Spokane River Metals Islands Lagoon

Facility Site ID: 615198 Cleanup Site ID: 11590

Public Comment Period September 22, 2022-October 21, 2022

Ecology invites you to review and comment on the draft Periodic Review Report for the Spokane River Shoreline Metals sites. We complete a periodic review about every five years at sites where some contamination remains after cleanup. The purpose of the review is to make sure the cleanup still protects human health and the environment.

The cleanups continue to protect human health and the environment from the capped contaminated sediments. However, contaminant concentrations have increased in some cases and new contaminated sediments have been deposited on the caps. This likely means upstream sources are continuing to impact the river and could pose a risk to human health and the environment if they are not controlled.

We will continue monitoring to ensure that the sites continue to be safe for human health and the environment. A monitoring study evaluating sediments entering the site at the Washington-Idaho border would help assess the potential for recontamination.

Submit comments by October 21 to:

Brendan Dowling, site manager
Online comment form
Email: brendan.dowling@ecy.wa.gov
Postal mail: 4601 N. Monroe St., Spokane, WA 99205

Next steps

Ecology will review all comments received during the comment period and update the periodic review if needed. If no significant changes are made, the periodic review will become final. If significant changes are made, an additional public comment period will be held. We will hold an online public meeting if 10 or more people request one.

Site Background

Islands Lagoon Site before cleanup
Islands Lagoon Site before cleanup
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, nine 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.

Contamination

The mining-related contaminants include arseniccadmiumlead, and zinc.

Cleanup

Islands Lagoon Site after cleanup
Islands Lagoon Site after cleanup
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 about every five years following site cleanup. The purposes of the review are to evaluate site conditions when contaminants are capped and ensure the cleanup continues to protect human health and the environment.
Public Information 1
Document Title Document Date Document Type
Spokane River Metals Sites Four Beaches Proposed for Cleanup Design Documents, SEPA, Substantive Permit Requirements 5/17/2012 Fact Sheet\Public Notices
State Environmental Policy Act 2
Document Title Document Date Document Type
Spokane River Metals Islands Lagoon DNS 5/17/2012 SEPA Documents
Spokane River Metals Islands Lagoon SEPA Checklist May 2012 3/8/2012 SEPA Documents
Technical Reports 6
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Eastern Regional Office
    N 4601 Monroe St
    Spokane, 99205-1265
    Please schedule an appointment to view print documents at this location.
  • Argonne County Library
    4322 N. Argonne
    Spokane, 99206
    This location may only have print documents available during open comment periods.
  • Spokane Valley Public Library
    12004 East Main
    Spokane Valley, 99216
    This location may only have print documents available during open comment periods.

Contaminants 1

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Metals - Metals - Other C
S
Suspected
C
Confirmed Above Cleanup Levels
B
Below Cleanup Levels
RA
Remediated-Above
RB
Remediated-Below
R
Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.