In comments on the proposed third step of the Environmental Protection Agency’s tailoring rule, industry groups argued the agency should include the largest emissions sources in the plant-wide applicability limits, eliminate the case-by-case need to determine required controls by setting source-specific emissions limits, and exempt facilities with actual emissions below the threshold regardless of emission potential. The tailoring rule requires permits from new sources emitting 100,000 tons/year, and existing sources increasing their emissions by 75,000 tons/year, of CO2 equivalent, and public comments closed on April 20.