CCLME.ORG - DIVISION 4. REGIONAL WATER QUALITY CONTROL BOARDS

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s 3930. Revised Water Quality Control Plan for the Los Angeles Region.
The revised Water Quality Control plan (Basin Plan) for the Los Angeles Region, as adopted June 13, 1994, by the Los Angeles Regional Water Quality Control Board modifies the regulatory provisions of the previous Basin Plan and its amendments as follows:
(a) Beneficial Use Categories and Definitions: Add definitions for "Aquaculture," "Estuarine Habitat," and "Wetland Habitat." Revise beneficial use categories previously incorporated: "Municipal and Domestic Supply," "Agricultural Supply," "Industrial Process Supply," "Freshwater Replenishment," "Navigation," "Contact Water Recreation," "Non-Contact Water Recreation," "Commercial and Sport Fishing," "Warm Freshwater Habitat, " "Cold Freshwater Habitat," "Inland Saline Water Habitat," "Marine Habitat," "Wildlife Habitat," "Rare, Threatened or Endangered Species," "Migration of Aquatic Organisms," "Spawning, Reproduction, and/or Early Development," and "Shellfish Harvesting."
(b) Water Body Type Definitions: add definition of "Wetlands";
(c) Waste Discharge Requirements (Inland Waters): Add interim restriction on new effluent limits for waters designated as "Municipal and Domestic Supply" (MUN) under State Board Resolution No. 88-63 and Regional Board Resolution No. 89-03.
(d) Add clarification of "Wetland Habitat" designation.
(e) Inland Surface Water:
(1) Add numeric and narrative objectives for total and un-ionized ammonia;
(2) Amend coliform bacteria testing frequency;

(3) Add narrative objective for bioaccumulation;
(4) Add narrative objective for biochemical oxygen demand;
(5) Add narrative objective and revise numeric objectives for chemical constituents in MUN use;
(6) Add numeric and narrative objectives for total residual chlorine;
(7) Add narrative objective for exotic vegetation;
(8) Add numeric objective for methylene blue activated substances;
(9) Revise numeric objective for pesticides;
(10) Add numeric and narrative objective for polychlorinated biphenyls;
(11) Revise numeric objectives for radioactivity in MUN use;
(12) Add maximum contaminant level numeric objective for uranium in MUN use;

(13) Revise numeric objective for temperature;
(14) Revise narrative objective for toxicity;
(15) Revise narrative objective for turbidity;
(16) Add narrative objective for wetlands;
(17) Revise numeric mineral objectives for total dissolved solids (TDS), sulfate, chloride, boron, nitrogen and sodium adsorption ratio for selected inland surface waterbodies.
(f) Ground Water:
(1) Revise numeric objective for bacteria;
(2) Revise numeric objectives for chemical constituents and radionuclides in MUN use;
(3) Add maximum contaminant level numeric objective for Uranium in MUN use;

(4) Revise numeric mineral objectives for TDS, sulfate, chloride, and boron for selected ground water basins;
(5) Add numeric objective for nitrogen.
(g) Site specific objectives:
(1) Add guidelines for the development of site-specific objectives;
(2) Add criteria for site-specific determination of effluent limit.
(h) Waste Discharge Requirements (Land Disposal):
(1) Add procedures for siting inert landfills.

s 3931. Revision of Surface Water Quality Objectives for Chloride and Incorporation of a Revised Policy for Addressing Levels of Chloride in Discharges of Wastewater.
Regional Board Resolution No. 97-02, adopted on January 27, 1997, by the Los Angeles Regional Water Quality Control Board (LARWQCB), modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region by: (1) revising chloride objectives for certain water body segments in the Los Angeles River and San Gabriel River watersheds, (2) establishing interim chloride limits for existing dischargers in the Santa Clara River and Calleguas Creek watersheds, and (3) establishing a procedure to assess chloride loading and effect protection of the agricultural beneficial use in the Santa Clara River and Calleguas Creek watersheds.

s 3932. Removal of the Municipal and Domestic (MUN) Beneficial Use Designation from Two Areas of One Ground Water Basin.
Regional Board Resolution No. 98-18 adopted on November 2, 1998 by the Los Angeles Regional Water Quality Control Board modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region by removing the MUN beneficial use designation from two specifically defined areas of one ground water basin [the portion of West Basin underlying Chevron Facility in El Segundo and the aquifers underlying Terminal Island and portions of the Los Angeles and Long Beach Harbors].

s 3933. A Total Maximum Daily Load for Trash for the East Fork of the San Gabriel River.
Resolution No. 99-15, adopted on October 28, 1999 by the Los Angeles Regional Water Quality Control Board (LARWQCB), modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region by (1) revising the Table of Contents, (2) adding introductory text for Chapter 7 (Total Maximum Daily Loads), and (3) establishing a Total Maximum Daily Load (TMDL) for Trash for the East Fork of the San Gabriel River. The TMDL addresses impairment to water quality due to trash being deposited in and along the stream by recreational users. The TMDL sets a numeric target of no trash in the river which implicitly incorporates a margin of safety, based on a conservative interpretation of narrative water quality objectives. As the responsible party, the U.S. Forest Service is assigned a load allocation of zero trash discharged to the river. On May 25, 2000, the LARWQCB adopted Resolution No. 00-10, which revised the implementation dates contained within the TMDL. The U.S. Forest Service must submit a TMDL Implementation Plan within 60 days of the effective date of the amendment and begin implementation and monitoring within 90 days of the effective date of the amendment. The U.S. Forest Service must demonstrate compliance with the TMDL numeric target no later than April 1, 2003.

