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Comment Period

Sumner National Auto Parts

Delisting from the Hazardous Sites List

Sept. 22, 2022 - Oct. 23, 2022, 11:59 p.m.

Ecology proposes removing the Sumner National Auto Parts cleanup site from the Hazardous Sites list because the site has been cleaned up. We invite your comment on the proposal.

The Sumner National Auto Parts site was an auto supply store, and an engine rebuild and metal machine shop. Leaks of hazardous chemicals into the soil likely caused contamination at the site.

We ranked the site's relative risk to human health and the environment based on contamination and the location of the site. When a cleanup site is ranked, we put the site on the state's Hazardous Sites List

Contaminated soil was excavated and removed from the site. After the contaminated soil was removed, tests confirmed that contaminant concentrations were below state cleanup levels.

Groundwater was monitored and tests showed that contaminants were not present in groundwater or present at concentrations below state cleanup levels. 

The cleanup is effective in protecting the health of people and the environment. We determined no further cleanup action is required. 

A site may be removed from the Hazardous Sites List only if the site is cleaned up to the standards set in Washington's cleanup law, the Model Toxics Control Act. No long-term monitoring will be required at the site to ensure the cleanup is adequate to protect the public and the environment. 

We hold a public comment period for any site we propose to remove from this list.

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Comment online

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Comment by mail

Tim Mullin
Washington Department of Ecology
P.O. Box 47775
Olympia, WA 98504-7775
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Tim Mullin
Cleanup Project Manager

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