73 0.338 0.061 - -- 0.28 120 10.00 0.73 0.338 0.061 - -- 0.28 121 10.08 0.50 0.230 0.060 - -- 0.17 122 10.17 0.50 0.230 0.060 - -- 0.17 123 10.25 0.50 0.230 0.060 - -- 0.17 124 10.33 0.50 0.230 0.060 - -- 0.17 125 10.42 0.50 0.230 0.059 - -- 0.17 126 10.50 0.50 0.230 0.059 - -- 0.17 127 10.58 0.67 0.307 0.059 - -- 0.25 128 10.67 0.67 0.307 0.058 - -- 0.25 129 10.75 0.67 0.307 0.058 - -- 0.25 130 10.83 0.67 0.307 0.058 - -- 0.25 131 10.92 0.67 0.307 0.058 - -- 0.25 132 11.00 0.67 0.307 0.057 - -- 0.25 133 11.08 0.63 0.292 0.057 - -- 0.23 134 11.17 0.63 0.292 0.057 - -- 0.24 135 11.25 0.63 0.292 0.056 - -- 0.24 136 11.33 0.63 0.292 0.056 - -- 0.24 137 11.42 0.63 0.292 0.056 - -- 0.24 138 11.50 0.63 0.292 0.056 - -- 0.24 139 11.58 0.57 0.261 0.055 - -- 0.21 140 11.67 0.57 0.261 0.055 - -- 0.21 141 11.75 0.57 0.261 0.055 - -- 0.21 142 11.83 0.60 0.276 0.055 - -- 0.22 143 11.92 0.60 0.276 0.054 - -- 0.22 144 12.00 0.60 0.276 0.054 - -- 0.22 145 12.08 0.83 0.384 0.054 - -- 0.33 146 12.17 0.83 0.384 0.053 - -- 0.33 147 12.25 0.83 0.384 0.053 - -- 0.33 148 12.33 0.87 0.399 0.053 - -- 0.35 149 12.42 0.87 0.399 0.053 - -- 0.35 150 12.50 0.87 0.399 0.052 - -- 0.35 151 12.58 0.93 0.430 0.052 - -- 0.38 152 12.67 0.93 0.430 0.052 - -- 0.38 153 12.75 0.93 0.430 0.052 - -- 0.38 154 12.83 0.97 0.445 0.051 - -- 0.39 155 12.92 0.97 0.445 0.051 - -- 0.39 156 13.00 0.97 0.445 0.051 - -- 0.39 157 13.08 1.13 0.522 0.051 - -- 0.47 158 13.17 1.13 0.522 0.050 - -- 0.47 159 13.25 1.13 0.522 0.050 - -- 0.47 160 13.33 1.13 0.522 0.050 - -- 0.47 161 13.42 1.13 0.522 0.050 - -- 0.47 Page 4 I050707HA24100.out 162 13.50 1.13 0.522 0.049 - -- 0.47 163 13.58 0.77 0.353 0.049 - -- 0.30 164 13.67 0.77 0.353 0.049 0.30 ' 165 13.75 0.77 0.353 ___ 0.049 0.30 166 13.83 0.77 0.353 0.048 - -- 0.30 167 13.92 0.77 0.353 0.048 - -- 0.31 168 14.00 0.77 0.353 0.048 0.31 169 14.08 0.90 0.415 ___ 0.048 0.37 170 14.17 0.90 0.415 0.047 - -- 0.37 171 14.25 0.90 0.415 0.047 - -- 0.37 172 14.33 0.87 0.399 0.047 0.35 ' 173 14.42 0.87 0.399 ___ 0.047 0.35 174 14.50 0.87 0.399 0.046 - -- 0.35 175 14.58 0.87 0.399 0.046 - -- 0.35 176 14.67 0.87 0.399 0.046 0.35 t 177 14.75 0.87 0.399 ___ 0.046 0.35 178 14.83 0.83 0.384 0.045 - -- 0.34 179 14.92 0.83 0.384 0.045 - -- 0.34 180 15.00 0.83 0.384 0.045 0.34 ' 181 15.08 0.80 0.369 ___ 0.045 0.32 182 15.17 0.80 0.369 0.045 - -- 0.32 183 15.25 0.80 0.369 0.044 - -- 0.32 184 15.33 0.77 0.353 0.044 0.31 185 15.42 0.77 0.353 ___ 0.044 0.31 186 15.50 0.77 0.353 0.044 - -- 0.31 187 15.58 0.63 0.292 0.043 - -- 0.25 188 15.67 0.63 0.292 0.043 0.25 189 15.75 0.63 0.292 ___ 0.043 0.25 190 15.83 0.63 0.292 0.043 - -- 0.25 191 15.92 0.63 0.292 0.042 - -- 0.25 192 16.00 0.63 0.292 0.042 - -- 0.25 ' 193 16.08 0.13 - 0.061 0.042 0.02 194 16.17 0.13 0.061 0.042 0.02 195 16.25 0.13 0.061 0.042 - -- 0.02 196 16.33 0.13 0.061 0.041 - -- 0.02 ' 197 16.42 0.13 0.061 0.041 0.02 198 16.50 0.13 0.061 0.041 0.02 199 16.58 0.10 0.046 0.041 - -- 0.01 200 16.67 0.10 0.046 0.041 - -- 0.01 ' 201 16.75 0.10 0.046 0.040 0.01 202 16.83 0.10 0.046 0.040 0.01 203 16.92 0.10 0.046 0.040 - -- 0.01 204 17.00 0.10 0.046 0.040 - -- 0.01 ' 205 17.08 0.17 0.077 0.040 0.04 206 17.17 0.17 0.077 0.039 0.04 207 17.25 0.17 0.077 0.039 - -- 0.04 ' 208 209 17.33 17.42 0.17 0.17 0.077 0.077 0.039 - -- 0.039 0.04 0.04 210 17.50 0.17 0.077 0.039 0.04 211 17.58 0.17 0.077 0.038 - -- 0.04 ' 212. 213 17.67 17.75 0.17 0.17 0.077 0.077 0.038 - -- 0.038 0.04 0.04 214 17.83 0.13 0.061 0.038 0.02 215 17.92 0.13 0.061 0.038 - -- 0.02 216 18.00 0.13 0.061 0.037 - -- 0.02 ' 217 18.08 0.13 0.061 0.037 0.02 218 18.17 0.13 0.061 0.037 0.02 219 18.25 0.13 0.061 0.037 - -- 0.02 220 18.33 0.13 0.061 0.037 - -- 0..02 ' 221 18.42 0.13 0.061 0.037 0.02 222 18.50 0.13 0.061 0.036 0.03 223 18.58 0.10 0.046 0.036 - -- 0.01 224 18.67 0.10 0.046 0.036 - -- 0.01 ' Page 5 050707HA24100.out 243 225 18.75 0.10 0.046 0.036 - -- 0.01 0.10 226 227 18.83 18.92 0.07 0.07 0.031 0.031 0.036 0.035 0.006 0.006 0.03 0.03 0.033 - -- 228 19.00 0.07 0.031 0.035 0.006 0.03 0.07. 229 19.08 0.10 0.046 0.035 - -- 0.01 0.031 230 19.17 0.10 0.046 0.035 - -- 0.01 ' 231 19.25 0.10 0.046 0.035 0.031 0.01 0.00 232 19.33 0.13 0.061 0.035 0.029 - -- 0.03 233 19.42 0.13 0.061 0.035 - -- 0.03 281 234 19.50 0.13 0.061 0.034 - -- 0.03 23.50 235 19.58 .0.10 O.b46 0.034 283 284 0.01 ' 236 19.67 0.10 0.046 0.034 ___ 0.01 0.031 237 19.75 0.10 0.046 0.034 - -- 0.01 0.029 - -- 238 19.83 0.07 0.031 0.034 0.006 0.03 0.00 239 19.92 0.07 0.031 0.034 0.006 0.03 ' 240 20.00 0.07 0.031 0.033 0.006 0.03 241 20.08 0.10 0.046 0.033 - -- 0.01 242 20.17 0.10 0.046 0.033 - -- 0.01 243 20.25 0.10 0.046 0.033 0.01 ' 244 20.33 0.10 0.046 ___ 0.033 0.01 245 20.42 0.10 0.046 0.033 - -- 0.01 246 20.50 0.10 0.046 0.033 - -- 0.01 247 20.58 0.10 0.046 0.032 0.01 ' 248 20.67 0.10 0.046 ___ 0.032 0.01 249 20.75 0.10 0.046 0.032 - -- 0.01 250 20.83 0.07 0.031 0.032 0.006 0.03 251 20.92 0.07 0.031 0.032 0.006 0.03 t 252 21.00 0.07 0.031 0.032 0.006 0.03 253 21.08 0.10 0.046 0.032 - -- 0.01 254 21.17 0.10 0.046 0.032 - -- 0.01 255 21.25 0.10 0.046 0.031 - -- 0.01 ' 256 21.33 0.07 - 0.031 0.031 0.006 0.03 257 21.42 0.07 0.031 0.031 0.006 0.03 258 21.50 0.07 0.031 0.031 0.006 0.03 259 21.58 0.10 0.046 0.031 0.02 ' 260 21.67 0.10 0.046 ___ 0.031 0.02 261 21.75 0.10 0.046 0.031 - -- 0.02 262 21.83 0.07 0.031 0.031 - -- 0.00 263 21.92 0.07 0.031 0.030 - -- 0.00 ' 264 22.00 0.07 0.031 0.030 0.00 265 22.08 0.10 0.046 0.030 0.02 266 22.17 0.10 0.046 0.030 - -- 0.02 267 22.25 0.10 0.046 0.030 - -- 0.02 268 22.33 0.07 0.031 0.030 0.00 269 22.42 0.07 0.031 0.030 0.00 270 22.50 0.07 0.031 0.030 - -- 0.00 m 271 22.58 0.07 0.031 0.030 - -- 0.00 ' 272 22.67 0.07 0.031 0.030 0.00 273 22.75 0.07 0.031 0.030 0.00 274 22.83 0.07. 