Site Register & contaminated sites lists

On this page you can find our:

  • Site Register — Information about formal and independent cleanups, including opportunities for public comment and attending public meetings, and policy updates.
  • Hazardous Sites List — Updates on sites that have been assessed and ranked, as well as National Priorities List sites.
  • Cleanup and Tank Search — A database with a variety of customizable reports about cleanup and underground storage tank sites.

Site Register

The Site Register is a newsletter we publish about every two weeks. It contains information about cleanup activities, public meetings, public comment periods, and policy and rule changes.

We aim to provide timely information about contaminated site cleanups and opportunities for you to participate in that process. We use the Site Register as one way to meet this goal.

For more information contact Sarah Kellington (360-407-7466, or read the Site Register Focus Sheet.

Hazardous Sites List

The Hazardous Sites List contains about 2,000 sites that we have assessed and ranked using the Washington Ranking Method, as well as National Priorities List sites. Twice a year, we publish a list of additions, removals, and changes in site status. This update goes out as a special edition of the Site Register. Every two years, we publish the latest list in the Model Toxics Control Accounts Biennial Report of Expenditures.

The Hazardous Sites List is required by Washington state’s Cleanup Rule, WAC 173-340-330.

Find data with Cleanup and Tank Search

Cleanup and Tank Search is intended to help you quickly retrieve site information, reports, and data. You can search for a specific site or find all the sites that meet certain criteria, like all the sites in a county or with a particular contaminant. You can also share your results and export them to excel, csv, json, and xml formats.

Cleanup site information

The All Statewide Cleanup Sites list includes all current and former cleanup sites in Washington. It provides site information at-a-glance, as well as links to the downloadable Cleanup Site Details Report, available public documents, and cleanup webpage for each site. You can filter by county, contaminant, site status, and whether or not the site is in the Voluntary Cleanup Program or has institutional controls.

There are also pre-filtered subsets of the statewide list available:

  • Brownfields sites list
    Brownfields are abandoned properties where actual or suspected contamination makes redevelopment difficult.
  • Confirmed and Suspected Contaminated Sites List
    All sites that are undergoing cleanup, or awaiting further investigation or cleanup.
  • Environmental Covenants Registry
    Some sites have environmental covenants or deed restrictions that limit certain uses of the property to protect people from exposure or maintain the integrity of the cleanup. For example, a covenant might prohibit drilling a well or using the property for homes. You can filter this list by type of restriction and legal mechanism.
  • Leaking Underground Storage Tanks List
    Information on underground storage tank (UST) facilities that have leaked.
  • No Further Action sites list
    These sites were on the Confirmed and Suspected Contaminated Sites List and have received a No Further Action (NFA) decision.

If you only want the Cleanup Site Detail Report pdf for a site, you can search for it directly with the Cleanup Site Details Report search.

Underground storage tank information

The Regulated USTs, Active & Inactive Facilities list provides information about operational and closed Underground Storage Tanks (USTs). You can search by ID, tag number, or site name, and filter by tank status, stored substance, or county. Each result includes a link to the UST System Summary Report.

If you only want the Underground Storage System Summary pdf, you can search for it directly with the Underground Storage Tank Details Report search tool. Results from this search cannot be exported.

Voluntary Cleanup Program (VCP) wait lists

  • VCP Wait List (Existing)
    This waitlist is for sites that have already been working with VCP and are waiting for a new cleanup project manager.
  • VCP Wait List (New)
    This waitlist is for new applicants to the VCP who have not yet been assigned a cleanup project manager.