Environmental Protection Agency June 9, 2011 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is hereby giving notice that the State of Missouri is revising its approved Public Water System Supervision Program under the Missouri Department of Natural Resources (MDNR). The EPA has determined that these revisions are no less stringent than the corresponding Federal regulations. Therefore, the EPA intends to approve these program revisions.

The Environmental Protection Agency (EPA) is announcing a 45- day public comment period for the External Review Draft of ``Guidance for Applying Quantitative Data to Develop Data-Derived Extrapolation Factors for Interspecies and Intraspecies Extrapolation.'' EPA is releasing this draft document solely for the purpose of seeking public comment prior to external peer review. The document will undergo independent peer review during an expert peer review meeting, which will be convened, organized, and conducted by an EPA contractor in 2011. The date of the external peer review meeting will be announced in a subsequent Federal Register notice. All comments received by the docket closing date July 25, 2011 will be shared with the external peer review panel for their consideration. Comments received after the close of the comment period may be considered by EPA when it finalizes the document. This document has not been formally disseminated by EPA. This draft guidance does not represent and should not be construed to represent EPA policy, viewpoint, or determination. Members of the public may obtain the draft interim guidance from https:// www.regulations.gov; or https://www.epa.gov/raf/DDEF/index.htm or from Dr. Michael Broder via the contact information below. This draft Guidance for Data Derived Extrapolation Factors document outlines approaches for developing factors for inter- and intra-species extrapolation based on data describing toxicokinetic and/or toxicodynamic properties of particular agent(s). The draft document was developed to provide guidance for EPA staff in evaluating such data and/or information and to provide information to the regulated community and other interested parties about deriving and implementing extrapolation factors derived from data instead of defaults.

EPA is approving revisions to the Idaho State Implementation Plan (SIP) that were submitted to EPA by the State of Idaho on April 16, 2007. This SIP submittal includes new and revised rules which provide the Idaho Department of Environmental Quality (IDEQ) the regulatory authority to address regional haze and to implement Best Available Retrofit Technology (BART) requirements.

EPA Region 4 proposes to modify the expiration date of the National Pollutant Discharge Elimination System (NPDES) general permit authorizing the discharge of stormwater from construction activities on Tribal Lands within the states of Alabama, Florida, Mississippi and North Carolina. This NPDES construction general permit (CGP), hereinafter referred to as ``the Region 4 CGP,'' was issued on September 1, 2009, with an expiration date of August 31, 2011. EPA Region 4 is proposing to extend the expiration date from August 31, 2011, to September 1, 2012. No other revisions are being proposed to the Region 4 CGP. The purpose of extending the expiration date is to ensure that there is no lapse in permit coverage prior to the effective date of the issuance of a new permit, which has been proposed for public review and comment in a separate action. Information about the proposed new permit, hereinafter referred to as ``the new National CGP,'' can be found at https://cfpub.epa.gov/npdes/stormwater/cgp.cfm.