California Backs Sweeping PM NAAQS Attainment Plan But Criticism Persists

California air board officials have adopted a sweeping plan for the San Joaquin Valley to attain four different fine particulate matter (PM 2.5) standards over the next six years, but many environmentalists remain critical and skeptical of the plan in part because it relies on over $4 billion of worth of unidentified "financial incentives." In addition, environmentalists are continuing to attack the validity of numerous decades-old emission reduction credits (ERCs) being used by the oil and gas industry to comply...