Activists Eye Challenge If EPA Approves San Joaquin Dairy Emission Rules

Environmentalists are likely to challenge San Joaquin Valley air district dairy emissions rules that exempt some facilities from having to purchase emissions offsets if U.S. EPA approves the rules, even after reaching a consent decree with the agency last month to act on the high-profile issue. The San Joaquin Valley air district -- one of the country's largest and most polluted centers of agricultural production -- issued the first-time dairy rules in response to a 2004 state law that removed...