Islands Lagoon Site before cleanup
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Contaminants from historic mining practices in Idaho’s Coeur d’Alene Basin washed downstream and settled in soil and sediment along some Spokane River beaches.

The U.S. Environmental Protection Agency (EPA) conducted studies of the mining contaminants in the Coeur d’Alene Basin and began a wide-spread cleanup of the Bunker Hill Mining and Metallurgical Superfund Site. As part of the EPA study and studies Ecology conducted, 9 beaches in Washington were cleaned up, including Islands Lagoon. 

The site is on the south side of the Spokane River just downstream of the Trent Avenue Bridge.


The mining-related contaminants include arseniccadmiumlead and zinc.

Islands Lagoon Site after cleanup
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Ecology cleaned up the site in 2012. The Spokane River bank was stabilized and a protective cap was placed over metals-contaminated sediment to limit exposure to humans and wildlife.

Ecology will conduct a periodic review at least every five years following site cleanup, as required by the Model Toxics Control Act. The purposes of the review are to evaluate site conditions and ensure the cleanup continues to protect human health and the environment.


Map showing site location as Spokane County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 615198

Cleanup Site ID: 11590

Spokane, Spokane County

Status: Cleanup Complete-Active O&M/Monitoring   Get definitions of Status terminology

Brendan Dowling
Site Manager
(509) 329-3611

Erika Beresovoy
Public Involvement Coordinator
(509) 329-3546

Document Repositories:

Eastern Regional Office
N 4601 Monroe St
Spokane, 99205-1265

Argonne County Library
4322 N. Argonne
Spokane, 99206

Spokane Valley Public Library
12004 East Main
Spokane Valley, 99216