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Chris Sitaram, DEQ Brownfields Program Manager, acted as Task Leader, and he directed a crew of six technicians at the site. They followed EPA guidelines while collecting the samples to assure that the test results would be accurate. This involved testing for organic vapors before opening the wells, measuring the water level, purging the wells of water, collecting the samples, logging the data, refrigerating the samples and frequently decontaminating the equipment.
The DEQ will send the samples to the Office of Analytical Services and Quality Assurance, an Annapolis, Md. EPA Laboratory to be tested. The laboratory will measure the samples for levels of volatile organic compounds (VOCs). The laboratory will compare the results to the federal maximum contaminant levels (MCL) stated in the Safe Drinking Water Act and the National Primary Drinking Water Regulations.
Sitaram, an environmental engineer with a background in geology, said that the Joyce Study was helpful and those results will be used in the summary he will write for the DEQ. Only one of the ten wells, the Flint Hill Pentecostal Church well, tested by Joyce Engineering was retested. However, he said the Brownfields Program would have conducted sampling and testing free of charge if the county had requested it. The results combined, however, will provide a more comprehensive picture of the situation than if DEQ had conducted the testing alone.
Moderate contamination still exists at one of the five monitoring wells tested by Joyce Engineering. Other monitoring wells showed a significant decrease in contamination. No wells at private residences had any detectable level of.VOCs.
NET Assessment Report in June 1994 showed that the Flint Hill Pentecostal Church well was the only residential drinking water well that was contaminated with VOCs. The level of pollution then was less than 2 ug/1 for PCE and TCA, but the TCE level was 97 ug/1. The levels in May were only slightly less.
After pollution was discovered, Aileen, Inc., and later the county, provided drinking water to the church.
The EPA drinking water standard for Trichlorethane (TCA) is 200 ug/1, for Tetrachloroethene (TCE) the limit 5.0 ug/1 and for
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