When detected, were there different kinds of VOCs in samples from domestic and public wells?
Forty-four of the 55 volatile organic compounds (VOCs) analyzed for in this assessment were detected in samples from domestic and (or) public wells at concentrations equal to or greater than 0.2 microgram per liter (μg/L). These VOCs were assigned to the following “groups” based on their primary use (or origin): gasoline hydrocarbons, gasoline oxygenates, organic synthesis compounds, refrigerants, solvents, and trihalomethanes (THMs). The 15 most frequently detected VOCs in domestic well samples represented all VOC groups except organic synthesis compounds. VOCs in public well samples were predominantly THMs, solvents, and gasoline oxygenates, primarily methyl tert-butyl ether (MTBE). For more information, refer to Appendixes 8 and 10.
