Clean Air Act Reclassification; Nevada-Reno Planning Area; Particulate Matter of 10 Microns or Less (PM-10)

In this action EPA proposes to find that the Reno (Washoe County) Planning Area (RPA) has not attained the PM-10 national ambient air quality standards (NAAQS) by the Clean Air Act (CAA) mandated attainment date for moderate nonattainment areas. Section 188(c)(1) of the Act established an attainment date of no later than December 31, 1994 for areas classified as moderate nonattainment areas under section 107(d)(4)(B) of the CAA. This proposed finding is based on monitored air quality data for the PM-10 NAAQS during the years 1992-1994. If EPA takes final action on this proposed finding, the RPA will be reclassified by operation of law as a serious nonattainment area under section 188(b)(2)(A) of the CAA.