Environmental Protection Agency July 21, 2010 – Federal Register Recent Federal Regulation Documents

EPA is proposing to act on proposed revisions to Colorado's State Implementation Plan (SIP). On June 18, 2009, Colorado submitted proposed SIP revisions intended to ensure attainment of the 1997 ozone National Ambient Air Quality Standards (NAAQS) in the Denver Metro Area/North Front Range nonattainment area by 2010. The June 18, 2009 submittal consists of an ozone attainment plan, which includes emission inventories, a modeled attainment demonstration using photochemical grid modeling, a weight of evidence analysis, and 2010 motor vehicle emissions budgets for transportation conformity. The submittal also includes revisions to Colorado Regulation Numbers 3 and 7 and to Colorado's Ambient Air Quality Standards Regulation. EPA is proposing to approve the attainment demonstration, the rest of the ozone attainment plan, with limited exceptions, and the revisions to Colorado Regulation Number 3, Parts A and B. EPA is proposing to approve portions of the revisions to Colorado Regulation Number 7 and to disapprove other portions. EPA is proposing to disapprove Colorado Regulation Number 3, Part C, and Colorado's Ambient Air Quality Standards Regulation. EPA is proposing to disapprove limited portions of the ozone attainment plan. EPA is proposing these actions pursuant to section 110 and part D of the Clean Air Act (CAA) and EPA's regulations.

The Environmental Protection Agency (EPA) is hosting public information meetings on the proposed Revised Total Coliform Rule (RTCR). The proposed RTCR is a proposed revision to the current Total Coliform Rule (TCR) which was promulgated in 1989. The proposed RTCR was published in the Federal Register on July 14, 2010. During the public information meetings, EPA will discuss the major provisions of the current TCR, the history of the development of the proposed RTCR, the core elements of the proposed RTCR, the comparison between the current TCR and the proposed RTCR, and specific areas where EPA is requesting comment. Additional topics that will be discussed include the cost and benefit information of the proposed rule and the planned guidance manuals that will be developed to support the implementation of the final rule.

The Toxic Substances Control Act (TSCA) Interagency Testing Committee (ITC) transmitted its Sixty-Sixth Report to the Administrator of EPA on June 3, 2010. In the 66\th\ ITC Report, which is included with this notice, the ITC is not making any changes to the TSCA section 4(e)Priority Testing List.

In compliance with the Paperwork Reduction Act (PRA) (44 U.S.C. 3501 et seq.), this document announces that an Information Collection Request (ICR) has been forwarded to the Office of Management and Budget (OMB) for review and approval. This is a request to renew an existing approved collection. The ICR, which is abstracted below, describes the nature of the information collection and its estimated burden and cost.

The Environmental Protection Agency (EPA) Region 8 issued a Notice of Intent to Delete portions of the Rocky Mountain Arsenal Federal Facility (RMA) from the National Priorities List (NPL) on June 17, 2010. The portions proposed for deletion are the Central and Eastern Surface Areas of the On-Post Operable Unit (OU3) including surface media and structures (CES) and the surface media of the entire Off-Post Operable Unit (OU4) (OPS). A formal request was made to extend the public comment period which is scheduled to end on July 19, 2010. In response, EPA is reopening the public comment period for an additional 30 days concluding on August 16, 2010.