Oakland Bay and Shelton Harbor Sediments

Oakland Bay and Shelton Harbor Sediments Study Site
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SHELTON HARBOR CLEANUP

In the summer of 2017, we made a formal legal agreement, called an agreed order, with the Simpson Timber Company (Simpson) to begin cleanup in Shelton Harbor. You can click the link below to read the document. The new agreed order requires Simpson to:

  • Describe the types and extent of contamination in Shelton Harbor through a remedial investigation.
  • Develop and carry out a partial cleanup plan called an interim action.
  • Evaluate cleanup options through a feasibility study.
  • Choose cleanup methods through a draft cleanup plan.


WHY CLEANUP?

Extensive research into sediment contamination in Oakland Bay showed that contamination was most concentrated in Shelton Harbor. To address that contamination, we have defined a portion of the bay, the Shelton Harbor Sediment Cleanup Unit.

The Oakland Bay Sediment Investigation, detailed below, showed contamination from dioxin, excessive wood waste, and cPAHs (carcinogenic polycyclic aromatic hydrocarbons) in the harbor. The highest concentrations of these contaminants are in Shelton Harbor, at the western end of Oakland Bay.

Through this cleanup work, Ecology has an opportunity to contribute to the success of a planned habitat restoration project in Shelton Harbor. We plan to dovetail restoration with the first stages of cleanup work in order to:

·       Make both projects more efficient.

·       Ensure that the restoration project is built on a foundation that meets state cleanup standards.


SEDIMENT STUDY

In 2008 and 2009, with support from the Puget Sound Initiative, Ecology’s Toxics Cleanup Program investigated the health of the sediments in Oakland Bay. Sediment contamination can impact plants and animals that live in or around the contaminated sediment. Some contaminants can have broader impacts when they move through the food chain.

Ecology chose Oakland Bay because Shelton Harbor has a history of heavy industrial use and previous studies showed evidence of contamination. In addition, Oakland Bay is one of the most productive shellfish growing areas in the country.

Industrial uses of Oakland Bay resulted in sediment contamination in Shelton Harbor and surrounding areas. Chemicals, wood waste, and waste water from timber and wood product manufacturing industries have been discharged into Oakland Bay.

 

A report on the Oakland Bay Sediment Characterization Study was released for public review and comment in December 2010. The full text of the report is available by clicking the links below. The Sediment Investigation Report contains information about:

·        Location and amount of chemicals and wood waste in the sediment.

·        Amount of sediment movement and deposition in Shelton Harbor and Oakland Bay.

·        Potential effects of sediment contamination on the health of creatures living on or in the sediment.

·        Possible sources of dioxin found in sediment.

 

IS IT SAFE TO EAT SHELLFISH FROM OAKLAND BAY?

According to a health consultation from the Department of Health, even people who eat large amounts of shellfish from Oakland bay are very unlikely to see harmful health effects from the shellfish. The health assessment also determined that touching, breathing in, or accidentally eating contaminated sediment from Oakland bay is very unlikely to harm people’s health.

Read a fact sheet describing the health consultation, or the full DOH health consultation report.

 


SEDIMENT STUDY DOCUMENTS

March 23, 2011

December 2010

2008

 


OTHER WORK IN OAKLAND BAY

Ecology's Water Quality Program is currently developing a plan to address water quality problems in Oakland Bay, including fecal coliform bacteria.  For more information about this work visit http://www.ecy.wa.gov/programs/wq/tmdl/oakland_bay/index.html.
 

The Oakland Bay Clean Water District is a multi-agency coordinated effort to restore the health of Oakland Bay.  To learn more, visit: The Oakland Bay Clean Water District web site.

Other documents about Oakland Bay sediments 

 

 


RELATED CONTACTS

For information about human health, contact:

Len O'Garro
Washington Department of Health
Email: Lenford.O'Garro@doh.wa.gov
Phone: 360-236-3376



ADDITIONAL RESOURCES

 

Map showing site location as Mason County, WA SITE INFORMATION

Map

View Electronic Documents

Site Summary Report

Facility Site ID: # 18051

Cleanup Site ID: 13007

Location:
Shelton, Mason County

Status: Cleanup Started   Get definitions of Status terminology

Contacts:
Joyce Mercuri
Project Manager
(360) 407-6260

Megan MacClellan
Public Involvement Coordinator
(360) 407-0067


Document Repositories:

Southwest Regional Office
300 Desmond Dr SE
Lacey, 98503-1274
(360)407-6365

Shelton Library
710 W. Alder St.
Shelton, 98584
(360)426-1362