s 3934. Septic System Prohibition in the Oxnard Forebay.
Resolution No. 99-13 adopted on August 12, 1999 by the Los Angeles Regional Water Quality Control Board (LARWQCB) amends the Los Angeles Water Quality Control Plan (Basin Plan) to prohibit new septic systems in the Oxnard Forebay area of Ventura County effective on the date of approval by the Office of Administrative Law. The amendment also prohibits discharges from existing septic systems after January 1, 2008. The prohibition does not prevent repairs to existing septic systems in the Oxnard Forebay prior to January 1, 2008, provided that the purpose of such repairs is not to increase capacity. Individual septic systems located on lot sizes equal to or greater than five acres are subject to this prohibition. However, the prohibition does not preclude the LARWQCB from issuing Waste Discharge Requirements for septic systems on lots of greater than five acres.

s 3935. A Total Maximum Daily Load for Trash for the Los Angeles River.
Regional Board Resolution No. 01-013 adopted on September 19, 2001 by the Los Angeles Regional Water Quality Control Board, modified the Regulatory provisions of the Water Quality Plan for the Los Angeles Region (Basin Plan) by (1) revising the Table of Contents and the List of Figures, Tables, and Inserts, (2) adding text to Chapter 3 (Water Quality Objectives) to reference specific guidelines for the Los Angeles River, and (3) adding text to Chapter 7 (Total Maximum Daily Loads Summaries) which establishes a Total Maximum Daily Load (TMDL) for Trash for the Los Angeles River. This TMDL addresses the impairment of water quality due to trash being discharged to the river via municipal storm drains; and will be implemented through the National Pollutant Discharge Elimination System storm-water permits.
The numeric target of zero trash in the river implicitly incorporates a margin of safety, based on a conservative interpretation of narrative water quality objectives. The TMDL establishes a schedule for progressively reducing the amount of trash discharged by ten percent per year, until the target is reached. California Department of Transportation and the Los Angeles County Department of Public Works and its municipal storm water co-permittees are responsible for trash discharged from the storm drains to the Los Angeles River, and have been assigned default waste load allocations. The permittees are required to submit a plan for baseline monitoring to refine waste load allocations within 30 days of the Regional Board's request as authorized by Section 13267 of the California Water Code. The implementation phase of the TMDL is scheduled to begin on October 1, 2003. Compliance with the TMDL numeric target must be demonstrated no later than September 15, 2015.

s 3936. A Total Maximum Daily Load for Trash for the Ballona Creek and Wetland.
Regional Board Resolution No. 01-014, adopted on September 19, 2001 by the Los Angeles Regional Water Quality Control Board, modified the Regulatory provisions of the Water Quality Plan for the Los Angeles Region (Basin Plan) by (1) revising the Table of Contents and the List of Figures, Tables, and Inserts, (2) adding text to Chapter 3 (Water Quality Objectives) to reference specific guidelines for the Ballona Creek and Wetland, and (3) adding text to Chapter 7 (Total Maximum Daily Loads Summaries) which establishes a Total Maximum Daily Load (TMDL) for Trash for the Ballona Creek and Wetland. This TMDL addresses the impairment of water quality due to trash being discharged to the creek via municipal storm drains; and will be implemented through the National Pollutant Discharge Elimination System storm-water permits.
The numeric target of zero trash in the river implicitly incorporates a margin of safety, based on a conservative interpretation of narrative water quality objectives. The TMDL establishes a schedule for progressively reducing the amount of trash discharged by ten percent per year, until the target is reached. California Department of Transportation and the Los Angeles County Department of Public Works and its municipal storm water co-permittees are responsible for trash discharged from the storm drains to the Ballona Creek and Wetland, and have been assigned default waste load allocations. The permittees are required to submit a plan for baseline monitoring to refine the waste load allocations within 30 days of the Regional Board's request as authorized by Section 13267 of the California Water Code. After a period of baseline monitoring, the implementation phase of the TMDL is scheduled to begin on October 1, 2003. Compliance with the TMDL numeric target must be demonstrated no later than September 30, 2015.

s 3937. Revised Bacteria Objectives for Waters Designated for Water Contact Recreation.
On October 25, 2001 the Los Angeles Regional Water Quality Control Board (Regional Board), adopted Resolution No. 01-018 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by incorporating new water quality objectives for bacteria for fresh and marine waters. These objectives update the previous objectives and represent the best data currently available.
In Chapter 3 "Water Quality Objectives" of the Basin Plan, replace Paragraph 2 under "Bacteria, Coliform" on p. 3-3 with the following:
In Marine Waters Designated for Water Contact Recreation (REC-1)
1. Geometric Mean Limits
a. Total coliform density shall not exceed 1,000/100 ml.
b. Fecal coliform density shall not exceed 200/100 ml.
c. Enterococcus density shall not exceed 35/100 ml.
2. Single Sample Limits
a. Total coliform density shall not exceed 10,000/100 ml.
b. Fecal coliform density shall not exceed 400/100 ml.
c. Enterococcus density shall not exceed 104/100 ml.
d. Total coliform density shall not exceed 1,000/100 ml, if the ratio of fecal-to-total coliform exceeds 0.1.
In Fresh Waters Designated for Water Contact Recreation (REC-1)
1. Geometric Mean Limits
a. E. coli density shall not exceed 126/100 ml.
b. Fecal coliform density shall not exceed 200/100 ml.
2. Single Sample Limits
a. E. coli density shall not exceed 235/100 ml.
b. Fecal coliform density shall not exceed 400/100 ml.
Implementation Provisions for Water Contact Recreation Bacteria Objectives
The geometric mean values should be calculated based on a statistically sufficient number of samples (generally not less than 5 samples equally spaced over a 30-day period).
If any of the single sample limits are exceeded, the Regional Board may require repeat sampling on a daily basis until the sample falls below the single sample limit in order to determine the persistence of the exceedance.
When repeat sampling is required because of an exceedance of any one single sample limit, values from all samples collected during that 30-day period shall be used to calculate the geometric mean.

