States Stress Need For EPA Mobile Source Rules To Meet SIP Requirements

California and other air regulators are stepping up calls for EPA to pursue stringent rules on federally regulated mobile sources so they can advance acceptable “contingency measure plans” (CMPs) in state implementation plans (SIPs) -- part of a push to convince the agency to withdraw its proposed disapproval of a Los Angeles-area SIP. In recent comments, top officials from the California Air Resources Board (CARB), South Coast Air Quality Management District (SCAQMD) and Wisconsin’s environmental agency pressed EPA to step-up...