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Ballona Creek Metals TMDL

Ballona Creek Estuary Toxics TMDL

Future TMDLs

Ballona Creek Estuary Toxics TMDL Related Links:

Ballona Creek Metals and Estuary Toxics Coordinated Monitoring Plan (2.4 MB)

For questions or comments please email to [email protected] or call 1(800) 974-9794.

Draft Ballona Creek Estuary Toxics Implementation Plan (Sections) 18 MB

Draft Ballona Creek Estuary Toxics Implementation Plan (Appendices) 35 MB

Toxicity Identification Evaluation Study (Sediment TIE) in Ballona Creek Estuary (998 KB)

TMDL for Toxic Pollutants in the Ballona Creek Estuary (Estuary Toxics TMDL)

TMDL Effective Date: January 11, 2006
Final Compliance Date: January 11, 2021

The City of Los Angeles is the lead agency in the Ballona Creek watershed to address the sediment toxicity impairments in the estuary associated with the presence of toxic pollutants such as chlordane, DDT, PCBs, PAHs, cadmium, copper, lead, silver and zinc.

The Regional Water Quality Control Board (RWQCB) approved the Ballona Creek Estuary Toxics TMDL on July 7, 2005 and TMDL became effective on January 11, 2006. The Estuary Toxics TMDL requires that the responsible agencies submit the draft Coordinated Monitoring Plan (CMP) to the RWQCB by January 11, 2007 and the TMDL Implementation Plan by January 11, 2010.

The Estuary Toxics TMDL defines milestones for achieving compliance with the waste load allocations (WLAs) for the toxic pollutants based on the percentage of total watershed area:

2012 (7 years after the effective date of the TMDL), demonstrate compliance with 25% of the total drainage area served by the municipal separate storm sewer system (MS4) is meeting the WLAs for sediment.
2014 (9 years after the effective date of the TMDL), demonstrate compliance with 50% of the total drainage area served by the MS4 is meeting the WLAs for sediment.
2016 (11 years after the effective date of the TMDL), demonstrate compliance with 75% of the total drainage area served by theMS4 is meeting the WLAs for sediment.
2021 (15 years after the effective date of the TMDL), demonstrate compliance with 100% of the total drainage area served by the MS4 is meeting the WLAs for sediment.
The RWQCB identified City of Culver City, City of Inglewood, City of West Hollywood, City of Beverly Hills, Caltrans, City of Los Angeles, City of Santa Monica and County of Los Angeles as the agencies responsible for compliance with the Estuary Toxics TMDL. As City of Los Angeles is the largest city in the watershed, the Watershed Protection Division (WPD) of Bureau of Sanitation is the lead office for developing Monitoring and Implementation Plans for this TMDL.

Ballona Creek watershed agencies are also required to conduct a Toxicity Identification Evaluation (TIE) Study in the estuary to better understand the causes of sediment toxicity. As a result, Southern California Coastal Water Research Project (SCCWRP) and City of Los Angeles Environmental Monitoring Division spearheaded the study from 2007 to 2010. The findings from the study helped developing the Implementation Plan for the Estuary Toxics TMDL and were presented at the stakeholder workshop on September 21, 2010.
Over the past two years WPD together with other watershed agencies has conducted community stakeholder workshops, field trips, and one-to-one meetings for potential projects. Three stakeholder workshops were held on the following dates.
Workshop 1: Watershed Characterization, at City of Culver City Council Chambers, November 6, 2008
Workshop 2: Best Management Practices Strategies, at City of Los Angeles Hyperion Treatment Facility, March 3, 2009.
Workshop 3: Ballona Creek Estuary Toxics TMDL Implementation Plan, at City of Los Angeles Hyperion Treatment Facility, September 21, 2010.

Overall, workshops were attended by about two hundred stakeholders that included non-governmental organizations, neighborhood councils, private residents, universities, and state and local governments.

As a result, the Implementation Plan for the Estuary Toxics TMDL builds upon the expertise and knowledge of stakeholders, existing plans, and the latest scientific study. The plan focuses on sustainability, infiltration, use of and expansion of open space, multi-benefit, and watershed-wide approach.

Additional information on the Ballona Creek Watershed can be found under the Los Angeles Regional Water Quality Control Board’s Watershed Management Initiative Program.