Mealey's (June 6, 2016, 2:01 PM EDT) -- BOSTON — The Massachusetts Supreme Judicial Court on June 6 upheld a ruling awarding summary judgment to the state’s Department of Environmental Protection (DEP) in a declaratory judgment action, after finding that the agency did not err in finding that leaded gasoline is not subject to the “oil exemption” in the Massachusetts Oil and Hazardous Material Release Prevention and Response Act, which establishes regulations for the cleanup of spills of hazardous materials near public water supplies (Peterborough Oil Company LLC v. Department of Environmental Protection, No. 2015-P-0199, Mass. Sup.;2016 Mass. LEXIS 360)....