Approval and Promulgation; State of Utah; Salt Lake County and Utah County Nonattainment Area Coarse Particulate Matter State Implementation Plan Revisions to Control Measures for Point Sources

The Environmental Protection Agency (EPA) is proposing to approve certain state implementation plan (SIP) revisions submitted by Utah on January 4, 2016, and certain revisions submitted on January 19, 2017, for the coarse particulate matter (PM10) national ambient air quality standard (NAAQS) in the Salt Lake County and Utah County PM10 nonattainment areas. The revisions that the EPA is proposing to approve are located in Utah Division of Administrative Rule (DAR) R307-110-17 and SIP Subsection IX.H.1-4, and establish emissions limits for PM10, nitrogen oxides (NOx) and sulfur dioxide (SO2) for certain stationary sources in the nonattainment areas. These actions are being taken under section 110 of the Clean Air Act (CAA).