(a) On December 3, 2007 Jon L. Huntsman, Jr., Governor, State of Utah, submitted a certification letter which provides the State of Utah's SIP provisions which meet the requirements of CAA Section 110(a)(1) and (2) relevant to the 1997 Ozone NAAQS. On December 21, 2009 M. Cheryl Heying, Director, Utah Division of Air Quality, Department of Environmental Quality for the State of Utah, submitted supporting documentation which provides the State of Utah's SIP provisions which meet the requirements of CAA Section 110(a)(1) and (2) relevant to the 1997 Ozone NAAQS.

(b) On December 3, 2007, Jon L. Huntsman, Jr. Governor, State of Utah, provided a submission to meet the infrastructure requirements for the State of Utah for the 1997 PM2.5 NAAQS. On April 17, 2008, M. Cheryl Heying, Director, Utah Department of Environmental Quality, provided a second submission to meet the infrastructure requirements for the State of Utah for the 1997 PM2.5 NAAQS. On September 21, 2010, M. Cheryl Heying, Director, Utah Department of Environmental Quality, provided a submission to meet the infrastructure requirements for the State of Utah for the 2006 PM2.5 NAAQS. The State's Infrastructure SIP is approved with respect to the 1997 and 2006 PM2.5 NAAQS with respect to CAA section 110(a)(1) and the following elements of section 110(a)(2): (A), (B), (C) with respect to PSD and minor NSR requirements, (D)(i)(II) with respect to PSD requirements, (E)(i), (E)(iii), (F), (G), (H), (J), (K), (L), and (M).

(c) Gary R. Herbert, Governor, State of Utah, provided submissions to meet the infrastructure requirements for the State of Utah for the 1997 PM2.5 NAAQS on December 3, 2007; 2006 PM2.5 NAAQS on September 21, 2010; 2008 Pb NAAQS on January 19, 2012; 2008 ozone NAAQS on January 31, 2013; 2010 NO2 NAAQS on January 31, 2013; 2010 SO2 NAAQS on June 2, 2013; and 2012 PM2.5 on December 4, 2015. The State's Infrastructure SIP is approved with respect to the 1997 and 2006 PM2.5 NAAQS with respect to CAA Section 110(a)(1) and element (D)(ii) of Section 110(a)(2). The State's Infrastructure SIP is approved with respect to the 2008 ozone NAAQS with respect to CAA Section 110(a)(1) and the following elements of Section 110(a)(2): (A), (B), (C), (D)(i)(II) prong 3, (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M). The State's Infrastructure SIP is approved with respect to the 2008 Pb, 2010 SO2, 2010 NO2, and 2012 PM2.5 NAAQS with respect to CAA Section 110(a)(1) and the following elements of Section 110(a)(2): (A), (C), (D)(i)(II) prong 3, (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).

(d) The Utah Department of Environmental Quality submitted certification of Utah's infrastructure SIP for the 2008 Pb NAAQS on January 19, 2012; 2010 NO2 NAAQS on January 31, 2013; 2010 SO2 NAAQS on June 2, 2013; and 2012 PM2.5 on December 4, 2015. Utah's infrastructure certifications demonstrate how the State, where applicable, has plans in place that meet the requirements of section 110 for the 2008 Pb, 2010 NO2, 2010 SO2 and 2012 PM2.5 NAAQS. The State's Infrastructure SIP for 2008 Pb, 2010 NO2, 2010 SO2 and 2012 PM2.5 NAAQS is approved with respect to 110(a)(2)(B).

[76 FR 43905, July 22, 2011, as amended at 78 FR 63887, Oct. 25, 2013; 81 FR 50628, Aug. 2, 2016; 83 FR 47567, Sept. 22, 2018]