EPA has been asked to investigate tetrachloroethylene (PERC) contamination in Hyattsville (Chillum), Maryland and Washington, DC. PERC contamination was discovered in 2001 during an on-going investigation of a gasoline-products release from a service station located in Hyattsville near the Chillum Perc property. The site under investigation includes a dry cleaning facility and a residential community. The dry cleaning facility is located in Maryland and is immediately adjacent to the Washington, DC border. Groundwater flows from Maryland into Washington, DC, and one or more plumes of groundwater containing PERC may be present beneath the local residential community.
A. During this reporting period, EPA and START contractors began review of analytical data from the samples collected in July, August, and September, 2003. No field activities were conducted during this reporting period.
B. START contractors have procured the services of a subcontractor to survey the six small-diameter monitoring wells installed in July and August 2003.
C. EPA has begun preparation of resident letters summarizing analytical results of samples colleted in July through September, 2003.
A. Monitoring well surveying activities are tentatively scheduled for the week of December 15, 2003.
B. EPA anticipates notifying residents of analytical results for samples collected in July through September, 2003.
C. Attend public meetings and prepare presentations of completed, on-going, and planned activities in response to the PERC release.
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