m :t!JJ-;TEVENS · CRESTO ENGINEERING, INC.
DRAINAGE STUDY FOR:
ROSELLE STREET SAN DIEGO, CA
Prepared for: CLL-ROSELLE, LLC 3565 Riviera Drive San Diego, CA 921 09
Prepared by: STEVENS CRESTO ENGINEERING INC. 9665 Chesapeake Drive, Suite 200 San Diego, CA 92123
DATE: 01/16/08 REVISED: 06/ 19/ 15 SCE Project: 14017.01 PTS: 150566
©Stevens Cresto Engineering, Inc. 20 15
CIVIL ENGINEERS • PLANNERS • LAND SURVEYORS 9665 CHESAPEAKE DRIVE, SUITE 200 • SAN DIEGO. CA • 92123- 1352 PHONE 858.694.5660 • F.AX 858.694.5661 DRAINAGE STUDY FOR:
ROSELLE STREET
SAN DIEGO, CA Drainage Study for: Roselle Street
TABLE OF CONTENTS
TOPIC SECTION PAGE
INTRODUCTION ...... 1 1-1
VICINITY MAP ...... 2 2-1
EXISTING HYDROLOGY...... 3 3-1
Exhibit 'A' "Existing Drainage Basins" (Half size) 3. I 3-2 Time of Concentration & Runoff Calculations 3.2 3-4 City of San Diego Drainage Manual References 3.3 3-9
PROPOSED HYDROLOGY ...... 4 4-1
Exhibit '8' "Proposed Drainage Basins" (Half size) 4. I 4-2 Time of Concentration & Runoff Calculations 4.2 4-4
APPENDIX...... 5 5-1
FEMA Study Excerpts 5-2 Exhibit 'A' "Existing Drainage Basins" (Full size)
Exhibit '8' "Proposed Drainage Basins" (Full size)
SCE Project No. 14017.01 1 Drainage Study for: Roselle Street
SECTION 1
INTRODUCTION
Purpose of Study
The Roselle Street project is a 7.04 acre undeveloped property located at the eastern end of Roselle Street, south of Sorrento Valley Road. Approximately one third of the property, the southern portion, is steep hillside that slopes from south to north. Carroll Canyon Creek runs along the base of the hillside from the eastern property boundary to the middle of the property, and then turns north and exits through the northwestern property boundary. All storm water runoff generated by the project is tributary to the creek. The creek discharges into the Pacific Ocean approximately 2 miles downstream. This report accompanies the Grading Plan submittal for Roselle.
Legal description for the project is: Lot "B'' and the Southeasterly 65 feet of Lot "A" of Acre Lot 33 of the Town of Sorrento, in the City of San Diego, County of San Diego, State of California, according to Map thereof No. 362 and No. 483, filed in the Office of the County Recorder of San Diego County, September 30, I 887, and February 9, I 888, respectively.
From the I 950s to the I 970s, the project site was used as a summer day camp. Structures on-site at that time included multiple buildings and a swimming pool. The swimming pool has since been backfilled and the buildings have been demolished. Since the I 970s, and up until a few years ago, the property sat vacant and unused. From early 2005 to late 2006, the property was leased out for use as a storage yard. During that time, unauthorized fill was placed in the northwestern corner of the project. As a result, a Notice of Violation was issued for the property on December 7, 2006. Currently, no structures exist on-site or are proposed for the project.
The Roselle Street property has been identified as a site of significant archaeological interest and is part of a larger archaeological site known as Ystagua. This site is believed to have been a village used by Native Americans approximately 240 years ago. Archaeological excavations on neighboring properties have uncovered large numbers of artifacts, including ceramic vessel fragments, arrowheads, stone tools, ornaments made from shells, and human remains. In I 999, a water line repair uncovered many artifacts on the subject property similar to those found on the neighboring properties.
Existing Hydrology
All of the storm water runoff generated by the project is tributary to Carroll Canyon Creek. The creek passes through the eastern half of the property, running south to north. Based on f/oodway data for the creek, found in Table 8 - F/oodway Data from the FEMA Flood Insurance Study for San Diego County, CA and Incorporated Areas, dated June I 9, I 997, the flow rate in the creek, adjacent to the project, during a I OD-year storm event, is approximately 6,700 cfs. The approximate extents of the I OD-year flood zone are indicated on Exhibits A and B. Excerpts from the FEMA study are included in Section 5.
SCE Project No. 14017.01 1-1 Drainage Study for: Roselle Street
The majority of the project property will remain unchanged in the proposed condition and, as a result, those portions will not be included in this study. This hydrological study analyses the area of interest as a single Basin "A" subdivided into Basins "AN" and "AS". Though both sub-basins drain into Carroll Canyon Creek within the project boundary, runoff from Basin "AS" enters the creek south of Basin "AN" and runoff from Basin "AN" enters the creek near the northern project boundary.