s 3938. Total Maximum Daily Load for Bacteria During Dry Weather at Santa Monica Bay Beaches.
This basin plan amendment establishes a Total Maximum Daily Load (TMDL) for bacteria for Santa Monica Bay Beaches for summer (April to October 31) and winter (November 1 to March 31) dry weather periods. The TMDL: (1) establishes the loading capacity of the bay beaches as the maximum densities of the four bacterial indicators (total coliform, fecal coliform, enterococcus, and total coliform when fecal-to-total ratio exceeds 0.1) specified in the basin plan as bacteriological water quality objectives for marine water having a water contact beneficial use designation; (2) specifies the maximum number of daily and weekly sampling days per dry period which each of the 56 existing shoreline monitoring stations may exceed any singe sample maximum density water quality objective (no days of exceedance are allowed at any station during the summer dry weather period); (3) provides that all responsible jurisdictions and agencies within a subwatershed are jointly responsible for complying with the allowable number of exceedance days for each associated shoreline monitoring site; (4) establishes zero exceedance days during summer and winter dry weather for the three Publicly Owned Treatment Works discharging into Santa Monica Bay; (5) specifies that the samples are to be collected from the wave wash (the compliance point); and, (6) specifies that the allowable exceedance days, and the rolling 30-day geometric bacteria density means (specified in the basin plan as bacteriological water quality objectives) must be achieved within three years for the summer dry weather period and within six years for the winter dry weather period.
The amendment identifies the principle regulatory mechanisms to be used to implement the TMDL as the Los Angeles County Municipal Storm Water NPDES permit, the Caltrans Storm Water Permit, the three NPDES permits for the POTWs, and the authority vested in the Executive officer by Water Code section 13267. The amendment provides that within 120 days of its effective date responsible jurisdictions and agencies must submit coordinated shoreline monitoring plans and identify and provide documentation on 342 specified, potential discharges, and on unspecified, potential discharges to a specified Area of Special Biological Significance. The amendment also provides that within two years after the effective date the regional board must reopen the TMDL to re-evaluate allowable winter dry weather exceedance days and to re-evaluate the reference system and reference year used for setting allowable exceedance days.

s 3939. Resolution No. 2002-022, Amendments to the Water Quality Control Plan for the Los Angeles Region to Incorporate Implementation Provisions for the Region's Bacteria Objectives and to Incorporate a Wet-Weather Total Maximum Daily Load for Bacteria at Santa Monica Bay Beaches.
This basin plan amendment establishes implementation provisions for the bacteria objectives set to protect the water contact recreation (REC1) beneficial use. Specifically, this amendment incorporates a "reference system/antidegradation approach" and a "natural exclusion approach" as implementation procedures for the single sample bacteria objectives in the Basin Plan. It also amends the dry weather TMDL to change the reevaluation date in the TMDL from two years after its effective date to four years after the effective date of the wet weather TMDL to achieve consistency in scheduling between the dry-weather and wet-weather TMDLs.
This basin plan amendment establishes a Total Maximum Daily Load (TMDL) for bacteria for Santa Monica Bay Beaches during wet weather, defined as days with one-tenth of an inch of rain or greater and the three days following the rain event as well. The TMDL: (1) establishes the loading capacity of the bay beaches as the maximum densities of the four bacterial indicators (total coliform, fecal coliform, enterococcus, and total coliform when fecal-to-total ratio exceeds 0.1) specified in the basin plan as bacteriological water quality objectives for marine water having a water contact beneficial use designation; (2) specifies the maximum number of daily and weekly wet-weather sampling days per year which each of the 55 existing shoreline monitoring stations may exceed any singe sample maximum bacterial density water quality objective; (3) provides that all responsible jurisdictions and agencies within a subwatershed are jointly responsible for complying with the allowable number of exceedance days for each associated shoreline monitoring site; (4) establishes zero exceedance days during wet weather for the three Publicly Owned Treatment Works discharging into Santa Monica Bay and its watershed; (5) establishes zero exceedance days during wet weather for nonpoint sources; (6) specifies that the allowable exceedance days, and the rolling 30-day geometric bacteria density means (specified in the basin plan as bacteriological water quality objectives) must be achieved no later than ten or eighteen years after the effective date of the TMDL, depending on the implementation approach undertaken; (7) requires responsible jurisdictions and agencies to conduct daily or systematic weekly sampling at all major drains and creeks and at existing monitoring stations at beaches without storm drains or creeks; and, (8) specifies that the samples are to be collected from the wave wash (the compliance point).
The amendment identifies the principal regulatory mechanisms to be used to implement the TMDL as the Los Angeles County Municipal Storm Water NPDES permit, the Caltrans Statewide Storm Water Permit, the three NPDES permits for the POTWs, the authority vested in the Executive officer by Water Code sections 13263 and 13267, and regulations to be adopted pursuant to Water Code section 13291. The amendment provides that within 120 days of its effective date responsible jurisdictions and agencies must submit coordinated shoreline monitoring plans. The amendment also provides that within twenty months after the effective date responsible jurisdictions and agencies shall provide a draft written report to the regional board outlining how each intends to cooperatively achieve compliance with the TMDL. The amendment then provides that within two years responsible jurisdictions and agencies shall provide a final written report to the regional board outlining how each intends to cooperatively achieve compliance with the TMDL. The amendment also provides that within four years after the effective date the regional board shall reconsider the TMDL to refine allowable wet-weather exceedance days, re-evaluate the reference system and reference year used for setting allowable exceedance days and re-evaluate whether there is a need for further clarification or revision of the geometric mean implementation provision. Finally, the amendment sets compliance milestones at years 6, 8 and 10 for responsible jurisdictions and agencies not pursuing an integrated water resources approach, and at years 6, 10, 15 and 18 for responsible jurisdictions and agencies pursuing an integrated water resources approach to implementation.

