Dangerous Waste Permits

Contained-In Determination Request

How to request a contained-in determination for contaminated media:

Submit your written request for a contained-in determination, by letter or by email. Address your request to the Section Supervisor or to delegated staff of the Hazardous Waste and Toxics Reduction Program at the appropriate Regional Office of the Department of Ecology (Ecology). Depending on Ecology’s workload and the complexity of your request, it may require two weeks to review and respond to your request. It is important that you plan your cleanup activities with this timeline in mind.

Your request should be concise and include the following required information:

  • The specific location and address of the site with your contaminated media.
  • The names, mailing addresses, and contact information for the property owners of the site. 
  • The names, mailing addresses, and contact information of environmental staff assisting with the cleanup action at the site. 
  • The RCRA Site Identification Number, if one is assigned to the site. A RCRA Site Identification Number (also known as an EPA/RCRA Site ID number) is required for certain facilities managing wastes under the Resource Conservation and Recovery Act (RCRA).
  • Ecology’s Facility/Site Database Number, if one is assigned to the site.
  • Name and contact information of the Ecology site manager overseeing cleanup actions, if one is assigned.
  • A description of the type of cleanup action (for example, independent, voluntary, or under an order issued under the Model Toxics Control Act (MTCA) Cleanup Regulation) generating your contaminated media.
  • Your schedule to excavate or remove your contaminated media. If you have already excavated your soil, give the amount of time that has elapsed since excavation. 
  • A description of the listed waste codes and the type of your environmental media, and include the amount (in volume or weight).
  • A description of the source of contaminants at the site. Include types of businesses, products and wastes used or managed, and the dates when contaminants may have been released.
  • A discussion of whether the contaminated media designates as a federal characteristic waste (WAC 173-303-090) or a state-only criteria waste (WAC 173-303-100). Provide any analytical results that support this discussion.
  • A map of the site showing the location of buildings, sampling locations with sample identification numbers, groundwater monitoring wells, and surface water bodies.  Show the location of the excavated soil on your site map. If you have not yet excavated the soil, show the location of sources of contamination.
  • A description of the sampling techniques and the type of analytical methods you used. Include the number, locations, and depths of samples. You should use all reasonable analytical methods to obtain practical quantitation limits (PQLs) below the applicable MTCA cleanup levels and Universal Treatment Standards (UTSs). Include a short discussion on how your analytical data is representative of the level of contamination in your media.
  • Proposed procedures for managing and disposing of the media. Include the name and location of proposed permitted disposal facilities that would receive your contaminated media if Ecology approved your request for a contained-in determination. Please include contact information for person(s) at these facilities.
  • A table with analytical results for the contaminated media. Include sample identification numbers. Include applicable MTCA cleanup levels and applicable Universal Treatment Standards (UTS) for all regulated hazardous constituents and any possible breakdown products in your contaminated media.
  • Copies of original analytical reports and data quality assurance reports, including method detection limits (MDLs) and PQLs.

For information on the Universal Treatment Standards, review the federal regulations at:

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