Oil refiners will be required to further curb air pollution from storage tanks, flares and heavy-oil processing equipment under proposed rules released on Thursday by the U.S. Environmental Protection Agency. The agency’s proposals—which are now open to a 60-day public-comment period—also aim to require air tests for benzene at refineries’ fence-lines to make sure that air-quality standards are being met and neighboring communities aren’t affected by emissions. The EPA’s proposed rules issued on Thursday come on the agency’s deadline for reviewing regulations that govern refinery emissions, which it was ordered to do by a federal judge. Several environmental groups sought that ruling, arguing the agency had not fulfilled Clean Air Act requirements to review emissions standards for plants that make fuels such as gasoline and diesel. Calling the measures “common sense steps,” the EPA estimated that implementing its proposals would reduce emissions of toxic gases such as benzene, toluene […]