Stringfellow Acid Pits

Stringfellow Acid Pits. The Stringfellow Acid Pits were a major hazardous waste disposal facility operating in the Jurupa Valley community of Glen Avon from 1956 to 1972. The site became one of the most notorious cases of groundwater pollution in California and a pivotal example in the development of United States environmental law. Its legacy is deeply tied to the national Superfund program and ongoing debates over environmental justice.

History and background

The facility was established in 1956 by James B. Stringfellow on a site chosen for its perceived natural containment, situated above a bedrock basin in the Jurupa Mountains. It was licensed by the State of California and operated as a commercial disposal site for liquid industrial waste from numerous companies across Southern California, including major aerospace and manufacturing firms. For nearly two decades, millions of gallons of acidic chemical waste, solvents, and heavy metals were deposited into unlined evaporation ponds. The site's geology, once thought to be impermeable, proved faulty, and operations ceased in 1972 following community pressure and regulatory scrutiny. The closure coincided with a growing national awareness of pollution issues, highlighted by events like the Cuyahoga River fire and the passage of the Clean Water Act.

Environmental contamination

The primary environmental impact was the severe contamination of the local aquifer and Pyrite Creek, a tributary of the Santa Ana River. Leachate from the unlined pits, containing high concentrations of trichloroethylene (TCE), perchloroethylene (PCE), chloroform, and various acids and heavy metals, migrated into the groundwater. This plume threatened the Riverside Basin, a critical drinking water source for the region. Contaminated surface water runoff, particularly during heavy rains, also posed a direct threat to local waterways. The scale of contamination led the United States Environmental Protection Agency (EPA) to designate the location for the National Priorities List in 1983, making it one of the original Superfund sites.

Cleanup efforts and legal actions

Cleanup, managed by the EPA and the California Department of Toxic Substances Control, has been protracted and complex, involving multiple Record of Decisions. Initial efforts in the 1980s included constructing a leachate collection system and a water treatment plant to extract and treat contaminated groundwater. Major legal battles ensued, including a landmark 1998 ruling by the Supreme Court of the United States in United States v. Bestfoods, which clarified liability for parent corporations at Superfund sites. The federal government and the state pursued cost recovery from hundreds of potentially responsible parties, including corporations like McDonnell Douglas and Northrop Grumman. The case became a textbook example of litigation under the Comprehensive Environmental Response, Compensation, and Liability Act.

Impact on public health

The community of Glen Avon, a predominantly working-class area, experienced significant health concerns potentially linked to the site. Residents reported elevated rates of cancer, birth defects, and respiratory illnesses, though establishing definitive causal links was often challenging for epidemiologists. The contamination of local wells raised immediate alarms about drinking water safety, leading to the provision of alternative water supplies. The situation galvanized local activists and was instrumental in shaping the concept of environmental justice, highlighting the disproportionate siting of hazardous facilities in less affluent communities. Health studies and community outrage were central to the narrative presented during congressional hearings on the Superfund law.

Legacy and current status

The Stringfellow Acid Pits remain an active Superfund site, with groundwater extraction and treatment expected to continue for decades. It stands as a cautionary tale in the history of industrial waste management and a catalyst for stronger hazardous waste regulations, including the Resource Conservation and Recovery Act. The site's history is frequently cited in discussions on corporate responsibility and long-term environmental stewardship. While significant remediation has reduced immediate risks, the site symbolizes the enduring and costly legacy of improper waste disposal and the challenges of restoring contaminated ecosystems. It is monitored by the EPA Region 9 as part of the ongoing federal commitment to site cleanup.

Category:Superfund sites in California Category:History of Riverside County, California Category:Environmental disasters in the United States