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CUP 02-32; Bob Baker Vehicle Storeage Lot; Conditional Use Permit (CUP) (2)
STORMWATER MANAGEMENT PLAN AND STORMWATER MAINTENANCE PLAN RECEIVED JAN 30 M BOBBAKER CITYOFCARLSBAD, PLANNING DEPT TEHICLE STORAGE LOT CANNON ROAD AND AVENIDA ENCINAS CITY OF CARLSBAD Prepared for: BOB BAKER ENTERPRISES, INC. 591 Camino de la Reina, Suite 1100 SanDiego, CA92108 Prepared by: bhA, Inc. land planning, civil engineering, surveying 5115 Avenida Encinas, Suite L Carlsbad, CA 92008-4387 (760) 931-8700 January 27, 2003 W.O. 636-0851-600 TABLE OF CONTENTS 1. INTRODUCTION 1 1.1 Project Description 1 1.1.1. Hydrologic Unit Contribution 1 1.1.2. Beneficial Use 2 1.1.2.1. Inland Surface Waters 3 1.1.2.2. Costal Waters 3 1.1.2.3. Groundwaters 4 1.1.3. WATER QUALITY OBJECTIVE 4 1.1.3.1. Inland Surface Waters 4 1.1.3.2. Groundwaters 5 2. CHARACTERIZATION OF PROJECT RUNOFF 6 2.1. Expected Discharges 6 2.2. Soil Characteristics 6 3. MITIGATION MEASURES TO PROTECT WATER QUALITY ... 6 3.1. Construction BMPs 6 3.2. Post-construction BMPs 7 4. OPERATION AND MAINTENANCE PROGRAM 9 4.1. Post-construction BMPs 9 5. FISCAL RESOURCES 9 6. CONCLUSION 10 7. REFERENCES 11 ATTACHMENTS A. Location Map B. Water QuaHty Exhibit C. Suntree Technologies Grate Inlet Skimmer Box Details D. Water Quality Standards Inventory Database E. Grading Plan/Erosion Control Plan - showing Construction BMPs 1. INTRODUCTION A Stormwater Management Plan (SWMP) is required under the County of San Diego Watershed Protection, Stormwater Management, and Discharge Control Ordinance (Section 67.817). The purpose of this SWMP is to address the water quaHty impacts from the proposed Vehicle Storage Lot for Bob Baker Enterprises - SDP /CDP . Best Management Practices (BMPs) will be utiHzed to provide a long-term solution to water quality. This SWMP is intended to ensure the effectiveness of the BMPs through maintenance over the long-term. The SWMP is subject to revisions as needed by the engineer. 1.1 Project Description This is a Stormwater Management Plan (SWMP) and Stormwater Maintenance Plan (SMP) for the Bob Baker Vehicle Storage Lot - SDP /CD? . The property is in the City of Carlsbad, near the Car Country of Carlsbad. The site is bordered by Cannon Road to the north, Avenida Encinas to the east, and the SDNR Railroad tracks to the west, see the enclosed Thomas Brothers map (Attachment "A"). The project site is currently vacant but had been previously graded to its existing condition. In its existing condition, the site is divided into three drainage basins. Approximately one third (1/3) of the existing site (existing Drainage Area 1) drains easterly from the ridge Hne to the gutter along Avenida Encinas and from the median of Avenida Encinas to the same gutter, then into an existing curb inlet located at the south curb return on the southwest corner of Cannon Road and Avenida Encinas. The 1.33 acre portion of the site (existing Drainage Area 2) drains westerly from the ridge line off the property into the SDNR Railroad Right of Way. The remaining 0.31 acre portion of the site (existing Drainage Area 3) drains northerly from the ridge line of the property toward Cannon Road to the existing gutter and flows easterly into an existing curb inlet on Cannon Road. The two curb inlets are part of the same storm drain system. The proposed Vehicle Storage project will divert most of the runoff from entering into the SDNR Railroad Right of Way. A grass swale wiU be constructed to collect most of the runoff from the site. The grass swale will slow the time of concentration and allow more ground water absorption before runoff flows into the street, or into the catch basin located at the northerly end of the proposed parking lot. 1.1.1. Hydrologic Unit Contribution The project falls within the Aqua Hedionda Hydrologic Area Boundary 904.30 which is a part of the Carlsbad Hydrologic Unit, Hydrologic Unit Basin Number 904. The water bodies in The Aqua Hedionda Hydrologic Area are Aqua Hedionda Creek, Aqua Hedionda Creekv, Letterbox Canyon, and Aqua Hedionda Lagoon. The total watershed size for Carlsbad Hydrologic Basin is 210 square miles or 134,400 acres, of which the site is composed of 2.44 acres, or 0.0018 percent. 1.1.2. Beneficial Uses The beneficial uses for the hydrologic units are included in Table 1.2.2. This table has been extracted from the Water Quality Control Plan for the San Diego Basin. MUN - Municipal and Domestic Supply: Includes uses of water for community, mihtary, or individual water supply systems including, but not limited to, drinking water supply. The "-I-" indicate that the water body has been exempted by the Regional Board from the municipal use designation under terms and conditions of State Board Resolution No. 88-63, Source of Drinking Water Policy. AGR - Agricultural Supply: Includes uses of water for farming, horticulture, or ranching including, but not limited to, irrigation, stock watering, or support of vegetation for range grazing. IND - Industrial Service Supply: Includes uses of water for industrial activities that do not depend primarily on water quaHty including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil well re-pressurization. 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 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 use 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. 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. 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). MAR - Marine Habitat: Includes uses of water that support marine ecosystems including, but not Hmited to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). 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. WARM - Warm Freshwater Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation or enhancement of aquatic habitats, vegetation, fish or wildlife, including invertebrates. WILD - Wildlife Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlife, (e.g., mammals, birds, reptiles, amphibians, invertebrates), or wildlife water and foot 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. 1.1.2.1. Inland Surface Waters Inland Surface waters have the following beneficial uses as shown on Table 1.2.2 of Water QuaHty Control Plan for the San Diego Basin (9). Table 1.2.2 Beneflcial Uses for Inland Surface Waters Hydrologic Unit Number Mun Arg T3 C t—( Reel Rec2 Warm Wild Rare 904.31 Agua Hedionda Creek X X X X X X X Letterbox canyon X X X X X X X -I- = Excepted from Municipal X = Existing Beneficial Use 1.1.2.2. Coastal Waters Coaster waters have the following beneficial uses as shown on Table 1.2.3 of Water Quality Control Plan for the San Diego Basin (9). Table 1.2.3 Beneflcial Uses for Inland Surface Waters Hydrologic Unit Number c Reel Rec2 Comm u Wile Rare rt Aqua Migr Shell 904.31 Agua Hedionda Lagoon X X X X X X X X X X X -\- = Excepted from Municipal X = Existing Beneficial Use 1.1.2.3. Groundwaters Ground waters have the foHowing beneficial uses as shown on Table 1.2.5 of Water Quality Control Plan for the San Diego Basin (9). Table 1.2.5 Beneflcial Uses for Inland Surface Waters Hydrologic Unit Number Mun •a c h—1 904.30, 904.31 Agua Hedionda Los Monos 2 X X X Los Monos 5 0 0 0 Los Monos 6 0 X 0 + = Excepted from Municipal X = Existing Beneficial Use o = Potential Beneficial Use 1.1.3 WATER QUALITY OBJECTIVE 1.1.3.1 Inland Surface Water The Inland Surface Water quality Objective for the hydrologic units are included in Table 1.3.2. This table has been extracted from the Water Quality Control Plan for the San Diego Basin. Table 13.2 Hydrologic 00 n 0 o rt N c CO < Pi o l-l Unit H & CQ CQ Q fc o Number P O d H INLAND o o O in o ITi o vo a . IT) o m c o o cs q SURFACE 1/5 n fS d d o 2: WATER 904.30 Endnotes For Table 1.3.2 Concentration of nitrogen and phosphorus, by themselves or in combination with other nutrients, shaH be maintained at levels below those which stimulate algae and emergent plant growth. Threshold total Phosphorus (P) concentrations shaH not exceed 0.005 mg/1 in any stream at the point where it enters any standing body of water, nor 0.025 mg/1 in any standing body of water. A desired goal in order to prevent plant nuisances in streams and other flowing water appears to be 0.1 mg/1 total P. These values are not to be exceeded more than 10% of the time unless studies of the specific body in question clearly show that water quality objective changes are permissible and changes are approved by the Regional Board. Analogous threshold values have not been set for nitrogen compounds; however, natural rations of nitrogen to phosphorus are to be determined by surveillance and monitoring and upheld. If data are lacking, a ratio of N:P = 10:1 shaH be used. Note - Certain exceptions to the above water quaHty objectives are described in Chapter 4 in the section titled Discharges to Coastal Lagoons from Pilot Water Reclamation Projects and Discharges to Surface Waters. 1.1.3.2 Ground Water The Ground Water quaHty Objective for the hydrologic units are included in Table 1.3.3. This table has been extracted from the Water Quality Control Plan for the San Diego Basin. Table 1.3.3 Hydrologic 00 Q 0 o rt o C C/D < o D Unit c/3 Z CQ OQ Q fc O Number O l-l u 3 H GROUND WATER 1200 o o OOS o o • © 0.05 d 0.75 None >n l—l rH 904.30(a) Endnotes For Table 1.3.3 a) The water quality objectives do not apply westerly of the easterly boundary of Intestate Highway 5. The objectives for the remainder of the Hydrologic Area (Subarea) are as shown. 2. CHARACTERIZATION OF PROJECT RUNOFF According to the Califomia 1998 303(d) list published by the San Diego Regional Water Quality Control Board, Agua Hedionda Lagoon (Hydrologic Unit - 904.310) is an impaired water body that is associated with this project. Agua Hedionda Lagoon is impaired by High Coliform Count and Sedimentation/ Siltation. 