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

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The March Point Landfill site, sometimes called the Whitmarsh Landfill, operated from 1950 until 1973, first as an unregulated public dump and later as a county disposal area. Decades of household, commercial, and industrial solid wastes were discarded into a natural lagoon on the shore of Padilla Bay. From the late 1980s to mid-2011, a sawmill operated at the site. Wood waste up to ten feet thick accumulated over large portions of the landfill.

A formal agreement in 2020 named Shell Oil Co., Texaco Inc., and Skagit County as the parties responsible for the cost of the cleanup.

In 2017, Ecology completed a remedial investigation and feasibility study, in partnership with the parties listed above. These studies describe the nature and extent of contamination at the site, evaluate risks the contamination poses to human health and the environment, and look for cleanup options.


In early 2020, we invited comments on several cleanup planning documents for the March Point Landfill site.

Those draft documents included a cleanup action plan, a consent decree that legally binds the potentially liable parties to the work described in the cleanup action plan, a public participation plan, and a State Environmental Protection Act (SEPA) checklist and determination.

Interested in more information?
You can find these documents by clicking the “View Electronic Documents” link on the right, you can read a fact sheet that summarizes the public comment period, and you can read Ecology's responses to the comments we received in our responsiveness summary.

Next steps
After finalizing the documents listed above, the project team will develop an engineering design report, which outlines specific details of how cleanup work will take place on the ground. We anticipate fieldwork will begin in 2021.


The remedial investigation showed that historic land use led to soil and groundwater contamination with:

Total petroleum hydrocarbons (TPHs)
Semi-volatile organic compounds (SVOCs)
Polychlorinated biphenyls (PCBs)
Methane gas


The draft Cleanup Action Plan is designed to prevent exposure to contamination that has the potential to harm human health and the environment.

After evaluating several cleanup options through the Feasibility Study, we have decided to move forward with Alternative 3, which was presented as the preferred alternative in the Feasibility Study.

This includes:

  • Removing a portion of the existing landfill to accommodate right-of-way.
  • Excavating and re-distributing some of the existing landfill cap and some existing solid waste in preparation for grading the site.
  • Grading the site to allow for stormwater runoff.
  • Constructing an impermeable cap over the site, made of layers of geotextile and bentonite clay. This prevents water from filtering through the solid waste in the landfill and carrying contaminants into Padilla Bay.
  • Installing an enhanced geotextile membrane where the cap will come into contact with marine water.
  • Placing three feet of gravel and soils over the geotextile membrane.
  • Installing a system to collect landfill gas and passively vent it to the surface.
  • Installing stormwater control and surface drainage systems.
  • Restoring habitat along the site’s shoreline.
  • During construction, wastewater and erosion will be managed in accordance with regulatory requirements.  Disturbance of the nearby heron rookery will also be limited through techniques like noise reduction.


A selection of documents are listed below.  Additional electronic documents pertaining to the site can be found under the "View Electronic Documents" link located in the right column.


Map showing site location as Skagit County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 2662

Cleanup Site ID: 304

Anacortes, Skagit County

Status: Cleanup Started   Get definitions of Status terminology

Arianne Fernandez
Project Manager
(360) 407-7209

Document Repositories:

300 Desmond Dr SE
Lacey, 98503

Anacortes Public Library
1220 10th Street
Anacortes, 98221

Padilla Bay Reserve
10441 Bayview Edison Rd
Mount Vernon, 98273

Skagit County Public Works
1800 Continental Pl
Mount Vernon, 98273