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HomeMy WebLinkAboutMS 01-07; CHARLES JACOBS PROPERTY; STORM WATER MANAGEMENT PLAN FOR THE CREST ESTATES; 2002-05-07REcEIVED STORM WATER MANAGEMENT PLAN SEP 05 2002 ENGINRI G DPARTMNT THE CREST ESTATES M.S. 01-07 May 7, 2002 For Prepared By: O'DAY CONSULTANTS 5900 Pasteur Court, Suite 100 Carlsbad, CA 92008 JNOO-1031/5 I C63908 * EXP 09130106 1* CIVIL 't 1/Zô/a z Date Christopher J. Scott RCE 63908 1 (Y1S DVOI TABLE OF CONTENTS 1.0 PROJECT DESCRIPTION..................................................................3 1.1 Hydrologic Unit Contribution........................................................3 1.2 Beneficial Uses ..............................................................................3 1.2.1 Coastal Waters.........................................................................................4 1.2.2 Groundwater............................................................................................4 2.0 CHARACTERIZATION OF PROJECT RUNOFF ............................4 2.1 Expected Discharges......................................................................5 2.2 Soil Characteristics........................................................................5 3.0 MITIGATION MEASURES TO PROTECT WATER QUALITY ....5 3.1 Construction BMPs........................................................................5 3.2 Post Construction BMPs................................................................6 4.0 OPERATION AND MAINTENANCE PROGRAM..........................6 4.1 Dry driveway sweeping.................................................................6 4.2 Brow ditch maintenance ................................................................6 4.3 Landscape and irrigation maintenance...........................................6 Attachments: Beneficial uses for the hydrologic unit Vicinity map Project grading/site plan Project erosion control plan 2 STORM WATER MANAGEMENT PLAN Federal, state and local agencies have established goals and objectives for storm water quality in the region. The proposed project, prior to the start of construction activities, will comply with all federal, state and local permits including the Stormwater Management Plan (SWMP) required under the County of San Diego Watershed Protection, Stormwater Management, and Discharge Control Ordinance (WPO) (section 67.871), and the National Pollution Discharge Elimination System (NPDES) from the Regional Water Quality Control Board (RWQCB). The purpose of this SWMP is to address the water quality impacts from the proposed work shown on the grading plans (City of Carlsbad drawing #396-3A). This project will provide guidelines in developing and implementing best management practices (BMPs) for storm water quality during construction and post construction. Since the site is less than 5 acres, a Storm Water Pollution Prevention Program (SWPPP) is not required. Construction BMPs will be shown on the erosion control plan. 1.0 PROJECT DESCRIPTION The project site is made up of 1.4 acres of land, and is located in the city of Carlsbad near El Camino Real and Carlsbad Village Drive (see vicinity map, attachment 2). Currently the site is a single lot containing one house. The proposed project divides the property into four residential lots ranging from 0.25 to 0.40 acres each. 1.1 Hydrologic Unit Contribution The project is located in the Los Monos Hydrologic Subarea (904.31) of the Agua Hedionda Watershed in the Carlsbad Hydrologic Unit in the San Diego Region (9). The site drains north to Ridgecrest Drive and south to Seacrest Drive. Storm flows then continue on to Agua Hedionda Lagoon, approximately 2 miles to the south. The proposed project will not significantly alter the drainage patterns on site. The stormwater discharge points will not divert runoff from the existing conditions. Total runoff from the site during the 10-year design storm decreases slightly, from 2.92 cfs in the existing condition, to 2.87 cfs in the proposed condition. 