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Vantage to Pomona Heights Chapter 3 <br />230 kV Transmission Line Project FEIS Affected Environment <br /> PAGE 3-274 <br />Prevention of Significant Deterioration (PSD) permits are required for construction projects that may <br />significantly increase air pollutant emissions. The WDOE prepares PSD permits for industrial sources of <br />air pollution. PSD applies to new major sources or major modifications at existing sources for pollutants <br />where the area the source is located is in attainment or unclassifiable with the NAAQS. The Project is not <br />considered a major new source of pollution and, therefore, PSD does not apply. <br />Areas that have experienced persistent air quality problems are designated by the USEPA as <br />nonattainment areas. The federal CAA requires additional air pollution controls in these areas. Each <br />nonattainment area is declared for a specific pollutant; however, nonattainment areas for different <br />pollutants may overlap each other or share common boundaries. After air monitoring shows that a <br />nonattainment area is meeting health-based air quality standards, USEPA re-designated the areas as <br />attainment. Areas that are re-designated to attainment are called maintenance areas (WDOE 2011a). <br />A portion of the City of Yakima is considered a CO maintenance area and a large area encompassing <br />Yakima, Selah, and portions of the Project area are within a particulate maintenance area. Table 3.13-2 <br />shows readings from Yakima City monitored ambient air quality at the 402 S 4th Ave. station for PM2.5 <br />and PM10 from 2011 to 2014. No exceedances were recorded for the 24-hour or annual averaging period <br />between 2011 and 2014. Prior to Project construction, contractors doing demolition, excavation, clearing, <br />construction, or landscaping work must file a Dust Control Plan with the YRCAA to control fugitive dust <br />emissions. <br />Table 3.13-2 Yakima City Monitored Ambient Air Quality: PM2.5 and PM10 <br />POLLUTANT YEAR <br />24-HOUR VALUES ANNUAL <br />NUMBER OF <br />OBSERVATIONS <br />1ST THROUGH 4TH MAX. <br />RANGE (HIGH- <br />LOW) (µG/M3 ) <br />98TH <br />PERCENTILE <br />NUMBER <br />OF <br />EXCEED <br />MEAN <br />NUMBER <br />OF <br />EXCEED <br />PM2.5 <br />2011 65 43.4-35.3 36 0 13.2 0 <br />2012 341 65-38.3 31 0 10.4 0 <br />2013 344 51.5-39.5 38 0 9.6 0 <br />2014 332 44.6-36.5 27 0 8.6 0 <br />PM10 <br />2011 58 59-43 N/A 0 43 0 <br />2012 58 58-54 N/A 0 54 0 <br />2013 54 59-55 N/A 0 55 0 <br />2014 59 53-41 N/A 0 41 0 <br />Source: USEPA 2015 <br />3.13.4 Route Segment Specific Considerations <br />3.13.4.1 Route Segment 1a/NNR-1 <br />This segment is located within the YRCAA administrative area. <br />3.13.4.2 Route Segment 1b <br />This segment is located within the YRCAA administrative area. <br />3.13.4.3 Route Segment 1c <br />This segment is located within the YRCAA administrative area. <br />3.13.4.4 Route Segment 2a <br />This segment is located in the YRCAA and BCAA administrative areas.