2.1 Expected Discharges There is no sampling data avaUable that identifies and poHutants for the existing site condition. The project is not expected to generate significant amounts of non-visible pollutants. However, the following constituents are commonly found on similar developments and could affect water quaHty: Sediment discharge due to construction activities. Nutrients from fertilizers and pet waste. Trash and debris deposited in drain inlets. Hydrocarbons from automobile emissions, fuel leaks, and fluid drips. Pesticides and herbicides from landscaping and home use. 2.2 Soils Characteristics The project area consists of SoH Type "C". No evidence of scouring or excessive erosion resulting from concentrated runoff was in evidence at the site. 3. MITIGATION MEASURES TO PROTECT WATER QUALITY To address water quality for the project, BMPs will be implemented during construction and post-construction. The construction activities is regulated by the California State wide General Construction Permit and City of Carlsbad. 3.1 Construction BMPs Construction BMPs wiH be implemented as shown on the Grading Plan marked as Exhibit E and attached to the back of this report as (Attachment "E"). A Hsting of temporary BMP's include the following: Silt Fence Stockpile management SoHd Waste management Stabilized construction entrance/ exit Vehicle and equipment maintenance Gravel bag berm Gravel bag barrier Material spill prevention and control Concrete waste management Water conservation practices Dust controls Scheduling construction project to reduce the amount and duration of soil exposed to erosion by wind, rain, runoff and vehicle parking. Construction BMPs for this project wiH be selected, constructed, and maintained so as to comply with applicable ordinances and guidance documents. The Contractor on site will be responsible for implementing and maintaining the BMPs. 3.2 Post-construction BMPs In the post- development phase, potential pollutants include: automobile emissions, fuel leaks, fluid drips, fertilizer nutrients, pesticides, and herbicides. Landscaping is incorporated into the plans. The landscaping will consist of non-native plants. The goal is to achieve plant establishment expeditiously to reduce erosion. The irrigation system for these landscaped areas wHl be monitored to reduce over irrigation. Scheduled pavement sweeping should be part of regular maintenance by the owner. Additionally, a grass lined swale is added to slow the time of runoff concentration prior to flowing into a "Flow Based BMP" drainage structure with a grate inlet skimmer box which will be utilized for removal of sediment, debris, trash, and petroleum hydrocarbons from the runoff water before being discharged into the curb inlet. See Attachment "C" for specifications and calculations. AH post development BMPs wiH be inspected and maintained regularly by the owner. Placement of the BMPs are noted on the Water Quality Exhibit labeled "Exhibit B" and attached to the back of this report as (Attachment "B"). Table 3.2 lists target pollutants and efficiency for Post-Construction BMPs. Table 3.2 POST DEVELOPMENT PERMANENT BMP's Permanent BMP Target Pollutants Efficiency Seeding and Planting (ESCIO) Sediment, and toxic materials. Likely to have a significant impact in controlling sediment', Vegetative cover plays an extremely important role in controlling erosion by shielding the soil surface from the impacts of falling rain, slowing the velocity of runoff (thereby permitting greater infiltration), maintaining the soil's capacity to absorb water, and holding soil particles in place. Erosion Potential vs Slope Low erosion potential - 0 to 5 percent slopes Moderate erosion potential - 5 to 10 percent slopes High erosion potential - slope greater than 10 percent Suntree Technologies Grate Inlet Skimmer Box Filter InsertIsubstances (Attachment "C") Ammonia, oxygen demanding , fecal coliform, nitrite and nitrate, total kjeldahl, suspended solids, and metals Efficiency method for filtering storm water runoff during initial runoff. See pollutant removal efficiency specifications in References section. See treatment flow rate calculation in References section. California Storm Water Best Management Practice Handbook. 4. OPERATION AND MAINTENANCE PROGRAM The operation and maintenance requirements for post-construction BMPs are shown in Table 4.1 Table 4.1 Post-construction BMPs Preventative Maintenance and Routine Inspection: IvDeofBMP: Seeding and Planting (Landscaping) Routine Action Inspection Maintenance Indicator Plant Health and excessive foliage Field Measurement Excessive foliage and grass height Measurement Frequency Weekly Maintenance Activity Water, fertilize, prune and mow Site Specific Requirements None Tvoe of BMP: Suntree Technologies - Grate Inlet SIdmmer Box filter Routine Action: Inspection Maintenance Indicator: Accumulation of silt and debris Field Measurement: Accumulation of debris in filter basket Maintenance Frequency: Quarterly Maintenance Activity: Empty filter baskets, replace hydrocarbon absorption boom. Site Specific Requirements: Mone 5. FISCAL RESOURCES The maintenance of post-construction BMPs will be the responsibility of the owner. The Trees, shrubs, vines and ground cover costs are based on species used. The maintenance cost for Suntree Technologies - Grate Inlet Skimmer Box Filter Insert ( see Attachment "C") is estimated to cost $240 per year. 6. CONCLUSION No adverse effects will impact the downstream properties due to storm water runoff. Construction BMPs, such as, silt fence, gravel bags, stabilized construction entrance, and so on, wHl reduce potential pollutant discharge during construction. Permanent BMPs, such as, a grass swale and grate inlet skimmer box, permanent re-vegetation and pavement sweeping, wHl minimize potential post construction pollutants from entering the waterways. 10 7. REFERENCES Water Quality Control Plan for the San Diego Basin (9) California Regional Water Quality Control Board, San Diego Region, September 8,1994 County of San Diego Stormwater Management Requirements and Guidelines 2000-2001 California Stormwater Best Management Practice Handbook, Municipal, March 1993 1998 California 303 (d) List and TMDL Schedule approved by USEPA, May 12,1999 11 ATTACHMENT «A" LOCATION MAP CITY OF ENCINITAS VICINITY MAP NTS KEY TO REGION AN_PASpU Wo|lford 101- ^B^lO/OAL ^'UAJJTY (W/OT/^l^ ^z^) >^ P/<S^i5> //Yjpy^/>0^/C <^A5^/V /'^AAJAJ/A/^ ATTACHMENT "B" WATER QUALITY EXHIBIT ATTACHMENT "C" GRATE INLET SKIMMER BOX DETAILS TmhmaDlldpmm Emco BIO CLEAN ENVIRONMENTAL SERVICES STORMWATER FILTRATION SYSTEMS (760) 433-7640 FAX (760) 433-3176 SALES X SERVICE X INFORMATION (Cunirlb IIiiii]l©tt Ba§Ik©ti Stonm IB(!D(i!)nnn BaM© Mm. BODS ENVIRONMENTAL SERVICES P.O. Box 869 Oceanside, CA 92049 Ph: (760) 433-7640 FAX: (760) 433-3176 J gkent(gbioGleanenvironffierlle www.biocleanenvironmental.net Infrastructure Stormwater Filtration Systems T(BcIhm(!})Il(!Dm(BS EmCo BIO CLEAN ENVIRONMEffTAL SERVICES INC. P O Box 869, Oceanside CA 92049 (760) 433-7640 Fax (760) 433-3176 www. biocleanen vironmental .net Grate Inlet Skimmer Box Patented ApplwmHSdPiM Multistage Filtration Captures Everything From Hydrocarbons, To Sediment, To Grass Clippings, To Human Trash...Everything! NdP FmMem Grate Inlet Skimmer Box Patented Emsf TdD CUmm The skimmer tray and deflection shield are a single unit, and can be easily removed during cleaning. Once removed, the filter box can be tumed over and emptied into a container f transport to a waste facility. The Grate Inlet Skimmer Box is made of durable fiberglass, with Stainless steel filter screens backed by heavy duty aluminum grating. Suntree Technologies has the ability to make custom shaped units to accommodate any unique retrofit requirement. Brim OmUAfleir' Emek Stlmm Emmtt Installation is quick and simple. Just remove the grate, insert the Grate Inlet Skimmer Box, and then replace the grate. mtaEh Fmil TeekmaDhgim Emco BIO CLEAN ENVIRONMENTAL SERVICES INC P O Box 869, Oceanside CA 92049 (760)433-7640 Fax (760) 433-3176 www.biocleanenvironmental.net BIO CLEAN ENVIRONMENTAL SERVICES INC. P O Box 869, Oceanside CA 92(M9 (760) 433-7640 Fax (760) 433-3176 wvAv.biocleanenvironmental.net Storm Water Grate Inlet Skimmer Box Patented Storm Water Parking Lot Drain Grate Skimmer Tray " Overflow Skimmer Tray WHh Hydrocarbon Boom Stage 3 Filters With Large Sieve Size For High Volume Flow To Capture Trash and Other Floatables 'Water Turbulence Deflection Shield Stage 2 Filters With Small Sieve Size To Capture Sand and Other Tiny Pollutants / \ Parking Lot ] Out To Storm Pipe Concrete Catch Basin OAH incoming stormwater passes through skimmer tray and comes into contact with hydrocarbon absorption boom. O Multi-stage filtration process captures a wide variety of pollutants, from hydrocarbons, grains of sand, grass clippings, to paper cups. O The deflection shield keeps the majority of the water turbulence adjacent to the small sieve size filters preventing the escape of tiny particles. OThe skimmer tray prevents floatables from escaping through the overflow holes. Grate Inlet Skimmer Box Functional Descriptions Stage 1 QAU incoming stormwater passes through skimmer tray and comes into contact with hydrocarbon absorption boom. O The entire surface area of the hydro- carbon absorption boom acts as an apparent opening for the skimmer tray drains, and prevents sand and debris fi"om inhibiting the water flow through these drains. Stage 3 Oif the stormwater flow exceeds the flow capacity of the lower filters, the skimmer box begins to fill and the upper filters add to the flow capacity of the lower filters. OThe upper filters have a large sieve size for high volume flow capacity, able to contain larger debris, but un- affected by sand and other tiny parti- cles. Stage 2 OAll stormwater and solids find their way into the lower section of the skimmer box where filters of small sieve size capture all the solids and allow the stormwater to pass into the catch basin. OThe water turbulence deflection shield keeps the majority of the wa- ter turbulence adjacent to the small sieve size filters preventing the es- cape of tiny particles through the up- per filters. Stage 4 Ojf the stormwater flow exceeds the flow capacity of both the lower fil- ters and the upper filters, the skim- mer box begins to