s 3939.1. Update of Ammonia Objectives for Inland Surface Waters.
The amendment revises the Basin Plan by updating the ammonia water quality objectives for inland surface waters. The Basin Plan objectives for ammonia are based on revised criteria developed by the U.S. Environmental Protection Agency (USEPA) in the "1999 Update of Ambient Water Quality Criteria for Ammonia." These most recent USEPA freshwater aquatic life criteria for ammonia supercede previous criteria. The previous Basin Plan one-hour average and four-day average objectives for waters designated as "WARM" are retained for waters not characteristic of freshwater.
The ammonia objectives provide 1-hour average, 4-day average, and 30-day average objectives for ammonia. The one-hour average objective is dependent on pH and fish species (salmonids present or absent). It is assumed that salmonids may be present in waters designated in the Basin Plan as "COLD" or "MIGR" and that salmonids are absent in waters not designated in the Basin Plan as "COLD" or "MIGR," in the absence of additional information to the contrary. The 30-day average objective is dependent on pH and temperature. At lower temperatures, the 30-day average objective also is dependent on the presence or absence of early life stages of fish (ELS). Water bodies with a Basin Plan designation of "SPWN" support high quality aquatic habitats suitable for reproduction and early development of fish and, therefore, these water bodies are designated as ELS present waters. The four-day average objective is 2.5 times the 30-day average objective.
The Basin Plan amendment also includes specific implementation provisions for the objectives. These include methods for (1) determination of freshwater, brackish water or salt water conditions; (2) determination of presence or absence of salmonids when selecting the appropriate one-hour average objective; (3) determination of presence or absence of ELS when selecting the appropriate 30-day average objective; (4) implementation of the objectives where more sensitive threatened or endangered species are present; and (5) translation of objectives to effluent limitations using a method similar to that in the "Policy for Implementation of Toxics Standards for Inland Surface Waters, Enclosed Bays, and Estuaries of California" (2000).

s 3939.2. A Total Maximum Daily Load for Nitrogen Compounds and Related Effects in Calleguas Creek, its Tributaries, and Mugu Lagoon.
Los Angeles Regional Water Quality Control Board (Regional Board) Resolution No. 02-017, adopted on October 24, 2002 by the Regional Board, modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region by establishing a Total Maximum Daily Load (TMDL) for nitrogen compounds in Calleguas Creek, its tributaries, and Mugu Lagoon. The TMDL specifies concentration-based targets for ammonia, nitrate, nitrite, and combined nitrate and nitrite, which must be fully attained seven years after the effective date of the TMDL. The TMDL includes a margin of safety with both implicit and explicit components. The TMDL establishes a four-year plan for reducing nitrogen loading from five wastewater treatment plants in the watershed. To allow time to meet the targets, interim limits will be allowed. The final wasteload allocations for ammonia assigned to the wastewater treatment plants must be met no later than October 24, 2004, and the final wasteload allocations for nitrate and nitrite must be met four years after the effective date of the TMDL. Load allocations for agriculture and other nonpoint source discharges are implemented through various management practices. One year after the effective date of the TMDL, monitoring plans to evaluate the effectiveness of the TMDL must be submitted to the Regional Board by Calleguas Creek Watershed Management Plan Water Resources/Water Quality Subcommittee (CCWMP). CCWMP is responsible for the watershed monitoring and special studies required by this TMDL. The special studies must be completed five years after the effective date of the TMDL.

