Occupational Safety and Health Administration January 27, 2010 – Federal Register Recent Federal Regulation Documents

After thoroughly reviewing the comments and other information available in the record for the proposed rulemaking, OSHA concludes that the revised PortaCount[supreg] quantitative fit-testing protocols are not sufficiently accurate or reliable to include among the quantitative fit tests listed in Part II of Appendix A of its Respiratory Protection Standard. Therefore, OSHA is withdrawing the proposed rule without prejudice, and is inviting resubmission of the