EPA Superfund Site

DWYER PROPERTY GROUND WATER PLUME

MD | EPA ID MDD985366756

About this site’s exposure pathways: As of May 2025, there is insufficient information available to determine the site-wide Human Exposure Control status at the Dwyer Property Ground Water Plume Site. Heavy metals, semivolatile organic compounds (SVOCs) and asbestos have been found in shallow soils, and there is the potential for munitions and explosives of concern (MEC) present at the Site. The primary contaminants in groundwater include trichloroethene (TCE), tetrachloroethene (PCE), and carbon tetrachloride. Little Elk Creek appears to be the ultimate receptor of TCE plumes migrating from the Site. A Remedial Investigation/Feasibility Study (RI/FS) is currently being performed. EPA approved the Potentially Responsible Party's (PRP's) work plan for the RI sampling in September 2018. Phases 1-5 field work consisting of soils sampling at 213 potential areas of interest (PAOIs) and installations of 40+ monitoring wells and sitewide groundwater sampling has been completed. The Phase 1-5 Soils Report on PAOIs is currently under review. EPA will evaluate all the data and reevaluate the Human Exposure status of the Site in 2026 and 2027.

EPA expects to have sufficient information by September 2028 to make a Human Exposure evaluation. Until such time, surface water in Little Elk Creek near the Route 279 bridge should not be used for drinking water. No trespassing is allowed on the Site.