1.2 Beneficial Uses The beneficial uses for the hydrologic unit are included in attachment 1. These tables have been extracted from the Water Quality Control Plan for the San Diego Basin (9). IND —Industrial Services 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. REC 1 —Contract 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 3 not limited to, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white water activities, fishing, or use of natural hot springs. REC 2—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 include, but are not limited to, picnicking, sunbathing, hiking, camping, boating, tide pool and marine life study, hunting, sightseeing, or aesthetic enjoyment in conjunction with the above activities. COMM —Commercial and Sport Fishing: Includes the uses of water for commercial or recreational collection of fish, shellfish, or other organisms including, but not limited to, uses involving organisms intended for human consumption or bait purposes. EST —Estuarine Habitat: Includes uses of water that support estuarine ecosystems including, but not limited to, preservation or enhancement of estuarine habitats, vegetation, fish, shellfish, or wildlife (e.g., estuarine mammals, waterfowl, shorebirds). WILD —Wildlife Habitat: Includes uses of water that support terrestrial ecosystems including but not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlife, (e.g., mammals, birds, reptiles, amphibians, invertebrates), or wildlife water food and sources. RARE —Rare, Threatened, or Endangered Species: Includes uses of water that support habitats necessary, at least in part, for the survival and successful maintenance of plant or animal species established under state or federal law as rare, threatened, or endangered. MAR —Marine Habitat: Includes uses of water that support marine ecosystems including, but not limited to, preservation or enhancement or marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). AQUA —Aquaculture: Includes the uses of water for aquaculture or mariculture operations including, but not limited to, propagation, cultivation, maintenance, or harvesting of aquatic plants and animals for human consumption or bait purposes. MIGR —Migration of Aquatic Organisms: Includes uses of water that support habitats necessary for migration, acclimatization between fresh and salt water, or other temporary activities by aquatic organisms, such as anadromous fish. SHELL —Shellfish Harvesting: Includes uses of water that support habitats suitable for the collection of filter-feeding shellfish (e.g., clams, oysters, and mussels) for human consumption, commercial, or sport purposes. 1.2.1 Coastal Waters Table 2-3, Beneficial Uses of Coastal Waters (see attachment 1) includes industrial service supply, contact recreation, non-contact recreation, commercial and sport fishing, estuarine habitat, wildlife habitat, rare species, marine habitat, aquaculture, migration of aquatic organisms, and shellfish harvesting. 1. 2.2 Groundwater Table 2-5, Beneficial Uses of Groundwater (see attachment 1) includes municipal and domestic supply, agricultural supply and industrial services supply. 