fill allowing the imobstmcted overflows, near the top and behind the skimmer tray, to over- flow into the catch basin. OThe skimmer tray helps to prevent floatables fi-om escaping out the overflows. After the storm event passes, the entire Grate Inlet Skim- mer Box completely drains of all water and dries out. All of the collected soHds also dry out. Organic contami- nates such as grass clippings and leaves are allowed to dry out, and in doing so, lose their nutrient pollutant load. The skimmer tray and water deflection shield are at- tached to each other allowing easy removal. The ca tured contents ofthe skimmer box can be easily empti into a container for transport to the local waste facility. TechmdDlldDglm EnCo BIO CLEAN ENVIRONMENTAL SERVICES INC. P O Box 869, Oceanside CA 92049 (760) 433-7640 Fax (760) 433-3176 www.biocleanenvironmental.net Inc. land planning, civil engineering, surveying 5115 Avenida Encinas, Suite L, Carlsbad, CA 92008 (760)931-8700 Fax (760) 931-7780 Name Checked by Date W.O. Sheet of Client Job Description &-McXs.Z '^rot^ Xr/^ A/O CPS' 5o. CiA --/p.9o)^/iz:>Oi^'^}' /^^a^J'^ u>'C w PoT-^'d' //\(c^r 3(T>< ***+*****************************************************+****************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT 1985,1981 HYDROLOGY MANUAL (c) Copyright 1982-98 Advanced Engineering Software (aes) Ver. l.SA Release Date: 01/01/98 License ID 1459 Analysis prepared by: BHA INC. 5115 AVENDIA ENCINAS, SUITE L CARLSBAD, CA 92008 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ************************** DESCRIPTION OF STUDY ************************** * proposed hydrology * * * * * ************************************************************************** FILE NAME: 851-Pl.DAT TIME/DATE OF STUDY: 11:37 1/27/2003 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: 1985 SAN DIEGO MANUAL CRITERIA USER SPECIFIED STORM EVENT(YEAR) = 10.00 6-HOUR DURATION PRECIPITATION (INCHES) = 1.200 SPECIFIED MINIMUM PIPE SIZE(INCH) = 12.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = .90 SAN DIEGO HYDROLOGY MANUAL "C"-VALUES USED NOTE: ONLY PEAK CONFLUENCE VALUES CONSIDERED FLOW PROCESS FROM NODE 10.00 TO NODE 20.00 IS CODE = 21 »>»RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< *USER SPECIFIED(SUBAREA): COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .7300 INITIAL SUBAREA FLOW-LENGTH = 215.00 UPSTREAM ELEVATION = 4 8.00 DOWNSTREAM ELEVATION = 4 5.40 ELEVATION DIFFERENCE = 2.60 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.166 10 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.139 SUBAREA RUNOFF(CFS) = .33 TOTAL AREA(ACRES) = .21 TOTAL RUNOFF(CFS) = .33 **************************************************************************** FLOW PROCESS FROM NODE 20.00 TO NODE 60.00 IS CODE = 6 >»»COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< UPSTREAM ELEVATION ^ 4 5.40 DOWNSTREAM ELEVATION = 43.70 STREET LENGTH(FEET) = 390.00 CURB HEIGHT{INCHES) = 6. STREET HALFWIDTH(FEET) = 23.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK = 21.50 INTERIOR STREET CROSSFALL(DECIMAL) = .020 OUTSIDE STREET CROSSFALL(DECIMAL) = .083 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = .62 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) = .26 HALFSTREET FLOODWIDTH(FEET) = 6.54 AVERAGE FLOW VELOCITY(FEET/SEC.) = 1.13 PRODUCT OF DEPTH&VELOCITY = .29 STREETFLOW TRAVELTIME(MIN) = 5.76 TC(MIN) = 14.93 10 YEAR RAINFALL INTENSITY{INCH/HOUR) = 1.561 *USER SPECIFIED(SUBAREA): COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .6900 SUBAREA AREA(ACRES) = .53 SUBAREA RUNOFF(CFS) = .57 SUMMED AREA(ACRES) = .74 TOTAL RUNOFF(CFS) = .90 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) = .28 HALFSTREET FLOODWIDTH(FEET) = 7.88 FLOW VELOCITY(FEET/SEC.) = 1.22 DEPTH*VELOCITY = .35 **************************************************************************** FLOW PROCESS FROM NODE 60.00 TO NODE 60.00 IS CODE = 1 »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 14.93 RAINFALL INTENSITY(INCH/HR) = 1.56 TOTAL STREAM AREA(ACRES) = .74 PEAK FLOW RATE(CFS) AT CONFLUENCE = .90 **************************************************************************** FLOW PROCESS FROM NODE 30.00 TO NODE 40.00 IS CODE = 21 »>»RATIONAL METHOD INITIAL SUBAREA ANALYSIS«<« *USER SPECIFIED(SUBAREA): COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8300 INITIAL SUBAREA FLOW-LENGTH = 200.00 UPSTREAM ELEVATION = 4 8.30 DOWNSTREAM ELEVATION = 4 6.40 ELEVATION DIFFERENCE = 1.90 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 6.992 10 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.547 SUBAREA RUNOFF(CFS) = 1.04 TOTAL AREA(ACRES) = .49 TOTAL RUNOFFtCFS) = 1.04 FLOW PROCESS FROM NODE 40.00 TO NODE 50.00 IS CODE = 51 »»>COMPUTE TRAPEZOIDAL CHANNEL FLOW««< »»>TRAVELTIME THRU SUBAREA««< UPSTREAM NODE ELEVATION = 4 6.40 DOWNSTREAM NODE ELEVATION = 4 4.60 CHANNEL LENGTH THRU SUBAREA(FEET) = 34 5.00 CHANNEL SLOPE = .0052 CHANNEL BASE(FEET) = 3.00 "Z" FACTOR = .500 MANNING'S FACTOR = .030 MAXIMUM DEPTH(FEET) = .50 CHANNEL FLOW THRU SUBAREA{CFS) = 1.04 FLOW VELOCITY(FEET/SEC) = 1.30 FLOW DEPTH(FEET) = .25 TRAVEL TIME(MIN.) = 4.42 TC(MIN.) = 11.41 **************************************************************************** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 8 »»>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW««< 10 YEAR RAINFALL INTENSITY(INCH/HOUR) = 1.857 *USER SPECIFIED(SUBAREA): COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8200 SUBAREA AREA(ACRES) = 1.00 SUBAREA RUNOFF(CFS) = 1.52 TOTAL AREA(ACRES) = 1.4 9 TOTAL RUNOFF(CFS) = 2.56 TC(MIN) = 11.41 + + I FLOW FROM VEHICLE PARKING LOT - DETENTION BASIN | I i I I + -I- **************************************************************************** FLOW PROCESS FROM NODE 50.00 TO NODE 50.00 IS CODE = 7 »»>USER SPECIFIED HYDROLOGY INFORMATION AT NODE«<« USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) = 23.00 RAIN INTENSITY(INCH/HOUR) = 1.18 TOTAL AREA(ACRES) = 1.49 TOTAL RUNOFF(CFS) = 1.60 FLOW PROCESS FROM NODE 50.00 TO NODE 60.00 IS CODE = 4 »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »>»USING USER-SPECIFIED PIPESIZE««< DEPTH OF FLOW IN 18.0 INCH PIPE IS 2.9 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 8.5 UPSTREAM NODE ELEVATION = 42.10 DOWNSTREAM NODE ELEVATION = 4 0.40 FLOWLENGTH(FEET) = - 37.00 MANNING'S N = .010 GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES PIPEFLOW THRU SUBAREA(CFS) = 1.60 TRAVEL TIME(MIN.) = .07 TC{MIN.) = 23.07 *************************************** FLOW PROCESS FROM NODE 60.00 TO NODE 60.00 IS CODE = 1 >»»DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< >»»AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 23.07 RAINFALL INTENSITY(INCH/HR) = 1.18 TOTAL STREAM AREA(ACRES) = 1.4 9 PEAK FLOW RATE(CFS) AT CONFLUENCE = 1.60 ** CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 .90 14.93 1.561 .74 2 1.60 23.07 1.179 1.49 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN.) (INCH/HOUR) 1 2.11 14.93 1.561 2 2.28 23.07 1.179 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 2.28 Tc(MIN.) = 23.07 TOTAL AREA(ACRES) = 2.23 **************************************************************************** FLOW PROCESS FROM NODE 60.00 TO NODE 60.00 IS CODE = 1 »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 23.07 RAINFALL INTENSITY(INCH/HR) = 1.18 TOTAL STREAM AREA(ACRES) = 2.23 PEAK FLOW RATE(CFS) AT CONFLUENCE = 2.28 **************************************************************************** FLOW PROCESS FROM NODE 70.00 TO NODE 80.00 IS CODE = 21 »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS«<« *USER SPECIFIED (SUBA-REA) : COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .4500 INITIAL SUBAREA FLOW-LENGTH = 22.00 UPSTREAM ELEVATION = 52.00 DOWNSTREAM ELEVATION = 4 5.00 ELEVATION DIFFERENCE = 7.00 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 1.732 *CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED. TIME OF CONCENTRATION ASSUMED AS 6-MINUTES 10 YEAR RAINFALL INTENSITY{INCH/HOUR) = 2.811 SUBAREA RUNOFF(CFS) = .10 TOTAL AREA(ACRES) = .08 TOTAL RUNOFF(CFS) = .10 FLOW PROCESS FROM NODE 80.00 TO NODE 80.00 IS CODE = 1 »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 6.00 RAINFALL INTENSITY(INCH/HR) = 2.81 TOTAL STREAM AREA(ACRES) = .08 PEAK FLOW RATE(CFS) AT CONFLUENCE = .10 **************************************************************************** FLOW PROCESS FROM NODE 90.00 TO NODE 100.00 IS CODE = 21 »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS«<« *USER SPECIFIED(SUBAREA): COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .4500 INITIAL SUBAREA FLOW-LENGTH = 110.00 UPSTREAM ELEVATION = 47.40 DOWNSTREAM ELEVATION = 4 6.90 ELEVATION DIFFERENCE = .50 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 15.959 *CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED. 10 YEAR RAINFALL INTENSITY(INCH/HOUR) = 1.4 96 SUBAREA RUNOFF(CFS) = .09 TOTAL AREA(ACRES) = .14 TOTAL RUNOFF(CFS) = .09 **************************************************************************** FLOW PROCESS FROM NODE 100.00 TO NODE 100.00 IS CODE = 1 »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< »>»AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES«<« TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: TIME OF CONCENTRATION(MIN.) = 15.96 RAINFALL INTENSITY(INCH/HR) = 1.50 TOTAL STREAM AREA(AC-RES) = .14 PEAK FLOW RATE(CFS) AT CONFLUENCE = .09 ** CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 2.28 23.07 1.179 2.23 2 .10 6.00 2.811 .08 3 .09 15.96 1.496 .14 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN.) (INCH/HOUR) 1 1.11 6.00 2.811 2 1.94 15.96 1.496 3 2.40 23.07 1.179 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 2.40 Tc{MIN.) = 23.07 TOTAL AREA(ACRES) = 2.45 END OF STUDY SUMMARY: PEAK FLOW RATE(CFS) = 2.40 Tc(MIN.) = 23.07 TOTAL AREA(ACRES) = 2.4 5 END OF RATIONAL METHOD ANALYSIS Poge 5 49 37 J -36- 24- 9L PLAN I50ME:TR/C USE U.S.F. §6210 GRATE Grate Inlet Skimmer Box for Florida Type C Inlet Fiow Specifications For Empty Unit Description of filter opening Percent Open Boaad cn Dtmanaiona Obstructed Percent otstntcijng th« oparmga kt Total Square Inches per Unit Square Inches • of Total Unobstructed Openings Flow Rate (Cubic Feet per Second) 1Sjt14 maah sfoMoss aM bottom end lowar aide man 68Z 0% 263 178 9.7 cfs IQKW imah atdnlata atmal «erMn in canfar aida Cltara 56Z oz 211 118 5.8 cfs 3/4'K 1-3/4' fkOtmod axpandad eluminum in upper aida fStor 62% oz 211 130 5.5 cfs Stdmmar pntadad t^>par fy-Paaa Hoias 100% 0% 211 211 7.3 cfs Total: 28.3 cfs lu — 2 CLR • if4 BARS y €' 8" Q.C.E.W. SECTION BIO CLEAN ENVIRONMENTAL SERVICES P O Box 869, Oceanside, CA 92049 Phone (760) 433-7640 Fax (760) 433-3176 777/S /s information on the Great Inlet Skimmer Box for use in DOT "C" INLET STRUCTURES. Part / GISB-C-28-36-25 All Dimensions ore in inches, unless otherwise noted. Suntree Technologies 720 Mullet Road Cape Canaveral Elorida 32920 PH: J21-799-0001 Page 6 Remove grate. Insert G.I.S.B. Reinstall grate. 