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USG Interiors, LLC Puyallup Site Fact Sheet

DRAFT FOR PUBLIC COMMENT Comment on this draft
Publication number Date Published
19-09-116January 2019
VIEW NOW USG Interiors, LLC Puyallup Site Fact Sheet (Number of pages: 4) (Publication Size: 1098KB)
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Author(s) Sheila Coughlan
Description The Washington Department of Ecology (Ecology) invites you to comment on cleanup documents for the USG Interiors, LLC site in Puyallup. The site is located at 1005 River Road in Puyallup, Washington. 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. The manufacturing waste that consisted of “baghouse dust” and “shot”, was used as fill on the site to raise the grade. 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 1984, USG entered into an Agreed Order to assess groundwater contamination on the site. Between 1984 and 1985, USG removed contaminated soil, however in 2006, they conducted a site assessment and found soil and ground water with arsenic concentrations above the state Model Toxics Control Act (MTCA) cleanup levels. In 2007, USG conducted a Remedial Investigation and Feasibility Study (RI/FS). Now, Ecology and USG are proposing to implement the Cleanup Action Plan (CAP) to address the remaining contamination.
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

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Keywords Puyallup River, arsenic, Asarco, rock wool, In-Situ Chemical Oxidation (ISCO)
WEB PAGE USG Interiors, LLC Puyallup Site
CLEANUP SITE Cleanup Site ID: 3634

FACILITY SITE Facility Site ID: 1217


Public Participation Plan, USG Interiors, LLC, Puyallup, Washington