2.0 CHARACTERIZATION OF PROJECT RUNOFF According to the California 1998 303d list published by the RWQCB, there are no impaired water bodies associated with the direct stormwater discharge from this project. The nearest 4 impaired water body is Agua Hedionda Lagoon, approximately two miles to the south. It is impaired by siltation, sedimentation, and high counts of coliform. 2.1 Expected Discharges There are no sampling data available for the existing site condition. The project will contain some pollutants commonly found on similar developments that could affect water quality: Sediment discharge due to construction activities and post-construction areas left bare Nutrients from fertilizers Trash and debris Hydrocarbons from paved parking areas Pesticides from landscaping and home use 2.2 Soil Characteristics The project area consists of soil group C. 3.0 MITIGATION MEASURES TO PROTECT WATER QUALITY To address water quality for the project, BMPs will be implemented during construction and post construction. 3.1 Construction BMPs A detailed description of the construction BMPs will be developed during the grading plan and improvement plan engineering, and shown on the erosion control plans. The following is a list of the potential types of temporary BMPs that are available: Silt fence, straw bale, rock filters, sediment traps and basins Street sweeping and vacuuming Storm drain inlet protection Stockpile management Solid waste management• Stabilized construction entrance/exit Dewatering operations Vehicle and equipment maintenance Erosion control mats and spray-on applications Desilting basins Gravel bag berms Sandbag basins Material delivery and storage Spill prevention and control Concrete waste management Water conservation practices Paving and grinding operations Revegetation of disturbed areas Waste management for solid, liquid, hazardous and sanitary waste, contaminated soil. Illicit discharge/ illegal dumping reporting Clean water diversion and encroachment. Velocity reduction using outlet protection, checked dams, and slope roughening Construction BMPs for this project will be selected, constructed, and maintained to comply with all applicable ordinances and guidance documents. 3.2 Post Construction BMPs Landscaping of the slopes and all disturbed areas will be incorporated into the plans. The goal is to achieve plant establishment expeditiously to reduce erosion. The following BMP's will be implemented to address water quality: Dry driveway sweeping Brow ditch maintenance Trash. management Landscape and irrigation maintenance 4.0 OPERATION AND MAINTENANCE PROGRAM The operation and maintenance will be conducted and financed by the individual lot owners and tenants. 4.1 Dry driveway sweeping Periodic driveway sweeping will be performed prior to the rainy season and when significant time has elapsed between rains. This will help prevent large amounts of trash and silt from washing into the stormdrain system. 4.2 Brow ditch maintenance Cleaning and proper disposal of silt, vegetation, and debris from the ditch on lot 2 will be performed on a regular basis. This will prevent storm water from overtopping and eroding the adjacent slopes. 4.3 Landscape and irrigation maintenance The individual lot owners will be responsible for the operation and maintenance of watering systems on their slopes. G:\jobs\jps.com\00103 1\Storm Water Management Plan.doc ATTACHMENT 1 Table 2-3. BENEFICIAL USES OF COASTAL WATERS Coastal Waters Hydrologic Unit Basin Number BENEFICIAL USE N T1 DV A R E 1 CC R 2 C M MO B L E T W L D R R E M R A U A M G R S W N W R M S E L L Pacific Ocean Dana Point Harbor • • • • • Del Mar Boat Basin • • • • • . S Mission Bay . . 