0.031 0.029 - -- 0.00 275 22.92 0.07 0.031 0.029 - -- 0.00 ' 276 23.00 0.07 0.031 0.029 0.00 277 23.08 0.07 0.031 0.029 0.00 278 23.17 0.07 0.031 0.029 - -- 0.00 279 280 23.25 23.33 0.07 0.07 0.031 0.031 0.029 - -- 0.029 0.00 0.00 281 23.42 0.07 0.031 0.029 0.00 282 23.50 0.07 0.031 0.029 - -- 0.00 283 284 23.58 23.67 0.07 0.07 0.031 0.031 0.029 - -- 0.029 0.00 0.00 285 23.75 0.07 0.031 0.029 0.00 286 23.83 0.07 0.031 0.029 - -- 0.00 287 23.92 0.07 0.031 0.029 - -- Page 6 0.00 m 1 050707HA24100.out 288 24.00 0.07 0.031 0.029 - -- 0.00 Sum = 100.0 Sum = 33.6 Flood volume = Effective rainfall 2.80(In) times area 1.0(AC.) /[(In) /(Ft.)] = 0.2(AC.Ft) Total soil loss = 1.04(In) Total soil loss = 0.085(AC.Ft) Total rainfall = 3.84(In) Flood volume = 9947.1 Cubic Feet Total soil loss = 3713.3 Cubic Feet -------------------7------------------------------------------------ Peak flow rate of this hydrograph = 0.467(CFS) +++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++ 24 - H O U R S T 0 R M R u n o f f H y d r o g r a p h Hydrograph in 5 Minute intervals ((CFS)) Time(h +m) volume AC.Ft Q( CFS)-- 0 -------- 2_5 ------- 5_0 ------- 7_5 - - - -- -10.0 ---------------------- - - - - -- Page 0+ 5 0.0001 0.02 Q 0 +10 0.0003 0.02 Q ' 0 +15 0.0005 0.02 Q 0 +20 0.0007 0.03 Q 0 +25 0.0010 0.04 Q 0 +30 0.0012 0.04 Q 0 +35 0.0015 0.04 Q 0 +40 0.0018 0.04 Q 0 +45 0.0020 0.04 Q 0 +50 0.0023 0.05 Q 0 +55 0.0027 0.05 Q 1+ 0 0.0030 0.05 Q 1+ 5 0.0033 0.04 Q 1 +10 0.0036 0.04 Q ' 1 +15 0.0038 0.04 Q 1 +20 0.0041 0.04 Q 1 +25 0.0043 0.04 Q t 1 +30 1 +35 0.0046 0.0048 0.04 0.04 Q Q 1 +40 0.0051 0.04 Q 1 +45 0.0054 0.04 Q ' 1 +50 1 +55 0.0057 0.0060 0.05 0.05 Q QV 2+ 0 0.0064 0.05 QV 2+ 5 0.0067 0.05 QV t 2 +10 2 +15 0.0070 0.0074 0.05 0.05 QV QV 2 +20 0.0077 0.05 QV 2 +25 0.0081 0.05 QV 2 +30 0.0084 0.05 QV ' 2 +35 0.0088 0.06 QV 2 +40 0.0093 0.06 QV 2 +45 0.0097 0.06 Qv 2 +50 0.0101 0.06 QV 2 +55 0.0105 0.06 Qv 3+ 0 0.0110 0.06 QV 3+ 5 0.0114 0.06 QV 3 +10 0.0118 0.06 Q V 3 +15 0.0123 0.06 Q V ' 3 +20 0.0127 0.06 Q V 3 +25 0.0131 0.06 Q V 3 +30 0.0135 0.06 Q V Page 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 050707HA24100.out 3 +35 0.0140 0.06 Q v 3 +40 0.0144 0.06 Q v 3 +45 0.0148 0.06 Q .V 3 +50 0.0150 0.02 Q v 3 +55 0.0150 0.01 Q v 4+ 0 0.0151 0.01 Q v 4+ 5 0.0151 0.01 Q V 4 +10 0.0152 0.01 Q v 4 +15 0.0152 0.01 Q v 4 +20 0.0154 0.02 Q V 4 +25 0.0155 0.02 Q V 4 +30 0.0157 0.02 Q v 4 +35 0.0159 0.03 Q V 4 +40 0.0161 0.03 Q V 4 +45 0.0162 0.03 Q v 4 +50 0.0165 0.04 Q v 4 +55 0.0168 0.04 Q v 5+ 0 0.0171 0.04 Q V 5+ 5 0.0172 0.02 Q V 5 +10 0.0173 0.01 Q v 5 +15 0.0174 0.01 Q v 5 +20 0.0176 0.03 Q V 5 +25 0.0178 0.03 Q v 5 +30 0.0180 0.03 Q v 5 +35 0.0183 0.04 Q v 5 +40 0.0186 0.04 Q v 5 +45 0.0189 0.05 Q v 5 +50 0.0192 0.05 Q v 5 +55 0.0195 0.05 Q v 6+ 0 0.0198 0.05 Q v 6+ 5 0.0202 0.06 Q v 6 +10 0.0207 0.06 Q v 6 +15 0.0211 0.06 Q V 6 +20 0.0215 0.06 Q V 6 +25 0.0220 0.06 Q v 6 +30 0.0224 0.06 Q v 6 +35 0.0229 0.08 Q v 6 +40 0.0235 0.08 Q v 6 +45 0.0240 0.08 Q V 6 +50 0.0246 0.08 Q v 6 +55 0.0251 0.08 Q V 7+ 0 0.0257 0.08 Q v 7+ 5 0.0262 0.08 Q v 7 +10 0.0268 0.08 Q v 7 +15 0.0273 0.08 Q v 7 +20 0.0280 0.09 Q v 7 +25 0.0287 0.10 Q v 7 +30 0.0293 0.10 Q v 7 +35 0.0301 0.11 Q v 7 +40 0.0309 0.11 Q v 7 +45 0.0317 0.11 Q v 7 +50 0.0325 0.13 Q v 7 +55 0.0334 0.13 Q v 8+ 0 0.0343 0.13 Q v 8+ 5 0.0354 0.15 Q V 8 +10 0.0365 0.16 Q v 8 +15 0.0376 0.16 Q V 8 +20 0.0387 0.16 Q v 8 +25 0.0398 0.16 Q v 8 +30 0.0409 0.16 Q v 8 +35 0.0422 0.17 Q v 8 +40 0.0434 0.18 Q V 8 +45 0.0446 0.18 Q V Page 8 r1 L 050707HA24100.out 8 +50 0.0459 0.19 Q v l I 8 +55 0.0473 0.19 Q v l 9+ 0 0.0486 0.19 Q v l I I 9+ 5 0.0501 0.22 Q v l I 9 +10 0.0517 0.23 Q vl I 9 +15 0.0532 0.23 Q vl I 9 +20 0.0548 0.24 Q vl I I 9 +25 0.0565 0.24 Q vl I 9 +30 0.0582 0.24 Q v I 9 +35 0.0599 0.25 IQ v I I 9 +40 0.0617 0.26 IQ v I I 9 +45 0.0635 0.26 IQ Iv 9 +50 0.0653 0.27 IQ Iv I I 9 +55 0.0672 0.27 IQ Iv I I 10+ 0 0.0691 0.27 IQ I v I I 10+ 5 0.0704 0.19 Q I v I I 10 +10 0.0716 0.17 Q I v 10 +15 0.0727 0.17 Q I v 10 +20 0.0739 0.17 Q I v I I 10 +25 0.0750 0.17. Q I v 10 +30 0.0762 0.17 Q I v I I 10 +35 0.0778 0.23 Q I v 10 +40 0.0795 0.25 Q I v 10 +45 0.0812 0.25 Q I v 10 +50 0.0829 0.25 Q I v I I 10 +55 0.0846 0.25 Q I v I I 11+ 0 0.0863 0.25 Q I v I I 11+ 5 0.0879 0.23 Q I v I 11 +10 0.0895 0.23 Q I v 11 +15 0.0911 0.23 Q I v I 11 +20 0.0927 0.23 Q I v 11 +25 0.0943 0.23 Q I v 11 +30 0.0959 0.23 Q I v 11 +35 0.0974 0.21 Q I v I I 11 +40 0.0988 0.20 Q I v 11 +45 0.1002 0.20 Q I v 11 +50 0.1017 0.22 Q I v I I 11 +55 0.1032 0.22 Q I v 12+ 0 0.1047 0.22 Q I v 12+ 5 0.1068 0.31 IQ I v 12 +10 0.1090 0.33 IQ I VI 1 12 +15 0.1113 0.33 IQ I VI 1 12 +20 0.1136 0.34 IQ I vl 1 12 +25 0.1160 0.34 IQ I v 1 12 +30 0.1183 0.34 IQ I v 1 12 +35 0.1209 0.37 IQ I Iv 1 12 +40 0.1234 0.37 IQ I Iv 1 12 +45 0.1260 0.37 IQ I I v 1 12 +50 0.1287 0.39 IQ I I v 1 12 +55 0.1314 0.39 IQ I I v 1 13+ 0 0.1341 0.39 IQ I I v 1 13+ 5 0.1372 0.45 IQ I I v 1 13 +10 0.1404 0.47 IQ I I v 1 13 +15 0.1436 0.47 IQ I I v 1 13 +20 0.1468 0.47 IQ I I v I 13 +25 0.1500 0.47 IQ I I v 1 13 +30 0.1532 0.47 IQ I I v 1 13 +35 0.1555 0.33 IQ I I v 1 13 +40 0.1576 0.30 IQ I I v 1 13 +45 0.1597 0.30 IQ I I v 1 13 +50 0.1617 0.30 IQ I I v 1 13 +55 0.1638 0.30 IQ I I v 1 14+ 0 0.1659 0.30 IQ I I VI Page 9 050707HA24100.out 14+ 5 0.1683 0.35 IQ I I VI 14 +10 0.1708 0.36 IQ I I VI 14 +15 0.1733 0.36 IQ I I V 14 +20 0.1757 0.35 IQ I I V 14 +25 0.1781 0.35 IQ I I IV 14 +30 0.1805 0.35 IQ I I IV 14 +35 0.1829 0.35 IQ I I I V 14 +40 0.1854 0.35 IQ I I I V 14 +45 0.1878 0.35 IQ I I I V 14 +50 0.1901 0.34 IQ I I I V 14 +55 0.1924 0.33 IQ I I I V 15+ 0 0.1947 0.33 IQ I I I V 15+ 5 0.1969 0.32 IQ I I I V 15 +10 0,.1991 0.32 IQ I I I V 15 +15 0.2013 0.32 IQ I I I V 15 +20 0.2035 0.31 IQ I I I V 15 +25 0.2056 0.31 IQ I I I V 15 +30 0.2077 0.31 IQ I I I V 15 +35 0.2094 0.26 IQ I I I V 15 +40 0.2111 0.25 Q I I I V 15 +45 0.2128 0.25 Q I I I V 15 +50 0.2145 0.25 Q I I I V 15 +55 0.2162 0.25 Q I I I V 16+ 0 0.2179 0.25 Q I I I V 16+ 5 0.2183 0.06 Q I I I V 16 +10 0.2185 0.02 Q I I I V 16 +15 0.2186 0.02 Q I I I V 16 +20 0.2187 0.02 Q I I I V 16 +25 0.2189 0.02 Q I I I V 16 +30 0.2190 0.02 Q I I I V 16 +35 0.2191 0.01 Q I I I V 16 +40 0.2191 0.01 Q I I I V 16 +45 0.2192 0.01 Q I I I V 16 +50 0.2192 0.01 Q I I I V 16 +55 0.2192 0.01 Q I I. I V 17+ 0 0.2193 0.01 Q I I I V 17+ 5 0.2195 0.03 Q I I I V 17 +10 0.2197 0.04 Q I I I V 17 +15 0.2200 0.04 Q I I I V 17 +20 0.2203 0.04 Q I I I V 17 +25 0.2205 0.04 Q I I I V 17 +30 0.2208 0.04 Q I I I V 17 +35 0.2210 0.04 Q I I I V 17 +40 0.2213 0.04 Q I I I V 17 +45 0.2216 0.04 Q I I I V 17 +50 0.2217 0.03 Q I I I V 17 +55 0.2219 0.02 Q I I I V 18+ 0 0.2221 0.02 Q I I I V 18+ 5 0.2222 0.02 Q I I I V 18 +10 0.2224 0.02 Q I I I V 18 +15 0.2226 0.02 Q I I I V 18 +20 0.2227 0.02 Q I I I V 18 +25 0.2229 0.02 Q I I I V 18 +30 0.2231 0.02 Q I I I V 18 +35 0.2232 0.01 Q I I I V 18 +40 0.2232 0.01 Q I I I V 18 +45 0.2233 0.01 Q I I I V 18 +50 0.2235 0.02 Q I I I V 18 +55 0.2236 0.02 Q I I I V 19+ 0 0.2238 0.02 Q I I I V 19+ 5 0.2239 0.01 Q I I I V 19 +10 0.2240 0.01 Q I I I V 19 +15 0.2240 0.01 Q I I I V Page 10 ' 050707HA24100.out 19 +20 0.2242 0.02 Q 19 +25 0.2244 0.03 Q I 19 +30 0.2246 0.03 Q I I I 19 +35 0.2247 0.01 Q I I I 19 +40 0.2248 0.01 Q I I I 19 +45 0.2248 0.01 Q I I I 19 +50 0.2250 0.02 Q I I I 19 +55 0.2252 0.02 Q I I I 20+ 0 0.2253 0.02 Q I I I 20+ 5 0.2254 0.01 Q 20 +10 0.2255 0.01 Q I I 20 +15 0.2256 0.01 Q I I I 20 +20 0.2257 0.01 Q I I I 20 +25 0.2258 0.01 Q I I I 20 +30 0.2259 0.01 Q 20 +35 0.2260 0.01 Q I I I 20 +40 0.2261 0.01 Q 20 +45 0.2262 0.01 Q 20 +50 0.2263 0.02 Q 20 +55 0.2265 0.02 Q I I 21+ 0 0.2267 0.02 Q 21+ 5 0.2268 0.02 Q 21 +10 0.2269 0.01 Q 21 +15 0.2270 0.01 Q 21 +20 0.2271 0.02 Q 21 +25 0.2273 0.02 Q I 21 +30 0.2275 0.02 Q 21 +35 0.2276 0.02 Q I I I 21 +40 0.2277 0.02 Q 21 +45 0.2278 0.02 Q 21 +50 0.2278 0.00 Q I I I 21 +55 0.2278 0.00 Q I I I 22+ 0 0.2278 0.00 Q I I I 22+ 5 0.2279 0.01 Q I I 22 +10 0.2280 0.02 Q I I I 22 +15 0.2281 0.02 Q 22 +20 0.2282 0.00 Q I I 22 +25 0.2282 0.00 Q 22 +30 0.2282 0.00 Q 22 +35 0.2282 0.00 Q I I I 22 +40 0.2282 0.00 Q I I I 22 +45 0.2282 0.00 Q I 22 +50 0.2282 0.00 Q I I 22 +55 0.2282 0.00 Q 23+ 0 0.2282 0.00 Q I I 23+ 5 0.2282 0.00 Q I I 23 +10 0.2282 0.00 Q I I 23 +15 0.2282 0.00 Q I I 23 +20 0.2283 0.00 Q 23 +25 0.2283 0.00 Q I I 23 +30 0.2283 0.00 Q I I 23 +35 0.2283 0.00 Q I I 23 +40 0.2283 0.00 Q I 23 +45 0.2283 0.00 Q I I 23 +50 0.2283 0.00 Q I I 23 +55 0.2283 0.00 Q I 24+ 0 0.2284 0.00 Q I I 24+ 5 0.2284 0.00 Q I I I ----------------------------------------------------------------- - - - - -- Page 11 v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v J 7 0 0 n its ° S6,1 i hality Location Maps Other Info. I GIS data I Maps I Help 1 Does Precipitation Frequency Estimates (inches) ARIA [Z�[;gjZ,370,760 120 F�3r 6� Fh 2 24 48 4][7 10 20 30 45 60 min min min 6 r hr hr day day day day day day 11 day I 10.12 0.18 0.22 0.30 0.37 0.49 0.57 0.77 0.95 1.06 1.20 1.33 1.46 1.53 1.64 1.80 2.04 2.24 0.19 0.29 0.36 0.48 0.59 0.78 0.89 1.17 1.42 1.62 1.86 2.07 2.27 2.39 2.56 2.81 3.18 3.51 10 0.25 0.39 0.48 0.64 0.80 1.01 1.15 1.48 1.79 2.07 2.42 2.67 2.91 3.08 3.28 3.59 4.04 4.48 25 0.36 0.54 0.67 0.91 1.12 1.38 1.54 1.94 2.30 2.72 3.24 3.55 3.84 4.07 4.29 4.69 5.24 5.82 50 0.45 0.69 0.85 1.14 1.42 1.71 1.88 2.31 2.71 3.26 3.94 4.29 4.63 4.90 5.14 5.53 6.19 6.90 100 0.56 0.85 1.06 1.43 1.76 2.10 2.26 2.73 3.15 3.84 4.72 5.13 5.48 5.81 6.06 6.54 7.21 8.05 200 0.69 1.05 1.31 1.76 2.18 2.54 2.70 3.18 3.63 4.47 5.60 6.06 6.41 6.80 7.04 7.57 8.29 9 27 500 0.90 1.37 1.70 2.29 2.83 3.21 3.36 3.86 4.30 5.40 6.92 7.44 7.78 8.27 8.47 9.04 9.81 1G.99 1000 1.09 1.66 2.06 2.77 3.44 3.82 3.94 4.42 4.86 6.18 8.06 8.61 8.92 9.49 9.65 10.25 11.02 12.38 I= v S a v ' R O +' N .Q U N i a 0 I Text version of table These precipitation frequency estimates are based on a partial duration series. ARI is the Average R,currence Interval. Please refer to the documentation for more information. NOTE: Formatting forces estimates near zero -,o appear as zero. 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Partial duration based Point Precipitation Frequency Estimates Versicn: 3 33.7086 N 116.2153 W 13 ft u C u r C 1] I 0 Partial duration based Point Precipitation Frequency Estimates Versicn: 3 33.7086 N 116.2153 W 13 ft 13 r I i I dp T _ + N 5 4 j a �.� ,..._... __.._.. .._....,..._. _._..i..__ 0 i £ £ E L i i L L L i. L i 7+ D� 7+ 7+ 7+ 7+ 7 T T T I £ £ £ £ £ £ £ £ M M M M M M M M M M E E E E E E@ I I I I I I I I 1 � 7 Zf _7 "a "U "0 -0 �3 ZS I 1 I I I I N M V 1D 00 N OD V ID {0 1 I 1 I I I I I I U7 �9 Ifi 9 9 S -+ -+ •-+ Cu M V M V .1 11 9 N 9 9 If) 9 Duration - N M V 0 Mon Feb 20 16:43 :43 2006 Average Recurrence Interval (years) 2 100 - 5 -1- 200 -6- 10 8 500 -+- 25 -x 1000 -�- Confidence Limits - x Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARI'* 5 Z10 15 30 60 120 7hr 6 7hr 24 48 4 7 10 (years) min min min min min hr hr hr day day day day day day day 0 0.15 0.22 0.28 0.37 0.46 0.60 0.70 0.94 1.16 1.25 1.39 1.56 1.67 1.77 1.89 2.07 2.35 2.56 0.23 0.35 0.44 0.59 EE 0.94 1.07 1.44 1.73 1.91 2.15 2.42 2.59 2.76 2.93 3.23 3.65 4.03 10 0.31 0.47 0.58 0.79 0.97 1.22 1.40 1.82 2.18 2.44 2.78 3.11 3.30 3.54 3.76 4.11 4.65 5..4 25 0.43 0.66 0.82 EE E3fl 1.66 1.87 Efl 2.79 3.21 3.75 4.15 4.37 4.68 4.96 5.33 6.01 6.67 50 0.55 0.83 1.03 1.39 1.72 2.06 2.27 2.83 3.30 3.85 4.55 5.02 5.26 5.65 5.93 6.42 7.11 7.91 100 0.68 1.04 1.29 1.74 2.15 2.52 2.74 3.37 3.85 4.57 5.47 6.03 6.30 6.69 6.97 7.53 8.30 9.27 200 0.84 1.28 1.59 2.14 2.65 3.05 3.30 3.93 4.44 5.36 6.53 7.14 7.42 7.92 8.16 8.84 9.60 10.72 500 1.10 1.68 2.08 2.80 3.47 3.90 4.15 478 17 5.30 6.53 8.16 8.88 9.10 9.69 F9 9 67 10.52 11.48 12.78 D0K EE 2E EE EE E.2fl EE 4.89 EE KE 7.50 EE 10.34 10.64 11.22 1.1.41 12.16 1EE 14.5 J The upper bound of the confidence interval at 90% confidence level is the value which 5% of the simulated quantila 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. Please refer to the documentation for more information. NOTE: Formatting prevents estimates near zero to appear as zero. * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) AR1 ** ❑5 [;gj 15 30 60 g12 0 ❑3 Fh6r] 12 24 r4hr 8 ❑4 10 20 30 4_5 ti0 (years) mm mm min min m hr hr hr day day day 11 day 11 Jaylldayll day �nnnn�nnnnnn�n��nnn C �l F� 1 2 J 0 10 110 .15 110 .18 110 .24 110 .30 110 .40 110 .48 110 .63 110 .78 110 .91 L.