Amended Proposed Test Rule for Hazardous Air Pollutants; Extension of Comment Period

Résumé

EPA is amending the proposed rule issued under section 4(a) of the Toxic Substances Control Act (TSCA) (61 FR 33178, June 26, 1996) that would require manufacturers and processors to test those hazardous air pollutants (HAPs) specified in the proposal for certain health effects. Under this amended HAPs test rule proposal (``amended HAPs proposal''), EPA would require that testing be conducted using eleven TSCA health effects test guidelines issued by EPA on August 15, 1997 (62 FR 43820), codified at 40 CFR part 799, subpart H, instead of the eleven OPPTS draft harmonized test guidelines cross-referenced in the June 26, 1996 proposed rule. The Agency is soliciting comments on the application of these part 799 test guidelines to the amended proposed HAPs test rule. In addition, the Agency is amending the proposed HAPs test rule by removing the testing requirements for phenol; specifying export notification requirements; reviewing the status of the proposals for enforceable consent agreements (ECAs) for pharmacokinetics (PK) studies submitted by industry; revising the economic assessment; including additional support documents in the rulemaking record; and describing other changes and