0. . Oceanside Harbor • • • • • • • 0 . San Diego Say 1 •• • •• • •• • •• - - Coastal Lagoons Tijuana River Estuary 11.11 • • • • • • • • 0• Mouth of San Diego River 7.11 • • • • • • • 0 S Los Penasquitos Lagoon 2 8.10 • S • • • • • San Dieguito Lagoon 5.11 S • • • • • • 5 Batiquitos Lagoon 4.51 5 5 • • • • • 5 San Elijo Lagoon 5.61 5 5 S • • • S Aqua Hedionda Lago on 4.31 • • I S • • *1 • 1 1 5 1 Includes the tidal prisms of the Otay and Sweetwater Rivers. 2 Fishing from shore or boat permitted, but other water contact recreational (REC-1) uses are prohibited. • Existing Beneficial Use Table 2-3 BENEFICIAL USES 2-47 September 8. 1994 Table 25. BENEFICIAL USES OF GROUND WATERS Ground Water Hydrologic Unit Basin RI ,um1er BENEFICIAL USE M U N. A G R I N D P R 0 F R S H = = = G W R CARLSBAD HYDROLOGIC UNIT 4.00 Loma Alta HA 2 4.10 + J J • I )_ Buena Vista Creek HA 4.20 El Salto HSA 2 4.21 0 01 01 1 - 1 Vista . HSA 4.22 0 1 0 1 • Aqua Hedionda HA 4.30 Los Monos HSA 2 4.31 I • • Los Monos HSA . 4.31 0 0 0 - Los Monos HSA 1 4.31 0 • 0 Buena HSA 4.32•I • Encinas HA I 4.40 + = = =:: = = = 2 These beneficial uses do not apply westerly of the easterly boundary of the right-of-way of Interstate Highway 5 and this area is excepted from the sources of drinking water policy. The beneficial uses for the remainder of the hydrologic area are as shown. These beneficial use designations apply to the portion of HSA 4.31 bounded on the west by the easterly boundary of interstate Highway 5 right-of-way; on the east by the easterly boundary of El Camino Real; and on the north by a line extending along the southerly edge of Aqua Hedionda Lagoon to the easterly a n d o f t h e l a g o o n , t h e n c e i n an easterly direction to Evans Point, thence easterly to El Camino Real along ths, ridge lines separating Letterbox Canyon and the area draining to the Marcarlo Canyon. These beneficial use designations apply to the portion of HSA 4.31 tributary to Ague Hedionda Creak downstream from the El Camino R e a l c r o s s i n g , i x c e p t l a n d s t r i b u t a r y t o Marcario Canyon (located directly southerly of Evans Point), lend directly south of Ague Hedionda Lagoon, and areas west of interstate High w a y 5 . Existing Beneficial Use O Potential Beneficial Use + Excepted From MUN (see text) Table 2-5 BENEFICIAL USES 2.53 September B. 1994 ATTACHMENT 2 CITY OF - OCEANSIDE VICINITY MAP NO SCALE SITE ATTACHMENT 3 318.43 MB LOT 24 MAP N 3905 To 1K PAD 316.0 - i/ \ , \ 5oj . ..... $'doo -~4,0 ", ... . N - 140 I;LL ThONT LOT LhVE 0.25 AC. / .. OSION 15 LOT 79 EASEAfENTS* 15.O / PAD 319.4 / BOUNDARY M-'JP JVO. 4280 x // CS / () / ITEM PURPOSE O$NER REFERENCE BPA1E SQESCRIP liON PUBLIC UT/LIliES, INGRESS AND EGRESS SAN L',ECC GAS & ELECTRIC CO. fiLE NO. '96O-98294, O.R. 05-11-1960 12' $7DE * NOTE' EASEMENTS PER PRELIMINARY 117ZE REPORT DATED APRIL 25, 2002 BY FIRST AMER/CAN 11 TIE INSURANCE COMPANY, ORDER NO. DIV-545877 @ 2002 O'Day Consultants, Inc. 00 5' 20' 10' 40' SCALE: 1" = 20' BENCHMARK: DESCRIPTION: SPIKE IN POWER POLE /25899 LOCATION: CITY BENCHOFFBASSW000 AVENUE AT M.4EZEL LANE RECORD FROM: C/l'i' OF CARLSBAD WRI7C41 CONTROL ELEVATION: 188.69 MSL. DESIGNED BY: J.S.T., U.S. DATE: JULY 2002 "AS-BUILT STRO// 0 DRAWN BY: L.M.T. SCALE,. AS SHOWN P.E. EXP. DATE No.c551871/J 5900 Pcsteur Court Civil Engineering ENGINEER OF WORK _______ __________ ~Ilr EXP. 6/30/0 SuRp 100 Planning REVIEWED BY CarIsba 760-931--7700 Surveying DATE: or Fox- 760-931-8680 I JOHN P. STROHMINGER RCE: 55187 1 INSPECTOR - DATE SHEET CITY OF CARLSBAD FSHEETS 3 ENGINEERING DEPARTMENT 5 GRADING PLANS FOR: THE CREST ESTATES MINOR SUBDIVISION 01-07 APPROVED GLENN PRUIM PE 51274 EXPIRES 10-30-05 CITY ENGINEER DATE DWN BY: SB,NB PROJECT NO. DRAWING NO. CHKD BY: RVWD BY: M.S. 01-07 396-3A DATE REVISION DESCRIPTION DATE INITIAL DATE INITIAL ENGINEER OF WORKj OTHER APPROVAL CITY APPROVAL XREFS 0031ACRD, 0031MAP, 0031CO3 00311P01, 00317UTL, 0031UTL ATTACHMENT 4 EROSION CONTROL NOTES I. IN CASE EMERGENCY WORK IS REQUIRED, CONTACT JOSEPH GALLAGHER AT (760) 845-7786. 