-o411, 15 11, .26 11, .33 1.43 1.57 1.7711, ?3 L ' J OF] 57 0.23 0.29 0.39 0.48 1 0.64 0.73 0.96 1.16 1.41 1.62 1.78 1.94 2.07 2.22 2.47 2.74 3.02 10 0.20 0.31 0.39 0.52 0.64 0.83 0.94 1.21 1.44 1.79 2.08 2.30 2.49 2.65 2.83 3.13 3.47 3.33 2 57 0.28 0.43 0.53 0.72 0.89 1.12 1.25 1.56 E E 273 27 2.76 3.04 3.25 3.47 3.67 4.08 4.47 4.)6 50 0.35 0.54 0.67 0.90 1.11 1.36 1.50 1.85 2.15 2.75 3.31 3.64 3.87 4.13 4.37 4.82 5.27 5.34 100 0.43 0.65 0.81 1.09 1.35 1.64 1.78 2.15 2.47 3.21 3.92 4.29 4.56 4.84 5.10 5.61 6.l ] 6.70 200 0.52 0.78 0.97 1.31 1.62 1.94 2.09 2.47 2.81 3.68 4.58 4.97 5.24 5.60 5.85 6.41 6.95 7.70 500 0.65 0.99 1.22 1.65 2.04 2.38 2.52 2.92 3.26 4.38 5.56 6.00 6.23 6.69 6.90 7.55 8.12 8.)9 1000 0.76 1.16 1.44 1.94 2.40 2.75 2.88 3.29 3.62 4.92 6.35 6.82 7.05 7.58 7.75 8.44 9.02 1C.03 The lower bound of the confidence interval at 90% confidence lev I is the value which 5% of the simulated quantile values for a given frequency are less than. " These precipitation frequency estimates are based on a partial 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. Other Maps/Photographs - kow USGS digital orthophoto quadran I_g e (DOQ� covering this ocation from "TerraServer; USGS AErial Photog,aph may also be --`�. LEGEND State - Connector County ® Stream Indian Resv Military Area ' laj Cr Lake /PondfOccean National Park -- Street Other Park FL F nL _. - -- Expressway City �.. a - Highway County 10 12 Id 16 J8 Mi ' h 1 Scale 1:220503 10 4 5 8 g0 km *average- -true depends resolution L I scale on monitor 11 F, ,3"W lir -i"Ut Other Maps/Photographs - kow USGS digital orthophoto quadran I_g e (DOQ� covering this ocation from "TerraServer; USGS AErial Photog,aph may also be ' from 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 removed. It combines the image characteristics of a photograph with the geometric qualities of a map. Visit the National Digital Orthophoto Program (NDOP) for more information. Watershed /Stream Flow Information - ' Find the Watershed for this location using the U.S. Environmental Protection Agency's site. ' Climate Data Sources - Precipitation frequency results are based on data from a variety of sources, but largely NCDC. The following links provide general ' information about 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. Using the National Climatic Data Center's (NCDC) station search engine, locate other climate stations within: +/ 30 minutes ...OR... ,=de, gree of this location (33.7086/- 116.2153). Digital ASCII data can be obtained ' directly from NCDC. -.�.. Hydrometeorological Design Studies Center DOC/NOAA/National Weather Service 1325 East -West Highway ' Silver Spring, MD 20910 (301) 713 -1669 Questions ?: FIDSC.Ouestions noaa.gov ' Disclaimer "STORMTRAP" VOLUME CALCULATION 1 GSG7.°7 5TO H M T �� y�C v�r C L s P � f� rIysi olyf S' x G' x 130 33 C S TO g AG r v of L; o C> Ti f1( D1NI ENSI dKS 9-ETEN7- 10H von v rI r = qjj -17,C UNIT 57-0t ,40 6 &lo0G F -� L/N1 js NC- rDF P = VSO d (lows o f l a (� H/ TS = ' Q L 1 26w o (3 c/ NITS f EXHIBITS I 2 I 1 I = I 3 Training Dike L Taw ZONE X ' ( AVENIDA ALVARADO CALLE ' yUC AN IZON EA ' 4 I Q� CiALt:i � —.0 O O.. Y Ir W N O Q x D 't 4 11 d It D V D _ Q CA z` CALL£ D SONOIRR a a B¢ar CY¢ek W W W Id W 1Channel > ' K 100 YEAR a a FLOOD AGE A { CONTAINED IN D ! TEZ11718.A ' CHANNEL I W I _ 46 CA ZONE A M I cA� 1 _ - AVENIDA MADERO�� AVENIDA JUAREZ 1 >x f ut > > > Q W—, � 4 ZONE X C �LLE MAZATLAN L ' F PJ�C y CALLE FE LI PE RM109 3T ZONE... MWEMI r.: KEY TO STREETS 1 CALLE FORTUNA 2 CALLE CADIZ 3 CALLE BARCELONA 4 CALLE GUATEMALA 5 CALLE HUENEME 6 CALLE ILOILO 7 CALLE JACUMBA 8 CALLE KALMIA ZONE X \~ 100 YEAR FLOOD CONTAINED IN CONDUIT ZcvE A JOINS PANEL 0010 AVEAI DA NARANJA VENIDA LA JARITA O 4A ZONE X APPROXIMATE SCALE IN FEET 1000 0 1000 This is an official copy of a portion of the above referenced flood map. It was extracted using F-MIT On -Line. This map does not reflect changes or amendments which may have been made subsequent to the date on the title block. For the latest product information about National Flood Insurance Program flood maps check the FEMA Flood Map Store at www.mse.fema.gc �( NATIONAL FLOOD INSURANCE PROGRAMI FIRM FLOOD INSURANCE RATE MAP CITY OF LA QUINTA, .CALIFORNIA �i RIVERSIDE COUNTY This is an official copy of a portion of the above referenced flood map. It was extracted using F-MIT On -Line. This map does not reflect changes or amendments which may have been made subsequent to the date on the title block. For the latest product information about National Flood Insurance Program flood maps check the FEMA Flood Map Store at www.mse.fema.gc M Fri'"( 3/ ?