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Dye Test Aims to Find Potomac Oil Sheen Source: Coast Guard

  • A duck contaminated with oil is shown at Constitution Gardens in Washington, D.C., on Friday, Feb. 5, 2016. The Coast Guard is responding to a report of a fuel oil sheen on the Potomac River. (Photo by Laurel Siegrist/US Coast Guard)
    A duck contaminated with oil is shown at Constitution Gardens in Washington, D.C., on Friday, Feb. 5, 2016. The Coast Guard is responding to a report of a fuel oil sheen on the Potomac River. (Photo by Laurel Siegrist/US Coast Guard)
  • A worker cleans an oiled goose in this image released by the Coast Guard Feb. 6, 2016. The Coast Guard identified 22 geese and one duck contaminated with oil as part of an investigation into a fuel oil sheen reported on the Potomac River. (US Coast Guard)
    A worker cleans an oiled goose in this image released by the Coast Guard Feb. 6, 2016. The Coast Guard identified 22 geese and one duck contaminated with oil as part of an investigation into a fuel oil sheen reported on the Potomac River. (US Coast Guard)

ARLINGTON, Va. -- The U.S. Coast Guard says a dye test will be conducted in the Potomac River and Roaches Run Waterfowl Sanctuary near Arlington, Virginia, to find the source of oil sheens spotted on the river.

The Coast Guard announced in a news release that it will work with state and local officials to conduct a dye test Monday morning in the storm water system for the Roaches Run watershed. Cmdr. Michael Keane, the incident commander, says the non-toxic dye appears bright yellow or green.

The Coast Guard believed that the sheens spotted last week were mostly gone, but reported Sunday that investigators found a possible new source.

The Coast Guard says some recovered oil is awaiting analysis at a lab.

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