DEP Officials Investigate Sheen Seen On Mon RiverPennsylvania Department of Environmental Protection officials are looking into a “light sheen” spotted on the Monongahela River Sunday.
Barge Gets Stuck On Mon River, Oil Sheen Develops On WaterA large oil sheen formed on the Monongahela River Tuesday afternoon and river traffic was halted when a tugboat transporting several barges became stuck on the water.

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