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Home My WebLink AboutMS 05-08; GARFIELD HOMES; STORM WATER QUALITY MANAGEMENT PLAN (SWQMP); 2006-05-24---------------------------.. ---.. -• ---- STORM WATER MANAGEMENT PLAN for GARFIELD PROJECT SOP 05-01/CP 05-01/MS 05-08 Drawing No. 436-8A APN: 206-013-19 Prepared for: City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008 Telephone: (760) 602-4600 Prepared bv: Alta Consultants 4901 Morena Blvd., Suite 409 San Diego, CA 92117 (858) 581-6101, Fax (858) 581-6138 Bartolome J. Pastor, RCE 38606 Proiect Site Address: Northwest corner of Garfield St & Chinquapin Ave. Carlsbad, CA 92008 Revision Date: May 24, 2006 Submitted bv: Mr. Bernard Goldstein 160 Tamrack Ave. Carlsbad, CA 92008 En • eer of Work -Barto ome J. Pastor RCE 38606, Expires 03/03/2007 RECORD COPY ~ \ 'U 't,G) lo] • Initial Date RECEIVED JAN 11 2007 ENGINEERING DEPARTMENT RECEIVED lvMY 25 200E ENGJNEERlNG ALTA CONSULTANTS PLANNING ENGINEERING SURVEYING 4901 Morena Blvd., Suite 409, San Diego, CA 92117, Tel. (858) 581-6101, FAX (858) 581-6138 - • -- ----.. ---------------.. ----... - Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 Table of Contents INTRODUCTION 1. PROJECT DESCRIPTION 1.1. Topogrophy and Land Use ........................................................................................................ . 1.2. Hydrologic Unit Contribution .................................................................................................... . 2. WATERQUALITYENVIRONMENT 2.1. Beneficial Uses .......................................................................................................................... . 2.1.1. Inland Surface Waters ................................................................................................... . 2.1.2. Coastal Waters .............................................................................................................. . 2.1.3. Groundwater ................................................................................................................. . 2.2. 303( d) Status .............................................................................................................................. . 3. CHARACTERIZATION OF PROJECT RUNOFF 3.1. Existing and Post-Construction Drainage .................................................................................. . 3.2. Post-Construction Expected Discharges ............................................... : .................................... . 4. WATERQUALITYENVIRONMENT 4.1. Construction BMPs .................................................................................................................... . 4.2. Post-Construction BMPs ........................................................................................................... . 4.2.1. Site Design BMPs ......................................................................................................... . 4.2.2. Source Control BMPs ................................................................................................... . 4.2.3. Treat:Inent Control BMPs .............................................................................................. . 5. OPERATION AND MAINTENANCE PROGRAM 6. FISCAL RESOURCES 7. SUMMARY & CONCLUSIONS ATTACHMENTS Attachment A ......................................................................................................... Vicinity Map Attachment B ....................................................................................... Proposed BMP Site Plan Attachment C ................................................. 85th Percentile Precipitation Map & Calculations Attachment D ..................................................................................... Hydrology Formula Sheet Attachment E .......................................... Catch Basin w/StormFilter Detail and Specifications Attachment F ................................ Stormwater Runoff Pollution Prevention Sample Brochures ---• - • --- -.. --------.. ----- - INTRODUCTION: Storm Water Management Plan (SWMP) Garfield SOP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 The Storm.water Management Plan (SWMP) is required per the City of Carlsbad. The purpose of this SWMP is to address the water quality impacts from the proposed improvments on the Garfield project. Best Management Practices (BMPs) will be utilized to provide a long-term solution to water quality. This SWMP is also intended to ensure the effectiveness of the BMPs through proper maintenance. The SWMP is subject to revisions as needed by the Engineer. 1.0 PROJECT DESCRIPTION The 0.25 acre site is located in the City of Carlsbad (see Attachment A). The project is located at the Northwest comer of Garfield Street and Chinquapin Avenue. This project will consist of the demolition of the existing two-story single family residence, the construction of 4 attached residential units with on-site parking garages, new landscaping and drainage improvements . 1.1 Topography and Land Use The existing project area is developed with a two-story single family residence and garage and is designated urban. The lot follows the general slope of Chinquapin Ave at a grade of approximately 5%. The proposed project will not significantly alter this drainage direction. All proposed runoff will be mitigated to Chinquapin A venue via the proposed D-25 curb outlet. See BMP Site Plan for location. 1.2 Hydrologic Unit Contribution The Garfield Project is located in the Carlsbad watershed and in the Buena Vista Creek hydrologic unit (904.2). The project drains westerly along Chinquapin Ave. The storm drain system for this project will consist of multiple catch basins and cleanouts on site and will be mitigated through a proposed curb outlet to the existing system in Chinquapin A venue. A negligable quantity of runoff will run down the proposed driveways to a slotted drainpipe and will be sump-pumped to outlet to Chinquapin Avenue. Overall, the project area represents less than 0.1 percent of the watershed. 