Basin "A" is approximately 3.26 acres and is divided into two sub-basins; "AN-1" and "AS-1 ". Runoff generated by Basin "AN-1" is conveyed to the north, via overland flow, and enters Carroll Canyon Creek near the northern project boundary. Basin "AS-1" is mostly hillside. Runoff from the basin is conveyed to the north, via overland flow, and enters Carroll Canyon Creek upstream of Basin "AN-1 ", within the project boundary. A total of approximately 5.8 cfs of runoff is generated by Basin "A" during a 100-year design storm.
Proposed Hydrology
Proposed Basin "A" is approximately 3.26 acres and is divided into four sub-basins; "AN-1 ", "AN-2", "AN-3", and "AS-1 ". Basin "AN-1" contains the majority of the proposed stabilized pad. Storm water runoff generated by the pad is conveyed to the north, via overland flow, to a swale along the northern edge of the pad. The swale directs runoff to a proposed catch basin in the northern corner of the pad. From there, a 12" storm drain conveys runoff to the northwest, to an existing 60" RCP storm drain that discharges into Carroll Canyon Creek along the northern project boundary. Basin "AN-3" contains a small portion of the stabilized pad on the south side of the proposed landscaped berm along the project frontage. Because of the berm, the approximately 0.05 cfs of runoff generated by the basin during a 100-year design storm will now drain into Roselle Street instead of draining directly into Carroll Canyon Creek. Basin "AS-1" contains only a small portion of the stabilized pad and will remain largely unchanged in the proposed condition. A total of approximately 5.7 cfs of runoff will be generated by proposed Basin "A" during a 100-year design storm.
Procedure
1. Runoff rates were determined by the rational method: 0- CIA
a. Runoff coefficients (C) of 0.45 for the existing project condition and 0.50 for the proposed condition were utilized in the runoff calculations.
b. SO-year and 100-year storm intensities (Isa and l 100), were determined by the intensity-Duration-Frequency Curves per City of San Diego's Drainage Design Manual (April 1984).
c. Drainage basin area(s) (A), in acres, are delineated and quantified as shown on Exhibits "A" and "B" in Sections 5.
2. Storm drain pipe sizing is based on Manning's formula; where, a roughness coefficient (n) of 0.010 for PVC was utilized for pipe flow calculations using "Flowmaster" software.
SCE Project No. 14017.01 I- J. Drainage Study for: Roselle Street
Conclusion
The proposed Roselle Street project will create a stabilized pad on the project property. A proposed catch basin and storm drain pipe will collect pad runoff and convey it to the northwest where it will discharge into an existing 60" RCP storm drain. The 60" RCP discharges into Carroll Canyon Creek along the northern project boundary. Creation of the stabilized pad will flatten out a large portion of the project property, allowing storm water runoff to be conveyed as overland sheet flow for a longer period of time. This will increase the peak time of concentration for the basin and offset the small increase in runoff coefficient that will result from having a compacted pad. In the proposed condition, runoff from Basin "A" will decrease by 0. 1 cfs; a negligible change.