s 3939.3. Compliance Schedule Policy.
On January 30, 2003 the Los Angeles Regional Water Quality Control Board (Regional Board), adopted Resolution No. 2003-01 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by incorporating language authorizing the inclusion of compliance schedules in National Pollutant Discharge Elimination System (NPDES) permits. The amendment revised the regulatory provisions of the Basin Plan by adding language to Chapter 3 "Water Quality Objectives" and Chapter 4, "Strategic Planning and Implementation."
The language specifies that where the Regional Board determines that it is infeasible for an existing discharger to achieve immediate compliance with an effluent limitation specified to implement a new, revised or newly interpreted water quality standard, the Regional Board may establish a compliance schedule in the discharger's Waste Discharge Requirements (NPDES permit). In addition, the Regional Board may establish a compliance schedule to implement a total maximum daily load (TMDL) adopted as a single permitting action (i.e., through one NPDES permit). This provision authorizes compliance schedules for standards that are adopted, revised or newly interpreted after the effective date of this amendment. An authorized compliance schedule shall include a time schedule for completing specific actions (including interim effluent limits), final effluent limitations, and a final compliance date, based on the shortest possible time required to achieve compliance.
Except in the case of a TMDL adopted as a single permitting action, the provisions require that compliance shall be achieved no later than five years from the date of permit issuance, reissuance or modification, and no later than ten years after the adoption or interpretation of an applicable standard, whichever is the shorter period of time. In the case of a TMDL adopted as a single permitting action, a compliance schedule of greater than five years from the date of permit issuance, reissuance or modification may be granted, but the compliance schedule must be as short as possible as determined in the TMDL support document, and may only be used when implementing a new, revised or newly interpreted water quality standard.
To document the need for and justify the duration of any such compliance schedule, a discharger must submit the following information, at a minimum: (1) the results of a diligent effort to quantify pollutant levels in the discharge and the sources of the pollutant(s) in the waste stream; (2) documentation of source control efforts currently underway or completed, including compliance with any pollution prevention programs that have been established; (3) a proposed schedule for additional source control measures or waste treatment; (4) the highest discharge quality that can reasonably be achieved until final compliance is attained; and (5) a demonstration that the proposed schedule is as short as possible, taking into account economic, technical and other relevant factors. The need for additional information and analyses will be determined by the Regional Board on a case-by-case basis.

s 3939.4. Total Maximum Daily Load for Bacteria at Marina del Rey Mothers' Beach and Back Basins.
On August 7, 2003, the Los Angeles Regional Water Quality Control Board (Regional Board), adopted Resolution No. 2003-012 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by incorporating a total maximum daily load for bacteria at Marina del Rey Mothers' Beach and back basins. The regulatory provisions are added to Chapter 7 of the Water Quality Control Plan.
Numeric targets for the TMDL are expressed as days of exceedance of bacteria objectives. The implementation plan for this TMDL stipulates that: No days of exceedance are permitted at any monitoring location during the summer dry-weather season (April 1 to October 31) and the rolling 30-day geometric mean limits must be met at all times; a maximum of three days of exceedance is permitted for the winter dry-weather season (November 1 to March 31), and the rolling 30-day geometric mean limits must be met at all times. Some monitoring locations are allocated fewer than three allowable exceedance days in order to maintain existing water quality required by State and federal antidegradation provisions; a maximum of seventeen days of exceedance is permitted during the wet-weather season (defined as days with 0.1 inch or more of rain and the three days following the rain event) and the rolling 30-day geometric mean limits must be met at all times. Some monitoring locations are allocated fewer than seventeen allowable exceedance days in order to maintain existing water quality as required by State and federal antidegradation provisions.
Urban runoff to Marina del Rey Harbor is regulated as a point source under the Los Angeles County Municipal Storm Water National Pollutant Discharge Elimination Systems (NPDES) Permit (MS4), the California Department of Transportation Storm Water Permit, and the General Construction and Industrial Storm Water Permits.
Nonpoint sources are given load allocations of zero days of allowable exceedances for each time period. The load allocation for the rolling 30-day geometric mean for nonpoint sources is also zero days of allowable exceedances.

s 3939.5. Suspension of Recreational Beneficial Uses in Engineered Channels During Unsafe Wet Weather Conditions.
On July 10, 2003, the Los Angeles Regional Water Quality Control Board (Regional Board), adopted Resolution No. 2003-010 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by suspending the recreational beneficial uses in engineered channels during unsafe wet weather conditions, and creating a new Table 2-1a "Recreational Beneficial Uses of Inland Surface Waters," which designates the 39 water body segments to which the High Flow Suspension would apply. The following text is added to Chapter 2 of the Water Quality Control Plan:
"The High Flow Suspension shall apply to water contact recreational activities associated with the swimmable goal as expressed in the federal Clean Water Act section 101(a)(2) and regulated under the REC-1 use, non-contact water recreation involving incidental water contact regulated under the REC-2 use, and the associated bacteriological objectives set to protect those activities. Water quality objectives set to protect (1) other recreational uses associated with the fishable goal as expressed in the federal Clean Water Act section 101(a)(2) and regulated under the REC-1 use and (2) other REC-2 uses (e.g., uses involving the aesthetic aspects of water) shall remain in effect at all times for waters where the (ad) footnote appears in Table 2-1a. The High Flow Suspension shall apply on days with rainfall greater than or equal to 1/2 inch and the 24 hours following the end of the 1/2-inch or greater rain event, as measured at the nearest local rain gauge, using local Doppler radar, or using widely accepted rainfall estimation methods. The High Flow Suspension only applies to engineered channels, defined as inland, flowing surface water bodies with a box, V-shaped or trapezoidal configuration that have been lined on the sides and/or bottom with concrete. The water bodies to which the High Flow Suspension applies are identified in Table 2-1a in the column labeled "High Flow Suspension".
In Chapter 2, a new table is added, Table 2-1a "Recreational Beneficial Uses of Inland Surface Waters" following Table 2-1 "Beneficial Uses of Inland Surface Waters".

