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Show Table 87. Utah's Compliance to National Ambient Air Quality Standards Pollutant Primary Standard Level of Type of Average Concentration Secondary Standard Level of Type of Average Concentration Utah's Compliance 1993 CO 8-hourb l-hourb 9ppm (10 mg/m3) None Non-attainment Pb Max quarterly average 1.5ug/m3 Same as primary Attainment N02* Annual Arithmetic mean 0.053 ppm (100ug/m3) Same as primary Attainment O3 Max daily 1-hour average0 0.12 ppm (235 ug/m3) Same as primary Non-attainment PM-10** Annual Arithmetic mean 24-hourd 50 ug/m3 150 ug/m3 Same as primary Same as primary Non-attainment so2*** Annual Arithmetic mean 24-hourb 80 ug/m3 (0.03ppm) 365 ug/m3 (0.14 ppm) 3-hourb 1300 ug/m3 (0.50 ppm) Non-attainment *NC>2 emissions are significant because they convert to nitrates which contribute to PM-10 and ozone formation. **PM-10 attainment relies heavily on the clean up of SO2 and NO2 . ***SO2 converts to sulfate which is a PM-2.5. Parenthetical value is an approximately equivalent concentration. Not to be exceeded more than once per year. The standard is attained when the expected number of days per calendar year with maximum hourly average concentrations above 0.12 ppm is _ 1, as determined according to Appendix H of the Ozone NAAQS. Particulate standards use PM-10 (particles less than lOu in diameter) as the indicator pollutant. The annual standard is attained when the expected annual arithmetic mean concentration is less than or equal to 50 ug/m3. The 24-hour standard is attained when the expected number of days per calendar year above 150 jig/m3 is equal to or less than one, as determined according to Appendix K of the PM NAAQS. Table 87. Source: 1993: U.S. Environmental Protection Agency (1994, Oct.). National Air Quality and Emissions Trends 1993. Office of Air Quality Planning and Standards, Research Triangle Park, N.C.: U.S. EPA. Table 2-1, p.19. Table 88. Summary of Risks Associated with Ambient Air Pollution in Utah Air Pollutant # of People at Risk Severity 5 Health Effects CO 310,500' 31,0502 <1 2 Headaches from short term exposure Aggravated angina Lead -0- 0 NO2 -0- 0 PM-10 989,546' 2563 4 7 Respiratory distress from NAAQS exceedances, increased respiratory infections, aggravation of asthma, bronchitis Mortality SO2 944 2 Aggravation of asthma 03 913,897' 131,5402 4 5 Irritation to eyes, nose, throat and lungs. Fatigue and headache. Patchy damage to ciliated cells of the upper respiratory airways. Increased respiratory infections, aggravation of asthma, bronchitis Population in non-attainment areas for specified pollutant. Number of people with chronic respiratory conditions within non-attainment areas for specific pollutant. Number of people with chronic respiratory conditions within 10-mile radius of Kennecott Smelter. Based on a scale of 1 to 7 developed for Unfinished Business (EPA) by the non-cancer workgroup, and adjusted with consideration to the number of people exposed, the ambient concentrations recorded in Utah, and the severity and nature of the symptoms and effects. Table 88. Source: Packham, McKinley, and Darrington. Human Health Effects from Ambient Air Pollution. Salt Lake City: Utah Division of Air Quality, Table 15, p.31. 123 |