SCE Project No. 14017.0 I I-:; 2 Drainage Study for: Roselle Street
SECTION 2
VICINITY MAP
(NO SCALE)
0- ~- I \
SCE Project No. 14017.0 I 3 Drainage Study for: Roselle Street
SECTION 3
EXISTING HYDROLOGY
SCE Project No. 14017.01 3,-1 Drainage Study for: Roselle Street
SECTION 3.1
EXHIBIT "A" EXISTING DRAINAGE BASINS
SCE Project No. 14017.01 § lw iCl ~ ~ t LEGEND (:i • z IQ EXISTING GROUNO COHTOORS w '/1 i~i 360 INOCX 0 z J59 lNTER~EOtATE .. 5 "'w ~ 0: 0RAJHAG€ 8AS,N 0£9GNATOR u .;, ~ z ~ OESIGNATICIN w z @ -BASIN(ALPHA CHARACTERS OESIGNA TE " ~ RECtONAL RUNOFF AREAS) ~ :'.: l.: ~ ~ L BASIN AREA (Aa-e:,) I o~t ~~ ORAJNACE BASIN BOUNOARY Iii: ~ti PROPERTY------LINE RUNOIT now OlRECTION REVISIONS
I 100--- YR FlOCO PLAIN 6 6 I --*-- 6 6 TIME Of CONCENTRATION FlOW PIITH 6 6 ~----~---~ 6 6 ) -----FIBER ROL.L/STRAW WATllES 6 6 I SILT FENCE I )( )( )( )( STABILIZED CONSTRUCTION ENTRANCE I ~ -'L,L~5:: I t- I w < z w a: _J~ a: 0 I u. I t- ::i \ I en < 'i) 0 l\l w 0 ...J <., I w I ~ ...J I w 5 z '-l en < 0 Cl) I ~ a: LOT 33-B I I \t MAP 483 & 362
<:> ~ z = 3.05 CFS I 9 I 3 I CD ~ ~ u I § I ~ '-'z I en z ""'x l ... ~ en I I / ' < I I' I al \\i' ;: w I < C, ~ ;: < ~ . ~ t- z ~ al < V\ :c a: X C ----'- - - '/j ~ ~ ~ -(f-,~ ~ DATE: 06/11 /08 SCE. NO, 0700-4.01 SHEET 60 90 NOTE, 25-FOOT INTER VAL CON TOURS OUTSIDE THE 0 15 3P PROJECT BOU NDARY Wi:RE PR0"10ED BY THE COUNTY ~-.- I t OF SAN OlEGO DEPARTM ENT OF PUBLIC WORKS SCALE, A/fl GEOGRAPHIC INFORMATION SER\/1 CES. A Drainage Study for: Roselle Street SECTION 3.2 TIME OF CONCENTRATION & RUNOFF CALCULATIONS SCE Project No. 14017.01 3-4 Project No: 07004.01 6/ 11/2008 3:58 PM By:BTH ROSELLE STREET EXISTING CONDITION - 50YR STORM EVENT (Rational Method Procedure/ San Dieqo, CA RUN: BASIN INFORMATION FOR REFERENCE ONLY DRAINAGE AREA RUNOFF Tc CxA lso Oso BASIN ac. COEFF min in/ hr cfs AN-I 1.72 0.45 9.0 0.77 3.40 2.63 AS- I 1.54 0.45 5.0 0.69 4.20 2.91 BASIN AN Area= 3.26 Oso= 5.5 HYDROLOGY SUMMARY TABLE.xis ,., 5-) Project No: 07004.01 6/11/2008 3:58 PM By:BTH ROSELLE STREET EXISTING CONDITION - I OOYR STORM EVENT (Rational Method Procedure) San Diego, CA RUN: BASIN INFORMATION FOR REFERENCE ONLY DRAINAGE AREA RUNOFF Tc CxA I 100 0 100 BASIN ac. COEFF min in/ hr cfs AN-I 1.72 0.45 9.0 0.77 3.60 2.79 AS-I 1.54 0.45 5.0 0.69 4.40 3.05 BASIN AN Area= 3.26 0 100= 5.8 HYDROLOGY SUMMARY TABLE.xis ,, \;'l\; 0 0 I I o·gg ....+ g·gg I I co0 1·9g r<)+ I j,'9\; 0 N cgg + I r<) I £'9\; ~ 2 g·gg + ~ N \A ~f ') t L'l\; ~ ::;.. ~ .) M N ~ ~ g·o9 + "- ' N II N ~ ~ 'I II ~ ~ 1 ~ O'l9 ~ ~ ~~ ~ ~ I 8 "' ~ O'l9 + ~ ~ N ~ \t ~ ~ -lo I ~ \S ~ ~ O'l9 ~ ~ Ii ~ ~ 0 ~ \i co ~ (',- O'l9 ;t ): l~ ...... \ ~ \I_ ~ 0-- -...:: 0-- ~ ,, O'l9 ~ N~ '-.._J 0 \),._ IV\ ~ N II \, ().... £'l9 ;t '-,) ~ \1 \~ ',.!:) ? L'l9 ~ \ N ~ ~ 0 IO N ~ l'£9 + '\,. '- 0 ~ 1-...... ~ s- 8'£9 ~ M 11 fl ....0 g·1,9 + 0 ( ~ ~"\J "-\ 1"S9 8 £ 99 + :,.. 0 ~~ ~~ 2§ 5-7 6'09 O'l9 0 0 + 6'l9 "SI- o·z9 0 CD o·z9 + ~11' t0 ~ l'£9 \.....~ 0 ~ ~ ~ N 6'£9 + l t 1, \.,, ~ t0 ~ ~~ ~ ~ ... 