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 3939.44 - A Total Maximum Daily Load for Toxic Pollutants in Dominguez Channel and Greater los Angeles and Long Beach Harbor Waters

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
On May 5, 2011, the Los Angeles Regional Water Quality
					 Control Board (Los Angeles Water Board) adopted Resolution No. R11-008,
					 amending the Water Quality Control Plan for the Los Angeles Region by
					 establishing a TMDL for Toxic Pollutants in Dominguez Channel and Greater Los
					 Angeles and Long Beach Harbor Waters. The TMDL includes numeric targets for the
					 water column based on California Toxics Rule criteria for protection of human
					 health; sediment targets based on the narrative standards of the Basin Plan,
					 the Enclosed Bays and Estuaries Plan, Sediment Quality Objectives Part 1, and
					 sediment quality guidelines compiled by the National Oceanic and Atmospheric
					 Administration; and fish tissue targets based on Office of Environmental Health
					 Hazard Assessment (OEHHA) Fish Contaminant Goals. Final load allocations (LAs)
					 are assigned to direct atmospheric deposition and bed sediments. Final waste
					 load allocations (WLAs) are assigned to stormwater discharges from municipal
					 separate storm sewer systems, California Department of Transportation
					 (Caltrans) facilities, and construction and industrial facilities, and other
					 NPDES permitted discharges in both wet and dry weather. Dominguez Channel
					 freshwater allocations are set for wet weather only because exceedances of
					 water quality standards have only been documented in wet weather.
TMDL implementation will be carried out by assigned
					 responsible parties for (1) Dominguez Channel, Torrance Lateral, and Dominguez
					 Channel Estuary; (2) Greater Los Angeles and Long Beach Harbor waters
					 (including Consolidated Slip); and (3) Los Angeles River and San Gabriel River
					 as listed in detail in the Basin Plan, Table 7-40.1. Responsible parties can
					 implement a variety of implementation strategies to meet the required WLAs and
					 LAs by reducing sediment transport from the upstream and nearshore watersheds
					 to Dominguez Channel and Greater Los Angeles and Long Beach Harbor waters, and
					 implementing targeted actions addressing internal reservoirs of contaminants.
					 Dischargers and responsible parties may implement structural and or
					 non-structural BMPs and work collaboratively to achieve the numeric targets and
					 allocations.
The TMDL requires responsible parties for the assigned WLAs
					 and LAs to submit: monitoring plans (MP) and Implementation Plans (IP) and
					 Contaminated Sediment Management Plans (CSMP) within twenty months (MP) and two
					 years (IP and CSMP) after the effective date of the TMDL. Responsible agencies
					 shall submit progress reports to provide updates on the status of
					 implementation actions performed under the TMDL three years after the effective
					 date of the TMDL and annually thereafter. The Los Angeles Water Board will
					 reconsider targets, WLAs, and LAs six years after the effective date of the
					 TMDL based on new policies, data or special studies. The implementation
					 schedule for achieving applicable WLAs and LAs is 20 years after the effective
					 date of the TMDL.
1. New
					 section summarizing amendments to basin plan filed 3-21-2012; amendments
					 approved by State Water Resources Control Board Resolution No. 2012-0008 on
					 2-7-2012; amendments approved by OAL pursuant to Government Code section
					 11353 on
					 3-21-2012 (Register 2012, No. 12).