The Ohio Environmental Protection Agency (OEPA) has found no evidence of drinking water contamination after it tested samples from several wells in Trumbull County, where five injection wells were thought to be the source of an oil waste spill earlier in the month. OEPA said it tested for inorganic compounds, volatile organic compounds and semi-volatile organic compounds and found no impact on private water systems. The Ohio Department of Natural Resources ordered five injection wells, operated by Kleese Development Associates, to shut down so it could determine the source of a spill that contaminated a nearby pond and killed wildlife (see Shale DailyApril 9). Although the wells remain shut-down and the investigation is ongoing, state regulators recently told NGI's Shale Daily that they now believe a salvage yard near the injection wells was the source of the oil waste.