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Shelton Laundry groundwater monitoring

We are monitoring groundwater at the Shelton Laundry & Cleaners in Mason County, where legacy chemicals from the operation are still found in the shallow aquifer. We measure volatile organic compounds from monitoring wells to help determine what measures need to be taken to imporve water quality and inform when groundwater standards are met.

Sampling for legacy dry-cleaning chemicals

Aeriel view of Shelton laundry site with outline square showing the extent of contamination.

Sampling area extent in Shelton, WA.

We collect groundwater samples every 18 months from select wells to monitor concentrations of tetrachloroethene (PCE) that continue to exceed the state Model Toxics Control Act cleanup level. The groundwater data will be used to help determine if this site can be removed from the Confirmed and Suspected Contaminated Sites list.
  • Facility/ Site ID number 65663568
  • Cleanup Site ID number 4679
  • Environmental Information Management database Study ID: PMART001