s 3939.6. A Total Maximum Daily Load for Nitrogen Compounds in the Santa Clara River.
Los Angeles Regional Water Quality Control Board (Regional Board) Resolution No. 2003-011, adopted on August 7, 2003 by the Regional Board, modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region (Basin Plan) by (1) revising the Table of Contents, (2) adding introductory text for Chapter 7 (Total Maximum Daily Loads), and (3) establishing a Total Maximum Daily Load (TMDL) for nitrogen compounds in the Santa Clara River. The TMDL specifies concentration-based targets for ammonia, nitrate, nitrite, and combined nitrate and nitrite. The TMDL includes a margin of safety with both implicit and explicit components.
Numeric targets will primarily be achieved by limiting the amount of nitrogen compounds discharged from four major permitted wastewater treatment plants (Saugus Water Reclamation Plant (WRP), Valencia WRP, Fillmore Publicly Owned Treatment Work (POTW), and Santa Paula POTW. These major point sources are assigned wasteload allocations for ammonia, nitrite, nitrate, and combined nitrite and nitrate. At the Regional Board's discretion, the Saugus and Valencia WRPs may be allowed higher interim loads for nitrate, nitrite, and combined nitrate and nitrite for a period as short as possible, but not to exceed eight years from the effective date of the TMDL. The Fillmore and Santa Paula POTWs may be allowed higher interim loads for combined ammonia, nitrate and nitrite for a period also not to exceed eight years after the effective date of the TMDL. Receiving water monitoring is required weekly of these major point sources.
Minor point sources (including stormwater sources) in Reaches 3 and 7 are also assigned concentration-based wasteload allocations for ammonia and combined nitrite and nitrate. Wasteload allocations for minor point sources will be implemented through effluent limits or Best Management Practices (BMPs) for stormwater. Load allocations for nonpoint sources for combined ammonia, nitrite, and nitrate are implemented through State Water Resources Control Board Management Practices.
The County Sanitation District of Los Angeles County (CSDLAC) must submit the results from a water effects ratio study for ammonia when the TMDL takes effect. Within one year after the effective date of the TMDL, the following workplans must be submitted to the Regional Board for approval: (1) a workplan for estimating nitrogen loading from stormwater sources which includes triggers for conducting source identification and implementing BMPs must be submitted by affected MS4 (municipal separate storm sewer systems) permittees; (2) a workplan for monitoring nitrogen-related effects and evaluate progress in meeting targets must be submitted by affected major National Pollutant Discharge Elimination System permittees; and (3) a special studies workplan to evaluate site-specific objectives for nitrate must be submitted by CSDLAC. If monitoring and study results indicate it is appropriate, the Regional Board will consider adopting site-specific objectives for ammonia within one year after the effective date of the TMDL, and site-specific objectives for nitrate, and combined nitrite and nitrate within four years after the effective date of the TMDL. If site-specific objectives are adopted, the TMDL will be revised through a Basin Plan amendment. Five years after the effective date of the TMDL, the Regional Board will consider whether the numeric targets and wasteload allocations specified in the TMDL are sufficient to protect the Santa Clara River from nutrient effects of discharged nitrogen compounds or whether the TMDL must be revised through a Basin Plan amendment.

s 3939.7. A Total Maximum Daily Load for Nitrogen Compounds and Related Effects in the Los Angeles River and its Tributaries.
Los Angeles Regional Water Quality Control Board (Regional Board) Resolution No. 03-009, adopted on July 10, 2003 by the Regional Board, modified the regulatory provisions of the Water Quality Control Plan for the Los Angeles Region (Basin Plan) by (1) revising the Table of Contents, (2) adding introductory text for Chapter 7 (Total Maximum Daily Loads), and (3) establishing a Total Maximum Daily Load (TMDL) for nitrogen compounds and related effects in the Los Angeles River and its tributaries. The TMDL specifies concentration-based targets for ammonia, nitrate, nitrite, and combined nitrate and nitrite, which must be fully attained five years after the effective date of the TMDL. The TMDL includes a margin of safety with both implicit and explicit components.
Numeric targets will primarily be achieved by limiting the amount of nitrogen compounds discharged from three major wastewater treatment plants (Donald C. Tillman Water Reclamation Plant, Los Angeles-Glendale Water Reclamation Plant, and Burbank Water Reclamation Plant). To provide these major permitted discharges time to meet wasteload allocations, higher interim limits will be allowed for ammonia and combined nitrite and nitrate for a period of 3.5 years from the effective date of the TMDL. Compliance with the separate nitrate and nitrite wasteload allocations is not required during this interim period. Minor permitted point source dischargers are also assigned wasteload allocations, which must be met immediately. Load allocations for nonpoint sources may be developed if it is determined that they are necessary after wasteload allocations have been implemented.
Workplans for monitoring nitrogen compounds and related effects must be submitted by MS4 (municipal separate storm sewer systems) permittees and major National Pollutant Discharge Elimination System permittees within one year after the effective date of the TMDL. A special studies workplan to evaluate site-specific objectives, seasonal allocations, and point of compliance must be submitted by the City of Los Angeles within one year after the effective date of the TMDL, and the results of the studies within two and a half years after the effective date of the TMDL. Three and a half years after the effective date of the TMDL, if monitoring and study results indicate it is appropriate, the Regional Board will consider adopting site specific objectives for ammonia, nitrate, and nitrite and revising the TMDL. Five years after the effective date of the TMDL, the Regional Board will consider whether the numeric targets and wasteload allocations specified in the TMDL are sufficient to protect the Los Angeles River and its tributaries from the nutrient effects of discharged nitrogen compounds or whether the TMDL must be revised.