27^ Section Top View 20 CD CD Side Vie w •— /, 7 0 tnd Vie\ This is information on the Great Inlet Skimmer Box for use in DOT "C" INLET STRUCTURES Part / GlSB-C-28-36-25 BIO CLEAN ENVIRONMENTAL SERVICES P O Box 869, Oceanside, CA 92049 Phone (760) 433-7640 Fax (760) 433-3176 All Dimensions are in inches, unless otherwise noted. Suntree Technologies 720 Mullet Road Cape Canaveral Elorida 32920 PH: 321-799-0001 FROM : BiO-CLEPiN ENU IRONMEN'(HL PnUNE NJ. ' tit.'-, j j-).. I D H-pr. BIO CLEAN ENVIRONIVIENTAL SERVICES STORMWATER FILTER SERVICE PROGRAM Eff*c«fve March 2001 Grate Inlet Skimmer Box Up to 28" X 36" $67.00 per Unit 29" X 37 up to 48" x 54" $87.00 per Unit Curb Inlet Basket 30" to 108" $67.00 per Unit Extra Capacity 30" to 108" $87.00 per Unit Service Includes: Disposal of debrb captured by filtration device. Replacement of Hydrocarbon Absoiption Boom. Report on debris and condition of filters along with recotmnendations, suggestions and changes for each filter. Any specific test that needs to be done of filtration systems will be quoted on a per test basis. Bio Clean Environmental Service maintenance program is based upon normal wear and removal of normal debris and hydrocarbon booms form stormwater filters. A minimum of 10 units per day in needed for service. Units can be a combination of Grate Inlet Skinuner Boxes and Curb Inlet Baskets. Bio Clean Environmental Services reserves the right to service filter systems that have misused, vandalized, illegally dumped into or not used for intended puiposes. BIO CIMAH ENVIRONMENTAL SERVICES P O BOX 869, OCEANSIDE CA 92049 (760) 433-7640 PAX (760) 433-3176 ATTACHMENT "D" WATER QUALITY STANDARDS INVENTORY- DATABASE Lagoon which lies totally within the Camp Pendleton Naval Reservation of the U.S. Marine Corps. The slough at the mouth of the river is normally closed off from the ocean by a sandbar. The major surface water storage areas are Vail Lake and O'Neill Lake. Annual precipitation ranges from less than 12 inches near the coast to more than 45 inches inland near Palomar mountain. The San Margarita Hydrologic Unit is comprised of the following nine hydrologic areas; the Ysidora, Deluz, Murrieta, Auld, Pechanga, Wilson, Cave Rocks, Aguanga, and Oak Grove Hydrologic Areas. San Luis Rey Hydrologic (3.00) Unit San Luis Rey Hydrologic Unit is a rectangular area of about 565 square miles, and includes the population centers of Oceanside, and Valley Center, and portions of Fallbrook and Camp Pendleton. In addition there are several Indian reservations in the unit. The major stream system, the San Luis Rey River, is interrupted by Lake Henshaw, one of the largest water storage areas in the San Diego Region. Annual precipitation is heavier than in other units, ranging from iess than 12 inches near the ocean to 45 inches near Palomar mountain. The San Luis Rey Unit contains two coastal lagoon areas, the mouth of the San Luis Rey River and Loma Alta Slough. The mouth of the San Luis Rey River is entirely within the city of Oceanside and is adjacent to the city's northern boundary. The slough area at the mouth of the river is contiguous with Oceanside harbor. Loma Alta Slough is entirely within the city of Oceanside and is the mouth of Loma Alta Creek. The slough is normally blocked off from the ocean by a sandbar. The San Luis Rey Hydrologic Unit is comprised of the following three hydrologic areas; the Lower San Luis, Monserate and Warner Valley Hydrologic areas. Carlsbad Hydrologic Unit (4.00) Carlsbad Hydrologic Unit is a roughly triangular- shaped area of about 210 square miles, extending from Lake Wohlford on the east to the Pacific ocean on the west, and from Vista on the north to Cardiff- by-the-Sea on the south. The unit includes the cities of Oceanside, Carlsbad, Leucadia, Encinitas, Cardiff-by-the-Sea, Vista, and Escondido. The area is drained by Buena Vista, Agua Hedionda, San Marcos and Escondido creeks. The Carlsbad Unit contains four major coastal lagoons; Buena Vista, Agua Hedionda, Batiquitos and San Elijo. Buena Vista lies between the cities of Carlsbad and Oceanside, and is partially within each city. A sandbar occasionally forms across the mouth forming an ocean beach. The water level in the lagoon is maintained by an inflow of rising groundwater and return irrigation water from the area upstream on Vista Creek. A portion of the lagoon has been designated as a bird sanctuary. Agua Hedionda Lagoon, at the mouth of Agua Hedionda Creek, is within the city of Carlsbad. The lagoon is routinely dredged to keep it open to the ocean. The lagoon serves as an integral part of a utility's power plant cooling water intake system and also provides a reserve cooling water supply. The easterly portion of the lagoon is used for water oriented recreation. Batiquitos Lagoon, at the mouth of San Marcos Creek, enters the Pacific Ocean between the city of Carlsbad and the unincorporated community of Leucadia. San Elijo Lagoon is the tidal marsh at the mouth of Escondido Creek. The marsh is normally closed off from the ocean but is subject to tidal fluctuations. The Carlsbad Hydrologic Unit is comprised of the following six hydrologic areas; the Loma Alta, Buena Vista Creek, Agua Hedionda, Encinas, San Marcos and Escondido Creek Hydrologic Areas. San Dieguito Hydrologic Unit (5.00) San Dieguito Hydrologic Unit is a rectangular-shaped area of about 350 square miles. It includes the San Dieguito River and its tributaries, along with Santa Ysabel and Santa Maria creeks. The unit contains two major reservoirs - Lake Hodges and Sutherland, and a smaller facility, the San Dieguito Reservoir. The unit contains one coastal lagoon, the San Dieguito Slough, located at the mouth of the San Dieguito River, which forms the northerly edge of the city of Del Mar. The lagoon is normally closed off from the ocean by a sandbar. The San Dieguito Hydrologic Unit is divided into five hydrologic areas; the Solana Beach, Hodges, San Pasqual, Santa Maria Valley and Santa Ysabel Hydrologic Areas. INTRODUCTION 1 - 8 September 8, 1994 Water Quality Standards Inventory Database Page 1 of 6 Water Quality Standards Inventory Database Click on the links below lo search for another waterbody. Search bv Bcnellcial Uses Seaivl^ bv Keyword Search bv SWRCB Region Search bv Callrans District Search bv Countv Click on thc links below to view water quality parameters for Agua Hedionda Creek. Ik-neficuil t.Si-> Water (Jiuiiliiv Obiv-ctivcs Waler Oiuiliiv Narr.tiivc Constituents Water Oualitv Numeric Criteria VVater Oualilv [jacteria Criteria Click on the links below to view comments and corrections logged or to navigate to thc commenls and corrections input page. Corriin^nls and CoiTecliuns I Oiicei-I Commenls and Corrections Inptti Page Gx/trans Agua Hedionda Creek Water Quality Control Board Region: Click on the region number for a list of waterbodies and reported hydrologic units in that region. 9 Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. Reported Hydrologic Units Published Hydrologic Units Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. 904.31 904.31 Caltrans Di.strict: Click on the Caltrans district for a list of waterbodies and reported hydrologic units in that district. il Counties: Click on the reported county name for a list of waterbodies and reported hydrologic units in that county. 'I'Isiise not^ lha! re|WteJ and published counlies arc ussnci.itod with hvdrolos^ie unit, nci '.vaierliodv Reported Counties Published Counties SAN DIEGO SAN DIEGO Location Map Watershed Map ^^^^1 ... ... >V^^;!^^^^| 1% Geospatial Waterbody System Assessment Data AGUA HEDIONDA LAGOON AGUA HEDIONDA CREEK (Includes 305(b) and 303(d} Determinations) Waterbody Beneficial Uses RWQCB Beneficial Use CUck on the beneficial use for the beneficial use code and description. Use Status Potential or Existing http ://endeavor.des .ucdavis. edu/wqsid/waterbody.asp?wb_fkey=3699 8/16/2002 Water Quality Standards Inventory Database Page 2 of 6 Industrial Service Supplv E.\istin<; Municipal and Domestic Supplv [Existing Water Contact Recreation Existing Non-Contact Water Recreation Existing Warm Freshwater Habitat Existing Wildlife Habitat Existing Water Qualit>' Objectives Waterbody Reach Beneficial Use Constituent Constituent Concentration Constituent Units Constituent Details Constituent Comments NA ALL Boion 0.75 me/L - NA .ML Chloride 250 mg/L - NA ALL Color 20 Units - NA ALL 1-1 mg/L - NA ALL hon 0.3 mg/L - NA ALL Manganese 0.05 ing.-'L - NA ALL M13AS 0.5 mg/L - NA ALL Sodium 60 mg/L - NA ALL Sulfate 2.S0 mg/L - NA ALL Tur])idity 20 NTU - Water Quality Narrative Constituents Constituent Name Constituent Description 13iostimulatory Substances Inland surface waters, bays and estuaries and coastal lagoon waters shall not contain biostimulatory substances in concenlrations that promote aquatic growth to the extent that such growths cause nuisance or adverselv affect beneficial uses. Color Waters shall be free of coloration that causes nuisance or adversely affects beneficial uses.The natural color of fish, .shellfish or other resources in inland surface waters, coastal lagoon or bay and estuarv' shall not be impaired. DO The dissolved oxygen conceiitTation in ocean waters shall not at any time be depressed more than 10 percent from that which occurs naturally, as thc result ofthe discharge of oxygen demanding wa.ste materials. 