2.0 WATER QUALITY ENVIRONMENT 2.1 Beneficial Uses The beneficial use for the hydrologic unit are included in this section. These definitions have been extracted from the Water Quality Control Plan for the San Diego Basin. MUN -Municiple and Domestic Supply: Includes uses of water for community, military, or individual water supply systems including, but not limited to, drinking water supplyu . AGR-Agriculteral Supply: Includes uses of water for individual activites that do not depend primarily on water wuality including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil well re-pressurization. IND -Industrial Service Supply: Includes uses of water for industrial activities that do not depend primarily on water quality including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil well re-pressurization. .. --- • --------- ------- ---- Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 RECl -Contact Recreation: Includes uses of water for recreational activities involving body contact with water, where ingestion of water is reasonably possible. These uses include, but are not limited to, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white water activities, fishing, or use of natural hot springs. REC2-Non-Contact Recreation: Includes the uses of water for recreational involving proximity to water, but not normally involving body contact with water, where ingestion of water is reasonably possible. These uses include, but ar enot limited to, picnicking, sunbathing, hiking, camping, boating, tide pool and marine life study, hunting, sightseeing, or easthetic enjoyment in conjunction with the above activities. WARM -Wann Freshwater Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation or enhancement of aquatic habitats, vegitation, fish or wildlife, including invertebrates. MAR -Marine Habitat: Includes uses of water that support marine ecosystems including, but not limited to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). WILD -Wildlife Habitat: lnculdes uses of water that support terrestrial ecosystems including, but not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlide, ( e.g., mammals, birds, reptiles, amphibians, invertebrates), or wildlife water and food sources. BIOL -Preservation of Biological Habitats of Special Significance: Includes uses of water that support designated areas or habitats, such as established refuges, parks, sanctuaries, ecological reserves, or Areas of Special Biological Significance (ASBS), where the preservation or enhancement of natural resources requires special protection. RARE -Rare, Threatened, or Endangered Species: Includes uses of water that support habitats necessary, at least in part, for the survival and successful maintance of plant or animal species established under state or federal law as rare, threatened or endangered. 2.1.1 Inland Surface Waters Inland surface waters for the Buena Vista Creek hydrologic unit (904.2) have the following beneficial uses: AGR IND RECl REC2 WARM -WILD RARE ------ - .. 2.1.2 Coastal Waters Coastal waters for the Buena Vista Creek hydrologic unit (904.2) have the following beneficial uses: RECl REC2 BIOL EST (potential) WILD RARE MAR ----.. -.. ----- ----.. .. ------------------ WARM 2.1.3 Groundwater Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 Groundwaters for the Buena Vista Creek hydrologic unit (904.2) have the following beneficial uses: MUN AGR IND (potential) 2.2 303(d) Status According to the California 303(d) list published by the San Diego Regional Water Quality Control Board, there are no impaired waterbodies that are associated with this project. The project location and watersheds have been compared to the current published 303( d) list of impaired waterbodies and the nearest impaired waterbody is Buena Vista Lagoon, impaired by sedimentation/siltation. Buena Vista Lagoon is approximately 1/2 miles northerly from this project. 3.0 CHARACTERIZATION OF PROJECT RUNOFF 3.1 Existing and Post-Construction Drainage The proposed project will not significantly alter drainage patterns on the site. Cleanouts, catch basins and drains are proposed to control the runoff created by this development. The runoff coefficient will remain the same as the existing condition (C=0.85). There is no increase in the amount of on-site impervious area associated with this project . As discussed in section 2, the existing condition is developed . Post-construction runoff will be directed into the existing storm drain system in Chinquapin Avenue. This system will not divert water from its natural flow direction. The preliminary design of this system is included in the Proposed BMP Site Plan (see Attachment B). 3.2 Post-Construction Expected Discharges The project is not expected to generate significant amounts of non-visible pollutants. However, the following constituants are commonly found on similar properties and could affect water quality: • Sediment discharge due to construction activities • Nutrients from fertilizers • Trash and debris • Hydrocarbons from paved areas • Pesticides from landscaping and home use -• --• --- -• ------ ------------- - Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 4.0 MITIGATION MEASURES TO PROTECT WATER QUALITY To address water quality for the project, BMPs will be implemented during construction and post- construction. 4.1 Construction BMPs Grading and Improvement plans for this project are not yet available, however, potential BMP's may include: • Stabalized Construction Entrance • Silt Fence • Gravel Bag Barriers • Catch Basin/Inlet Protection • Permanent Revetation of all disturbed uncovered areas Selected construction BMPs for this project will be constructed and maintanted so as to comply with all applicable ordinances and guidance documents . 4.2 Post-Construction BMPs Pullutants of concern as noted in section 3 will be addressed through three types of BMPs. These types of BMPs are site design, source control, and treatment control. 