/0 6 DATE: FEBRUARY 16, 2006 FROM: COMMUNITY DEVELOPMENT DEPARTMENT X City Manager X Public Works Department X Building & Safety Community Services BIA - Desl rt Council_ Chamber of Commerce • imperial Irrigation District • Southern California Gas • Desert Sands School District CV Unified School District • Coachella Valley Water District • CV Parks/Recreation District Other: X Waste Management X US Postal Service X Verizon X Time Warner Cable X Sunline Transit Caltrans (District 8) Agricultural Commission City of.Indian Wells City of Indio City of Palm Desert CV Mountain Conservancy CV Archaeological Society CITY OF LA QUINTA COMM DE opME NT Riverside County: X Fire Marshal — Indio Fire X Fire Battalion Chief X Sheriff X MSAG Environmental Health Planning Dept. La Ouinta CDD Staff: X CD.Director • Planning Manager • Principal Planner(s) - SS / FB • Associate Planner - AM X Assistant Planner - JW CASE NUMBER(S): EA 2005 -552, SP 2005 -076, VUP 2005 -030 20 UNIT CONDO COMPLEX - CASA LA QUINTA PROJECT DESCRIPTION: SEE ATTACHED PROJECT APPLICATION PROJECT LOCATION: SOUTI4 SIDE OF CALLE TAMPICO; BOUNDED BY ~AVENIDA VILLA AN. ND AVENIDA NAVARRO, IN THE VILLAGE AT LA QUINTA This Project is subject to environmental review under CEQA (California Environmental Quality Act; PRC 21080). Your comments /recommendations are requested regarding any measures or conditions: a) that you or your agency believes would mitigate any potential concerns; b) that should apply to this proposal, or; c) to satisfy other regulations and concerns for which your agency is responsible. Please send your response to the City of La Quinta, Community Development Department,. c/o Wally Nesbit, Associate Planner, P.O. Box 1504, 4a Quinta, CA 92253 by MARCH 6. 2006. Please attach your response to this form and return. If comments were made on the original project, they are attached for reference. You may also e-mail comments or questions to wnesbit @la- quinta.org.. Comments will be considered during all phases of project review. Comments made by' r'[4 P`� Title: Date: Phone: Agency/Division: Attachments a° o .�, eERMUOA OuNES r RANCHO MIRAGE C Q INOtAN WELI6 '0 = DESER cs T Y • LA OUINTA �a #0 IN010 y� February 24, 2006 Desert Sands. Unified School District 47 -950 Dune Palms Road • La 9uinta, California 92253 • (760) 777 -4200 Wally Nesbit, Associate Planner City of La Quinta Community Development Department P.O. box 1504 La Quinta, CA 92253 ►' 1 1 2006 - CITY QP LA QVINTA COMMUNITY DEVELOPMENT DEPARTMENT Request for Comments: Casa LaQuinta - EA 2005 -552, SP 2005 -076, VUP 2005 - 030.20 Unit Condo Complex on the south side of Calle Tampico, between Avenida Villa and Avenida Navarro. Dear Mr. Nesbit, This. is in response to your request for input on the above referenced project and its effect on public schools. All actions toward residential development will potentially, result in an impact on our school system. School overcrowding is a District-wide concern for. Desert Sands Unified School District The Districts ability to meet the educational needs of the public with new schools has been seriously impaired in recent years by local, state and federal budget cuts that have had a devastating impact on the financing of new schools. As you are aware, there is a school mitigation fee that is currently collected on all new development at the time building permits are issued. Please feel free to call me if you have further questions. Thank you. Sincerely, Peggy Davis, Director Facilities Services PD /sm Message Wally Nesbit From: Knox, Don [don.knox @twcable.com] Sent: Tuesday, February 28, 2006 11:11 AM To: Wally Nesbit Subject: Casa La Quinta - Request For Comment RE: CASE NUMBERS: EA 2005 -552 SP 2005 -076 VUP 2005 -030 0" OM It May Concern: Q, We have`cable television sytem adjacent to this.proposed project. Designer Time Warner Cable 02/28/2006 Page 1 of 1 a��a• OF FOR COMMENT DATE: MARCH 2, 2006 FROM: COMMUNITY DEVELOPMENT DEPARTMENT • City Manager • Public Works Department • Building & Safety Community Services BIA - Desert Council_ Chamber of Commerce • Imperial Irrigation District • Southern California Gas • Desert Sands School District CV Unified School District • Coachella Valley Water District X CV Parks/Recreation District Other: X Waste Management X US Postal Service X Verizon X Time Warner Cable X Sunline Transit Caltrans (District 8) Agricultural Commission City of Indian Wells City of Indio City of Palm Desert CV Mountain Conservancy CV Archaeological Society I E C MAR 0 7 20U CITY OF LA GQUIN "! ` COMMUNITY DEVELOrrvIENT DEPARTMENT _ Riverside County: . • Fire Marshal — Indio Fire • Fire Battalion Chief • Sheriff X MSAG Environmental Health Planning Dept. La Ouinta CDD Staff - • CD Director • Planning Manager • Principal Planner(s) - SS / FB X Associate Planner - AM' X Assistant Planner - JW CASE NUMBER(S): TT 34038 - 20 UNIT CONDO COMPLEX - CASA LA QUINTA (THIS APPLICATION GOES WITH PRIOR TRANSMITTAL OF 2/16/06) PROJECT DESCRIPTION: SEE PROJECT APPLICATIONS SENT FOR THIS PROJECT ON 2/16/06 PROJECT LOCATION: SOUTH SIDE OF CALLE TAMPICO, BOUNDED BY AVENIDA - VILLA AND AVENIDA NAVARRO, IN THE VILLAGE AT LA QUINTA This Project is subject to environmental review under CEQA (California Environmental Quality Act; PRC 21080). Your comments /recommendations are requested regarding any measures or conditions: a) that you or your agency believes would mitigate any potential concerns; b), that should apply to this proposal, or; c) to satisfy other regulations and concerns for which your agency is responsible'. Please send your response to the City of La Quinta, Community Development Department, c/o Wally Nesbit, Associate Planner, P.O. Box 1504, I a Quinta, CA 92253 by MARCH 16, 2006. Please attach your response to this 'form nts wer orm and return. If comme made on the original project,. ..they are attached for reference. You may also e-mail comments or questions to wnesbit @la - quinta.org. Comments will be considered during all phases of project review. *. *NOTE: PLEASE SEND ANY ADDITIONAL CONCERNS RELATED TO THIS PART OF THE OVERALL APPLICATION SENT PREVIOUSLY. IF NOTHING FURTHER, PLEASE VERIFY THAT TO US Comments made b Title: Date: Phone: Agency/Division: Attachments 0`` ,o / G� v [REQUESTPOR COMMENT OF r DATE: MARCH 2, 2006 FROM: COMMUNITY DEVELOPMENT DEPARTMENT • City Manager • Public Works Department • Building & Safety . Community Services BIA - Desert Council Chamber of Commerce • Imperial Irrigation District • Southern California Gas • Desert Sands School District CV Unified School District • Coachella Valley Water District X CV Parks/Recreation District Other: X Waste Management X US Postal Service X Verizon X Time Warner Cable X Sunline Transit Caltrans (District 8) Agricultural Commission City