1-loating Material Waters shall not contain floating material, including solids, liquids, foams, and scum in concentrations which cause nuisance or adverselv affect beneficial uses. Oil and Grease Vv'aters shall not contain oils, greases, waxes, or other materials in concentrations which result in a visible film or coating on the surface ofthe water or on objects in the water, or which cause nuisance or vvhich oiheraise adversely affect beneficial uses. pH l he pH value shall not be changed at any time more than 0.2 pH units from that which occurs naturally.Changes in normal ambient pH levels shall not exceed 0.2 units in waters with designated marine (M.AR). or estuarine (EST), or saline (SAL) beneficial uses. Changes in normal ambient pH levels shall nol exceed 0.5 units in fresh waters with designated cold freshwater habitat (COLD) or warm freshwater habitat (WARM) beneficial uses. In bays and esUiaries the pH shall not be depressed belovv 7,0 nor raised above ^'.0. In inland surface waters the pH shall noi be depressed below 6.5 nor raised above 8.5. Radioactivity Radionuclides shall not be present in concentrations that are deleterious to human, plant, animal, or aquatic life nor that result in the accumulation of radionuclides in the food web to an extent that presents a hazard to human, plant, animal or aquatic life. http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_flcey=3699 8/16/2002 Waler Quality Standards Inventory Database Page 3 of 6 Sediment The suspended sediment load anti suspended sediment discharge rate of surface waters shall not bc altered in such a manner as to cause ntiisance or adversely affect beneticial uses. Suspended Solids Waters shall not contain suspended and settlable solids in concentrations of solids that cause nuisance or adversely affect beneficial uses. Toxicity ,'\li waters shall be maintained free of toxic substances in concenlrations that aie toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be detennined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional f3oard. The sui^ ival of aquatic life in surface waters subjected to a waste discharge or other controllable water quality faclors. shall not be less than that for the same water body in areas unaffected by the waste discharge or. when necessaiy, for other control water that is consistent with requirements specified in US EP.\. State Water Resources Control Board. .As a mininuim, compliance with this objective as staled in the previous sentence shall be evaluated with a 96-hour acute bioassay. In addition, eftluent limits based upon acute bioassays of effluents will be prescribed where appropriate, addifional numerical receiving vvater objectives for specific toxicants will be established as sufficient data become available, and source control of toxic substances w ill be encouraeed. Temperature The natural receiving water tempeiature of intrastate waters shall not be altered unless ii can be demonstrated to the satisfaction ofthe Regional Board that such alteration in temperature does not adversely affect beneficial uses. .M no time or place shall the temperature ofany COLD water be increased more thatt 5f ' above the natural receiving water temperature. Taste and (.)dor Waters shall not contain taste or odor producing substances at concentrations which cause a nuisance or adversely affect beneficial uses. The natural taste and odor offish, shellfish or other Regional waler resouices used for human consumplion Shall not be impaired in inland surface waters and bays and estuaries. Turbidity Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Numeric Criteria Beneficial Use .Numeric Constituent Name Numeric Constituent Detail Numeric Constituent Maxinium Numeric Constituent Units Numeric Constituent Com ments Numeric Constituent Reference AGR Boron 0.75 nig/L Quality Criteria for VVater, 1986 - Gold Book. MUN 1,1,1-Trichloroethane -0.2 mg/L T1TLE22 MUN 1,1,2,2-Tetrachloroethane -O.OOI mn/L TITLE22 MUN 1.1.2-Trichloroethane -0.005 mg/L TITLE22 MLIN 1,1-Dichloroethane -0.005 me/L T1TLE22 MUN l,l-[)ichloroeihylcne -0.006 m^/L T1TLE22 MUN 1.2.4-Trichlorobenzene -0.07 mg/L TITLE22 MUN l,2-Dibromo-3- chloropropane -0.0002 mg'L •nTI..E22 MUN 1.2-Dichlorobenzene -0.6 mg/L Tl'fLE22 MUN 1,2-Dichloroethane -0.0005 me/L T1TLE22 MUN 1,2-Dichloropropanc -0.005 mg/L TITLE22 MUN 1.3-Dicliloropropene -0.0005 mg/L TrrLE22 MUN 1,4-Dichlorobenzene -0.005 me/L T1TLE22 MUN 2,?.7.8-TCDD (Dioxin) -0.0000003 mg/1.. rfILE22 MUN 2.4.5-TP (Silvex) -0.05 mg/L T1TLE22 .MUN 2,4-D -0.07 mg/L T1TLE22 MUN .Alachlor -0.002 mg/L TrrLE22 MUN Aluminum -1 mg/L T1TLE22 http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3699 8/16/2002 Water Quality Standards Inventory Database Page 4 of 6 MUN ,-\iuimon\' -0.006 mg/L T11LF22 MUN .Arsenic -0.05 mg/L riTLE22 MUN .Asbestos -7 MFL .Million fibers per liter TITLE22 MUN .Atrazine -0.003 nvz'L riTLE22 MLIN Barium -1 niL'/L T1TLE22 MUN Bentazon -0.018 me/L T1TLE22 mm iienzene -0.001 m'i'l. TITLE22 MLiN Beiizo(ajpyi'ene -0.0002 mg/L T1TLE22 MUN Bervllium -0.004 me/L T1TLE22 MUN Cadmium -0.005 mg/L TITLE22 MUN Carbofuran -0.018 ing/L flTLE22 MUN Carbon Tetracliloride -0.0005 inc.'L T1TLE22 MUN Chlordane -0.0001 ma/L IITLE22 MUN Chromium -0.05 niii/L T1TLE22 MUN cis-1,2-Dichlorocihylcne -0.006 mg/L T1TLE22 .MUN Copper i.3 mg/L in>10"/o of tap vvater samples collected flTLE22. Pb&Cu Rule MUN C van ide -0.2 mg/L T1TLE22 .MUN Dalapon -0.2 me/L TITLE22 MUN D i( 2-clhy I he.xy l)ad ipate -0.4 mg/L TITLE22 MLIN Di(2-ethylhexyl)phthalate -0.004 mg/L T1TLE22 MUN Dichloromethane -0.005 mc./L T1TLE22 MUN Dinoseb -0.007 mg/L TITLE22 MLIN Diquat -0.02 mg/L T1TLE22 .MUN Endothall -0.1 mg/L TITLE22 MUN Endrin -0.002 mg/L TITLE22 MUN Ethylbenzene -0.7 mg/L T1TLE22 MUN Ethylene Dibromide -0.00005 mg/L T1TLE22 MUN Fluoride <53.7F 2.4 ma/L MLIN Fluoride 53.8F-58.3F 2.2 mg/L MUN Fluoride 58.4F-63.8F 2 me/L MUN Fluoride 63.9F-70.6F 1.8 me/1.. \UJN lluoride 70.7F-79.2F 1.6 mg/L MliN I'liioiidc 79.3F-90,5F 1.4 me/L VlUN Freon 1 13 -1.2 nis/L TIFLE22 MUN Glyphosate -0.7 me/L riTLE22 MUN Heptachlor -0,00001 me/L T1TLE22 MUN Heptachlor Epoxide -0.00001 mg/L riTLE22 MUN liexachlorobenzene -0.001 ma/L •nTLE22 MUN i lexachlorocyclopentadiene -0.05 ma./L TITLE22 Ml N Lead 0.015 mg/L in > 10% of tap water samples collecled T1TLE22. Pb&Cu Rule MUN Lindane -0.0002 me/L TITLE22 .MUN .MBAS -0.5 0 .MUN .Mercurv -0.002 mg,'L TITLE22 MUN Methoxychlor -0.04 mg/L T1TLE22 http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3699 8/16/2002 Water Quality Standards Inventory Database Page 5 of 6 MliN Mvilinale -0.02 mg/L rirLF22 MUN .Monochlorobenzene -0.07 mg/L TlfLE22 MUN Nickel -O.I mg/L T1TLE22 .MUN Nitrate (as N03) -45 me/L •firLE"'2 MUN Nitrate * Nitrite (sum as nitrogen) -10 mg/L TITLE22 MUN Nitrite (as nitrogen) -1 me/L TITLE22 MUN Oxamyl -0.2 mg/L TITLE22 MUN PCBs -0.0005 ing/L rriLE22 MUN Pentachlorophenol -0.001 mg/L T1TLE22 MUN Phenols -0.001 mg/L MUN Picloram -0.5 mg/L T1TLE22 MUN Selenium -0.05 mg/L T1TLE22 MUN Simazine -0.004 mg/L irFLE22 MUN Styrene -0.1 me/L rrrLE22 MUN Tetrachloroethylene -0.005 mg/L TITLE22 MUN Thallium -0.002 mg,'L TITLE22 MLIN 1 hiobciicarb -0.07 mg/L T1TLE22 MUN Toluene -0.15 mg/L T1TLE22 MUN •foxaphene -0.003 me/L rnLE22 MLIN trans-1,2-Dichloroethylene -0.01 mg/L T1TLE22 MUN Trichloroethylene -0.005 mg/L T1TLE22 MUN Trichlorofiuoromethane -0.15 me/L IITLE22 .MUN Vinyl Chloride -0.0005 mg/L-TITLE22 MUN Xylenes -1.75 mg/L T1TLE22 WAR.M Dissolved Oxygen --5 mg/L Water Quality Ammonia Criteria Beneficial Use Constituent Name Constituent pH Constituent Temperature Constituent Time Duration Constituent Concentration Constituent Units .AGR Ammonia as N ---0.025 me.'L IND Ammonia as N ---0.025 mg;'L MUN .Ammonia as N ---0.025 mg/L RFCI .Ammonia as N ---0.025 nia'L REC2 Ammonia as N ---0.025 mg/L WAR.M .Ammonia as N ---0.025 mg/L WILD .Ammonia as N ---0.025 mg/L Water Quality Bacteria Criteria Beneficial Use Constituent Name Constituent Concentration Details Consfiluent Concentration Constituent Units Constituent Comments Constituent Reference Ri::c 1 [•ceal c:olifbim Log Meaii-lO'i'oof Samples Ibr 30 day 400 Count per 100ml Log mean value. Based on more than 10 percent of total samples during any 30-day period. RECl Fecal Log Mean-5 200 Count per Log mean value. Based http;//endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3699 8/16/2002 Water Quality Standards Inventory Database Page 6 of 6 Coliform Samples Ibr 30 day 100 ml on a minimum of not less than five samples for any 30-day period. REC2 Fecal Coliform Average-10% of Samples tor 30 day 4000 Count per 100 ml Average value. Based on more than 10 percent of total samples during any 30-day period. REC2 Fecal Colifonn Average-lbr 30 day 2000 Count per 100 ml .Average value. Based on samples for a 30-day period. Comments Comments Click above to go to the Coniments input page. *No Comments Available * P ©^Information Center for the Environment * * info(w,ice. ucdavis.edu \ Search | Notices | http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3699 8/16/2002 Water Quality Standards Inventory Database Page 1 of 2 Water Quality Standards Inventory Database Click on the links below to search for another waterbody. Searcli by BcfK^lcial Uses V»:vhhv kvvv\Oi,i Searchjiv SW KC:B Region Search hv Callr.'ins District Search bv Counlv Click on the links below to view water quality parameters for Agua Hedionda Creekv. h.;i!cliekill. -.^s \\alot 'jUv'iiij iJavCiivv" W;iier '.Hiiihi'- Nansiiive C oiis.miionis W ater Uualih Numeric Criteria WiiK-r tjualilv Bacleria Crileria Click on thc links below to view comments and corrections logged or to navigate to the comments and corrections input page. riJIrirT)en*SJUkK ^JFTvCIU'lls ! OgL!.:J Coinments and Correclions Input I'age Qx/trans Agua Hedionda Creekv W'ater Quality Control Board Region: Click on the region number for a list of waterbodies and reported hydrologic units in that region. 