4.2.1 Site Design BMPs The project is designed to minimize the use of impervious areas. Roughly 75% of the project area will be impervious. Landscaping/grasses (bio-filters) are incorporated into the remaining areas. The landscaping will consist of both native and non-native plants and grasses. Pollutants are removed by filtration through the grass, sedimentation, absorbtion to soil particles, and infiltration through the soil. Bio-filters are mainly effective at removig debris and solid particles, although some dissolved constituants are removed by absorbtion into the soil as well. The goal is to achive plant establishment expeditiosly to reduce erosion and siltation. The irrigation system for these landscaped areas will be monitored to reduce over irrigation. Pollutants of concern generated from the proposed driveway shall be collected via storm drain and sump pumped into the proposed catch basin with fossil filter insert to ensure the pollutants are removed before runoff is discharged into Chinquapin Avenue. The proposed design of this storm drain system is shown in Attachment B, "Proposed BMP Site Plan". 4.2.2 Source Control BMPs Source control BMPs will consist of measures to prevent polluted runoff. This program will include an educational component directed at the homeowner. The homeowner will receive a set of brochures developed by the County's Environmental Health Department (see Attachment F for sample brochures). These may include the following: • Stormwater Runoff Pullution Fact Sheet • Stormwater Runoff Pullution Prevention Tips for Homeowners • Stormwater Pollution Prevention Yard Work (Landscaping, Gardening, Pest Control) • Stormwater Pollution Prevention Pet Waste - -• --- --.. .. ---.. -.. .. """ 4.2.3 Treatment Control BMPs Storm Waw llanagement Plan (SWlfP) Garfield SDP 05-01/CP 05-01/11S 05-08 APN: 206-013-19 The following treatment control BMPs will be implemented to address water quality: --- Pollutant of Treatment Control BIIP Categories Concern Biofilters Detention Infiltration Wet Ponds Drainage FUtration Hydrodynamic Basins Basins<1> or YVetlands Inserts Separator Svstems<21 Sediment M H H H L H M Nutrients L M M M L M L HeawMetals M M M H L H L Oraanic Com~7~:; u u u u L M L Trash & Debris L H u u M H M Oxygen Demanding L M M M L M L Substances Bacteria u u H u L M L Oil &Grease M M u u L H L Pesticides u u u u L u L (1) Including trenches and porous pavement. (2) Also known as hydrodynamic devices and baffle boxes. L: Low removal efficiency M: Medium removal efficiency H: High removal efficiency U: Unknown removal efficiency Sources: Guidance Specifying Management Measums for Sources of Nonpoint Pollution in Coastal Wate,s (1993), National Stormwater Best Management Practices Database (2001 ), and Guide for BMP Selection in Urban Deve/oDed Amas (2001 ). Placements of the BMPs are noted on the project plans and in Attachment B . 5.0 OPERATION AND MAINTENANCE PROGRAM • The operation and maintenace requirements for each type of BMP is as follows: .... 5.1 Catch Basins, Cleanouts & Storm Drains • The operational and maintenance needs of the Catch Basins are: ... - - • .. -.. • Preventative maintenance and monitoring. Inspection Frequency The facility will be inspected: • Once a month at a minimum • After every large storm (after every storm monitored or those storms with more than 0.50 inches of precipitation) • On a weekly basis during extended periods of wet weather Debris and Sediment Disposal Waste generated at catch basins and drains is ultimately the responsibility of the homeowner . Disposal of sediment, debris. and trash will comply with applicable local, county. state, and federal waste control programs. ---.. -• ----.. ----.. ---... ---------- --... -... 6.0 FISCAL RESOURCES Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 The responsible party for the Garfield Project will ultimately be the homeowners of the individual units. Listed below is the current Land Owners information: GOFAT, LLC Mr. Bernard Goldstein Mrs. Marina Goldstein 160 Tamarack Avenue Carlsbad, CA 92008 (760) 729-6892 7.0 SUMMARY & CONCLUSIONS This SWMP has been prepared in accordance with the City of Carlsbad and the County of San Diego Stormwater Standards Manual. This SWMP has evaluated and addressed the potential pollutants associated with this project and their effects on water quality. A summary of the facts and findings associated with this project and the measures addressed by this SWMP are as follows: • The beneficial uses for the receiving waters have been identified. None of these beneficial uses will be impaired or diminish due to the construction and operation of this project. • The Garfield project will not significantly alter drainage patterns on the site. The discharge points will not be changed. • Only 75% of the total project area will be impervious. Open areas will be landscaped to reduce or eliminate sediment discharge. • The proposed construction and post-construction BMPs address mitigation measures to protect water quality and protection of water quality objectives and beneficial uses to the maximum extent practicable. -- --• -• ----------.. -.. -------------.. .. .. .. Storm Water Management Plan (SWMP) Garfield SOP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENT A Vicinity Map - • --• ---.. - ------- ---- -- .. .. .. ... GARFIELD PROJECT TIIOMAS BROTHERS PAGE 1106-E? -.... -0 4<v,__ ___ _ \ A T&SF RAILROAD ~ ~ ~ ~ Q:: AGUA HEDIONDA LAGOON ~ GARFIELD STREET ~ SITE CARLSBAD BL VD. VICINITY MAP NOTTO SCALE ALTA CONSULTANTS PLANNING BNGINBBRING SURVBYING "901 llorena 11ml. ste. 409 Sall Diep, CA 92ll7 (868) 1581--tlOl Paz (8158) 1581-8138 ------------.. - .. • • .. ... --• - • -• .. Storm Water Management Plan (SWMP) Garfield SOP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENTB Proposed BMP Site Plan I . I , _ I 2. I: I 5. 6. 7. EROSION CONTROL NOTES IN CASE EMERGENC"f WORK lS REQUiRED,CONTACT _ _:cM.::. .. 0.::.'·--=.B::.E..:c~-N'-A_F?.:.D_:cG..:.C..:·L'-D_S_-T_E:._1!'.._i· __ AT (619) 255-7356 (PHONE NUMBER) EQUIPMENT AND WORKERS FOR EMERGENCY WORK SHALL BE MADE AVAILABLE AT ALL TIMES DURING THE RAINY SEASON. ALL NECESSARY MATERIALS SHALL BE STOCKPILED ON SITE AT CONVENIENT ~OCA TIONS TO FAG/LITA TE RAPID CONSlRUCTION OF TEMPORARY DEViCES WHEN RAIN IS EMINENT. DEVICES SHOWN ON PLANS SHALL NOT BE MOVED OR MODIFIED WITHOUT THE APPROVAL OF THE ENGINEERING INSPECTOR. THE CONTRACTOR SHALL TO THE SA T/SFACT/ON RAINFALL. RESTORE ALL EROSION CONTROL DEVICES TO WOF/KiNG ORDER OF THE CITY ENGINEER AFTER EACH RUN-OFF PRODUCING THE CONTRACTOR SHALL INSTALL ADDITIONAL EROSION CONTROL MEASURES AS MAY BE REQUIRED BY THE CITY ENGINEER DUE TO UNCOMPLETED GRADING OPERATIONS OR UNFORESEEN CIRCUMSTANCES W!