Cal. Code Regs. tit. 23 § 3939.38
On October 1, 2009, the Los Angeles Regional Water Quality Control Board adopted Resolution No. R09-005, amending the Water Quality Control Plan for the Los Angeles Region by establishing a Total Maximum Daily Load (TMDL) for OC Pesticides, PCBs, Sediment Toxicity, PAHs, and Metals for Colorado Lagoon. The TMDL includes numeric targets for the water column based on California Toxics Rule criteria for protection of human health, sediment targets based on Effects Range-Low 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. Mass-based waste load allocations for Municipal Separate Storm Sewer System (MS4) permittees, including the City of Long Beach, the Los Angeles County Flood Control District, and Caltrans are allocated to five major storm drain outfalls that currently discharge to the lagoon. Concentration-based waste load allocations are assigned to the above-mentioned MS4 permittees for other minor stormwater outfalls, minor National Pollutant Discharge Elimination System (NPDES) permittees, and other stormwater and non-stormwater permittees.
The TMDL requires implementation to be carried out by responsible jurisdictions including, but not limited to, the City of Long Beach, the Los Angeles County Flood Control District and Caltrans. The proposed implementation actions include a range of activities that are proposed by the Los Angeles County Flood Control District and City of Long Beach in the Los Angeles County Termino Avenue Drain Project and Colorado Lagoon Restoration Project, respectively. Implementation of the proposed actions should result in attainment of the TMDL allocations. If the proposed actions are not implemented or otherwise do not result in attainment of allocations, additional remedial actions will be necessary.
The TMDL requires the permitted MS4 permittees, minor NPDES permittees, and other stormwater and non-stormwater dischargers to achieve applicable wasteload allocations within 7 years. The TMDL requires responsible parties for the assigned wasteload allocations to submit monitoring and reporting plans within six months of the effective date of the TMDL. Responsible agencies are required to submit progress reports to provide updates on the status of implementation actions performed under the TMDL every two years after the effective date of the TMDL. The plan is required to contain mechanisms to ensure progress toward meeting the assigned wasteload allocations.
Cal. Code Regs. Tit. 23, § 3939.38