Environmental Protection Agency February 26, 2020 – Federal Register Recent Federal Regulation Documents

EPA is announcing the availability of and soliciting public comment on the draft Toxic Substances Control Act (TSCA) risk evaluation of trichloroethylene (TCE). EPA is also submitting the same document to the TSCA Science Advisory Committee on Chemicals (SACC) for peer review and is announcing that there will be an in-person public meeting of the TSCA SACC to consider and review the draft risk evaluation. Preceding the in-person meeting, there will be a preparatory virtual public meeting for the panel to consider the scope and clarity of the draft charge questions for the peer review. The purpose of conducting risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use, including an unreasonable risk to a relevant potentially exposed or susceptible subpopulation.

The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted by the Department of Ecology (Ecology). In 1991, Ecology established source-category regulations for kraft pulp mills, sulfite pulping mills, and primary aluminum plants. These source-category regulations contain requirements specific to these types of facilities. However, the source-category regulations also rely upon cross- references to the general air quality regulations to implement program elements such as new source review permitting. Since 1991, many of the cross-references to the general regulations for air pollution sources have changed. The EPA is approving a revision to the SIP updating the cross-references and other miscellaneous changes.

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by the State of Utah on January 4, 2016, which include revisions to Utah's Division of Administrative Rule (DAR) R307-110-10 and maintenance plans for the Salt Lake County, Utah County, and Ogden City nonattainment areas (NAAs) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 microns (PM10), and on March 6, 2019, which include PM10 redesignation requests and supplemental information for Salt Lake County, Utah County and Ogden City. These submittals demonstrated that the Salt Lake County, Utah County and Ogden City areas have attained the PM10 National Ambient Air Quality Standards (NAAQS), request redesignation to attainment, and include maintenance plans for the areas demonstrating attainment for fifteen years. Also, the EPA is approving Utah's February 27, 2017 submittal, which includes rule revisions to address our October 19, 2016 conditional approval of Utah's DAR R307-302 revisions that were submitted May 9, 2013, May 20, 2014 and September 8, 2015. Additionally, the EPA is approving SIP revisions submitted by the State of Utah on February 15, 2019, with additional non-substantive changes submitted on July 1, 2019, August 20, 2019, and October 15, 2019, which includes revisions that are located in DAR R307-110-17 and SIP Subsections IX.H.1-2. We are also approving the transportation conformity motor vehicle emissions budgets (MVEB), for each of the three maintenance areas, as described in our proposed rule. The EPA is taking this action pursuant to the Clean Air Act (CAA or the Act).