--!ICH MAY ARISE. THE CONTRACTOR SHALL BE RESPONSIBLE AND SHALL TAKE NECESSARY PRECAUTIONS TO ?!'!EVENT PUBLIC TRESPASS ONTO Af?EAS Wc!ERE Ill.POUNDED Vl.411:.RS CREA!t. A HAZARDOUS CONDITION. A!..1.. EROSION CONTROL MEASURES PROVIDED PER THE APPROVED GRADING PLAN SHALL BE INCORPORATED HEREON. GRADED AR£AS ARDUND THE PROJECT PERIMETER MUST DRAIN AWAY FRD~..1' SLOPE AT THE CONCLUSION OF EACH WORKING DAY. Tf-!E FACE OF 9. ALL REMOVABL£ PROTECTIVE D£V/G£S SHOWN SHALL 8£ IN F'LAG£ AT TH£ £ND OF"tii:CR---, WORKING DAY WHEN THE FIVE (5) DAY RAIN PROBABIUTY FORECAST EXCEEDS FORTY PERCENT ( 40%}. SILT AND OTHEF? DEBRIS SHALL BE REMOVED AFTER EACH RAINFALL. I I I I 10. ALL GRAVEL BAGS SHALL BE BURLAP TYPE WITH .3/4 INCH MINIMUM AGGREGRATE. 11. SHOULD GERMINATION OF HYDROSEEDED SLOPES FAil TO PROVIDE EFFECTIVE COVERAGE OF GRADED SLOPES (90% COVERAGE) PRIOR TO NOVEMBER 15, THE SLOPES SHALL BE STABILIZED BY PUNCH STRAW INSTALLED IN ACCORDANCE WITH SECTiON .35.023 OF C. D. E. THE EROSION AND SEDIMENT CONTROL HANDBOOK OF THE DEPARTMENT OF CONSERVATION, STA TE OF CALIFORNIA. TEMPORARY EROSION CONTROL PLANTING AND IRRIGATION ALL PERMANENT AND TEMPORARY EROSION CONTROL PLANTING AND IRRIGATION SHALL BE JNSTA!:..LED Al'JD MAJNTAH\JED AS REQUIRED h"-4 SPECIF/CATIONS AND THE FOLLOWING; SECTJON 272 OF TI-JE STANDARD A. HYDROSEEDING SHALL BE APPLIED TO: 1. ALL SLOPES THAT ARE GRADED 6: 1 (HORIZONTAL TO VERTICAL) OR STEEPER Wf-fEN THEY ,P. .. RE": 2. a. THREE FEET OR MORE IN HEIGHT AND ADJACENT TO A PUBLIC WALL OR STREET. ALL SLOPES 4 FEET OR MORE IN HEIGHT. AREAS GRADED FLATTER THAN 6: 1 WHEN ANY OF THE FOLLOWING CONDITIONS EXIST: a. NOT SCHEDULED FOR IMPROVEMENTS(CONSTRUCTION OR GENERAL LANDSCAPING) WITHIN 60 DAYS OF ROUGH GRADING. b. IDENTIFJED BY THE PARKS AND RECREATION DIRECTOR AS HIG!-/L Y VISIBLE TO THE PUBUC. c. HA VE ANY SPECIAL CONDITION IDENTIFIED BY THE CITY ENGINEER THAT WARRANTS IMMEDIATE TREATMENT. HYDROSEEDED AREAS SHALL BE IRRIGATED IN ACCORDANCE WITH THE FOLLOWING CRITERIA: 7. All SLOPES THAT ARE G/'1ADED 6: 1 OR STEEPER AND THAT ARE: 2. 3. a. THREE TO EIGHT FEET IN HEIGHT SHALL BE IRRIGATED BY HAND b. WA TERiNG FROM QUICK COUPLERS/HOSE BIBS OF? A CONVENTIONAL SYSTEM OF LOW PRECIPfTA TfON SPRINKLER HEADS PROVIDING 100% COVERAGE. GREATER THAN 8 FEET IN HEIGHT SHALL BE WATERED BY A CONVENTION- AL SYSTEM OF LOW PRECIP!TA TION SPRINKLER HEADS PROVIDING 700% COVERAGE. AF?EAS SLOPED LESS TfiA;V 6: J SYALL BE JRRiGA TED AS APPROVE[) BY T::-fE CITY ENGINEER, PRIOR TO HYDROSEEDING. THE DEVELOPER SHALL SUBMIT A PROPOSED SCHEME TO PROVIDE /RR/GA TION TO THE CITY ENGINEER. THE PROPOSAL SHAU .... BE SPECIFIC ,r:;:EGARDiNG THE NUMBERS. TYPES At✓D COSTS OF THE ELEMENTS OF THE PROPOSED SYSTEM. IRRIGATION SHALL MAINTAIN Tr-/£ MOISTURE LEVEL OF THE SOIL AT T'rlE OPTIMUM LEVEL FOR THE GROWTH OF THE HYDROSEEDED GROWTH. HYDROS££D!NG MiX Sh',t.)_I._ COt'iSIST OF ALL OF TH£ FCLLOWitv.'G: 1. SEED MIX SHALL CONSIST OF NO LESS THAN: a. 20 lbs. PER ACRE OF ROSE CLOVER 20 !bs. PER ACF?[ CF ZORRO FESCUE c. d. e. f. g. h. i. j. 3 lbs. PER ACRE OF E SCHOOL CIA CAL/FORNICA 4 lbs. PER ACRE OF ACH/LLEA MILLEFOLIA 3 !bs. PEF? ACHE OF ALYSS-! .. Hl (CAF?PET OF SNOW) 1/2 lb. PER ACRE OF DIMORPHOLECA ITEMS c,d,e, AND f OF THIS SUBSECTION MAY BE OMITTED ON LOCATIONS t,;,'HE,~E THE: AREA BEING HYDROSEEOE!J JS NOT VISIBLE F"F?OM EITHER A PUBLIC STREET OR RESIDENTIAL STRUCTURES. ITEM a OF THIS SUBSECTION MUST BE INOCULATED WITH A NITROGEN FIXING BACTERIA AND APPLIED DRY EITHER BY DRILLING OR BROADCASTING BEFORE HYDROSEEDING. ALL SEED MATERIALS SHALL BE TRANSPORTED TO THE JOBS/TE IN UNOPENED CONTAINERS WITH THE CALIFORNIA DEPARTMENT OF FOOD AND AGRICUL TUR£ CERT/FICA TION TAG ATTACHED TO, OR PRINTED ON SAID CONTAINERS. NON-PHYTO-TOXIC WETTING AGENTS MAY BE ADDED TO THE HYDROSEED SLUF?RY AT THE DISCRETION OF THE CONTRACTOR. 2. TYPE 1 MULCH .t...PP!.JED AT T.HE RATE OF NO LESS THAN 2000 f!Js PER ACRE. TYPE 6 MULCH (STRAW) MAY BE SUBSTITUTED, ALL OR PART, FOR HYDRAULICALLY APPLIED FJBER MATERIAL. WHEN STRAW IS USED IT MUST BE ANCHORED TO THE SLOPE BY MECHANICALLY PUNCf-!!NG NO LESS THAN 50% OF THE smA w INTO THE SOIL. 3. FERTILIZER CONSISTING OF AMMONIUM PHOSPHATE SULFATE, 16-20-0, WITH 15% SULPHUR APPLIED AT THE RATE OF 500 lbs. PER ACRE. A.REAS TO 8£ HYDROSEEDED SHALL BE PREPARED PRIOR TO HYDROSEEDfNG BY: 1. ROUGHENING THE SURFACE TO BE PLANTED BY ANY OR A COMB/NAT/ON OF: a. TRACK WALKING SLOPES STEEPER THAN 6: 1 b. HAF?.RO~"lf,/\fG AHEAS 6~ ! OH FLATTER THAT .t..RE SUFF!C1£NTL Y FR!.4BL£. c. RIPPING AREAS THAT WILL NOT BREAK UP USING ITEMS a OR b ABOVE. 2. CONDlTIONiNG T.4E SOU ... S SO T:;>-fAT fT iS SUiTA3L£ FOR PLANTING BY: a. ADJUSTING THE SURFACE SOIL MOISTURE TO PROVIDE A DAMP BUT NOT SATURATED SEED BED. b. THE ADCJTJON OF SON ... AMEt-JD}-AENTS~ PH ADJUSTJ,AENT,, !....EACHJNG OF? COVERING SALINE SOILS TO PROVIDED VIABLE CONDITIONS FOR GROWTH. HYDROSEEDED AREAS SHALL BE MAINTAINED TO PROVIDE A VIGOROUS GROWTH UNTIL THE PROJECT IS PERMANENTLY LANDSCAPED OR, FOR AREAS WHERE HYDROSEEDING IS THE PERMANENT LANDSCAPING, UNTIL THE PROJECT IS COMPLETED AND ALL BONDS RELEASED. I I . '\' DRAiN \NLET I EX. P0 ',11iE.~ POi...C ,,..,/ & TELCO RlSE><-R--- LEGEND IJRSCR!PTION QU.ANTITY SILT FENCE 110 LF BLOCK-SCREEN-GRAVEL SILT BASIN 8 EA GRAVEL HAGS 100 EA ~ ~[2j ~ Firm: Name: Phone #: FAX #: ... ..,.I!-,..,,.,..,,.~,sip ..,...AN~S AL I A \,_.,VN V-L i ,j 1 i BARTOLOME J. PASTOR 4901 MORE.r-..JA BL VD. # 409 SAN DIEGO, CA., 92117 (858) 581-6101 (858) 581-6138 ' ii ii r )1 1 :i /i ij ' ' ' • i ! I ' i i ( j ' . -_, :-- J ' r ; ; l 1 ,.;,,, i ..,. ..... 1 r EX. CURB -✓ , i & GUTTER ! ; ' ' ; l 1 ' r ; r i i ; i l ; ' ; D;,-0 EDESTRiAN I 1. SIT POSTS AND EXCAVATE A 4 BY 4 IN (10 BY 10 CM) TRENCH UPSLOPE FROM AND ALOl\;G THE UTv"E.. OF POSIS: I _-✓_ I --~ I -ifll/ ::,...