Heather Bellow is reporting for The Berkshire Eagle that the Massachusetts Department of Environmental Protection on October 3 was investigating the source of an oil slick on the Housatonic River. The source of the pollution was believed to be located north of the Elm Street bridge in Pittsfield, where the slick was first seen late last week. Three members of the DEP’s emergency team were present Oct. 3, looking down at the river, where the sheen of some type of fuel could be seen. Pittsfield resident Maria Vasquez was taking a walk along Elm Street on Sept. 30 when she spotted something in the river she had never seen before. “I’ve never seen a slick there,” said Vasquez, who is familiar with the area near the road bridge where the river flows southwest. On Oct. 3, the DEP workers declined to be identified, but said they had just been called about the contaminant and were about to start tracing it north to figure out where it came from. Vasquez said the area has always teemed with wildlife such as ducks and raccoons, and she once saw a bobcat cross the river. She found the presence of pollution troubling. “That’s really sad to see,” she said. Read more in The Berkshire Eagle.