A Puget Sound Initiative site - Reaching the goal of a healthy, sustainable Puget Sound.

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Custom Plywood Mill, a waterfront site in Anacortes that was used as a mill and box factory, has undergone extensive clean-up under the state’s Puget Sound Initiative. Historical operation at the Custom Plywood Mill Site includes lumber and milling practices beginning in the early 1900s. Custom Plywood operated at the Site from 1984 until 1991, but all operations
ceased following a fire in 1992. Wood waste and chemical contaminants were found in upland soil, groundwater and sediment on the Site, which consists of upland, wetland, intertidal and subtidal in-water areas.

May 2014
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In March 2008, Ecology and the Potential Liable Person (PLP) - GBH Investments LLC - entered into an Agreed Order for site cleanup. The Agreed Order required the PLP to develop a Remedial Investigation and Feasibility Study (RI/FS) work plan to evaluate the nature extent of Site contamination, an RI/FS Report, and a draft Cleanup Action Plan (CAP) for both Upland and in-water remediation.

To date, two remedial actions have been completed at the Site:

Phase I, 2011: Interim remedial action was completed in the upland area. This phase removed contaminated soil and properly disposed of the soil off-site. A wetland mitigation area and vegetated buffer zone covering 12,000 square feet was created in the upland area. The remaining upland portion was hydro-seeded with grasses, and a stormwater bio-swale was built along the southern section.

Phase II, 2013: Interim remedial action was completed over 10 acres of inter-tidal water. Due to navigational hazards, marine pilings and construction debris were also removed. Marine sediment contaminated with dioxins/furans and wood waste were removed and disposed of off-site. Habitat-friendly shoreline was tripled in length by building a new aquatic spit, also known as a jetty extension, that prevents wave erosion. Wetlands restored in 2011 are now connected to Fidalgo Bay.

Since 2013, Ecology has monitored the beach, epibenthic zooplankton, forage fish spawning, nearshore fish, advanced eelgrass transplants, and wetland mitigation area (wetland, backshore, and upland buffer) of nearshore habitats under the Conservation Measures and Monitoring Plan (CMMP).

Phase III, underway in 2021: The final phase of cleanup began in July, 2021. Barges dredging and moving sediment may be visible through October, 2021, and monitoring work will continue over the coming year. 

To clean up dioxins/furans and surficial wood waste in over six acres of sub-tidal area, the selected contractor will:

  • Dredge 0.4 acres of sediment with more than 25 parts per trillion (ppt) of
    dioxins/furans, and dispose of that sediment off-site.
  • Place a thin-layer cap of two to four inches of sand over 1.6 acres of sub-tidal
    area within the eelgrass bed.
  • Place a thin-layer cap of four to eight inches of sad over 4.4 acres of
    sub-tidal area without eelgrass.
  • Follow-up monitoring over a five-year period, both in-water and in the wetland area.


Additional electronic documents pertaining to the site can be found under the "View Electronic
Documents" link located in the right column. You can also review site documents at the Anacortes Public Library or Department of Ecology Headquarters.

March 7 - April 5,  2019 Public Comment Period Documents

Public Involvement Materials

Technical Documents


Map showing site location as Skagit County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 2685

Cleanup Site ID: 4533

Anacortes, Skagit County

Status: Cleanup Started   Get definitions of Status terminology

Hun Seak Park
Site Manager
(360) 407-7189

Document Repositories:

300 Desmond Dr SE
Lacey, 98503