9 Hydrologic Units: Click on the reported hydrologic unil for a list of waterbodies in that unit. Reported Hvdroloeic Units Published 1K drologic Units Hydrologic Units: Click on the reported hydrologic unil for a list of waterbodies in that unit. 904.31 904.31 Caltrans District: Click on the Caltrans districi for a list of waterbodies and reported hydrologic unils in that dislrict. 11 Counties: Click on the reported county name for a list of waterbodies and reported hydrologic units in that county. MMiMse noK- iha: r. p('!Us.i and puhit.^heJ couniK's art- iissiiciai^'d with hvdiiilo^MV unil, nt>l v.aleihi 'd> Reported Counties Published Counties SAN DIEGO SAN DIEGO Location Map Watershed Map \ ............ \ Waterbody Beneficial Uses RW QCB Beneficial Use Click on the beneficial use for the beneficial use code and description. Use Status Potential or Existing ''No Beacficial Uses Reporled in Database http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3700 8/16/2002 Water Quality Standards Inventory Database Water Quality Objectives Page 2 of2 Waterbody Beneficia! Constituent Constituent Constituent Constituent Constituent Reach Use Constituent Concentration Linits Details Comnients NA ALL fDS 500 mg/L - Wa te r Quality Nanative Constituents Constituent Name Constituent Description "No Narrative Criteria Available Water Quality Numeric Criteria Beneficial Use Numeric Con.stitucut Name Numeric Constituent Detail Numeric Constituent Maximum Numeric Constituent Units Numeric Constituent Comments Numeric Constituent Reference *No Numeric Cnteria Available Water Quality Ammonia Criteria Beneficial Use Constituent Name Constituent pH Constituent Temperature Constituent Time Duration Constituent Concentration Constituent Units No NH3 Criteria Available Water Quality Bacteria Criteria Beneficial Use Constituent Name Constituent Concentration Details Constituent Concentration Constituent Units Constituent Comments Constituent Reference '•No Bacteria Criteria Available Comments Comments Click above to go to the Comments input page. •No Comments Available © Tnformation Center for the Environment ^ 0 info(a'Jce.ucdavis.edu I Search I Notices I WQSID Home http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fk;ey=3700 8/16/2002 Water Quality Standards Inventory Database Page 1 of 6 Water Quality Standards Inventory Database Click on the links below to search for another waterbody. Search by Benel'icial Uses Search b\ Kevwiird Search bv SWRCB Region Search bxCallrans Districi Search by Counlv Click on thc links below to view water quality parameters for Letterbox Canyon. Beneficial Use^ Waler Oualilv Obiectis e.s Water Oualilv Niirralive Consiiluenis Waler Oualilv .^umcru (.'riieria W aioi Oualii^ Bucioria t. rue; la Click on thc links below to view comments and corrections logged or to navigate lo the comments and corrections inpul page, Conunents und Correclioii> l.iimed Comnients and C'oiTcctions Inpul Pape Ca/trans Letterbox Canyon W ater Quality Control Board Region: Click on the region number for a list of waterbodies and reported hydrologic units in that region. 9 Hydrologic Units: Click on the reported hydrologic unil for a list of waterbodies in lhal unit. Reported Hydtologic Units Published Hydrologic Units Hydrologic Units: Click on the reported hydrologic unil for a list of waterbodies in lhal unit. 904.31 904.31 Caltrans District: Click on the Callrans district for a lisl of waterbodies and reported hydrologic units in lhat dislrict. 11 Counties: Click on the reported county name for a list of waterbodies and reporled hydrologic unils in that county. 'i'leijse note lha! reported anvi published counties are associated with hydrologic unil, nol '.vaserl'HH'K RepoHed Counties Published Counties SAN DIEGO SAN DIEGO Location Map Watershed Map Geospatial Waterbody System Assessment Data LETTERBOX CANYON (Includes 305(b) and 303(d) Determinations) Waterbody Beneficial Uses RWQCB Beneficial Use Click on the beneficial use for the beneficial use code and descripiion. Use .Status Potential or Existing http ://endeavor.des .ucdavis .edu/wqsid/waterbody. asp?wb_fkey=3 702 8/16/2002 Water Quality Standards Inventory Database Page 2 of6 •Aaricultuial Supplv Existing Industrial Service Supply Existing Municipal and Domestic Supplv -Existing Waler Contacl Recreation Exisling Non-Contact V/ater Recreation Exisling Warm Freshwater Habitat Existing Wildlife Habitat Existing Water Quality Objectives Waterbody Reach Beneficial Use Consfituenl Constituent Concentration Constituent Units Constituent Details Constituent Comments *No WQOs Available Water Quality Narrative Constituents Constituent Name Constituent Description Biosiimulatoiy Subslances Inland surface waters, bays and estuaries and coastal lagoon waters .shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses. Color Wateis shall be free of coloration that causes nuisance or adversely atTects beneficial uses.The natural color of fish, shellfish or other resources in inland surface waters, coastal lagoon or bay and esluaiy shall not be impaired. DO The dissolved oxygen concentration in ocean waters shall not at any time be depressed more than 10 percent from that which occurs naturally, as thc result oflhe di.scharge of oxygen demanding waste materials. Floating Material Waters shall not contain fioating material, including solids, liquids, loams, and scum in concentrations which cause nuisance or adverselv affecl beneficial uses. Oil and Grease Waters shall not contain oils, greases, waxes, or other materials in concentrations which result in a visible film or coafing on the surface ofthe water or on objects in the water, or which cause nuisance or which otherwise adverselv affect beneficial uses. pH nie pH value shall not be changed at any time more lhan 0.2 pFl unils from that which occurs naturally .Changes in nonnal ambient pll levels shall not exceed 0.2 units in waters with designated marine (M.AR). or estuarine (EST), or saline (SAL) beneficial uses. Changes in normal ambient pH levels shall not exceed 0.5 units in fresh waters with designated cold freshwater habitat (COLD) or warm freshwater habitat (W.ARM) beneficial uses, hi bays and estuaries thc pl 1 shall not be depressed below 7.0 nor raised above 9,0. In inland surface vvaters the pH shall not be depressed below 6.5 nor raised above 8.5. Radioactivity Radionuclides shall not be present in concentrations that are deleterious to human, plant, animal, or aquatic life nor that result in the accumulation of radionuclides in the food web to an extent that presents a hazard to human, plant, animal or aquatic life. Sediment The suspended sediment load and suspended sediment discharge rate of surface waters shall nol be altered in such a manner as to cause nuisance or adversely atTect beneficial uses. Suspended Solids Waters shall not conlain suspended and settlable solids in concentrations of solids that cause nuisance or adverselv affect beneficial uses. Foxicity .All waters shall be maintained free of toxic substances in concentrations lhat are toxic lo. or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duraiion, or olher appropriate methods as specified by the Regional Board. The survival of aquatic life in surface waters subjected to a waste http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3702 8/16/2002 Water Quality Standards Inventory Database Page 3 of 6 discharge or other controllable water quality tactors. shall not be less lhan that for the same water body in areas unaffected by the waste discharge or. when necessary, for other control water that is consislent with requirements specified in LIS EP.A. State Water Resources Control Board. .As a mininuim, compliance with this objective as staled in the previous sentence shall be evaluated with a 96-hour acute bioassay. In" addition, effiuent limils based upon acute bioassays of ef^Ouents wili be prescribed where appropriate, additional numerical receiving water objectives tbr specific toxicants w ill bc established as sufficient daia become available, and souice control of toxic substances will be encouraeed. Temperatuie The natural receiving water temperature of intrastate waters shall not bc altered unless it can be demonstrated to the satisfaction ofthe Regional Board that such alteration in temperature does not adversely affect beneficial uses. At no lime or place shall the temperature ofany COLD water be increased more than 5I-" above the natural receiving water temperature. l aste and Odor Waters shall not contain taste or odor producing substances at concentrations vvhich cause a nuisance or adversely affect beneficial uses. The natural taste and odor of fish, shellfish or other Regional water resources u.sed for human consumption Shall not be impaired in inland surface waters and bays and estuaries. Turbiditv Waters shall be fi'ee of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Numeric Criteria Beneficial Use .Numeric Constituent Name Numeric Constituent Detail Numeric Constituent Maxim um Numeric Constituent Units Numeric Constituent Comments Numeric Constituent Reference AGR Boron 0.75 mg/L Qualitv Criteria for Water, 1986 - Gold Book. MUN 1,1,1-1 rich loroethane -0.2 mg/L •riTLE22 MUN 1,1,2.2-Tetrachloroethane -0.001 me/L TITLE22 MUN 1,1.2-Trichloroelhane -0.005 mg/L TITLE22 MUN 1,1-Dichloroethane -0.005 me/L T1TLE22 MUN 1,1-Dichloroethylene -0,006 mg/L TITLE22 MUN 1.2.4-Trichlorobenzene -0.07 mg/L TITLE22 .MUN l,.2-Dibromo-3- chloropropane -0.0002 me/L •flfLE22 MUN 1.2-Dich lorobenzene -0.6 mg/L T1TLE22 MUN 1,2-Dichloroethane -0.0005 me/L T1TLE22 MUN 1,2-Dichloropropanc -0.005 mg/L rirLE22 MUN 1,3-Dichloropropene -0.0005 mg/L •fl'fLE22 MUN 1,4-Dichlorobenzene -0.005 me/L TITLE22 MUN 2,3.7.8- FCDD (Dioxin) -0.0000003 mg/L TnLE22 MLIN 2.4.5-TP (Silvex) -0.05 mg/L rFl'LE22 MUN 2,4-D -0.07 me/L T1TLE22 ,MLiN .Alachlor -0.002 mg/L ITfLE22 MUN Aluminum -1 mg/L •F1TLE22 MUN .Antimony -0.006 mg/L TITLE22 MUN .Arsenic -0.05 me/L TirLE22 .MUN Asbestos -7 MFL Million fibers per liter •rFfLE22 MUN .Atrazine -0.003 mg/L TITLE22 MUN Barium -1 me/L TnLE22 MUN Benlazon -0.018 mg/L