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Shelton Laundry and Cleaners Groundwater Monitoring Results, October 2021: Data Summary Report

Publication number Date Published
23-03-022May 2023
VIEW NOW Shelton Laundry and Cleaners Groundwater Monitoring Results, October 2021: Data Summary Report (Number of pages: 18) (Publication Size: 663KB)

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Author(s) Carnes, J.
Description In October 2021, the Department of Ecology collected groundwater samples from three shallow monitoring wells at the Shelton Laundry and Cleaners site. The purpose was to monitor tetrachloroethylene (PCE) near well 4W where a spill of dry-cleaning chemicals is reported to have occurred in 1993.

PCE was detected in the primary sample from well 4W at a concentration of 6.45 ug/L, above the MTCA cleanup level of 5 ug/L. Ecology collected replicate samples from well 4W to compare results of samples collected with a mechanical bladder pump to samples collected with a peristaltic pump. The concentrations of PCE, TCE, and cis-1,2-DCE were higher in the samples collected from well 4W with the peristaltic pump than in samples collected with the mechanical bladder pump.

Ecology will continue to monitor the site’s groundwater until PCE concentrations in well 4W are consistently below the cleanup level.

To see results for groundwater monitoring at this site during 2003-2020, click on “Web Page” below.
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

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Contact Jacob Carnes at 360-407-6764 or
Keywords Groundwater monitoring well, groundwater toxics, HUC 17110019, Tetrachloroethene, PCE, toxics monitoring, toxic chemicals, tetrachloroethylene, groundwater, groundwater contamination, dry cleaner
WEB PAGE Shelton Laundry groundwater monitoring
WATERSHED Water Resource Inventory Area 14 Kennedy-Goldsborough
DATA Environmental Information Management (EIM) #PMART001