KENAI (AP) -- The Alaska Department of Environmental Conservation has ordered the Anchorage-based company that owns a closed Sterling gas station to begin work to identify the extent of soil and groundwater contamination caused by a leaking underground fuel tank.
The contamination soil and groundwater were discovered near the Sterling Zipmart in January.
Gilfilian Engineering & Environmental Testing Inc. notified DEC on Jan. 11 of the presence of large amounts of gasoline at the 37-foot level of the two 40-foot test wells, the same depth at which groundwater supplying nearby drinking water wells is found. Testing last month found no contamination in nearby drinking water wells.
Gilfilian provided DEC with a proposed plan to correct the problem. The plan requires Whittier Properties Inc. to determine the extent of the contamination, learn which direction the fuel may be migrating, and remove and treat contaminated soil and groundwater.
The work plan has been approved and work is to begin by Feb. 21, said Paul Horwath, an environmental engineer with DEC.
Six new monitoring wells will be installed in locations near the gas station to define the extent of contamination, according to the plan.
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