Fifty dry cleaning businesses across the state have now switched from using toxic perchloroethylene (PERC) to a less toxic alternative since 2019. However, approximately 60 PERC-using businesses are still operating, prompting Ecology to redouble its efforts to eliminate the hazardous chemical from use.

This July 2019 document compiles the Cleanup Rule comments received from the public, Ecology staff and Office of the Attorney General from 2009 through 2018.

The Pollution Prevention Assistance program (PPA) helps businesses and organizations partner with local authorities to ensure they're effectively and efficiently meeting all their obligations.

Comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).

The Department of Ecology issued this Administrative Order (Order) requiring Department of Energy-Richland Operations Office and CH2M HILL Plateau Remediation Company to comply with WA codes and the Hanford RCRA permit.

Due to the continued immediate threat to human health and the environment posed by the instability of PUREX Tunnel 1, Ecology approves grouting of PUREX Tunnel 1 as an interim stabilization measure.

Emailed (form) comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).

Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing Ecology's approach to fish consumption standards in Washington state.

This amended order adds PUREX Tunnel 2 to the scope of Corrective Action 3 and provides additional time for USDOE-RL and CHPRC to complete Corrective Action 3.

Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing release of fish consumption rates technical support document [draft Version 2.0].

Comments received through October 26, 2012, on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0).

Meeting summary from Nov. 5, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.

Meeting summary from Nov. 27, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.

Former Ecology Director Ted Sturdevant's 2013 transmittal letter announcing release of final fish consumption rates technical support document (version 2.0).

A legislative report in response to requirements of Washington's environmental cleanup law, the Model Toxics Control Act.

This is Ecology's list of 2023 – 2025 Public Participation Grants awards.

Ecology's 2019 report to the legislature on redevelopment activities funded by the Brownfield Redevelopment Trust Fund (BRTF) Account.

Report to the legislature on activities funded by the Brownfield Redevelopment Trust Fund Account.

Download the slides for the 6/6/24 NE West Plains drinking water sampling results meeting

The EPA created this map to summarize where samples were taken without showing private well locations.