Large animal farms will be required to report more air pollution from animal waste after the D.C. Circuit April 11 vacated an Environmental Protection Agency rule (Water-keeper All. v. EPA, 2017 BL 117866, D.C. Cir., No. 09-1017, 4/11/17). The agency’s Reporting Exemption Rule, finalized in December 2008, exempted owners of concentrated animal feeding operations from some federal air reporting requirements tied to such hazardous substances as ammonia and hydrogen sulfide.
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