Enumclaw Landfill

Enumclaw Landfill is a closed municipal solid waste landfill that is regulated under the  Minimum Functional Standards for Solid Waste Handling Chapter 173-304 Washington Administrative Code.

The landfill began accepting waste in the early 1950's. The landfill does not have an engineered composite liner beneath the solid waste, which is a requirement for new landfill units constructed after November 1985.

The landfill closed in two phases:

• In 1989, Phase I closure was completed.
• In 1993, Phase II closure was completed.

Post-closure care includes periodic monitoring and evaluation of groundwater and landfill gas to confirm the integrity of the landfill containment systems. Post-closure care is required until the landfill generates little or no leachate and landfill gas, landfill settlement has stabilized, and groundwater quality criteria have been satisfied. Reports and investigation reports/letters are located in the electronic document tab on the left side under Site Details-View Documents.

King County Solid Waste Division manages post-closure care for the landfill. 

Public Health – Seattle & King County (PHSKC) is the jurisdictional health department that permits the landfill. Landfill Reports are submitted to PHSKC pursuant to permit. For more information, please contact Jerome Cruz, Environmental Scientist III at 206-450-5833 or email jercruz@kingcounty.gov.

Ecology’s Solid Waste Management Program maintains regulatory standards and provides technical assistance to the jurisdictional health departments.

Permitted landfills are potentially subject to the state’s cleanup law, the Model Toxics Control Act (MTCA) if there has been a release of hazardous substances from the landfill. Ecology has not determined that there has been a release from the landfill that is subject to MTCA.

What's In My Neighborhood shows contamination cleanup sites in Washington state. Ecology encourages cleanup of these sites to protect the health of people, plants, and animals. Cleanups are projects that remove, treat, or contain potentially harmful substances.

To report an environmental problem or concern, any time, day or night, use the online reporting form. 

Counties: Island, King, Kitsap, San Juan, Skagit, Snohomish, and Whatcom

Email: nwroerts@ecy.wa.gov
Phone: 206-594-0000

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