A sticky, black substance coating on cars and other outdoor surfaces has residents in an Anne Arundel County neighborhood concerned.

Neighbors in Pasadena, Maryland, want to know whether this substance is harmful. They are frustrated by the lack of answers from the Maryland Department of the Environment (MDE).

"The substance is really unusual," said John Garofolo, who lives in the Stoney Beach community. "It looked, at first, like it could be ash perhaps from the power plants that burn coal next door. But it was coated in something that seemed like hairspray that was gluing it down."

What is the black, sticky substance?

Garofolo and other neighbors told WJZ the residue would only come off with detergent. Community members reported the substance to MDE.

On Friday, October 17, Talen Ene

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