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Class III represents selected areas that states may designate for development; allowable increments of <br /> new pollution are large(but not exceeding NAAQS). No Class III areas are designated in Colorado.All areas <br /> not designated as Class I are initially designated as Class II areas. The Project Area is located in a Class II <br /> area as codified in the Colorado State PSD permitting rules'. <br /> The PSD regulations are applicable to a source pollutant if the source has the potential to exceed the <br /> major source thresholds, of either 100 or 250 tpy of a regulated New Source Review pollutant, depending <br /> on the type of source pollutant that it is. For stationary source categories listed in the regulation, the <br /> threshold is 100 tpy. For source categories that are not listed, such as surface mining operations, the <br /> threshold is 250 tpy.The potential to emit calculation does not include fugitive emissions for the purpose <br /> of determining if the facility exceeds the 250 tpy threshold. Fugitive emissions are defined by EPA as <br /> "those emissions that could not reasonably pass through a stack, chimney, vent, or other functionally- <br /> equivalent opening."The Project is classified under the CAA as a PSD minor source of air quality emissions <br /> and would not exceed these thresholds under the PSD regulations because the majority of the Project <br /> emissions sources are fugitive in nature and as such are not included in the determination of PSD <br /> applicability for a non-listed source category such as coal mining. Project emissions estimates are included <br /> in Section 2.2.2.1.Therefore, PSD regulations and preconstruction monitoring would not be applicable to <br /> the mine. It should be noted that minor sources while not subject to PSD regulations can affect <br /> increments, but emissions remain below increment thresholds. For further detail please refer to <br /> reference, Environ 2017, specifically the tables in Section 5.1.1. Of the scenarios appropriate for this <br /> analysis (see Section 2.2.6.1 below), R, H and A2, there were no Class I or Class II PSD increments <br /> exceeded. <br /> Stationary sources that combust coal from the King II Mine that are regulated under PSD include the <br /> Pueblo and the Tijeras cement facilities located near Pueblo, Colorado and Albuquerque, New Mexico, <br /> respectively. <br /> Federal PSD regulations limit the maximum allowable increase in ambient pollutant concentration in <br /> Class I, Class II, and Class III areas (Table 2.2-2). The closest Class I areas to the Project Area (BLM and <br /> OSMRE 2017; Map A-5) include Mesa Verde National Park, about 14 miles (22.5 kilometers [km]) to the <br /> west, and the Weminuche Wilderness Area located 25 miles (40.2 km) to the northwest. For the known <br /> indirect sources of substantial emissions within the USA (the Pueblo and Tijeras cement facilities), the <br /> closest Class I areas are the Great Sand Dunes National Park and Preserve in Colorado (approximately 50 <br /> miles [80 km] to the west southwest), and the Bandalier National Monument and Pecos Wilderness Area <br /> in New Mexico (approximately 44 miles [70 km] north of the facility) (BLM and OSMRE 2017, Map A-5). <br /> ' S CCR 1001-05, Regulation Number 3, Part D, Concerning Major Stationary Source New Source Review and <br /> Prevention of Significant Deterioration <br /> Dunn Ranch Area LBA and Mining Plan Modification 6 <br /> Technical Resources Report <br />