Wyoming threatens suit over EPA inaction on haze plan

Wyoming is threatening to sue EPA over its failure to approve or disapprove the state’s second-round plan for compliance with the regional haze program that requires states to control air emissions and restore visibility in national parks and wilderness areas, only weeks after a federal appeals court upheld the state’s choices in an earlier round. In an Aug. 24 letter to EPA, Wyoming Attorney General Bridget Hill (R) gives the agency 60 days’ notice of the state’s intent to sue...