TITLE22 MUN Benzene -0.001 mg/L TITLE22 http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3702 8/16/2002 Water Quality Standards Inventory Database Page 4 of 6 MUN Benzo(a)pyrene -0,0002 ing/L fl fLF22 ML'N Boiy Ilium -0.004 mg/L. TlfLH22 MUN Cadmium -0.005 mg/L nTLE22 .MUN Carbofuran -0.018 me 1. l'lfLE22 MUN Carbon Tetrachloride -0.0005 mg/L "IlfI.E22 MUN Chlordane -0.0001 mg/L T1TLE22 MUN Chromium -0.05 mg/L T1TLE22 MUN cis-1,2-Dichloroethylene -0,006 mg/L TII"LE22 MUN Copper 1.3 mg/L in>IO';'o of tap vvater samples collected 'rnLE22, Pb&Cu Rule ,MUN Cyanide -0.2 mg'L T1TLE22 MUN Dalapon -0.2 mg/L, TITLE22 MUN Dit 2-ethy Ihe.xy l)adipaie -0.4 mg/L T1TLE22 .MUN Di(2-ethy Ihexy 1 )phthalate -0.004 mg/L •IlfLE22 MUN Dichloromethane -0.005 mg/1. TirLE22 ,MUN Dinoseb -0.007 mg/L TITLE22 MUN Diquat -0.02 mg/L flTLE22 MUN Endothall -O.I mg/1. rrfLE22 MUN Endrin -0.002 mg/L TnLE22 MUN Ethylbenzene -0.7 mg/L riTLE22 MUN FIthylene Dibromide -0.00005 mg/L 1ITLE22 MUN Fluoride -•:53.7F 2.4 mg/L MUN Fluoride 53.8F-58.3F 2.2 mg/L MUN Fluoride 58.4F-63.8F 2 mg/L. MUN Fluoride 63.9F-70.6F 1.8 mg/L .MLIN Fluoride 70.7F-79.2F 1.6 mg/L MUN Fluoride 79.3F-90.5F 1.4 mg/L, .MUN Freon 113 -1.2 mg/L T1'1'LE22 MUN Glyphosate -0.7 ing/L TlfLE22 MUN Heptachlor -0,00001 me/L T1TLE22 MUN Heptachlor Epoxide -0.00001 mg/L T1TLE22 MUN Hexachlorobenzene -0.001 mg/L T1TLE22 MUN H c ,\ a c h 10 rocy c 1 ope n t a d i en e -0.05 mg/L TITLE22 MUN Lead 0.015 mg/L in>IO';'o of tap water samples collecled riTLE22, Pb&Cu Rule MUN Fintlane -0.0002 me/L T1FLE22 MUN .MBAS -0.5 0 MUN Mercury -0.002 mg/L T1TLE22 .MUN Methoxychlor -0.04 ing/L rrrLE22 MUN Molinate -0.02 mg/L TITLE22 MUN Monochlorobenzene -0.07 mg/L T1TLE22 MLIN Nickel -0.1 mg/L TF1LE22 MUN Nitrate (as N03) -45 mg/L TITLE22 MUN Nitrate + Nitrile (sum as nitrogen) -10 mg/L TITLE22 MUN .Nitrite (as nitrogen) -1 mg/L rifLE22 MUN Oxamyl -0.2 mg/L TITLE22 http;//endeavor.des.ucdavis.edii/wqsid/waterbody.asp?wb_fkey=3702 8/16/2002 Water Quality Standards Inventory Database Page 5 of 6 Ml. \ PCBs -0.0005 meL Tl l Li:22 MUN Pentachlorophenol -0,001 nig/L TITI.E22 MUN Phenols -0.001 mg/L .MUN Picloram -0.5 me/L 'riTLE22 MUN Selenium -0.05 mg/L TITLE22 MUN Simazine -0.004 mg/L T1TLE22 MLIN Stvrene -0,1 me/L T1TLE22 MUN Tetrachloroethylene -0.005 mg/L T1T1,E22 MUN Thallium -0.002 mg/L T1TLE22 MLIN •] hiobencai-b -0.07 mg/L T1TLE22 MUN Toluene -0.15 mg/L TITLE22 MUN foxaphene -0.003 mg/L T1TLE22 MUN irans-l,2-Dichloroethylene -0.01 me/L 'nrLE22 MUN Trichloroethvlene -0.005 mg/L. TITLE22 MUN frichlorofiuoromethane -0.15 mg/L T1TLE22 MUN Vinyl Chloride -0.0005 mg/L T1TLE22 MUN Xvlenes -1.75 mg/L TITLE22 WARM Dissolved Oxygen --5 mg/L Water Quality Ammonia Criteria Beneficial Use Constituent Name Constituent pH Constituent Temperature Constituent Time Duration Constituent Concentration Constituent Units AGR Ammonia as N ---0.025 mg/L IND Ammonia as N ---0.025 mg/L MUN .Ammonia as N ---0.025 mg/1. REC 1 Ammonia as N ---0.025 mg/L RFC2 .Ammonia as N ---0.025 mg/L WARM •Ammonia as N ---0.025 mg/L WILD Ammonia as N ---0.025 mg/L. Water Quality Bacteria Criteria Beneficial Use Constituent .Name Constituent Concentiatiou Details Constituent Concentration Constituent Units Constituent Comments Con.stitucnt Reference RFC 1 Fecal Coliiorni Log Mean-10% of Samples for 30 day 400 Count per 100 ml Log mean value. Based on more than 10 percent of total samples during any 30-day period. RECl Fecal Colifonn Log Mean-5 Samples Ibr 30 day 200 Count per 100ml Log mean value. Based on a minimum of not less than five samples for any 30-day period. RFC2 Fecal Coliform Average-lO^-i) of Samples for 30 day 4000 Count per 100 ml .Average value. Based on more than 10 percent of lotal samples during any 30-day period. REC2 Fecal Coliform Average-for 30 day 2000 Count per 100ml .Average value. Based on samples for a 30-day http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3702 8/16/2002 Water Quality Standards Inventory Database Page 6 of 6 [period. Comments Comments Click above to go to the Comments input page. *No Comments Available 4 f © Information Center for the Environment * * i^f(jfaiice. ucdavis. edu \ Search | Notices ' WQSID Home '^r^ http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3702 8/16/2002 Water Quality Standards Inventory Database Page 1 of 8 Water Quality Standards Inventory Database Click on the links below to search for another waterbody. Seareli by Benerieial l^ses Searvii bv keNv.vii'"d Search bv SWRCB Region Search bv Callrans Districi Search bv Counlv Click on the links below lo view water quality parameters for Aqua Hedionda Lagoon. Benehcia! I i>es Water Oualilv Obieeiive'i W aior '."'mlitv Narrair.e Conslituenls W aler Qualitv Nuiiierie Critena 'vVaU-r Oualilv tiacK-na Cniena Click on lhe links below lo view comments and corrections logged or lo navigate to thc comments and corrections input page. Comnients and CoiTevtiiir;^ I oeaeu Commenls .md Corrections Input Paae Qx/trans Aqua Hedionda Lagoon Water Quality Control Board Region: Click on the region number for a lisl of waterbodies and reported hydrologic units in that region. 9 Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. Reported Hvdrolouic Units Publi.shed Hydrologic Units Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. 904.31 904,31 Caltrans District: Click on the Caltrans dislrict for a list of waterbodies and reported hydrologic units in lhal dislrict. 11 Counties: Click on the reporled counly name for a list of waterbodies and reported hydrologic unils in lhal county. 'i'leiisc note ihat lepc^ried and published couniies are associated with hydnilogic unit, nol v.aierhody Reported Counties Published Counties SAN DIEGO SAN DIEGO Location Map Watershed Map Waterbody Beneficial Uses RWQCB Beneficial Use Click on the beneficial use for the beneficial use code and descripiion. Use Status Potential or Existing Aquaculture Existing Cold Freshwater Habitat Exisling Commercial and Sport Fishing Existing http ://endea vor. des .ucdavis. edu/wqsid/waterbody. asp?wb_fkey=3701 8/16/2002 Water Quality Standards Inventory Database Page 2 of 8 Estuarine Habitat Existing Industrial Service Supply Existing Marine Habilal Existing Misration of Aquatic Oreanisms Existing Rare. Threatened or Endangered Species Exisling Water Conlact Recreation Existing Non-Contact Waler Recreation Existing Shellfish Harvesfine Exisling Wildlife Habitat Exisling Water Quality Objectives Waterbody Reach Beneficial Use Constituent Constituent Concentration Constituent Units Constituent Details Constituent Comments ^No WQOs Available Water Quality Narrative Constituents Constituent Name Constituent Description Biostimulatory Substances Inland surface waters, bays and estuaries and coastal lagoon waters shall not contain biostimulatoiy substances in concentrations that promote aquatic growth to the extent lhat such growths cause nuisance or adversely affecl beneficial uses. Color Waters shall be free of coloration that causes nuisance or adversely affects beneficial uses.The natural color of tish, shellfish or other resources in inland surface waters, coastal lagoon or bay and estuary shall not be impaiied. DO Fhe dissolved oxygen concentration in ocean waters shall not at any time be depressed more than 10 percent from that vvhich occurs naturally, as the result of the discharge of oxygen demanding waste materials. Floating Material Waters shall not conlain fioating material, including solids, liquids, foams, and scum in concentrations which cause nuisance or adverselv affect beneficia! uses. Oil and (iivasc Waters shall not contain oils, greases, waxes, or other materials in concentrations which result in a visible film or coating on tho surface ofthe water or on objects in the water, or which cause nuisance or which otherwise adverselv aftect beneficial uses. pll The pH value shall not be changed at any time more than 0.2 pH units from that which occurs naturally.Changes in normal ambient pH levels shall not exceed 0.2 units in waters with designated marine (MAR), or estuarine (EST), or saline (SAL) beneficial uses. Changes in normal ambient pH levels shall not exceed 0.5 units in fresh waters with designaied cold freshwater habitat (COLD) or warm freshwater habitat (WARM) beneficial uses. In bays and estuaries the pH shall not be depressed below 7.0 nor raised above 9.0. In inland surface waters the pH shall not be depressed below 6.5 nor raised above 8.5. Radio'dctivily Radionuclides shall not be present in concentrations that are deleterious to human, plant, animal, or aquatic life nor that result in the accumulation of radionuclides in the food web lo an extent that preseiiis a hazard to human, plant, animal or aquatic life. Sediment The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses. Suspended Solids Waters shall not contain suspended and settlable solids in concentrafions of solids that cause nuisance or adverselv affect beneficial uses. Toxicity All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3701 8/16/2002 Water Quality Standards Inventory Database Page 3 of 8 this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriale methods as specified by the Regional Board, fhe survival of aquatic life in surface waters subjected to a waste discharge or other controllable water qualily faclors. shall not be less than that for thc same vvater body in areas unaffected by the waste discliarge or. when necessary , for other control water that is consistent with requirements specified in US 1/PA, Stato Water Resources Control Board. As a minimum, compliance w ith this objociivc as staled in lhe previous sentence shall be evaluated with a 96-hour acute bioassay. In addition, einuent limits based upon acute bioassays of effluents will be prescribed where appropriate, additional numerical receiving water objectives tbr specific toxicants will be established as sufficient d.ita become available, and source control of toxic substances will be encouraged. femperature The natural receiving water temperature of intrastate waters shall not be altered unless il can be demonstrated to