Environmental Protection Agency May 31, 2013 – Federal Register Recent Federal Regulation Documents

EPA is proposing to disapprove a specific portion of the State Implementation Plan (SIP) certifications submitted by the State of Montana to demonstrate that the SIP meets the infrastructure requirements of the Clean Air Act (CAA) for the National Ambient Air Quality Standards (NAAQS) promulgated for ozone on July 18, 1997. The CAA requires that each state, after a new or revised NAAQS is promulgated, review its SIP to ensure that it meets certain infrastructure requirements detailed in the CAA. The State of Montana submitted two certifications, dated November 28, 2007 and December 22, 2009, that its SIP met these requirements for the 1997 ozone NAAQS. EPA is proposing to disapprove a portion of the submitted revisions because the SIP does not meet the requirements in the CAA for state boards that approve permits or enforcement orders.

Under section 5(a)(2) of the Toxic Substances Control Act (TSCA), EPA is proposing to amend the significant new use rule (SNUR) for the chemical substance identified as 1-Propene, 2,3,3,3- tetrafluoro-, which was the subject of premanufacture notice (PMN) P- 07-601. This action would amend the SNUR to allow the manufacture and processing for certain uses without requiring a significant new use notice (SNUN). EPA is proposing this amendment based on review of newly submitted exposure and toxicity data.

This action announces the U.S. Environmental Protection Agency's (EPA's) approval of alternative testing methods for use in measuring the levels of contaminants in drinking water and determining compliance with national primary drinking water regulations. The Safe Drinking Water Act (SDWA) authorizes EPA to approve the use of alternative testing methods through publication in the Federal Register. EPA is using this streamlined authority to make 84 additional methods available for analyzing drinking water samples. This expedited approach provides public water systems, laboratories, and primacy agencies with more timely access to new measurement techniques and greater flexibility in the selection of analytical methods, thereby reducing monitoring costs while maintaining public health protection.