Dichloromethane and N-Methylpyrrolidone TSCA Chemical Risk Assessment; Notice of Public Meetings and Opportunity to Comment
EPA's contractor, The Scientific Consulting Group (SCG), Inc., has identified a panel of scientific experts to conduct a peer review of EPA's draft Toxic Substances Control Act (TSCA) chemical risk assessment, ``TSCA Workplan Chemical Risk Assessment for Dichloromethane and N-Methylpyrrolidone.'' EPA will hold three peer review meetings by web connect and teleconference. EPA invites the public to register to attend the meetings as observers and/or speakers providing oral comments during any or all of the peer review meetings as discussed in this notice. The public may also provide comment on whether they believe the appearance of conflict of interest exists for any proposed peer review panel expert.
Promulgation of State Implementation Plan Revisions; Revision to Prevention of Significant Deterioration Program; Infrastructure Requirements for the 1997 and 2006 PM2.5
EPA is proposing to partially approve and partially disapprove the State Implementation Plan (SIP) submissions from the State of Utah 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 particulate matter less than or equal to 2.5 micrometers ([mu]m) in diameter (PM2.5) on July 18, 1997 and on October 17, 2006. The CAA requires that each state, after a new or revised NAAQS is promulgated, review their SIP to ensure that it meets the requirements of the ``infrastructure elements'' necessary to implement the new or revised NAAQS. The State of Utah provided infrastructure submissions for the 1997 and 2006 PM2.5 NAAQS, dated April 17, 2008 and September 21, 2010, respectively. We propose to disapprove the submissions with respect to the requirements for state boards and to approve the remaining submissions that we have not already acted on. We also propose to approve portions of a submission from the State which was received by EPA on March 19, 2012. This submission revises Utah's Prevention of Significant Deterioration (PSD) program to meet Federal requirements as they existed on July 1, 2011, including required elements of EPA's 2008 PM2.5 New Source Review (NSR) Implementation Rule and 2010 PM2.5 Increment Rule. EPA acted separately on the State's submissions to meet certain interstate transport requirements of the CAA for the 2006 PM2.5 NAAQS.
Approval and Promulgation of Implementation Plans; New Mexico; Prevention of Significant Deterioration; Greenhouse Gas Plantwide Applicability Limit Permitting Revisions
The EPA is proposing to approve portions of one revision to the New Mexico State Implementation Plan (SIP) submitted by the New Mexico Environment Department (NMED) to EPA on January 8, 2013. The January 8, 2013, proposed SIP revision adopts necessary rule revisions to the PSD plantwide applicability limit (PAL) permitting provisions to issue PALs to GHG sources. EPA is proposing to approve the January 8, 2013 SIP revision to the New Mexico PSD permitting program as consistent with federal requirements for PSD permitting. At this time, EPA is proposing to sever and take no action on the portion of the January 8, 2013, SIP revision that relates to the provisions of EPA's July 20, 2011 GHG Biomass Deferral Rule. EPA is proposing this action under section 110 and part C of the Clean Air Act (CAA or the Act). EPA is not proposing to approve these rules within the exterior boundaries of a reservation or other areas within any Tribal Nation's jurisdiction.
Revisions to the Arizona State Implementation Plan, Maricopa County Area
EPA is proposing to approve revisions to the Maricopa County Area portion of the Arizona State Implementation Plan (SIP). These revisions concern particulate matter (PM) emissions from fugitive dust sources. We are approving local statutes that regulate these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act). We are taking comments on this proposal and plan to follow with a final action.