Companies to pay for groundwater cleanup at Superfund site in Montrose, Calif. Following settlement with Department of Justice, EPA, and California Department of Toxic Substances Control

October 5, 2021 – On September 30, 2021, three settlement agreements were approved by the United States District Court for the Central District of California. Under the agreements, Montrose Chemical Corporation of California, Bayer CropScience Inc., TFCF America Inc. and Stauffer Management Company LLC have agreed to pay $ 77.6 million for the cleanup of contaminated groundwater at the Montrose Chemical Corp sites. Superfund and Del Amo Superfund in Los Angeles County, California. The companies will also investigate the potential contamination of the historic stormwater path leading from the Montrose Superfund site, south of Torrance Boulevard. Another company, JCI Jones Chemicals Inc. will help clean up the groundwater.

The regulations not only provide for cleanup and investigation, but also collectively resolve active litigation in a case pending for more than 30 years under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA, commonly called Superfund). From 1947 to 1982, Montrose operated the largest manufacturing plant for the pesticide DDT (dichloro-diphenyl-trichloroethane) in the United States.

“These settlements will improve the quality of groundwater in Los Angeles County by forcing responsible polluters to clean up two large parts of the Montrose Superfund site and investigate the historic stormwater path,” he added. said Deputy Attorney General Todd Kim of the Department of Justice’s Environment and Natural Resources Division. “These regulations demonstrate the ongoing efforts of the Department of Justice and the EPA, in conjunction with our state partners, to ensure that polluters, not the American public, pay for the investigation and cleanup of Superfund sites. “

“EPA continues its commitment to protect community health and drinking water sources by cleaning up groundwater affected by the Montrose and Del Amo Superfund sites,” said Director Enrique Manzanilla of the Pacific Southwest Superfund and EPA Emergency Management. “These colonies ensure the long-term operation of the clean-up of the Montrose Superfund site so that it is not a continuous source of contamination.”

“For years the people of this region have been affected by the contamination of these old pesticide and rubber manufacturing sites, and these settlements bring them one step closer to fairness. said Director Meredith Williams of the California Department of Toxic Substances Control (DTSC). “We stand alongside the people who live, work and play near this contamination, and we will continue our efforts to make polluters pay for their actions.”

The regulations require companies to pay for and implement cleanup actions and conduct an investigation under federal and state government oversight. The companies will also reimburse the EPA over $ 8 million and the California DTSC over $ 450,000 for costs already incurred.

Each regulation addresses a specific activity to deal with site cleaning:

  • The first regulation requires the pumping and treatment of groundwater in accordance with federal and state cleaning standards, and then reinjection of the treated water into the ground.
  • The second regulation will entail a soil treatment to treat historical discharges which are a continuous source of groundwater contamination. Air monitoring will be carried out to ensure that there are no impacts on the surrounding community.
  • The third regulation requires an investigation of potential contaminant releases into the historic stormwater path leading from the Montrose Superfund site, south of Torrance Boulevard. This rule will be used to determine if there is contamination in the trail that may require cleaning.

The settlements are commemorated in three consent decrees.

For more information on these Superfund sites, visit the Del Amo Los Angeles, CA Superfund Site Profile web page at and the Montrose Chemical Corp. site profile web page. Torrance, CA Superfund at

Learn more about EPAs Southwest Pacific Region.

Previous Oregon FBI Tech Tuesday: Digital Defense Against Dating Scams Targeting LGBTQ + Community
Next Twitter improves quality of live videos by removing feature

No Comment

Leave a reply

Your email address will not be published.