----' !Iii! ------:::.------ ~~ 3. ATTACH T'r!E FILTER FABRfC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 2. STAPL" VliFE FENCiNG TO THE POSTS. 4 IN (10 CM) 4. BACKFILL ANO COMPACT THE EXCAVATED SOIL. SILT FENCE GRAVEL BAGS OVERLAP ONTO CURB ) c RUNOFF 7 / GAP BETWEEN BAGS ACTS AS SPfLLWA Y 3 FT (0.9 M) MIN. ~ THREE LA Y£RS OF GRAVEL BAGS \·~17"':--i ENDS CiVERLAPPED GRAVEL BAGS GRAVEL FILTER I RUNOFF WATER WITH SEDiMENT Ill/RE SCREEN ~IL TERED WATER \_ DROP INLET WIT.'-f GRATE BLOCK-SCREEN-GRAVEL SILT BASIN I I I I I I • I I I I I I i J __ ,,A_s_a_uiLT_' -II 1-.R_c_" ________________ E_x_P_.:::::::_-_-___ o_A_T_E __ -1· I REVIEWED BY: I "' INSPECTOR DATE . I ,, , _No~3~-~~~:':',~,1 1----l---+---------------+---+---+--+---I' I SH~ET I ~C-I-~-r-G-lN-~-f-lN_G_~_f_p~-R-~-~-NB_T_A_D_m I I ' tx;:,.N;;•/vl EROSION CONTROL PLANS FOR: • • ' I 1\/\, BARTOLOME GARFI.t:LD PHOJECT • , I J. PASTOR DATE: 3981 GARFIELD A VENUE I ,---R-CE_3_8_6_o_6_,_E_x_P_._3_/_3_1;_2_0_0_7 ____________ --!f----+--+-----------------l---+---!----+--~~A=P=P~R~OV=E=o===G~LE~N~N=TH~O~M~A=s=PR~U~IM======~11 I ~G £~~~~ r!~ ~-•=.-, ',",",TI,,_.. ~, ..• ~,-'· ',N,'•',.~,,.,.. ~~~ BY~ 12 :~TA EXPIRE:R~~:c 0 ::~ 7 I DRA:~~~ NO.Ii I 4901 Morena Blvd. ste. 409 San Diego. CA 92117 (858) 581-6101 Fax (858) 581-6138 EN~l~E;R o:,wo;K REVISION DESCRIPTION f--D_·A_TI:_,l_!t,_Tl'_,A..cL-+-'--~_-_;_.t__._---11 ~o~ ~~:---'' Ms 05-08 1· 436-SA 1·' J"OB NO. 257-09, DATED APRIL 26, 2006 011-!ER APPROVAL CITY APPROVAL _ _ Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENT C 85th Percentile Precipitation Map & Calculations I • \ \ I \ .. \ •• :·. \ \ RU NOFFC.6.T:CTJL ATlcfN~-"-•=~-· -~--~iof4 Pages Project Name: GA FI ELD RESIDENCE Job No. 257-06 85TH ercentile .'drnlo ~ y CalcL lationc:: Soi l Classification = "D" Fn:.n,uency::: 100 Yr. Storn 1 riat€: August 17, 2005 6 Hour Precipation Intensity (85th %) 0.60 ins/h r INITIAL HYDROLOGY (OVERLAND TIM E) Rema rks -From Node 1 to node 2 Area A1 A= 0.02 Ac. Distance Tra vel L= 45 Ft. Pad Slope S= 1.00% Extrapolated Time of Conce ntration Tc = 8.82 Minutes Table 3-2 Intensity I = 1.10 In/hr. Runoff Coefficient C= 1.00 Design ed Runoff Q= 0.02 CFS Node 2 to Node 3 HYDROLOGY & HYDRAULIC OF PIPES From Node 2 to Node 3 Des igned Runoff Q= 0.02 CFS Pi pe Length L= 35.00 Ft. Pipe Diameter d = 0.33 Ft. Pipe Slope So= 0.50% Manning's Coef. .n = 0.013 Depth of Water y= 0.09 Ft. Velocity V= 1.12 Ft./Sec. Velocity Head hv = 0.02 Ft. Travel Time Tt = 0.52 Minutes Time of Concentration Tc= 9.34 Minutes HYDROLOGY & HYDRAULIC OF PIPES From Node 3 to Node 4 Area A2 A= 0.01 Ac. Designed Runoff Q= 0.02 CFS Pipe Length L= 45.00 Ft. Pipe Diameter d= 0.33 Ft. Pipe Slope So= 0.50% Mann ing's Coef. .n = 0.013 Depth of Water y= 0.09 Ft. Velocity V= 1.10 Ft./Sec. Velocity Head hv = 0.02 Ft. Travel Time Tt= 0.68 Minutes Time of Concentration Tc= 10.02 Minutes Intensity I= 1.01 ln./hr. Runoff Coefficient C= 1.00 Runoff q= 0.01 CFS Total Design Runoff Q= 0.03 CFS Node 3 to Node to 4 HYDROLOGY & HYDRAULIC OF PIPES From Node 4 to Node 5 Area A3 A= 0.01 Ac. Designed Runoff Q= 0.03 CFS Pipe Len gth L = 35.00 Ft. ~--•---H •----..... ~•~--~.-,.: 'I, -:.-.-,,c,; ______ -.r~.-.--= --RUNOFF CALCULATION Page 2 of 4 Pages Project Name: GARFIELD RE !DENCE Job No. 257-06 85TH Percentile Hydrology Calculations Soil Classification = "D" Frequency= 100 Yr. Storm Date: August 17, 2005 6 Hour Precipation Intensity (85th %) 0.60 ins/hr Pipe Diameter d = 0.50 Ft. Remarks Pipe Slope So= 0.50% Manninq's Coef. .n = 0.013 Depth of Water v= 0.09 Ft. Velocity V= 1.19 Ft./Sec. Velocity Head hv = 0.02 Ft. Travel Time Tt= 0.49 Minutes Time of Concentration Tc= 10.51 Minutes Intensity I= 0.98 ln./hr. Runoff Coefficient C= 1.00 Runoff q= 0.01 CFS Total Desiqn Runoff Q= 0.04 CFS Noide 4 to Node 5 From Node 5 to Node 6 Designed Ru noff Q= 0.04 CFS Pipe Length L= 38 .00 Ft. Pipe Diameter d= 0.50 Ft. Pipe Slope So= 0.50% Manning's Coef. .n = 0.013 Depth of Water y= 0.11 Ft. Velocity V= 1.:-w Ft./Sec. Velocity Head hv = 0.03 Ft. Travel Time Tt= 0.49 Minutes Time of Concentration Tc= 11 .00 Minutes Intensity I= 0.95 ln./hr. INITIAL HYDROLOGY (OVERLAND TIME) From Node 7 to Node 6 Area R1 A= 0.1 Ac. Distance Travel L= 98 Ft. Pad Slope S= 0.50% lntial Travel Distance Lm= 50 Minutes Extrapolalted Initi al Time Travel Ti= 9.55 Minutes Table 3-2 Remaining Distance Travel Lr= 48 Ft. Time of Concentration tc = 1.57 Minutes Fiq. 3-3 Total Time of Concentration Tc= 11 .12 Minutes Intensity I= 0.94 In/hr. Runoff Coefficient C= 1.00 Designed Runoff q= 0.09 CFS Node 7 to Node 6 Total Runoff Q= 0.1 3 CFS Node 6 to Node 8 HYDROLOGY & HYDRAULIC OF PIPES From Node 6 to node 8 Designed Runoff Q= 0.13 CFS Pipe Length L= 9.00 Ft. Pipe Diameter d= 0.67 Ft. --r.lti.">M."C-----Project Name: GARFIELD RESIDENCE Page 3 of 4 Pages Job No. 257-06 85TH Percentile Hydrology Calculations Soil Classification = "D" Frequency= 100 Yr. Storm Date: August 17, 2005 6 Hour Precipation .. Intensity (85th %) 0.60 ins/hr Pipe Slope So = 0.50% Remarks Manninq's Coef. .n = 0.013 -Depth of Water y = 0.18 Ft. Velocity V= 1.77 Ft./Sec. Velocity Head hv = 0.05 Ft. Travel Time Tt= 0.08 Minutes Time of Concentration Tc= 1.66 Minutes Intensity I = 3.22 ln./hr. INITIAL HYDROLOGY (OVERLAND TIME) From Node 9 to node 10 Area G1 A= 0.07 Ac. Distance Travel L= 97 Ft. Pad Slope S= 0.50% lntial Travel Dista nce Lm = 50.00 Minutes Extrapolalted Initial Time Travel Ti= 10.70 ln./hr. Table 3-2 Remaining Distance Travel Lr= 47.00 Ft. Time of Concentration tc = 1.55 Minutes Fig . 