9't9 ~ s~ 0 i ~ ~ co ) " ~ \J\ l'8L + 1 ~ N ) 11 ~ ~ ~ ~ S'L8 0 I..; ~ ) "SI- ~ ~ ~ ~ \, ~ ~ ~ 6'86 + ~ ~ ':i-: N ~ 'l ~ ~ ...... : 9' l l l ~ t\J\ ~ '-... 0 ~ ~ ' -.....:. 0 ...... _" 1 ~ M ~ ' g·sn + I ~ ~ ~ ~ N \\ II II 1, £'0tl ~~~ '-J 0 ~ ~ :t: l-...... _ \) CD \~ t·ssl + ~ ~)~ 8'lll 0 N ~~ l'68 l + V\ ~ ~ LO "SI- v·Lol 0 ~ co ~h £'9ll + 0 ~~ 6'ltl 0 "SI- ~ + O'LSl 0 ~ \~ £'09l 0 0 CJ ::::.. [.·1~2 + 0 ~ '::;'\ ~~ ~ ! ~ ~ ~ ~ \) j E,.::,~~ £\_} ~ ~ l: ~ ~ ~ --:s ~ ~~! \1 \_I\ '\(_ ~~~ '""-.. ~ -----: ~~~ N ~ '\.. \) ~ ~ ~ ...... ___ ~ ..J 1 ~ '""-.. ('A ~t~ \.l \) ~ I\ < \....J "" ~ & \~ \---~ \...... __1 5- 8 Drainage Study for: Roselle Street SECTION 3.3 CITY OF SAN DIEGO DRAINAGE MANUAL REFERENCES SCE Project No. 14017.01 3-'1 TABLE 2 RUNOFF COEFFICIENTS (RATIONAL METHOD) DEVELOPED AREAS (URBAN) Land Use Coeff icientJ C Soil Type (1) Residential: D Single Family .55 Multi-Units .70 Mobile Hom es .65 Rural {lots greater. than 1/2 acre) I~ Commercial (2) ii 80% Impervious Indus trial (2) 90% Impervious .•95 NOTES: (1) Type D soil to be used for all areas. (2) Where actual conditions deviate significantly from the tabulated imperviousness values of 80% or 90%, the values given for coefficient C, may be revised by multiplying 80% or 90% by the ratio of actual imperviousness to the tabulated imperviousness. However, in no case shall the final coefficient be less than 0.50. For example: Consider commercial property on D soil. Actual imperviousness = 50% Tabulated imperviousness = 80% 50 Revised C = gQ X 0.85 = 0.53 82 J- /0 H £QLll7TIO!V 17: • (11-J:L J~ • .385" le • lime o/ concenlrar,on L • Len9/I! o/ · warer.rhed h' • /);/l'erence In elevafton a/0119 e/1'.:-cliYe Sht>e line ( See 17,opi:ndix Y-8) r,. :JP"O L. ' t: Ml/es Fee/ #ol./l"S Minules 4 ?4tJ /t) " /d,:J,:J -" 5Po 800 2-1-- /,?f) /L!t) !JO BL! 7L! l-t--60 StJ .30 ' _StJtJtJ '¢~t) 20 /8 ~tJOO" " /G as / 20"0 " /2 /800 " /600 /0 .JO " /,:(/)() " g 8 Ir'==-==--=====-=-~=gNOTE, 1 2tJ j ADD TEN MINUTES TO /OOtJ 7 COMPUTED TIME OF CONjl 900 CENTRATION. ·soo G U-=~~------a!I 7tJO 5 $!JO :S"OtJ /t) 4- 'IIJIJ 300 2()0 H L SAN DI EGO COUNTY NOMOGRAPH FOR DETERMINATION DEPARTMENT OF SPECIAL DISTRICT SERVICES OF TIME OF CONCENTRATION (,c) FOR NATURAL WATERSHEDS DESIGN MANUAL APPROVED ·."1 .•., "c::··"/,.L~("f \I(~, DATE APPENDIX S4 >-II I / -- 1------L Via/er.shed 01i//de E l'l'ec,.t/ve Slope L;n(! Slrea/71 t°r".11/~ /lrea. ;;;· • /lrea. 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' IO 2 0 30 4 0 50 I 2 3 4 :'> 6 7 8 9 10 .(/) l> l> 5 ' (/) -I r l> r MINUTES HOURS z 0z 0 l> I DURATIO~J -u 111 ,, -u G) ;;u rn 0 111 z 0 v\J 0 C 111 ' -X z --1:::' 0 -.L J 4 Drainage Study for: Roselle Street SECTION 4 PROPOSED HYDROLOGY SCEProjectNo.14017.01 l(-1 Drainage Study for: Roselle Street SECTION 4.1 EXHIBIT 'B' - "PROPOSED DRAINAGE BASINS" SCE Project No. I 40 I 7.0 I l.f- d- LEGEND EXlSTING GROUND COHTOORS 360 1ND£X J.59 INTERMEOIA1[ OR.t.JHAG( BASIN OESIGNATOR -BASIN DESIGNATION IN fE ' ( ALPHA CHARACTERS OESIGNA T[ <( CD REGION& RUNOF'f AREAS) I ~ ro WESTERLY LINE @ I ro o 100 YR FLOOD PLAIN ---*-- REV1SIONS I STORM DRAIN PIP£ I STORM DRAIN a.IAHOOT =ID==== STORM DRAIN CURB INL(T ) =!h= = = I TIME Of CONctNTRATION now PATH I ~~---+------+--- I