of Indian Wells City of.Indio City of Palm Desert CV Mountain Conservancy CV Archaeological Society ki`[Ec�r�od� D MAR a, zoo. CITY OF LA QUIN'' COMMUNITY DEVELOHvIENT DEPARTMENT Riverside County: • Fire Marshal — Indio Fire • Fire Battalion Chief • Sheriff X MSAG Environmental Health Planning Dept. La Quinta CDD Staff: X CD Director • Planning Manager • Principal Planner(s) - SS / FB • Associate Planner - AM • Assistant Planner - JW CASE NUMBER(S): TT 34038 - 20 UNIT CONDO COMPLEX - CASA LA QUINTA (THIS APPLICATION GOES WITH PRIOR TRANSMITTAL OF 2/16/06) PROJECT DESCRIPTION: SEE PROJECT APPLICATIONS SENT FOR THIS PROJECT ON 2/16/06 PROJECT LOCATION: SOUTH SIDE OF CALLE TAMPICO, BOUNDED BY AVENIDA VILLA AND AVENIDA NAVARRO, IN THE VILLAGE AT LA QUINTA This Project is subject to environmental review under CEQA (California Environmental Quality Act; PRC 21080). Your comments /recommendations are requested regarding any measures or conditions: a) than you or your agency believes would mitigate any potential concerns; b) that should apply to this proposal, or; c) to satisfy other regulations and concerns for which your agency is responsible'. Please send your response to the City of La Quinta, Community Development Department, c/o Wally Nesbit, Associate Planner, P.O. Box 1504, Ida Quinta, CA 92253 by MARCH 16, 2006. Please attach your response to this form and return. If comments were made on the original project,.they are attached for reference. You may also e-mail comments or questions to wnesbit @la- quinta.org. Comments will be considered during all phases of project review. *. *NOTE: PLEASE SEND ANY ADDITIONAL CONCERNS RELATED TO THIS PART OF THE OVERALL APPLICATION SENT PREVIOUSLY. IF NOTHING FURTHER, PLEASE VERIFY THAT TO US Comments made by/ Y / &t —6 Title:. Date: Phone: Agency/Division: Attachments MAR706- 2006.MON 12:18 PM SUNLINE TRANSIT FAX N0, 760 343 3845. P. 02 1� sun. rn MEMBERS: Desert Noe Springs palm Springr Cathedral City Roneho Mlrege jp A N D I / A s l N C Y Palm Oesert Indian Wells to Quint* Indio Cooehella Riverside County A Public Agency March 6, 2006 Mr. Wally Nesbit, Associate Planner City of La Quinta Community Development Department P.O. Box 1504 La Quinta, CA 92253 RE: 'EA 2005 -552/ SP 2005 -076/ VUP 2005 -030 - Casa La Quinta Dear Mr. Nesbit: This letter responds to your. request. for comments regarding the proposed 20 -unit condominium project located south of Calle Tampico, bounded by Avenida Villa and Avenida Navarro. The SunLine Transit Agency (SunLine) staff has reviewed the project application and offers the following comments. Based on further review, SunLine. is not requesting inclusion of transit amenities in the proposed development at this time. We currently provide transit service along Calle Tampico, with the closest bus stop located on Avenida Bermudas and . Avenida La Fonda. SunLine recommends that sidewalks be constructed in all areas fronting the project site to ensure that future residents are able to access services offered in the neighborhood. Please feel free to contact me at 760- 343 -3456, ext. questions regarding this letter. Sincerely, cf�to v i Eunice Lovi Director of Planning EL/amp cc: C. Mikel Oglesby, General Manager 119., if you have any concerns or 32 -50S Harry Oliver Trail, Thousand Palms, California 92276 Phone 760 -343 -3456 fax 760 - 343 -3845 www.sontine.org 6760 391 9614 11:18:34 a.m. 03 -07 -2006 1 /1 a, ECE1V �W oo MAR 6 2006 QUEST FOR COMMENT F C. . W.Di DATE: MARCH 2, 2006 FROM: COMMUNITY DEVELOPMENT DEPARTMENT )C City Manager • Public Works Department • Building & Safety Community Services BIA - Desert Council - Chamber of Commerce • Imperial Irrigation District • Southern California Gas • Desert Sands School District CV Unified School District • Coachella Valley Water District • CV Parks/Recreation District Other: X Waste Management X US Postal Service X Verizon X Time Warner Cable X Sunline Transit Caltrans (District 8) Agricultural Commission City of Indian Wells City of Indio City of Palm Desert CV Mountain Conservancy CV Archaeological Society File: .0163.1 - 060601 -4. Riverside County: X Fire Marshal -Indio Fire _X _Fire Battalion Chief X Sheriff X MSAG Environmental Health Planning Dept. La Ouinta CDD Staff: X CD Director X Planning Manager • Principal Planner(s) - SS / FB • Associate Planner -AM • Assistant Planner - JW CASE NUMBER(S): TT 34038 - 20 UNIT CONDO COMPLEX - CASA LA QUINTA (THIS APPLICATION, GOES WITH PRIOR TRANSMITTAL OF 2/16/.06). PROJECT DESCRIPTION: SEE PROJECT APPLICATIONS SENT FOR THIS PROJECT ON 2/16/06 PROJECT LOCATION: SOUTH SIDE OF CALLE TAMPICO, BOUNDED BY AVENIDA VILLA AND AVENIDA NAVARRO, IN THE VILLAGE AT LA QUINTA This Project is subject to environmental review under CEQA (California Environmental Quality Act; PRC 21080). Your comments/recommendations are requested regarding any measures or conditions: a) that you or your agency believes would mitigate any potential concerns; b) that should apply to this proposal, or; c) to satisfy other regulations and concerns for which your agency is responsible. Please send your response to the City of La Quinta, Community Development Department, c/o Wally Nesbit, Associate Planner, P.O. Box 1504, La Quinta, CA 92253 by MARCH 16, 2006. Please attach your response to this form and return. If comments were made on the original project, they are attached for reference. You may also e-mail comments or questions to wnesbit @la- quinta.org. Comments will be considered during all phases of project review. "NOTE: PLEASE SEND ANY ADDITIONAL; CONCERNS RELATED TO THIS PART OF THE OVERALL APPLICATION SENT PREVIOUSLY. IF NOTHING FURTHER, PLEASE VERIFY THAT TO US Comments made by J�t��,� Pi �� Title: S'DyyVkVk&'y �1 . Date: phone:S Agency/Division: Attachments fmy .av CSt1titua5 1414 �� 1. �fl -use SCA, ,�.; : JED �>✓Ln� March 7, 2006 CITY OF LA QUINTA LA QUINTA POLICE 82 -695 M CARREON