California Code of Regulations
Title 23 - Waters
Division 4 - Regional Water Quality Control Boards
Chapter 1 - Water Quality Control Plans, Policies, and Guidelines
Article 4 - Los Angeles Region
Section 3930 - Revised Water Quality Control Plan for the los Angeles Region

Universal Citation: 23 CA Code of Regs 3930

Current through Register 2024 Notice Reg. No. 38, September 20, 2024

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.

1. New article 4 and section filed 2-23-95; operative 2-23-95. Resolution No. 94-007 adopted by the Los Angeles Regional Water Quality Control Board 6-13-94. Resolution No. 94-89 adopted by State Water Resources Control Board 11-17-94. Approved by OAL pursuant to Government Code section 11353 (Register 95, No. 8).
2. Nonsubstantive amendments to the Basin Plan for the Los Angeles Region to update Chapter 2, "Beneficial Uses" with updated surface and groundwater maps and corresponding beneficial use tables filed 3-28-2013; amendments adopted 10-10-2011 by the Los Angeles Regional Water Control Board Resolution No. R11-011; approved on 8-21-2012 by the State Water Resources Control Board Resolution No. 2012-0041; approved by OAL pursuant to Government Code section 11353 (Register 2013, No. 13).
3. Non-regulatory amendment to administratively update Chapter 3 "Water Quality Objectives" of the Basin Plan, by incorporating previously adopted Basin Plan amendments and updated tables, filed 10-13-2014; amendments adopted 5-2-2013 by Los Angeles Regional Water Quality Control Board Resolution No. R13-003; approved by State Water Resources Control Board Resolution No. 2014-0022 on 5-20-2014; approved by OAL pursuant to Government Code section 11353 on 10-13-2014 (Register 2014, No. 42).
4. Nonsubstantive amendment to administratively update Chapter 1 "Introduction," Chapter 5 "Plans and Policies" and Chapter 6 "Monitoring Assessment" of the Basin Plan, filed 3-7-2016; amendments adopted 9-11-2014 by Los Angeles Regional Water Quality Control Board Resolution No. R14-009; approved 6-2-2015 by State Water Resources Control Board Resolution No. 2015-0038; approved by OAL pursuant to Government Code section 11353 on 3-7-2016 (Register 2016, No. 11).
5. Nonsubstantive amendments to administratively update Chapter 4 "Strategic Planning and Implementation" and specific geographic information in Chapter 2 "Beneficial Uses" of the Basin Plan filed 8-8-2017; amendments adopted 6-9-2016 by Los Angeles Regional Water Quality Control Board Resolution No. R16-004; amendments approved by State Water Resources Control Board Resolution No. 2017-0021; approved by OAL pursuant to Government Code section 11353 on 8-8-2017 (Register 2017, No. 32).
6. Nonsubstantive amendments to administratively update Chapter 4, "Strategic Planning and Implementation" and Chapter 5, "Plans and Policies of the Basin Plan filed 6-22-2021; amendments adopted 6-13-2019 by the Los Angeles Regional Water Quality Control Board Resolution No. R19-006; approved 4-21-2020 by State Water Resources Control Board Resolution No. 2020-0008; approved by OAL pursuant to Government Code section 11353 on 6-22-2021 (Register 2021, No. 26).

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