I 1- I w < f w a:z _J~ a: 0 I u. ~ I I :i I ., I C/) < ~ () --~ - w 0 I ..J Cl I ..J w I w iS Cl) z < 0 1/) I a: LOT 33 - B I I I MAP 483 & 362 I I I I I Cl) l . I z ','/ Cl) I I ' < I CD l w I I c., OAlE: 07 /14/06 SCE HO. 07004,01 S> l./ -> Drainage Study for: Roselle Street SECTION 4.2 TIME OF CONCENTRATION & RUNOFF CALCULATIONS SCE Project No. I 40 17.01 4- 4 Project No: 07004.0 I 7/ 14/ 2008 3:24 PM By: BTH ROSELLE STREET PROPOSED CONDITION - 50YR STORM EVENT /Rational Method Procedure/ San Dieqo, CA RUN: BASIN INFORMATION FOR REFERENCE ONLY DRAINAGE AREA RUNOFF Tc CxA lso O so BASIN ac. COEFF min in/ hr cfs AN-I 1.18 0.50 12.8 0.59 2.90 I. 71 AN-2 0.46 0.45 12.8 0.21 2.90 0.60 AN-3 0.03 0.50 12.8 0.02 2.90 0.04 AS-I 1.59 0.46 5.0 0.73 4.20 3.07 BASIN AN Area= 3.26 O so= 5.4 HYDROLOGY SUMMARY TABLE.xis l/_\ Project No: 07004.01 7/14/2008 3:25 PM By:BTH ROSELLE STREET PROPOSED CONDITION - 1OOYR STORM EVENT /Rational Method Procedure/ San Dieqo, CA RUN: BASIN INFORMATION FOR REFERENCE ONLY DRAINAGE AREA RUNOFF Tc CxA I 100 O,oo BASIN ac. COEFF min in/hr cfs AN-1 1.18 0.50 12.8 0.59 3.10 1.83 AN-2 0.46 0.45 12.8 0.21 3. 10 0.64 AN-3 0.03 0.50 12.8 0.02 3. 10 0.05 AS-1 1.59 0.46 5.0 0.73 4.40 3.22 BASIN AN Area= 3.26 0100 = 5.7 HYDROLOGY SUMMARY TABLE.xis l-J-A SH EET / OF ~------i/c.ENT/(An(),v CAIC.I/C-./1170'1/J - J?ROt=t.JSFD c~a {)t/tlf(AAIC> Ft.Or..../,. P:; I yo ;:-;- 5 C 5, z G)/c, C = O,S-c:> T-= ;, 8 (1. 1-c)~ ~ J, fJ (!, I- 0. SO) Jj;;o,_. ..., r,Js s /1.z. ) = g_ 7 /-f /,v. 5 v/,/?E ~ /? -;; /6 <;"" FT c.. :: o.so 5,:/.0% /JJ'Jvnc Tc.:: /t?H/;v :::7 f ::- r. -s 1v/1rtt Q-::-C..rA Cl~ 0, >("J.J /,.///~ 0-BAc 0 ::: /. ) z C,f'5 V== 0, 7 F0 ( Aton Ftc?WnAsrE1c) T: 16 >,c:r / (o. 7 ;=-r/5) -+ 60 = T CJ ni/1/. 5 To£1"1 l?t't/f!N ,' J?; /'l> Fr A5S"<./i1£" 12 "?v'C @. /,09; A- f >v n t: ~ .::.. I J /'-I IN ;;? .£= Z. 9 fllV/ /'It'? {?.:. CIA a.: o, ;;-o ( 2. " /,J/1-m) 1. z ,1c a= ;. 7'? C,~f \j-::. 'i,S° rl/5 { ~/Z()rt r~wr-;A5Tl.:/?) ~ llf>.r'(S:5'F,0) ~ 60 -::- O. 'i'--1 /'-f/,,,/ ;:_ ::: §, 7 -r ). Cf -r O. 'IL/ ::- /5.0t/ /-1/N _L_ ; -z. q /.IV/,-..q< 9665 CHESAPEAKE DRIVE. SUITE 320 • SAN DIEGO, CA • 92123 PHON E 858.694.5660 • FAX 858.694 .5661 l/-7 12" PVC STORM DRAIN Worksheet for Circular Channel Project Description Worksheet Circular Channel Flow Element Circular Channel Method Manning's Formu Solve For Channel Depth Input Data Mannings Coeffic 0.010 Slope 0.010000 tuft Diameter 12 in Discharge 1.74 cfs Results Depth 0.42 ft Flow Area 0.3 ft2 Wetted Perime 1.42 ft Top Width 0.99 ft Critical Depth 0.56 ft Percent Full 42.5 % Critical Slope 0.003856 tuft Velocity 5.48 tus Velocity Head 0.47 ft Specific Energ~ 0.89 ft Froude Numbe 1.70 Maximum Disc 4.98 cfs Discharge Full 4.63 cfs Slope Full 0.001 411 tuft Flow Type 3upercritical Project Engineer: Joseph G . Cresto untitled. fm2 Stevens Cresto Engineering Inc FiowMaster v6.1 [6140] 01/17/08 04:26:40 PM ,n9 0 ~ 0 + 9'l9 st- ~~ I.._ l'l9 0 ~ DR~AGE BASIN 0£SiGNATOR -BASIN DESIGNATION (ALPHA CHARACTERS DESIGNAl'[ @ REGIONAL RUNOFF' AREAS) I J, (') WESTERLY LINE • : : LOT 33-8 t /' L 8A~N AREA (Ao ~ I i'j I 5 ID I ~ "'u ~· ~ ,', I ,. u I tJEt Gl/rf:"'7 Rvlt/0 ~r > ~ / C "'V> l · I ··:-,,,;' ?dT~R?IF.