Environmental Protection Agency July 5, 2018 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is announcing a 30- day public comment period associated with release of the draft IRIS Assessment Plan for naphthalene. This document communicates information on the scoping needs identified by EPA program and regional offices and the IRIS Program's initial problem formulation activities. Specifically, the assessment plan outlines the objectives for each assessment and the type of evidence considered most pertinent to address the scoping needs. EPA is releasing this draft IRIS Assessment Plan for public comment at least 30 days in advance of a public science webinar planned on August 23, 2018.

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Colorado on May 26, 2017, addressing regional haze. The revisions include source-specific revisions to the nitrogen oxides (NOX) best available retrofit technology (BART) determination for Craig Station Unit 1 and to the NOX reasonable progress determination for the Nucla Station. Both Craig Station Unit 1 and Nucla Station are owned in part and operated by Tri-State Generation & Transmission Association, Inc. (Tri-State). The EPA is taking this action pursuant to section 110 of the Clean Air Act (CAA).

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving portions of Oklahoma's State Implementation Plan (SIP) submittal, that addresses a CAA requirement that SIPs account for potential interstate transport of air pollution that significantly contributes to nonattainment or interferes with maintenance of the 2012 fine particulate matter (PM2.5) National Ambient Air Quality Standards (NAAQS) in other states. EPA finds that emissions from Oklahoma sources do not contribute significantly to nonattainment in, or interfere with maintenance by, any other state with regard to the 2012 PM2.5 NAAQS.

The Environmental Protection Agency (EPA) is proposing to approve a portion of the state implementation plan (SIP) revision submitted by the District of Columbia (the District) that pertains to the good neighbor and interstate transport requirements of the Clean Air Act (CAA) for the 2008 ozone national ambient air quality standards (NAAQS). The CAA's good neighbor provision requires EPA and states to address the interstate transport of air pollution that affects the ability of other states \1\ to attain and maintain the NAAQS. Specifically, the good neighbor provision requires each state in its SIP to prohibit emissions that will significantly contribute to nonattainment, or interfere with maintenance, of a NAAQS in another state. The District has submitted a SIP revision that addresses the good neighbor provision for the 2008 ozone NAAQS. In this action, EPA is proposing to approve the District's SIP as having adequate provisions to meet the requirements of the good neighbor provision for the 2008 ozone NAAQS in accordance with section 110 of the CAA.