Coast Guard responding to sheen near Westport, Oregon

An MH-60 Jayhawk helicopter crew was launched from Group/Air Station Astoria, Ore., to confirm and survey the size of the sheen.

Cowlitz Clean Sweep contractors have been hired and are expected to arrive on scene at 1:45 p.m. Tuesday to conduct the remaining clean-up.

The amount of diesel fuel and motor oil released and the extent of the pollution's impact to the environment is unknown at this time.