3-3 Total Time of Concentration Tc= 12.25 Minutes Intensity I= 0.89 ln./hr. Runoff Coefficient C= 1.00 Designed Runoff q= 0.06 CFS Node 9 to Node 10 HYDROLOGY & HYDRAULIC OF PIPES From Node 10 to node 8 Designed Runoff Q= 0.06 CFS Node 10 to Node 8 Pipe Length L= 9.00 Ft. Pipe Dia meter d= 0.50 £lE~ Slope So= 0.50% Manning's Coef. .n = 0.013 Depth of Water y= 0.13 Ft. Velocity V = 1.46 Ft./Sec. Velocity Head hv = 0.03 Ft. Travel Time Tt = 0.10 Minutes Time of Concentration Tc = 12.36 Minutes Intensity I= 0.88 ln./hr. HYDROLOGY & HYDRAULIC OF PIPES Node 8 to Node 11 Area A5 A= 0.01 Runoff Q= 0.06 Confluence @ Node 8 Pipe Length L= 40.00 Ft. Node 8 to No0de 11 Pipe Diameter d= 0.67 Ft. Pipe Slope So= 0.50% Manning's Coef. .n = 0.01 Depth of Water y= 0.12 Ft. Velocity V= 1.41 Ft./Sec. Velocity Head hv = 0.03 Ft. Project Name: GARFIELD RESIDE NCE Page4 of 4 Pages Job No. 257 -06 85TH Percentile Hydrology Calculations Soil Classification = "D" Frequency= 100 Yr. Storm Date: August 17, 2005 6 Hour Precipation Intensity (85th %) 0.60 ins/hr Travel Time Tt= 0.47 Minutes Remarks Time of Concentration Tc= 12.83 Minutes Intensity I= 0.86 ln./hr. Runoff Coefficient C= 1.00 Desiqned Runoff q= 0.01 CFS Tofal Runoff Q= 0.07 CFS Node 11 to Node 12 Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENTD Hydrology Formula Sheet & Calculations l-IYDROLOGY & HYDRAULIC REFERENCE FORL\1ULA TTh1E OF CONCENTRATJQ):': ll.9L-' .3ss Tc=(--) H Tc = 1.8(1.1-CJ {[, sr; INIBNSITY (Ins./lu.): I = 7.44 p 6 D -o.645 Natural \\'atershed -County Dwg.: Appendex X-A \Yhere: Tc= :Minutes+ Initial 10 Minutes L = Miles of \Vatershed Along Natural Channel H = Difference in Elevation along effective slope Line Urban Are.a Overland FJow Fig. 3-5 \\7here: Tc= :Minutes • C = Runoff Coefficient L = Overland Travel Distance S = Effective Slope(%) Intensity-Duraton-Frequency -County Design and .Procedure 11anua1 (Appendix XI-A) \Vb.ere: I= Intensity (in~./hr.) . P6 = 6 hours Precipitaton in (Ins.) D = Duration in minutes MANNING'S FOR PIPE: (Designed Runoff) .Q = 0.4632 dsas1,-i n 0.0737 re,..:.._,-sin0/'3 Q = ---------ds.'3 s 1-'1 ?'J 0" r,1d n G = 2arccos (1-2~) a Q =9. 739DrHe 1•5 Basic Fomrnla-: For Capacity Calculation, S should be • Sf -for Pipe Flowing Full So -for Pipe Partially Full Handbooks for Hy<J.raulics by Baxter & Kings '" ) Pipe on channel flow ~-~-.-~--"'""",__. _ _,,_----=---~'-"--"~ RUNOFF CALCULATION age 1 of 4 Pages Project Name: GA FIELD RESIDENCE Job No. 257-06 Preliminary Hydrology Soil Classification = "D" Frequency= 100 Yr. Storm Date:April 8, 2005 5 Hour Precipation P6 = 2.00 ins/hr INITIAL HYDROLOGY (OVERLAND TIME) Remarks -r rom Node 1 to node 2 Area A1 A= 0.02 Ac. Distance Travel L= 45 Ft. Pad Slope S= 1.00% Extrapolated Time of Concentration Tc= 8.82 Minutes Table 3-2 Intensity I= 3.65 In/hr. Runoff Coefficient C= 1.00 Designed Runoff Q= 0.07 CFS Node 2 to Njode 3 HYDROLOGY & HYDRAULIC OF PIPES From Node 2 to Node 3 Designed Runoff Q= 0.07 CFS Pipe Length L = 35 .00 Ft. Pipe Diameter d ·--· 0.33 Ft. Pipe Slope So= 0.50% Man ning's Coef. .n = 0.013 Depth of Water y= 0.20 Ft. Velocity V= 1.28 Ft./Sec. Velocity Head hv = 0.03 Ft. Travel Time Tt = 0.46 Minutes Time of Concentration Tc= 9.28 Minutes HYDROLOGY & HYDRAULIC OF PIPES From Node 3 to Node 4 Area A2 A= 0.01 Ac. Designed Runoff Q = 0.13 CFS Pipe Length L = 45 .00 Ft. Pipe Diameter d= 0.33 Ft. Pipe Slope So= 0.50% Manning's Coef. .n = 0.013 Depth of Water y= 0.33 Ft. ~\{elocity V = 1.53 Ft./Sec. V el ocity Head hv = 0.04 Ft. Travel Time Tt= 0.49 Minutes Time of Concentration Tc= 9.77 Minutes Intensity I= 3.42 ln./hr. Runoff Coefficient C= 1.00 Runoff q= 0.0 3 CFS Total Design Runoff Q= 0.17 CFS Node 3 to Node to 4 HYDROLOGY & HYDRAULIC OF PIPES From Node 4 to Node 5 Area A3 A= 0.01 Ac. Designed Runoff Q= 0.17 CFS Pipe Length L= 35 .00 Ft. --=-------...n•...-L-------:,-s~--~--..---• _..""_,_.__~-~~~_,..,._.._ ._,..,_ __ RU NOFF CALCULATION Page 2 of 4 Page;:; Project Name: GARFIELD RESIDENCE Job No. 257-06 Preliminary Hydrology Soil Classification = "D" Frequency= 100 Yr. Storm Date:April 8, 2005 6 Hour Precipation P6 = 2.00 ins/hr Pipe Diameter d = 0.50 Ft. Remarks --Pipe Slor e So= 0.50% -----Manning's Coef. .n = 0.013 Depth of Water y= 0.23 Ft. Velocity V= 1.94 Ft./Sec. Velocity Head hv = 0.06 Ft. ----Travel Time Tt = 0.30 Minutes Time of Concentration Tc= 10.07 Minutes Intensity I= 3.36 ln./hr. Runoff Coefficient C= 1.00 Runoff q= 0.03 CFS Total Design Runoff Q= 0.20 CFS Noide 4 to Node 5 From Node 5 to Node 6 ------~------Designed Runoff Q= 0.21 CFS Pipe Length L= 38.00 Ft. Pi pe Dia meter d= 0.50 Ft. Pipe Slope So= 0.50% Manning's Coef. .n = 0.013 Depth of Water y= 0.26 Ft. Velocity V= 2.05 Ft./Sec. Velocity Head hv = 0.07 Ft. Travel Time Tt= 0.31 Minutes Time of Concentration Tc= 10.37 Minutes Intensity I= 3.29 ln./hr. INITIAL HYDROLOGY (OVERLAND TIME) From Node 7 to Node 6 Area R1 A= 0.1 Ac. Distance Travel L= 98 Ft. Pad Slope S= 0.50% lntial Travel Distance Lm= o----50 Minutes Extrapolalted Initial Time Travel Ti= 9.55 Minutes Table 3-2 .~ --. Remaining Distance Travel Lr= 48 Ft. Time of Concentration tc = 1.57 Minutes Fig. 3-3 Total Time of Concentration Tc= 11 .12 Minutes Intensity I= 3.15 In/hr. Runoff Coefficient C= 1.00 Designed Runoff q= 0.31 CFS Node 7 to Node 6 Total Runodd Q = 0.52 CFS Node 6 to Node 8 HYDROLOGY & HYDRAULIC OF PIPES From Node 6 to node 8 Designed Runoff Q= 0.51 CFS Pipe Length L= 9.00 Ft. Pipe Diameter d= 0.67 Ft. ------~-~------·-•----~,. ... -~---...__,.._ ~ Project Name: GARFIELD RESIDENCE Page 3 of 4 Pages Job No. 257-06 Preliminary Hydrology Soil Classification = "D" Frequency= 100 Yr. Storm Date:April 8, 2005 6 Hour Precipation P6 = 2.00 ins/hr Pipe Slope So= 0.50% Remarks Manning's Coef. .n = 0.013 Depth of Water y= 0.37 Ft. Velocity V = 2.56 Ft./Sec. Velocity Head hv = 0.10 Ft. Travel Time Tt= 0.06 Minutes Tim e of Concentration Tc= 1.63 Minutes Intensity I = 10.86 ln./hr. INITIAL HYDROLOGY (OVERLAND TIME) From Node 9 to node 10 Area G1 A= 0.07 Ac. Distance Travel L= 97 Ft. Pad Slope S= 0.50% lntial Travel Distance Lm= 50.00 Minutes Extrapolalted Initial Time Travel Ti= 10.70 ln./hr. Table 3-2 RemaininQ Distance Travel Lr= 47.00 Ft. Time of Concentration tc = 1.55 Minutes FiQ. 3-3 Total Time of Concentration Tc= 12.25 Minutes Intensity I = 2.96 I n./hr. Runoff Coefficient C= 1.00 Designed Runoff q= 0.21 CFS Node 9 to Node 10 HYDROLOGY & HYDRAULIC OF PIPES From Node 10 to node 8 Designed Runoff Q= 0.21 CFS Node 10 to Node 8 Pipe Length L= 9.00 Ft. Pipe Diameter d= 0.50 Pipe Slope So= 0.50% ManninQ's Coef. .n = 0.013 Depth of Water y= 0.26 Ft. Velocity V= 2.05 Ft./Sec. Velocity Head hv = 0.07 Ft. Travel Time Tt = 0.07 Minutes Tin 1e of Concentration Tc= 12.33 Minutes Intensity I= 2.94 ln./hr. HYDROLOGY & HYDRAULIC OF PIPES Node 8 to Node 11 Area A5 A = 0.01 Runoff Q= 0.71 Confluence @ Node 8 Pipe Length L = 40.00 Ft. Node 8 to No0de 11 Pipe Diameter d= ·0.67 Ft. Pipe Slope So = 0.50% ~annif\g__'_s Coef. .n = 0.01 -Depth of Water y= 0.46 Ft. Velocity V = 2.74 Ft./Sec. Velocity Head hv = 0.12 Ft. --,=i--z-ti'.