-v ::, w r ,· " ,,r. I- I en I ·,' /,Jt ~ ~ C&O.'f.r I- I· (),2.1 * C!... C. :: (:), )G) z I , ----*----- I () w 0 t), Z1 A(t).~<>) +I. Ji .4.:(tJ. vr) I- ~: C.v ~- LL a:i LL '/ I , '5"1 A-l.. :c w X 0 ------;- :, o.vc w 0 ROSELLE STREET [c"' I LL LL 0 -- -- _ , .!,.. ------z ::, cc: 1------' ,,~------_,,-<;' 1 :' ..... ___ -,, \ \ l \ \ \ \ \ \ \ I I I \ \ \ I DATE: 12/11/07 \ SCE NO. 0700~.01 Sl Groto Size, 24 inches squarv Ri111 bor sin, inch Grat• b•r size: inch Opening width, inch U•ing Bureou of Public Rood• chort 1073.021 o, flow into inlet EQUATIONS, for heads !es• than 0.4 feet. Q • P • J.O • H A(J/21 for heads over 1.4 f~&t. 0 • A • 5. 37 • W <1. 2) for he~ds between 0.4 •nd 1.4 feet, (u6• value for 0.4 feet). r~ble of flow v~lues v~ head levwls. ------Head (feotl Flow Capacity ------o. 10 o. 70 CFS 0.20 I. 97 CFS- 0.30 3. 61 CFS o .• o 5.57 CFS o. !50 5.57 CFS o. r,o 5.57 CFS 0.70 5.57 CFS 0.80 5.57 CFS 0.90 5.57 CFS I. 00 5.57 CFS I. I 0 5. 57 CFS I. 20 5. 57 CFS I. 30 5.57 CFS I. 40 1(1. 68 CFS l J I. 50 11. 05 CFS t. r,o I 1 . 'I 2 CFS I. 70 1 1. 77 CFS I. 80 12. I I CFS I. 90 12. 44 CFS 2.00 12. 76 CFS -··------··------·------ l./ -I I 2DOR2W min. V,., s-: >F'7S /,_'"""n Rock T (min) Design Veloci~ m/sec (ft/sec • Classification (D (D 1.8-3 (6-10) No. 2 Backing 320mm ( 1.1 ft) 3-3.7 220 kg (10-12) (1/4 ton) 823mm {2.7ft) E ~ ~ 3.7-4.3 450 kg 1.1 m (3.5ft) :~ ""0 (12-14) (1/2 ton) "" Q -0 "' 4.3-4.9 900 k~ ~ (14-16) (1 ton 1.3m (4.4ft) E q 4.9-5.5 1.8 tonne ,.., (16-18) (2 ton) 1.6m (5.4ft) ~ 152mm {6") *over 5.5 mps (18 fps) requires special design ""0 Wide Slot· Q Al "' D = Pipe Diameter W = Bottom Width of Channel 30 OR 3W PLAN Filter Blanket Sill, Closs 249kg/rrr -C-13Mpo (420-C-2000) Concrete Concrete SECTION A-A Channel NOTES 1. Plans shall specify: A) Rock Closs and thickness (T). B) Filter material. number of layers and thickness. 2. Rip rap shall be either quarry stone or broken concrete (if shown on the plans.) Cobbles ore not acceptable. 3. Rip rap shall be placed over filter blanket which may be either granular material or filter fabric (woven filter slit film fabric shall not be used). 4. See Regional Supplement Amendments for selection of filter blanket. 5. Rip rap energy dissipotors shall be designated as either SECTION 8-8 Type 1 or Type 2. Type 1 shall be with concrete sill; Type 2 shall be without sill. Revision B Approved Date SAN DIEGO REGIONAL STANDARD DRAWING ORIGINAL Kercheval 2 75 Add Metric T. Stanton 03/03 04/27/2006 Add Rlp R11p Tobie S. Brady 04/06 RIP RAP ENERGY DISSIPATOR DRA\\1NG NUMBER D-40 SEE SDD-100 5 Drainage Study for: Roselle Street SECTION 5 APPENDIX SCEProjectNo.14017.01 5-1 MAP SCALE 1" = 500' 0 250 500 750 1,000 .