s 3939.8. Amendment to the Water Quality Control Plan for the Los Angeles Region to Revise the Water Quality Objective for Chloride in the Lower Santa Clara River.
This amendment to the Los Angeles Water Quality Control Plan (Basin Plan) raises the water quality objective for chloride in the Lower Santa Clara River between A Street, Fillmore, and Freeman Diversion Dam near Saticoy from 80 mg/L to 100 mg/L. This change appears in the Basin Plan in Table 3-8, Water Quality Objectives for Selected Constitutents in Inland Surface Waters under "chloride" in Section 3 of the Basin Plan.

s 3939.9. Ammonia Objectives for Inland Surface Waters Not Characteristic of Freshwater.
On March 4, 2004 the Los Angeles Regional Water Quality Control Board (Regional Board), adopted Resolution No. 2004-022 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by updating the ammonia objectives for inland surface waters not characteristic of freshwater such that they are consistent with the U.S. EPA "Ambient Water Quality Criteria for Ammonia (Saltwater)-1989." The amendment revised the regulatory provisions of the Basin Plan by adding language to Chapter 3 "Water Quality Objectives."
For inland surface waters not characteristic of freshwater, the proposed objectives are a 4-day average concentration of un-ionized ammonia of 0.035 mg/L and a one-hour average concentration of un-ionized ammonia of 0.233 mg/L. The proposed objectives are fixed concentrations of un-ionized ammonia, independent of pH, temperature, or salinity. The proposed amendment includes an implementation procedure to convert un-ionized ammonia objectives to total ammonia effluent limits. The proposed amendment also simplifies the implementation procedures for translating ammonia objectives into effluent limits in situations where a mixing zone has been authorized by the Regional Board. Finally, the proposed amendment revises the implementation procedure for determining saltwater, brackish or freshwater conditions, to be consistent with the proposed objectives. The proposed objectives will apply only to inland surface waters not characteristic of freshwater (including enclosed bays, estuaries and wetlands) and do not impact the Ammonia Water Quality Objectives for ocean waters contained in the California Ocean Plan.

s 3939.10. Total Maximum Daily Load for Chloride in the Upper Santa Clara River.
The Los Angeles Regional Water Quality Control Board (Regional Board) adopted under Resolution Nos. 02-018, 03-008, and 04-004 a Total Maximum Daily Load (TMDL) for Chloride in the Upper Santa Clara River. The TMDL specifies concentration-based targets for chloride, which must be fully attained 13 years after the effective date of the TMDL. The TMDL allocated interim wasteloads for chloride to the County Sanitation Districts of Los Angeles County's (Districts') Saugus and Valencia Water Reclamation Plants. It requires the Districts to conduct special studies to evaluate the appropriate threshold for the protection of sensitive agricultural supply use and Endangered Species Protection, determine the interaction between surface water and groundwater as it may affect the loading of chloride and its linkage to surface water quality, determine Site-Specific Objectives for Chloride for Sensitive Agriculture, develop an Anti-Degradation Analysis for Revision of Chloride Objective by Site-Specific Objectives, and develop a pre-planning report on conceptual compliance measures to meet different hypothetical final wasteload allocations. The Regional Board will re-evaluate the implementation schedule 12 months after the effective date of the TMDL and, if necessary, 9 years after the effective date of the TMDL.

s 3939.11. Revising Interim Ammonia Effluent Limits Contained Within a Total Maximum Daily Load for Nitrogen Compounds and Related Effects in the Los Angeles River and Its Tributaries.
Los Angeles Regional Water Quality Control Board (Regional Board) adopted Resolution No. 03-016 on December 4, 2003, which modified regulatory provisions of the Water Quality Control Plan for the Los Angeles Region (Basin Plan) by revising interim ammonia effluent limits for the D.C. Tillman and Los Angeles-Glendale Water Reclamation Plants (WRPs) contained within the Total Maximum Daily Load (TMDL) for nitrogen compounds and related effects for the Los Angeles River. The thirty-day average and daily maximum interim limits for total ammonia as nitrogen for the Donald C. Tillman WRP were changed from 21.0 and 21.7 milligrams per liter (mg/L), respectively, to 20.5 and 24.7 mg/L. For the Los Angeles-Glendale WRP, the thirty-day average and daily maximum interim limits for total ammonia as nitrogen were changed from 16.5 and 19.4 mg/L, respectively, to 18.8 and 24.2 mg/L.