BLVD., INDIO CA. (760) 863 -8990 Mr. Wally Nesbit, Associate Planner City of La Quinta P.O. Box 1604 La Quinta, California 92253 RE: TT 34038 / EA #2005 -552 Dear Mr. Nesbit, Thank you for the opportunity'to comment on the above described project. After reviewing the plans, there are no issues of concern related to public safety and law enforcement at this time related to this part of the overall application. I have attached a copy of my correspondence of February 28, 2006.detailing law enforcement concerns related 'to the overall development. Should the Community Development Department, developer or construction staff have any questions regarding this project, please contact Community Services Officer Thomas Fowler at 760 - 863 -8950. Sincerely, Walter Meyer, Captain Chief of Police , February 28, 2006 Mr. Wally Nesbit, Associate Planner City of La Quinta P.O. Box 1504 La Quinta, CA 92253 QQ P� RE: Village Use Permit #2005 -030 (Casa La Quinta) Environmental Assessment #2005 -552 Specific Plan #2005 -076 The proposed development of a 20 -unit condominium project on 1.23 acres in the Village.at La Quinta. Dear Mr. Nesbit,''' Thank you for the opportunity to comment on the above described plan. The following issues of concern related to public safety and law enforcement are presented. . Studies show that in both urban and suburban environments, parking structures are the most problematic and are known to be likely settings for crime. Many parking structures are not only poorly designed -with many blind spots and hiding areas —but poorly - maintained as well. Crime Prevention Through Environmental Design ( CPTED) guidelines can do much in the way of improving parking structure safety without excessive cost. The following CPTED guidelines are recommended: Natural Access Control Use digital cameras. and sound monitors that record vehicles entering and leaving the parking structure. Indicate the presence of the cameras with posted signs. 2. Limit access to no more than two designated, monitored entrances. Position all, pedestrian entrances next to vehicle entrances but design the entrances to clearly'define and separate each as to avoid potential vehicle /pedestrian conflicts. 3. Construct stairwells to be open and visible, without solid. walls. 4. Place elevators close to the main entrance, with the entire interior in view when the doors are open. Do not install permanent stop buttons in elevators. Natural Surveillance 1. Digital cameras should also be located within the parking structure to keep parked vehicles under surveillance and observe any trespassing or loitering. Indicate the presence of the cameras with posted signs. 2. Fully illuminate all parking spaces and driving lanes. Lighting is the' most critical safety and security feature to' be incorporated in a parking structure's design. 3. Monitor elevators with cameras and microphones or use see - through materials for the elevator walls. 4. Install mirrors to allow people to see around corners into any hidden spaces that cannot be eliminated in the original design. Territorial Reinforcement 1. Individual parking spaces should be numbered so the exact location of vehicle thefts and break -ins can be reported. Resident/unit numbers should not be used because an empty space might indicate an empty or unoccupied residence. Maintenance 1. Keep all surfaces clean and light colored to reflect light. Parking structures should have glossy white or light- colored walls and ceilings. This is particularly important for an underground parking structure. 2. Diligently maintain all lighting equipment. I am enclosing a copy of a U. S. Department of Justice research document addressing the topic of: "Crime Prevention Through Environmental Design in Parking Facilities" Whereas this document speaks to a broad spectrum of r °.v parking facilities, it offers clear CPTED principles that when incorporated can significantly reduce the fear of crime and enhance the quality of life for the residents of the Casa La Quinta development. I would encourage the implementation of the CPTED principles in the continued development of this project. In addition, the following issues of concern related to public safety and law enforcement are also presented. ❖ CONSTRUCTION SITE Prior to construction on any structure, a material storage area should be established and enclosed by a six foot chain link fence to minimize theft of materials and /or equipment. It is recommended that a list of serial and /or license numbers of equipment stored at the location be maintained both, at the site and any off -site main office. Thefts and burglaries of building materials, fixtures, and appliances from construction storage areas and structures under construction are on the rise. To reduce thefts and burglaries during the construction of this project, the developer and builder need to provide site security. The La Quinta Police Department recommends the developer and builder use bonded security guards licensed by the State of California Bureau of Security & Investigative Services Department to handle, project security. The public, and non - essential employees, should be restricted in access to the construction areas.