~ I I i FEET 11 ~~-...... ,PANEL 1339G QL--l~ !i FIRM ~ FLOODINSURANCE RATE MAP SAN DIEGO COUNTY, ! CALIFORNIA ANDINCORPORATEDAREAS PANEL1339 OF 2375 'I (SEE MAP INDEX FOR FIRM PANEL LAYOUT) CONTAINS: ~ . COMMUNITY NUMBER PANEL fillEfil 1: SAN OTEGO, CITY OF 060295 1339 G tcl §" N«ice w UMr; The Map Numbef 9hown belo¥t llh I MAPREVISED © MAY16, 2012 R= Federal Emergency Management Agency This Is an official copy of a portion of the abo\18 referenced flood map . tt was ex tract ed using F~ IT On-Line . This map does not reflect changes or amendments which may ha"" been made subsequent to the date on th e titl e block. For t he latest product information about National Flood Insurance Program flood maps check the FEMA Flood Map Store atwww.msc .fema.gov "'f'>' BASE FLOOD FLOODWAY FLOODING SOURCE WATER SURFACE ELEVATION WllllOUl Wllfl IN(k! A\l \1 l llON M(/\N n1c,111111 on~ FIOOIJWAY II QO(JWAY 1 Wll)ill AIU A VflOCJll' I CltOSS SLCllON DJS!AN(l jl [LI) (SOI/AHi (11111'111 r II o SI COND) {tff I NGV!J) . Soledad Canyon (Cont'd) 33.4 34.1 0.7 AA 15,740 1,033 5,383 3.6 33.4 16,.140 1,075 6,622 2.9 34 .1 34.1 34.6 0.5 AB 34.9 0.5 AC 16,520 1,163 6,695 2.9 34.4 34.4 16,810 789 4,278 4.6 34.7 34.7 35.1 0.4 AD 36.2 AE 17,120 386 1,784 10. 9 36.2 36.2 0.0 AF 17,420 373 2,273 2.9 38.7 38.7 39.1 0.4 17,620 362 1,379 4.9 38.7 38.7 39.1 0.4 AG 40.5 0.0 AH 18,060 352 1,813 3.7 40.5 40.5 Al 18,160 296 1,475 4.5 40.5 40.5 40.5 o.o 0.0 AJ 18,340 146 644 10.4 40.5 40.5 40.5 18,850 310 1,324 5.1 43.5 43.5 43.5 0.0 AK 44.0 0.0 AL 19,177 478 1,707 3.9 44.0 44.0 44.6 44.6 0.0 AM 19,427 656 2,247 3.0 44.6 19,630 553 1,204 5.6 45.7 45.7 45.7 0.0 AN 51.0 0.0 AO 20,220 335 1,005 6.7 51.0 51.0 AP 20,805 556 1,196 5.6 57. 7 57.7 57.7 o.o 21,230 354 1,008 6.6 60.2 60.2 60.2 0.0 AQ 0.0 AR 21,480 .. 421 1,495 4.5 62.3 62.3 62.3 AS 21,690 286 (1,074 6. z -:::,. 63.2 63.2 63.2 0.0 (_ '? /07'fFr' *-' t. '2 Fr/r "' t,t5"g.s,:: F5 lFeet Above North Torrey Pines Road T FEDERAL EMERGENCY MANAGEMENT AGENCY A FLOODWAY DATA B L SAN DIEGO COUNTY, CA E AND INCORPORATED AREAS SOLEDAD CANYON 8 ,. - 'i i '-C· - - ;-+- - - - - "j . , .) " - 70 . r,- . -·- -- -- - - c.n 65 I.a.I 2 I- ,- -· _.. 0 - .f--f--f-- - f-- - --t--· >- ·-, -..... 2 V c::> f-- - - ·- .1-.f-- -f-- -- -, . - ·- -- ~+-,- 45 >- - - u +· r z LJ.J ·- (D - -f--- f-- ~ ~ . ----- Cl) - - ·\ . --f-- f- c( - z c( ,- C: LJ.J c.., I.LI ,----- ·rrr t - :;; a:: - --- - ,, - LJ.J -c( 40 (D -- -- -r ,,· .. f"''"1, ::··-· ·-- LEGEND ~ ~c ref-- z r - ~ ::, I=! r - r -- f-- - -r - - :;; c( / - 500. YEAR FLOOD Cl r,-, r -- -1-1-f- --- r c.., f--f-- ,_ .. >- a:: ------100. YEAR FLOOD u Cl - - z 0 ll.. - -· - ·, r f-- -- - LJ.J c:, --- r r ---- 50 - YEAR FLOOD (D I.LI a:: 35 cc 0 ------10 - YEAR FLOOD LJ.J 2i c.., - -- :;; LJ.J :z: =!':: f--f-- f--- STREAM BED c( ·- f-- -f-- --r-- ·- - ~ --' C ·- - - - -rr r - - ~ Cl) :z: -rr -,,- ·ri,;'' ·t-·- ,· - cc - - CROSS SECTION LJ.J c( -r -i- -r -- - f-- f-- 0 ,_, ~k.1--- f-- ,1- -f-1- + - LOCATION ------t- t- --- ' LJ.J r 1--1-- 1..-..f-.-.- f- 1-t- I- -1-1--1-- f-- t-+ --1- t- - - -- f-- r' -r 6 L1. 19,500 20 500 21,500 t 22,000 STREAM DISTANCE IN FEET ABOVE NORTH TORREY PINES RO D 425P V, o- u "' -0 z "' "' -0 - !2w "'.f "'et= 0' > °'-0 "' E z :J"' cci cc 0 V, u 12 """·co CX:· ~ I.I.I Cl w z "'w~ w u LEGEND ~ '.S. z CJ V1 Ox I<( z "'w CL u: EXISTING GROUND CONTOURS w z i 360 · INDEX z ', '!"Ill ~ '.S - - - 359 INTERMEDIATE 0. "'LU . c,: V1 DRAINAGE BASIN DESIGNATOR UJ ,- "1 u "'LU N . <( m. .,., z "' 1 I UJ "' iO -BASIN DESIGNATION z <5 -;- I A z e': 0) co LU iO <>cl .