ANCHORAGE (AP) -- A petroleum sheen spotted Monday near a Cook Inlet drilling platform may be gas condensate or light oil.
Department of Environmental Conservation officials said Tuesday they had not determined the source of the sheen floating about three-tenths of a mile west of the Dolly Varden platform.
The sheen is about two miles long and a half-mile wide with 25 percent of the sheen consisting of softball-size patches of light oil.
On Tuesday, Unocal planned hydrostatic testing of an 8-inch sub-sea pipeline that transports natural gas from the Trading Bay Production Facility to the platform for use as fuel.
If the gas pipeline is ruled out as the source of the sheen, the company will test an undersea crude oil pipeline.
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