杏吧原创

D.C. works to identify, clean up oily substance on Potomac River

Credit: 杏吧原创/Michelle Basch

D.C. works to identify, clean up oily substance on Potomac River

More Potomac River at Gravelly Point

D.C. works to identify, clean up oily substance on Potomac River

D.C. works to identify, clean up oily substance on Potomac River

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