the satisfaction oflhe Regional Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature ofany COLD waler be increased more than 5F above the natural receiving vvater temperature. Taste and Odor Wateis shall not contain taste or odor producing substances at concenlrations which cause a nuisance or adversely affect beneficial uses. Tho natural taste and odor of fish, shellfish or other Regional water resources used for human consumption Shall not be impaired in inland surface waters and bays and estuaries. Turbiditv Waters shall be free of changes in turbidity that cause nuisance or adversely affecl beneficial uses. Water Quality Numeric Criteria Beneficial Use Numeric Constituent .Name Numeric Constituent Delail Numeric Constituent Maximum Numeric Constituent Units Numeric Constituent Commenls Numeric Constituent Reference MAR i. 1.1 - rrichloroetliane 30-da> .Average 540 mg/L Ocean Plan MAR 1.1,2,2-Tetrachloroelhane 30-day .Average 1.2 mg./L, Ocean Plan MAR 1.1.2-Trichloroethane 30-day .Average 43 mg./L Ocean Plan MAR 1,1 -Dich loroethy lene 30-day Averaee 7.1 mg.'L Ocean Plan MAR 1,2-Dichloroethane 30-day Average 0.13 mg/L Ocean Plan MAR 1.2 - Ll i p h e 11 y 1 h y d raz i n e 30-day Average 0.00016 mg/L Ocean Plan MAR 1,3-Dichloiopropene 30-day .Average 0.0089 mg/L Ocean Plan MAR 1,4-Dichlorobenzene 30-day .Average 0.018 mg/L Ocean Plan MAR 2,4,6-Trichlorophenol 30-day Average 0.00029 mg/L Ocean Plan MAR 2,4-Dinitrophenol 30-day Average 0,004 mg/L Ocean Plan MAR 2.4-Diniiroioluene 30-da\ Average 0.0026 mg/L Ocean Plan MAR 3.3 - D i c h 10 r 0 be n z i d i n e 30-day .Average 0.0000081 mg/L Ocean Plan MAR 4.6-Dinitro-2-Methylphenol 30-day .Average 0.22 mg/L Ocean Plan MAR .Acrolein 30-day .Averaee 0.22 mg/L Ocean Plan MAR .Acrylonitrile 30-day 0.0001 mg/L Ocean Plan http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fk:ey=370I 8/16/2002 Water Quality Standards Inventory Database Page 4 of 8 .Averaee MAR Aldrin 30-day .Average 0.000000022 mg/L. Ocean Plan .MAR ,\ nti mony 30-day .Average 1.2 mg/L Ocean Plan MAR Arsenic 6 Month .Median 0.008 mg/L Ocean Plan MAR .Arsenic Background sea water concentration 0.003 mg/L Ocean Plan MAR Arsenic Daily .Maximum 0.032 mg/L Ocean Plan MAR Aricnic Instantaneous Maximum 0.08 mg/L Ocean Plan •MAR Benzene 30-day .Averaee 0.0059 me/L Ocean Plan MAR Benzidine 30-day Average 0.000000069 mg/L Ocean Plan MAR Beryllium 30-day .Average 0.000033 mg/L Ocean Plan .MAR Bis{2-chloroetho,Ky) methane 30-day .Average 0.0044 mg/L Ocean Plan MAR Bis(2-chloroethy 1) ether 30-day .Average 0.000045 mg/L Ocean Plan MAR Bis(2-chloroisopropyl) ether 30-day Averaee 1.2 mg/L Ocean Plan MAR Bis(2-ethylhexyl) phthalate 30-day Average 0.0035 mg/L Ocean Plan MAR Cadmium 6 Month Median 0.001 mg/L Ocean Plan MAR Cadmium Daily .Alaxim um 0.004 mg/L Ocean Plan MAR Cadmium Instantaneous .Maximum 0.01 mg/L Ocean Plan MAR Carbon Tetrachloride 30-day Averaee 0.0009 mg/L Ocean Plan MAR Chlordane 30-day Average 0.000000023 mg/L Ocean Plan MAR Chlorinated Phenolics 6 Month Median 0.001 mg/L Ocean Plan MAR Ch lorinated Phenolics Daily .Maximum 0.004 mg/L Ocean Plan MAR Chlorinated Phenolics Instantaneous Maximum 0.01 mg/L Ocean Plan MAR Chlorobenzene 30-day .Averaee 0.57 mg/L Ocean Plan MAR Chl oro fonn 30-day Averaee 0.13 mg/L Ocean Plan MAR Chromium 30-day Average 190 mg/L Ocean Plan MAR Chromium VI 6 Month Median 0.002 mg/L Ocean Plan MAR Chromium VI Daily Maximuin 0.008 mg/L Ocean Plan http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3701 8/16/2002 Water Quality Standards Inventory Database Pages of 8 MAR Chromium VI Instantaneous .Maximum 0.02 mg/L Ocean Plan MAR Chronic Toxicity Daily Maximum 0.001 TUc Ocean Plan MAR Coppci' 6 Month Median 0.003 mg/L Ocean Plan MAR Copper Background sea water concentration 0,002 mg/L Ocean Plan .MAR Copper Daily Maximum 0.012 mg'L Ocean Plan MAR Copper Instantaneous Maximum 0.03 mg/L Ocean Plan MAR Cyanide 6 Month Median O.OOI mg/L Ocean Plan MAR Cyanide Daily .Maximum 0.004 mg/L Ocean Plan .MAR Cyanide Insianlaneous Maximum 0.0! mg/L Ocean Plan MAR DDT 30-day .A verage 0.00000017 mg/L Ocean Plan MAR Di-n-butyl phthalate 30-day Averaee 3.5 mg/L Ocean Plan MAR Dichlorobenzenes 30-day Average 5.1 mg/L Ocean Plan .MAR Dichloromethane 30-day .Average 0.45 mg/L Ocean Plan MAR Dieldrin 30-day .Average 0.00000004 mg/L Ocean Plan MAR Diethyl phthalate 30-day -Averaee 33 mg/L Ocean Plan MAR Dimethyl phthalate 30-day Average 820 mg/L Ocean Plan MAR Dissolved Oxygen --5 mg/L MAR Endosulfan 6 Month Median 0.000009 mg/L Ocean Plan MAR Endosulfan Daily Maximum 0.000018 mg/L, Ocean Plan MAR Endosulfan Instantaneous Maximum 0.000027 mg/L Ocean Plan .MAR Endrin 6 Month Median 0.000002 mg/L Ocean Plan MAR Fndrin Daily Maximum 0.000004 mg/L Ocean Plan MAR Endrin Instantaneous .Maximum 0.000006 mg/L Ocean Plan MAR Ethylbenzene 30-day Averaee 4.1 mg/L Ocean Plan MAR Fluoranthene 30-day Average 0.015 mg/L Ocean Plan MAR Halomethanes 30-day Average 0.13 mg/L Ocean Plan MAR HCH 6 Month .Median 0.000004 mg/'L Ocean Plan http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3701 8/16/2002 Water Quality Standards Inventory Database Page 6 of 8 .MAR HCH Daily Maximuin 0.000008 mg./L Ocean Plan MAR HCH Insianlaneous Maximum 0.000012 nig./L Ocean Plan MAR Heptachlor 30-day .Averaee 0.00000072 mg/L Ocean Plan MAR Hexachlorobenzene 30-day Average 0.00000021 mg/L Ocean Plan MAR Hexachlorobutadiene 30-day Average 0.014 mg/L Ocean Plan .MAR Hexachlorocyclopentadiene 30-day .Average 0.058 mg/L Ocean Plan .MAR Hexachloroethane 30-day ,A veraee 0.0025 mg/L Ocean Plan MAR Isophorone 30-day .Averaee 150 mg/L Ocean Plan MAR Lead 6 Month Median 0.002 mg/L Ocean Plan MAR Lead Daily Maximum 0.008 mg/L Ocean Plan MAR Lead Instantaneous .Maximum 0.02 mg,/L Ocean Plan .MAR Mercury 6 Month .Median 0.00004 mg,/L Ocean Plan ,MAR Mercuiy Backgiound sea water concentration 0.0000005 mg/L Ocean Plan MAR Mercury Daily Maximum 0.00016 mg,/L Ocean Plan MAR Mercury Instantaneous Maximum 0.0004 mg/L Ocean Plan MAR N-nitrosodimelhylamine 30-day .Average 0.0073 mg/L Ocean Plan MAR N-nitrosodiphenylamine 30-day Average 0.0025 mg/L Ocean Plan MAR Nickel 6 Month Median 0.005 mg/L Ocean Plan MAR Nickel Daily Maximum 0.02 mg/L Ocean Plan MAR Nickel Instantaneous .Maximum 0.05 mg/L Ocean Plan ,MAR Nitrobenzene 30-day •Averaee 0.0049 rne./L Ocean Plan MAR PAHs 30-day Average 0.0000088 mg/L Ocean Plan MAR PCBs 30-day .Average 0.000000019 mg/L Ocean Plan MAR Phenolic Compounds (non- chlorinated) 6 Month .Median 0.03 mg/L Ocean Plan MAR Phenolic Compounds (non- chlorinated) Daily Maximuni 0.12 mg,/L Ocean Plan .MAR Phenolic Compounds (non- chlorinated) Instantaneous Maximum 0.3 me/L Ocean Plan MAR Silver 6 Month 0.007 mg/L Ocean Plan http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=370I 8/16/2002 Water Quality Standards Inventory Database Page 7 of 8 Median MAR Silver Background sea waler concentration 0.00016 mg/L Ocean Plan MAR Silver Daily Maximum 0.0028 mg/L Ocean Plan MAR Silver Instantaneous Maximum 0.0007 mg/L Ocean Plan MAR TCDD equivalents 30-day Average 0.0000000000039 mg/L Ocean Plan MAR Tetrach 1 oroelhy lene 30-day .Average 0.099 mg/L Ocean Plan MAR Thallium 30-da\ ,A veraee 0.014 mg/L Ocean Plan MAR 1 oluene 30-day .A verage 85 me/L Ocean Plan MAR Total Chlorine Residual 6 Month Median 0.002 mg/L Ocean Plan MAR Total Chlorine Residual Daily Vlaxinuim 0.008 mg/L Ocean Plan MAR Total Chlorine Residual Instantaneous .Maximum 0.06 mg/L Ocean Plan MAR loxaphene 30-day .Average 0.00000021 mg/L Ocean Plan MAR 1 ributyltin 30-day .Averaee 0.0000014 mg/L Ocean Plan MAR Trichloroethylene 30-day Average 0.027 mg./L Ocean Plan MAR Vinyl Chloride 30-day Average 0.036 mg/L Ocean Plan MAR Zinc 6 Month .Median 0.02 mg/L Ocean Plan ,MAR Zinc Background soa water ciHicenlialion 0.008 mg/L Ocean Plan .MAR Zinc Daily •Maxim um 0.08 mg/L Ocean Plan .MAR Zinc Instantaneous .Maximum 0.2 mg/L Ocean Plan Water Quality' Ammonia Criteria Beneficial Use Constituent Name Constituent pH Constituent Temperature Constituent Time Duration Constituent Concentrafion Constituent Unils COLD .Ammonia as N ---0.025 me/L IND Ammonia as N ---0.025 me/L MAR Ammonia as N ---0.6 mg/L MAR Ammonia as N ---2.4 me/L MAR Ammonia as N ---6 mg/L RARE Ammonia as N ---0.025 mg/L RECI .Ammonia as N ---0.025 me/L REC2 Ammonia as N ---0.025 mg/L http://endeavor.des.ucdavis.edu/wqsidywaterbody.asp?wb_fkey=370I 8/16/2002 Water Quality Standards Inventory Database Page 8 of 8 [WILD [Ammonia as N|-0.025 Water Quality Bacteria Criteria Beneficial Use Constituent Name Constituent Concentration Details Constituent C~oncentration Constituent Units Constituent Comments Constituent tieferencc RECI Fecal Coliform Log Mean-10% of Samples for 30 day 400 Count per 100 ml Log mean valuo. Based on more than 10 percenl of total samples during any 30-day period. RECI Fecal Coliform Log Mean-5 Samples for 30 day 200 Count per 100ml Log mean value. Based on a minimum of not less than five samples for any 30-day period. REC2 Fecal Colifonn Average-lO'/o of Samples for 30 day 4000 Count per 100 ml Average value. Based on more than 10 percent of total samples during any 30-day period. RFC2 Fecal Colifonn Average-for 30 day 2000 Count per 100 ml .Average value. Based on samples for a 30-day period. SHELL Total Coliform Median-3 tube test, 10% of Samples for 30 day 330 Count per 100 ml Median value. Based on more lhan 10 percent oflhe samples collected during any 30-day period for a three-tube decimal dilution test. SHELL Total Coliform Median-5 lube test. 10% of Samples Ibr 30 day 230 Count per 100 ml Median value. Based on more than 10 pei cent of the samples collected during any 30-day period for a five-tube decimal dilution test. SHELL Total Coliform Median-for 30 day 70 Count per 100 ml Median Value. Based on 30-day period. Comments Comments Click above lo go lo the Comments input page. *No Comnients Available ^0^0^ © Information Center for the Environment 0 0 info@ice.ucdavis.edu \ Search | Notices | http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3701 8/16/2002 ATTACHMENT «E" GRADING PLAN/EROSION CONTROL PLAN