* Current emergency contact information for the project should be kept on file with the La Quinta Police Department. --The-developer. and/or builders' name; address-and phone number should be conspicuously posted at the construction site. Visibility into the construction site should not be intentionally hampered. Areas actually under construction should be lit during hours of darkness. All entrances and exits should be clearly marked. ❖ ADDRESSING: An address monument should be erected. The monument should be illuminated during the hours of darkness and positioned so as to be readable from main vehicular or pedestrian access points. Positioning the address numbers at a strategic and elevated section of the building will facilitate unhampered views of the address from vehicular and pedestrian vantage points. Roof -top addressing, (for use by the police helicopter), should be applied in a contrasting color. A minimum lettering size of V X 4' should be utilized. In the event of.a critical incident at the location, the use of roof -top addressing . accelerates a pinpoint response from law enforcement air support and the accurate mobilization of ground units. Industrial and commercial buildings shall have the doors clearly marked with numbers corresponding to the appropriate alarm zone. ❖ .LIGHTING: . Parking lots and associated driveways, circulation areas, aisles, passageways, recesses, and grounds contiguous to buildings shall have adequate security lighting. The lighting shall be of sufficient wattage to provide adequate illumination to make clearly visible the presence of any person on or about the . premises from at least 25 feet away during the hours of darkness and provide a safe & secure environment for all persons, property, and vehicles on site.. Security lighting should be installed in such a manner as to prevent tampering or damage. All exterior doors should have their own light source which will adequately illuminate entry / exit areas at all hours in order to make any person on the. premises clearly visible and to provide adequate illumination for persons entering and exiting the building LANDSCAPING: Landscaping shall be of the appropriate type and situated in locations to maximize observation while providing the desired degree of aesthetics. Defensive landscaping materials are encouraged along fence and property lines and under vulnerable windows. - - -•3— FENCING -/- ACCESS CONTROL: -. - - -- When applicable, perimeter fencing of open design, such as wrought iron, tubular steel, or densely meshed and heavy- posted chain link should be installed in order to establish territorial ity.and defensible space, while maintaining natural surveillance. ❖ ROOF TOP OPENINGS: All hatchway openings on the roof of any building are to be properly secured from the building interior. Roof top ladders are to be incorporated into the interior design. All roof top openings are to be incorporated into the building security system. Outside pin -type hinges on all hatchway openings shall have non - removable pins. b ❖ LINE OF SIGHT / NATURAL SURVEILLANCE: Wide - angled peepholes should be incorporated into all solid doors where visual scrutiny to the'door from public or private space is compromised. Trash enclosures should be located away from the buildings /garages and not hinder needed surveillance. Other line of sight obstructions including recessed doorways, alcoves, etc., should be avoided on building exterior walls. ❖ SECURITY SYSTEMS: Comprehensive security systems, silent or audible, should be provided, including digital security cameras. ❖ PARKING ISSUES: Have exterior visitor parking spaces located close to the structure as possible to allow in -line sight from occupants. Make sure trees do not block views to the parking areas. ❖ GRAFFITI REDUCTION TIPS: Prior to occupancy, the surface walls, fences, building, logo monuments, etc. should be graffiti resistant either via surface composition, applied paint types and /or planned shielding by landscaping or plants. Wrought iron fencing has proven to be effective in reducing graffiti. Should the community development department, developer or construction staff have any questions regarding the listed law enforcement and public safety concerns, please contact Community Services Officer Thomas Fowler at 760- 863 -8950. Sincerely, Walter Meyer, Captain Chief of Police t I SOL \14 AT E R ESTABLISHED IN 1918 AS A PUBLIC AGENCY �/STRIC� COACHELLA VALLEY WATER DISTRICT POST OFFICE BOX 1058 • COACHELLA, CALIFORNIA 92236 • TELEPHONE (760) 398 -2651 • FAX (760) 398 -3711 DIRECTORS: OFFICERS: PETER NELSON, PRESIDENT STEVEN B. ROBBINS, PATRICIA A. LARSON, VICE PRESIDENT GENERAL MANAGER -CHIEF ENGINEER TELLIS CODEKAS MARK BEUHLER, JOHN W. McFADDEN ASST. GENERAL MANAGER RUSSELL KITAHARA March 3, 2006 DAN PARKS, A SST. TO GENERAL MANAGER REDWINE AND SHERRILL, ATTORNEYS Planning Commission City of La Quinta Post Office Box 1504 La Quinta, CA 92253 Gentlemen: C File: 0163.1 0421.1 0721.1 Subject: EA 2005 -552, SP 2005 -076, VUP 2005 -030 This area is shown to be subject to shallow flooding and is designated Zone AO, depth 1 foot on Federal Flood Insurance rate maps which are in effect at this time. The District requests the City have the developer comply with their Floodplain Ordinance in the preparation of on -site flood protection facilities for this project. The District will furnish domestic water and sanitation service to this area in accordance with the current regulations of this District. These regulations provide for the payment of certain fees and charges by the subdivider and said fees and charges are subject to change. Additional domestic water pipelines will have to be installed by the subdivider in order for the District to provide service to all parcels. This area shall be annexed to Improvement District No. 55 of the District for sanitation service. The District requires restaurants to install a grease interceptor, including a sample box, sanitary tee and running trap with cleanout, prior to any discharge to its sanitation facilities. The size of the grease interceptor will be determined and approved by the District. Installation of the interceptor will be inspected by the District. TRUE CONSERVATION USE WATER WISELY City of La Quinta Planning Commission 2 March 3, 2006 Plans for grading, landscaping and irrigation systems shall be submitted to the District for review. This review is for ensuring efficient water management. If you have any questions please call Tyme Fruscella, Stormwater Engineer, extension 2229. Yours very truly, Mark L. 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