Sue Beffel is the site leader for the cleanup at Colvin Run. The Virginia stream is one of 428 cleanup sites all along the Potomac River, which runs through Washington, DC and flows into the Chesapeake Bay, an estuary on the Atlantic coast. There's a wide variety of trash to clean up, including tires, plastic bottles, beer cans, and other careless cast-offs.
Source: tatoeba (12274003)