The U.S. Environmental Protection Agency has proposed a cleanup plan for the United Heckathorn Superfund site, advancing a long-running federal response at the former pesticide and herbicide formulation facility in Richmond, California. The proposal now enters the formal comment phase that determines the scope, schedule, and remedies the agency will ultimately require.

What does the proposed plan change?

Under the Superfund process, a proposed plan sets out the EPA's preferred alternative for site remediation, with a rationale, comparative analysis of other options, and a cost estimate.

The agency's release triggers a public comment period, typically 30 to 60 days, during which affected communities, local governments, and the responsible parties may submit written comments or request a public meeting.

A final Record of Decision follows only after the agency reviews the record, addresses significant comments, and selects the remedy. Until that document is signed, no remedial action at the site is locked in.

What is United Heckathorn?

United Heckathorn operated as a pesticide and herbicide formulation facility in Richmond, California, on the San Francisco Bay. Operations through the mid-20th century involved the handling, mixing, and repackaging of agricultural chemicals. Residual contamination in soils, groundwater, and sediments triggered federal listing under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).

The site adjoins industrial and residential areas of Richmond and sits within a region that has been a focal point for federal hazardous-substance response since the 1980s. EPA Region 9 has led prior investigations delineating the extent of contamination and identifying potentially responsible parties.

The proposed plan is the formal mechanism through which the agency now spells out how it intends to address that contamination.

How does this connect to the waste and recycling sector?

Hazardous-substance cleanups at Superfund sites generate sizable streams of contaminated soil, debris, and water that flow through licensed treatment, storage, and disposal facilities (TSDFs), thermal desorption operators, and permitted landfills.

The remedies selected for a site like United Heckathorn shape multi-year procurement opportunities for contractors licensed to handle pesticide- and dioxin-contaminated media, and the volume of material can move regional pricing for hazardous waste disposal.

For waste brokers and TSDFs in California and the broader Pacific region, the agency remedy decision will determine how much contaminated material enters the disposal market, under what treatment standards, and over what construction window.

The cost of full remediation at a CERCLA site typically runs into the tens of millions of dollars and is paid either by responsible parties through consent decrees or by the Superfund trust fund, with eventual cost recovery from polluters.

Contract awards for design, excavation, transport, and disposal flow through the federal procurement system, with bid opportunities posted on SAM.gov and the EPA's acquisition portal. Pacific-region TSDFs and thermal desorption operators with pesticide-handling capability are the most likely bidders, given the regulatory and logistical complexity of cross-state transport for media with dioxin contamination.

What happens next?

The near-term milestone is the close of the public comment period on the proposed plan. After the EPA reviews comments, the agency will issue a final plan and a Record of Decision. From there, the schedule for remedial design, procurement, and on-site construction is set — typically a multi-year horizon for a site of this size and complexity.

The Record of Decision is the regulatory milestone that decides what happens next on the ground.