WASHINGTON, Nov. 24 (TNSFR) -- The U.S. Environmental Protection Agency moved forward with a regulatory review addressing standards for hazardous air pollutants emitted from secondary lead smelting operations. This action involves an evaluation of the technology used by the industry to ensure that current National Emission Standards continue to provide appropriate environmental protection. The proposal involves amendments to 40 CFR Part 63. The basis of this regulatory initiative is a proposed more PR