2 EQUIPMENT AND WORKERS FOR EMERGENCY KORK SHALL BE MADE AVAILABLE AT ALL liMES DURING THE RAINY SEASON ALL NECESSARY MATERIALS SHALL BE STOCKPILED ON SITE AT CONVENIENT LOCATIONS TO FACILITATE RAPID CONSTRU011ON OF TEMPORARY DEI4CES *HEN RAIN IS EMINENT J DEWCES SHOH'N ON PLANS SHALL NOT BE MOVED OR MODIFIED HITHOUT THE APPROVAL OF THE ENG'NEERING INSPECTOR. THE CONTRACTOR SHALL RESTORE ALL EROSION CONTROL DEuCES TO $t2RKING ORDER TO THE £4 IISFACT1ON OF THE CITY ENGINEER AFTER EACH RUN OFF PRODUCING RAINFALL, EROSION CONTROL PLANS FOR CREST 1.717ST4 TES THE CONTRACTOR SHALL INSTALL ADDITIONAL EROSION CONTROL MEASURES AS MA Y BE REQUIRED BY THE CITY ENGINEER DUE TO UNCOMPLETED GRADING OPERA liONS OR UNFORESEEN CIRCUMSTANCES $f-/ICH MAY ARISE THE CONTRACTOR SHALL BE RESPONSIBLE AND SHALL TAKE NECESSARY Pi?ECAU110NS TO PREVENT PUBLIC TRESPASS ONTO AREAS WERE IMPOUNDED WATERS CREATE A HAZARDOUS CONDITION Z ALL EROSION CONTROL MEASURES PROI'YDED PER THE APPROVED GRADING PLAN SHALL BE INCORPORA TED HEREON LEGEND B GRADED AREAS AROUND THE PROJECT PERIMETER MUST DRAIN AWA Y FROM THE FACE OF T---- I I DESCRIPTION SYMBOL QUANTITY SLOPE AT THE CONCLUSION OF EACH WORKING DA Y 1 r - ALL REMOVABLE PROTECTIVE DEUCES SHOW SHALL BE IN PLACE AT THE END OF EACH WORKING DA Y WEN THE FIVE "5) DAY RAIN PROBABILITY FORECAST EXCEEDS FORTY PERCENT (42X) SIL T AND OTHER DEBRIS SHALL BE REMOVED AFTER EACH RAINFALL, ffliIji 4 I STABILIZED CONSTRUCTION ENTRANCE IN (10 CM) 4 EA ALL GR14 frEZ BAGS SHALL BE BURLAP TYPE HITH J/4 INCH MINIMUM AGGRECRA J. ATTACH THE FILTER FABRIC TO 4. BACKFILL AND COMPACT THE 1/. SHOULD GERMINATION OF HYDROSEEDED SLOPES FAIL TO PROu'lDE EFFECTIVE COVERAGE THE WIRE FENCE AND EXTEND IT EXCAVATED SOIL. OF GRADED SLOPES ('90% COVERAGE) PRIOR 10 NOVEMBER 15, THE SLOPES SHALL BE INTO THE TRENCH, I SILT FENCE 340 IF STABILIZED BY PUNCH STRAW INSTALLED IN ACCORDANCE fTH SECTIOiV .35.02.3 OF THE EROSION AND SEDIMENT CONTROL HANDBOOK OF THE DEPARTMENT OF CONSERVA liON, STATE OF CALIFORNIA. TEMPORARY EROSION CONTROL PLANTING AND IRRIGATION HYDROSEED AREA 16.000 SQ. FT, ALL PERMANENT AND TEMPORARY EROSION CONTROL PLANTING AND IRRIGATION SHALL BE INSTALLED AND MAINTAINED AS REQUIRED IN SECTION 212 OF THE STANDARD SPECIFICATIONS AND THE FOLLOWING.' A. HYDROSEEDING SHALL BE APPLIED TO: 1, ALL SLOPES THAT ARE GRADED 6:1 (HORIZONTAL TO VERTICAL) OR STEEPER WHEN THEY ARE: THREE FEET OR MORE IN HEIGHT AND ADJACENT TO A PUBLIC WALL OR STREET. ALL SLOPES 4 FEET OR MORE IN HEIGHT. 2. AREAS GRADED FLATTER THAN 6:1 WHEN ANY OF THE FOLLOWING CONDITIONS EXIST: NOT SCHEDULED FOR IMPROVEMENTS(CONSTRUCTION OR GENERAL LANDSCAPING) WITHIN 60 DAYS OF ROUGH GRADING, IDENTIFIED BY THE PARKS AND RECREATION DIRECTOR AS HIGHLY VISIBLE TO THE PUBLIC, C. HAVE ANY SPECIAL CONDITION IDENTIFIED BY THE CITY ENGINEER THAT WARRANTS IMMEDIATE TREATMENT, B. HYDROSEEDED AREAS SHALL BE IRRIGATED IN ACCORDANCE WITH THE FOLLOWING CRITERIA: 1, ALL SLOPES THAT ARE GRADED 6:1 OR STEEPER AND THAT ARE: THREE TO EIGHT FEET IN HEIGHT SHALL BE IRRIGATED BY HAND WATERING FROM QUICK COUPLERS/HOSE BIBS OR A CONVENTIONAL SYSTEM OF LOW PRECIPITATION SPRINKLER HEADS PROVIDING 100% COVERAGE. GREATER THAN 8 FEET IN HEIGHT SHALL BE WATERED BY A CONVENTION— AL SYSTEM OF LOW PRECIPITATION SPRINKLER HEADS PROVIDING 100% COVERAGE. 