-~----1,..--=-:;i,r,..----~-.n ----Project Name: GARFIELD RESIDENCE Page4 of 4 Pages Job No. 257-06 Preliminary t-lydrology Soil Classification = "D" Frequency= 100 Yr. Storm Date:April 8, 2005 6 Hour Precipation P6 = 2.00 ins/hr Travel Time Tt = 0.24 Minutes Remarks ------~ Ti me of Concentmtion Tc= 12.57 Minutes Intensity I = 2.91 ln./hr. Runoff Coefficient C = 1.00 Designed Runoff q= 0.03 CFS Total Runoff Q = 0.74 CFS Node 11 to Node 12 Storm Water Management Plan (SWMP) Garfield SOP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENT E Catch Basin w/Fossil Filter Detail and Specifications ----------------------------- ,----CONCRETE COLLAR GRATE & FRAME OVERFLOW WEIR CREST SCUM BAFFLE DEBRIS SUMP ----, CLEANOUT OPENING IN WEIR WITH HOLE & EXPANSION PLUG Also available in concrete and plastic. FILTER CHAMBER COVER FILTER CHAMBER INLET StormFllter CARTRIDGE FILTER CHAMBER OUTLET ~ ~ OUTLET PIPE STORMWA&. MANAGEMENT INC . LJFlJNG EYC (lYP) A .. TRAfflC BfA.~NC LID A INLET PtP( srue (oPTIONAL) STEEL CATCHBASIN Stormfilfer -PLAN VIEW CMRf\.OW WEIR CREST oun.rr AP£ STUB CLE'.ANOUT OPENNC IN OVERFLOW W(IR STEEL CATCHBASIII Slormfll!er -SECTION VIEW A-A SCM.C: .. I V.&RiE'S STEEL CATCHBASIN SlormFilter -SECTION VIEW B-B , U.S. PATENT No. 5.322.629, 5,624,576, AND OTHER U.S. AND FOREIGN PATENTS PENDING The Stormwater Management Stormfilter® is now available in a steel, concrete or plastic catch basin configuration. The CatchBasin Stormfilter system, an extension of the widely accepted Stormfilter Best Management Practice, has been engineered to replace the standard catch basin. In the CatchBasin Stormfiiter, polluted runoff enters the system through a traffic-bearing grate. in the inlet chamber primary settling of the runoff occurs, and the heavier solids drop to a sump on the vault floor. The water is directed under a baffle into the filter chamber where the Stormfilter cartridge is housed. During filtration, finer soli~s and soluble pollutants are removed. Clean water is discharged from the filter and directed around the overflow bypass weir to the outlet pipe. During heavy storms, when the flow exceeds the design flow, water in the inlet chamber spills over the bypass weir, preventing the re-suspension of sediments and pollutants trapped In the cartridge chamber. SYSTEM FEATURES AND BENEFITS • Proven Stormfiiter technology targets site-specific pollutants • Low cost, heavy gauge, all steel construction • Internal bypass minimizes re-suspension of trapped pollutants • Simple, low cost installation • Easy maintenance supported by Stormwater Management • Operation and Maintenance Guidelines available from Stormwater Management Inc. • Also available in concrete and plastic GENERAL SPECIFICATIONS • StormFilter capacity -5 -15 gpm/cartridge (up to 4 cartridges) • Peak hydraulic capacity -1.0 cfs or 3.0 cfs • Hydraulic drop (Rim to Invert) -2.3' to 3.3' • Outlet pipe diameter -6" to 12" • Load bearing capacity-H-20 rated • Optional corrosion-resistant powder coating mlTIER M DQ~ ~[LLJ ~[R~ ~~[Q)~b\ .,,_J-:-.;~-". f -i ~. '.. !) ' .,.. . __ ._ .... ,., ... ..... ~. ~;., ... PERLITE IRON INFUSED POLLUTANT PERLITE Sediments ✓ Oil and Grease ✓ Soluble Metals Organics Total Phosphorus ✓ Dissolved Phosphorus Total Nitrogen ✓ Dissolved Ammonium CSF® LEAF MEDIA ZEOLITE 1, I , GAC PLEATED FABRIC MEDIA SELECTION GUIDE CSF ZEOLITE GAC IRON INFUSED PLEATED FABRIC ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ STORM~A~- MANAGEMENT INC. The Stormwater Management Stormfilter® uses a variety of filter media to target and remove pollutants from stormwater runoff. It is the only stormwater treatment system to offer such versatility in removing site-specific pollutants. The Stormfilter can be customized for each site by using different filter media to remove sediments, soluble phosphorus, soluble metals, and oil and grease. In many cases, a combination of media is recommended to maximize the effectiveness of pollutant removal. PERLITE Perlite is a naturally-occurring puffed volcanic ash. Its highly porous, multicellular structure, and rough edges make it very effective for removing fine particles. Perlite can be used as a stand-alone media or in conjunction with other media. As a stand atone media, perlite most effectively removes suspended solids (TSS), and oil and grease. CSF® LEAF MEDIA CSF leaf media Is created from a feed stock of pure deciduous leaves collected by the City of Portland, Oregon. Stormwater Management processes composted leaves into a granular organic media that is most effective at removing soluble metals, (TSS), and oil and grease. ZEOLITE Zeolite is a naturally occurring mineral that has been used In a variety of water filtration applications. Zeotite is used to remove soluble metals, ammonium and some organics. GAC (Granular Activated Carbon) GAC has been used in the water filtration industry for many years. This media Is known for its micro- porous structure and extensive surface area, which provides high levels of adsorption. Stormwater Management has taken this developed filtration media and applied it to the stormwater Industry primarily for the removal of oil and grease and organics such as pentachlorophenot (PCP) anc;I TNT. IRON INFUSED MEDIA Iron infused media is Stormwater Management's newest addition to media filtration. This open-cell structured media is infused with small bits of iron to remove dissolved phosphorus. This media also reduces soluble copper and zinc, making it extremely valuable for sensitive watersheds with nutrient: loading problems. PLEATED FABRIC INSERTS Stormwater Management's pleated fabric inserts are designed primarily for TSS control. The reusable Insert fits Inside the standard cartridge; extra space between the insert and the center tube can be used for the addition of granular media to provide soluble pollutant removal. Media selection requires an understanding of the pollutants generated from the site and the sensitivity of the receiving waters. The media selection guide on the other side of this sheet can be used as a basic guideline when choosing the appropriate media for your site. "~~·(". ~,,.