--WESTERLY LINE I (ALPHA CHARACTIERS DESIGNATE ~ "'Cl N w =' -N I LOT 33-B REGIONAL RUNOFF AREAS) w ]-, .,·~- ,, 0.57 "' l "'~ 0 I "'-~5 0. i5 -1 ._J__ _ ~ L:"'·,,.~~~- t ;Ji o· BASIN AREA (Acres) WOl'.) DIRT L IN 1.U uri-i- ~", "--. Lt'I UJ 0 I I ...0 DRAINAGE BASIN BOUNDARY ...,.I :' t: z I ·-. •.,,. ' '~,::., ~ i "' ::J . , ,_, - ;Ji I "' V1 I PROPERTY LINE - - RUNOFF FLOW DIRECTION REVISIONS I 6 6 I 100------____ YR FLOOD * ___PLAIN _ I 6 6 TIME OF CONSENTRATION FLOW PATH 6 6 6 6 ) FIBER ROLL/STRAW WATILES 6 6 * I SILT FENCE . APPROX. LIMIT OF FLOOD ZONE "AE" I )( )( )( )( (PER A.L.T.A. SURVEY DATED 6/1/2000, STABILIZED CONSTRUCTION ENTRANCE PREPARED BY: O'MALLEY ASSOCIATES). ...·!·· I I- ... I. w \/ I -~ w <( C, _J .·. ~ °"I ~ <( I I- z C \ ",,., ..· ~cc ....,,,_/_..,. ,-,_ - -<( ,;_·-· --:-:~,;~- -,~~>:Z:< :·-!'- -, .:""""t- ,-::::~, :-·:·-:4~*7- ·_···xz: __ m -:I: a: C I )( ® AS-1 w C, STREET -.\··. 1.54 .....z . . I- U) / I )(- ,- ': ' J i I ij····.. _-' ,' w • 1 ( : ' ' } I - : .! •...r } ,------1 i. ~ A \; ,,. .... \' . --~--\ I \ I I I I \ \ I I \ I I I ' ·, \ I i DATE: 06/11/08 \ \ ' SCE NO. 07004.01 SHEET 0 15 30 60 90 NOTE: 25-FOOT INTERVAL CONTOURS OUTSIDE THE PROJECT BOUNDARY WERE PROVIDED BY THE COUNTY I'.•.• I 1----'t OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS SCALE: 1" -- 30' GEOGRAPHIC INFORMATION SERVICES. A X:\DWG\Job\2007\07004\DRAINAGE\07004 100 FT SETBACK-02 EX DRN.dwg 6/11/2008 4:18:52 PM PDT 0 ,- ,J V, "'.,a .,.,...:D ~ "' g *"' "'.. t ii > 0-- " E z "':::, "'cri "'cci 0 V, u LEGEND 1i2 "' "' ~ w a """ C w z "'V EXISTING GROUND CONTOURS uj u ~ 360 INDEX ~ s z ;;i 359 INTERMEDIATE \!'.I V, Ox ~ .,_.,,,' z UJ § w "'z it ~ DRAINAGE BASIN DESIGNATOR z ...... ~ s0.. - LI.I "' V, A -BASIN DESIGNATION C:: 1------i (ALPHA CHARACTERS DESIGNATE u "'UJ <:'-1 . UJ N r-- .,, z M REGIONAL RUNOFF AREAS) <( I 0, 5 7 L.LI "' en l5 ";- 1 i;<) z > ~WESTERLY LINE ,I z i'2 M I <:') ~ UJ a N i;,) LOT 33-B I.LI N I «5 L BASIN AREA (Acres) - "';:5 "' 1- I;<) .,,\ 0.. '5 DRAINAGE BASIN BOUNDARY 1 <( 0 OCJ V, o· I! UJ C::> l'.J -1 ,r t~ :C tSJ LU U rr, - ·, I PROPERTY LINE . : en LU 0 l [L. 1 ' 1 '° t: z u: .... "°0-- :JV'l c""' •' 100---- YR FLOOD PLAIN I ____ * ____ REVISIONS ~ ' ' --- ,. I STORM DRAIN PIPE I STORM DRAiN CLEANOUT =!Qf== - - ,:.__> _; STORM DRAIN CURB INLET ) --Eh= - - I TIME OF CONCENTRATION FLOW PATH I / ---::-, APPROX. LIMIT OF '~LOOD ZONE "AE; I (PER A.LT.A. SURVEY DATED 6/1/2000, I PREPARED BY: O'MALLEY ASSOCIAT~S). , r{~J /' .-"::::"' I ·,. I/ ,....,\,) ~ I "\ ·-· I .,.._,· j ~I ..... I ,. w cr: I -z \:I w Ill: a: 0 ..... u.. \i AN-2 I -,.J / u, ----- : I a. / I I 0 a: I /J-'·'·_.- ..•___.' -t-· / Q. I ' > I I ' ' I 1------I; /. Sc ' .,,,, "I< <'· ',,/\ ...... -1;;,s; ' I - ""f...,,_, \ .. ~ ~, I \ I , \ \ I I ' ... \ I I I \ I I I DATE: 07/14/08 \ I -\ I \ SCE NO. 07004.01 SHEET 0 15 30 60 90 NOTE: 25-FOOT INTERVAL CONTOURS OUTSIDE THE PROJECT BOUNDARY WERE PROVIDED BY THE COUNTY "8·,• I 1----l1 OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS B SCALE: 1" = 30' GEOGRAPHIC INFORMATION SERVICES. X:\DWG\Job\2007\07004\DRAINAGE\07004 100 FT SETBACK-02 PR DRN.dwg 7/14/2008 10:20:38 AM PDT