2, AREAS SLOPED LESS THAN 6:1 SHALL BE IRRIGATED AS APPROVED BY THE CITY ENGINEER, PRIOR TO HYDROSEEDING, THE DEVELOPER SHALL SUBMIT A PROPOSED SCHEME TO PROVIDE IRRIGATION TO THE CITY ENGINEER. THE PROPOSAL SHALL BE SPECIFIC REGARDING THE NUMBERS, TYPES AND COSTS OF THE ELEMENTS OF THE PROPOSED SYSTEM. 3. IRRIGATION SHALL MAINTAIN THE MOISTURE LEVEL OF THE SOIL AT THE OPTIMUM LEVEL FOR THE GROWTH OF THE HYDROSEEDED GROWTH. C. HYDROSEEDING MIX SHALL CONSIST OF ALL OF THE FOLLOWING: 1. SEED MIX SHALL CONSIST OF NO LESS THAN: 0. 20 lbs. PER ACRE OF ROSE CLOVER b. 20 lbs. PER ACRE OF ZORRO FESCUE C. 3 lbs. PER ACRE OF E SCHOOL CIA CALIFORNICA 4 lbs. PER ACRE OF ACHILLEA MILLEFOLIA 3 lbs. PER ACRE OF ALYSSUM (CARPET OF SNOW) 1/2 lb. PER ACRE OF DIMORPHOLECA ITEMS c,d40e, AND f OF THIS SUBSECTION MAY BE OMITTED ON LOCATIONS WHERE THE AREA BEING HYDROSEEDED IS NOT VISIBLE FROM EITHER A PUBLIC STREET OR RESIDENTIAL STRUCTURES. ITEM o OF THIS SUBSECTION MUST BE INOCULATED WITH A NITROGEN FIXING BACTERIA AND APPLIED DRY EITHER BY DRILLING OR BROADCASTING BEFORE HYDROSEEDING. I. ALL SEED MATERIALS SHALL BE TRANSPORTED TO THE JOBSITE IN UNOPENED CONTAINERS WITH THE CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE CERTIFICATION TAG ATTACHED TO, OR PRINTED ON SAID CONTAINERS. J, NON—PHYTO—TOXIC WETTING AGENTS MAY BE ADDED TO THE HYDROSEED SLURRY AT THE DISCRETION OF THE CONTRACTOR. 2. TYPE 1 MULCH APPLIED AT THE RATE OF NO LESS THAN 2000 lbs PER ACRE. TYPE 6 MULCH (STRAW) MAY BE SUBSTITUTED, ALL OR PART, FOR HYDRAULICALLY APPLIED FIBER MATERIAL. WHEN STRAW IS USED IT MUST BE ANCHORED TO THE SLOPE BY MECHANICALLY PUNCHING NO LESS THAN 50Z OF THE STRAW INTO THE SOIL. NOT&Y ELECTRON/C DA TA FiLES ARE FOR REFERENCE ONL Y AND ARE NOT TO BE USED FOR HORIZONTAL OR VERTiCAL SURVEY CONTROL 'AS BUILT" RCE_______ EXP. DATE 3, FERTILIZER CONSISTING OF AMMONIUM PHOSPHATE SULFATE, 16-20-0, WITH 15Z SULPHUR APPLIED AT THE RATE OF 500 lbs. PER ACRE, D. AREAS TO BE HYDROSEEDED SHALL BE PREPARED PRIOR TO HYDROSEEDING BY: 1. ROUGHENING THE SURFACE TO BE PLANTED BY ANY OR 4 COMBINATION OF: TRACK WALKING SLOPES STEEPER THAN 6:1 HARROWING AREAS 6:1 OR FLATTER THAT ARE SUFFICIENTLY FRIABLE. C. RIPPING AREAS THAT WILL NOT BREAK UP USING ITEMS a OR b ABOVE, REVIEWED BY 13FESS/ STR No. C55187 * EXP 6/30/04 * IVI 40. 0 /94~ DRAWN BY: P.F. SCALE: AS SHOWN CTAT DESIGNED BY: J.S.T. DATE: AUGUST 2001 PROJECT NCR.: J.P.S. JOB NO,:!)-1031 ONSU L 5900 Pasteur Ct. Civil Engineering ENGINEER OF WORK: Suite 100 Planning Carlsbad, California 92008 Processing 760-931 —7700 Surveying Fax:760-931-8680 DATE: JOHN P. STROHNINCER RCE: C55187 I INSPECTOR DATE -f CITY OF CARLSBAD SHEETS -i lilENGINEERING DEPARTMENT 5 2. CONDITIONING THE SOILS SO THAT IT IS SUITABLE FOR PLANTING BY: ADJUSTING THE SURFACE SOIL MOISTURE TO PRO VIOE A DAMP BUT NOT SATURATED SEED BED. THE ADDITION OF SOIL AMENDMENTS, PH ADJUSTMENT, LEACHING OR COVERING SALINE SOILS TO PROVIDED VIABLE CONDITIONS FOR GROWTH. EROS/ON CONTROL PLANS FOR: THE CREST ESTATES MINOR SUBDIVISION 01-07 E. 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. APPROVED LLOYD B. HUBBS CITY ENGINEER RCE 23889 EXP, 12-31-01 DATE DWN BY: PROJECT NO, DRAWING NO. DATE INITIAL DATE INITIAL DATE M.S.01-07 396-3,4 INITIAL CHKD BY: I I I i I i 1 ENGINEER OF WORK REVISION DESCRIPTION I OTHER APPROVAL I CITY APPROVAL I RVVD BY,-ii I I©2001 O'Day Consultants, Inc. G\J0BS\001031\0031EC01.D'./G 8-19-02 2:47:53 pm EST XREF: 0031EC OL PLA NS FOR TES LOT 24 lilA? IVO. 3905 FRONT LOT L/NL FOR LOT x 5424 10, SCALE 1" = 20 1@2001 O'Day Consultants, Inc. 01O31\0031ECO2.fl\.I 8-19-02 421 om XREFS: 0031ECRD. 0031MAP, 0031EC 0031TP01, 00317UTL. 0031U1L 0031ERO