Warning sign, Palos Verdes Peninsula, California

Warning sign, Palos Verdes Peninsula, California

Courtesy United States Environmental Protection Agency.

Chemical plants near the Palos Verdes Peninsula south of Los Angeles discharged contaminated sewage until the early 1970s. State agencies closed the local fishery for white croaker in 1990 due to health risks from eating fish contaminated with PCBs and pesticides.

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