# EPA Seeks Input on SW-846 Testing Revisions

The U.S. Environmental Protection Agency (EPA) issued a Request for Information (RFI) on September 14, 2026, soliciting stakeholder feedback on potential revisions to the SW-846 waste sampling and testing methods under the Resource Conservation and Recovery Act (RCRA). This RFI addresses key technical topics including waste sampling challenges, statistical methodologies, the Toxicity Characteristic Leaching Procedure (TCLP), and alternative leaching tests. Comments are due by November 13, 2026. These revisions could affect hazardous waste regulatory programs, site remediation efforts, and environmental compliance requirements, particularly for contractors and vendors involved in waste management and environmental services.

- **Why this matters:** Procurement professionals should anticipate updates to testing protocols that may alter contract specifications and compliance criteria for hazardous waste projects.
- Organizations engaged in environmental remediation and waste sampling should prepare to align their methodologies with forthcoming EPA guidance.
- This RFI signals potential changes that could impact state-level agencies such as California's Department of Toxic Substances Control (DTSC) and international frameworks like the Basel Convention.
- Contractors and consultants should consider submitting detailed technical input by the November 13 deadline to influence the revision process and position themselves for future contract opportunities.

**Jurisdictions:** federal
**Industries:** Environment
**Topics:** Regulatory Compliance
**Published:** September 18, 2026

### Government Entities
- U.S. Environmental Protection Agency (EPA)
- California Department of Toxic Substances Control (DTSC)
- California Board of Environmental Safety
- Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal (Basel Convention)

### Key Quotes
> This RFI might have important implications for the scope of the RCRA hazardous waste regulatory program and related matters, such as site remediation.
> — Aaron H. Goldberg, Attorney

### Sources
- [EPA Issues RFI on Changes to “SW-846” Waste Sampling and Testing](https://natlawreview.com/article/epa-seeks-input-potentially-important-changes-sw-846-waste-sampling-and-testing) - The National Law Review