Public Comment Form

USG Interiors, LLC Puyallup Site Comment Period Opens January 7, 2019

Please note that this comment form is for the purpose of submitting a comment to the Washington State Department of Ecology. Contact information is necessary if you want to receive future notices or responses related to this topic.

The Washington Department of Ecology (Ecology) invites you to comment on cleanup documents for the USG Interiors, LLC site in Puyallup (USG). Prior to 1971, the USG facility used slag from the former Tacoma Asarco copper smelter as a raw material to produce rock wool, a mineral fiber insulation.  In the 1980s, USG learned that the slag and waste contained high concentrations of arsenic, and had contaminated soil, sediments in the Puyallup River, and groundwater. 

In 2007, USG conducted a Remedial Investigation (RI) and Feasibility Study (FS). Now, Ecology and USG are proposing to implement the Cleanup Action Plan (CAP) to address the remaining contamination.

The following documents are available for public comment:

RI and FS that describes the contamination and compares cleanup options.
CAP that outlines the cleanup action selected by Ecology.
Agreed Order DE #11098 that requires USG to implement and maintain the recommended cleanup actions.
State Environmental Policy Act (SEPA) Checklist and Determination of Non-Significance that describes the potential environmental impacts of the cleanup work.

To review the Fact Sheet, please view the following link:




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Comments are due by February 5, 2019
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