Findings Prompt EPA Staff To Eye First-Time Expansion Of Air Toxics List

Prompted by new scientific data from more than a dozen states, EPA staff are considering whether to recommend to senior officials that the agency list hydrogen sulfide (H2S) as a hazardous air pollutant (HAP) in its air toxics program -- which would likely prompt new emissions control requirements, agency sources say. If the agency decides to move forward with a listing, which environmentalists asked the agency to do in 1999, it would mark the first time EPA has added an...