BACKGROUND
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 |
STATUS
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, 2019: Final phase of remedial action for approximately 10.4 acres of subtidal sediments; 4.7 acres of those sediments support eelgrass. The planned Phase III remedial action, as proposed, consists of:
- Placement of a thin layer cap (between 2 to 8-inch thickness) over approximately 10 acres of subtidal sediments with dioxin concentration greater than 10 nanograms
per kilogram (ppt) TEC (but less than 25 ppt)
- Dredging and backfilling 0.46 acres of sediment in excess of 25 ppt dioxins and wood
waste accumulation greater than 1-foot below the mud line within eelgrass beds.
- Eelgrass mitigation using advanced mitigation plantings from Phase II along with additional mitigation efforts to compensate for the loss of eelgrass bed due to dredging (0.38 acres out of 0.46 acre dredge footprint supports eelgrass)
SITE DOCUMENTS
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