-.~ . .• .,, • ~ .1 .. ,. ,, -·. r - i i l I I ,, . :j· :\\ \\ \ (J Storm Water Management Plan (SWMP) Garfield SDP 05-01/CP 05-01/MS 05-08 APN: 206-013-19 ATTACHMENTF Stormwater Runoff Pollution Prevention Sample Brochures ,\ All Live Downstream! -Clea·n ·:Water is . Importaflt to All of Usl When rain flows over slreets and olher surfaces, it picks up pollutants and carries them into the stonnwater conveyance •stoon drain" system. Did you know that storin drains ~re NOT connected to sanitary sewer ~yste,-ns anci_~atment pl~nts? The sto~ d~iri s~~;., Is deslg~ed to prevent flooding by transporting water.away from de,veloped areas. Ho~ever: this water,~ not filtered or treated, and all the contaminants it co~tains eyentually flow to our streams, lakes, and oteartwher~ ·we swim and ~sh. : Onie. ~;;'Jjo!lirted'~~~ff can harm wildlife and habitats. In ~ ·'. , • :,. : -. • ~: -, . • -· .... -• I ·.. some cases, It can even cause beach closures or make fish •• and s~eiffish.unsafe to eat: • . :: ~ ·:. >"·\~:-_)(;.1:.-~.:~--~:_:.·.· . . .,,_. .•!·f· • . ,· 4 :• ·= ~Yl\:J:iti, ·: _; ·1 /,,-;: .. ::•5\. ,Wh • jJcf'we}need "Cle··· ')Water? REFERRAL NUMBERS -For more information on stormwater management (888) 846-0800 -For information on recycling, composting and household toxics (877) R-1 Earth (877) 713-2784 • To schedule a presentation for your community group or organization (888) 846-0800 - For residential gardening tips or questions please contact the Master Gardener Program (858) 694-2860 -For a daily update on beach and bay closures (619) 338-2073 a r:·~_•!T'\~ , .... ~ .. ~·:·:.=11 "· project clean water "dean water through local commitment and action" Call us for more information: (888) 846-0800 or visit us at our web site: www.sdcdpw.org or www.projectcleanwater.org It's against the law to pollute stormwater. County Code §67.805 prohibits the discharge of anything but rainwater l'O the stormwater conveyance system or receMng waters. Pllnted on ~ paper 06/03 STORMWATER POLLUTION PREVENTION YARD WORK \~ .. LANDSCAPING GARDENING PEST CONTROL County of San Diego Watershed Protection Program ,-~·· ,, WHAT IS STORMWATER POLLUTION? When rain flows over streets and other surfaces, it picks up pollutants and carries them into the stormwater conveyance (''storm drain") system. This system Is designed to prevent flooding by transporting water away from developed areas. However, thls water is not filtered or treated, and all the contaminants It contains eventually flow to our streams, lakes, and ocean where we C.- swlm and flsh. e1 _::~ Once there, polluted runoff can harm wildlife )~r ~ and habitats. In some cases, it can even cause beach dosures or make fish and shellfish unsafe to eat. Wastes from yard work are among the many common stormwater pollutants that can degrade water quality. Other • examples lndude paint, oll "t' ~ and automotive fluids, ... construction debris, pet • / f 1 • waste, litter, pool chemicals, and dirty wash water. ONLY RAIN IN THE STORM DRAIN 1,1/11 1 1 :_j_ 1 /-:-/_I/ ~ !_ L~ _:_ "°' { I ~ c.~---,c ' C..=::!,.-:: -:.....---~ HOW DOES YARD WORK POLLUTE STORMWATER? 1 What you do In the yard can directly Impact the quality of our local waters. When soll, organic wastes, and • chemicals leave your yard, they flow - directly Into streams, lakes, and the ocean where they can harm human health and the environment. , ' , .. , ,,,,. OVERWATERING _ -, ,,, ,,, ; -. '-. I , , Over watering washes -..._ ~-· ' ,. :' fertilizers, pesticides, and . -~ H.. ."fl!l!l8'i herbicides Into storm drains. 1,16:~ In your yard these chemicals Ai: t;,... kill garden Invaders, but when washed Into local waters they poison fish and contaminate water. &l CHEMICALS The "chemical only" approach to pest control often causes more problems than it solves. Over 90% of the Insects In your lawn and garden are not harmful. Many gardeners use pesticides, herbicides, and fertilizers at over 20 times the rate necessary, greatly Increasing polluted runoff. ORGANIC WASTES Grass dippings, leaves, and tree bimmlngs swept or blown Into streets and gutters carry o ·•-. chemicals into our waterways and can clog catch basins, Increasing the risk of flooding. Once they settle Into water bodies, these materials begin to decompose, absorbing oxygen fish need to survive. SEDIMENT Soll and dirt washed from yards can also harm aquatic life by clogging the gills of fish, blocking light transmission, lowering water temperatures, and inhibiting photosynthesis. WHAT CAN I DO? Here are some things you can do to keep contaminants out of runoff. ~ GENERAL LANDSCAPING TIPS 1 . Schedule big projects for dry weather. 2. Store stockpiles under plastic tarps to protect them from wind and rain. 3. Store pesticides, fertilizers and other chemicals in a covered area. 4. Use plants that require less water. 5, Prevent erosion by planting fast-growing grasses to shield and bind the soil. LAWN and GARDEN MAINTENANCE 1 . Don't overwater. Use drip Irrigation, soaker hoses, or micro-spray systems. 2. Use curbside yard waste recycling or take cllpplngs to a landfill for composting. 3. Don't blow or rake leaves Into the street or gutter. Avoid hosing down the pavement. 4. Don't overfertlllze or apply chemicals near ditches, streams, or water bodies. CHEMICAL ALTERNATIVES 1 . Don't kill Insects that aren't harmful. 2. Use less toxic products, for example dehydrating dusts (such as slllca get), lnsecttcidal soaps, boric acid powder, horticultural oils, pyrethrln-based Insecticides, bacterial Insecticides, and organic or non-toxic fertilizers. 3. Use predatory Insects when possible. 4. If you must use a pesticide, use one that Is specifically designed to control your pest (listed on the label). Always read the label and use only as directed.