s 3939.12. Total Maximum Daily Load for Bacteria at Los Angeles Harbor.
On July 1, 2004, the Los Angeles Regional Water Quality Control Board (Regional Board) adopted Resolution No. 2004-011 amending the Water Quality Control Plan for the Los Angeles Region (Basin Plan). The amendment revised the Basin Plan by incorporating a Total Maximum Daily Load (TMDL) for bacteria at Los Angeles Harbor (Inner Cabrillo Beach and Main Ship Channel, including the Inner Harbor). The regulatory provisions are added to Chapter 7 of the Water Quality Control Plan.
Numeric targets for this TMDL are expressed as days of exceedance of bacteria objectives contained in the Basin Plan. These targets apply to three seasons: summer dry-weather (April 1 to October 31), winter dry-weather (November 1 to March 31), and wet-weather (days with 0.1 inch or more of rain and the three days following the rain event); and to monitoring sites specified in the Basin Plan.
For nonpoint sources (load allocations), single sample bacterial densities in the Main Ship Channel for any season are zero days of allowable exceedance, and the rolling 30-day geometric mean for any season or monitoring site is zero days of allowable exceedance. Single sample bacterial densities for summer dry-weather at Inner Cabrillo Beach are zero days of allowable exceedance. Single sample exceedance days for winter dry-weather and wet-weather seasons for specific monitoring sites at Inner Cabrillo Beach are presented in Basin Plan Table 7-11.2. The rolling 30-day geometric mean for any season or monitoring site at Inner Cabrillo Beach is zero days of allowable exceedance.
For point sources (wasteload allocations), single sample bacterial densities for summer dry-weather in the Main Ship Channel are zero days of allowable exceedance. Single sample exceedance days for winter dry-weather and wet-weather seasons for specific monitoring sites in the Main Ship Channel are presented in Basin Plan Table 7-11.2. The rolling 30-day geometric mean for any season or monitoring site in the Main Ship Channel is zero days of allowable exceedance. Single sample bacterial densities at Inner Cabrillo Beach for any season are zero days of allowable exceedance, and the rolling 30-day geometric mean for any season or monitoring site at Inner Cabrillo Beach is zero days of allowable exceedance.
Discharges from general National Pollutant Discharge Elimination System (NPDES) permits, general industrial storm water permits, and general construction storm water permits are not expected to be a significant source of bacteria. Therefore, the wasteload allocations for these discharges are zero (0) days of allowable exceedances for all three time periods and for the single sample limits and the rolling 30-day geometric mean. Any future enrollees under a general NPDES permit, general industrial storm water permit, or general construction storm water permit within the watershed will also be subject to a wasteload allocation of zero days of allowable exceedances.

s 3939.13. Revision of a Total Maximum Daily Load for Trash in the Ballona Creek and Wetland.
On March 4, 2004, the Los Angeles Regional Water Quality Control Board adopted Resolution No. 2004-023 amending the Total Maximum Daily Load for Trash in the Ballona Creek and Wetland contained within the Water Quality Control Plan for the Los Angeles Region. The amendment revises the definition of "full-capture device" and would allow for both single devices and treatment trains or "systems." Full capture devices and systems must be sized to handle the flow from a one-year, one-hour storm. The amendment provides the equation and isohyetal map to be used for sizing the full capture devices and systems.

s 3939.14. Revised Recreational Water Quality Standards for Ballona Creek Reaches 1 and 2.
State Water Resources Control Board Resolution No. 2005-0015, adopted on January 20, 2005, amended the Water Quality Control Plan for the Los Angeles Region by: (1) dedesignating Water Contact Recreation (REC-1) associated with swimming-related activities as a potential use from "Ballona Creek" (Reach 1) and "Ballona Creek to Estuary" (Reach 2); (2) designating Limited Water Contact Recreation (LREC-1) as an existing use for Reach 2; (3) adding a definition for LREC-1; (4) clarifying the dividing line between Reach 1 and Reach 2; and (5) adding water quality objectives for bacteria that apply to LREC-1, including geometric mean and single sample limits for E-coli and fecal coliform.

s 3939.15. Total Maximum Daily Load for Bacteria in Malibu Creek.
This Basin Plan amendment establishes a Total Maximum Daily Load (TMDL) for bacteria in Malibu Creek and Lagoon for summer (April 1 to October 31) dry weather, winter (November 1 to March 31) dry weather and wet-weather days. Wet-weather days are defined as any day receiving 0.1 inch of rain or more and three days thereafter. The TMDL establishes the loading capacity of the Malibu Creek and Lagoon as the maximum densities of the four bacterial indicators (total coliform, e. coli, fecal coliform, and enterococcus) as specified in the Basin Plan as bacteriological water quality objectives for fresh and marine water having a water contact beneficial use designation. This TMDL will be implemented in three phases over a ten-year period. Within three years of the effective date of the TMDL, compliance with the allowable number of summer dry-weather exceedance days and the rolling 30-day geometric mean targets must be achieved. In response to a written request from the responsible jurisdiction or responsible agency, the Executive Officer of the Los Angeles Regional Water Quality Board (Los Angeles Water Board) may extend the compliance date for the summer dry- weather allocations from three up to six years from the effective date of this TMDL. Within six years of the effective date of the TMDL, compliance with the allowable number of winter dry-weather exceedance days and the rolling 30-day geometric mean targets must be achieved. Within ten years of the effective date of the TMDL, compliance with the allowable number of wet-weather exceedance days and rolling 30-day geometric mean targets must be achieved. The Los Angeles Water Board may extend the wet-weather compliance date up to July 15, 2021 at its discretion, by adopting a subsequent Basin Plan amendment that complies with applicable law. (continued)