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\, <br />Appendix D <br />Air Quality and Meteorology Data <br />TABLE D-6 ' <br />CLASS I VISCREEN IMPACT ANALYSIS <br />Visual Effects Screening Analysis for Yankee Gulch Piceance <br />Class I Area: Flat Tops Class I Area <br />*** Level-1 Screening *** Input Emissions for <br />Particulates 19.50 TON/YR <br />NOx (as NO2) 161.50 TON/YR <br />Primary NO2 .00 TON/YR <br />Soot .00 TON/YR <br />Primary SO9 .00 TON/YR ' <br />**** Default Particle Characteristics Assumed <br />Transport Scenario Specifications: <br />Background Ozone: .09 ppm <br />Background Visual Range: 239.00 km <br />Source-Observer Distance: 67.00 km Min. Source-Class I <br />Distance: 67.00 km Max. Source-Class I Dis tance: 113.00 km <br />Plume-Source-Observer Angle: 11.25 degrees <br />Stability: 6 <br />Wind Speed: 1.00 m/s <br />R E S U L T S <br />Asterisks (*) indicate plume impacts that exceed screening criteria <br />Maximum Visual Impa cts INSIDE Class I Area Screening <br />Criteria ARE NOT Exceeded Delta E <br />Contrast <br />Backgrnd Theta Azi Distance A lpha Crit Plume Crit Plume , <br />-------- ----- --- -------- - <br />SKY 10. 190. 89.5 ---- ---- ----- <br />29. 2.00 .367 ---- <br />.OS ----- <br />.003 <br />SKY 190. 190. 89.5 29. 2.00 .199 .OS -.003 <br /> <br />TERRAIN 10. 89. 67.0 <br />89. 2.00 .950 <br />.OS <br />.009 ' ' <br />TERRAIN 190. 89. 67.0 89. 2.00 .072 .OS .001 <br /> <br /> <br /> <br /> <br /> <br /> i <br />D-4 <br /> <br />