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Draft Environmental Impact Report Page IV.D-15 Forward Landfill Expansion Table IV.13-2 Air Quality Data Summa (2004-2008) For the Project Area' INK jar Ozone Highest 1 Hour Average(ppm)3 0.09/- 0.096 0.099 0.109 0.093 0.105 Days of Exceedance 1 3 6 0 2 Highest 8 Hour Average(PPM)3 0.07/0.075 0.080 0.086 0.092 0.082 0.091 Days of Exceedance 1 5 1 10 1 21 1 4 1 7 Particulate Matter(PM10) Highest 24 Hour Average(pg/m')' 50/150 61 84 85 75 105 Days of Exceedance 1810 46.5 62.9 23.5 Annual Average (pg/M,)3 20/- 29.4 29.8 33.4 27.7 1 34.0 Particulate Matter(P M Highest 24 Hour Average(ug/rn ) -/35 41 70 53.3 66.8 91 Days of Exceedance 9.2 14.8 20.8 34.1 Annual Average(pg/m )3 12/15 13.2 12.4 13.4 13.4 12.5 Carbon Monoxide(CO) Highest 1 Hour Average(PPM)3 20/35 3.7 4.3 4.4 3.6 2.6 Highest 8 Hour Average(ppm)3 9/9 2.5 2.9 2.3 2.3 1.6 Nitrogen Dioxide(NO2) Highest 1 Hour Average (ppm)3 .0.18/- 0.079 0.087 0.072 0.070 0.066 Annual Average(ppm)3 0.03/0.053 0.017 0.017 0.018 0.016 0.016 SOURCE EPA fhtW,l/vnAw.=.Sc!v/air/data/)2004-2008 and CARB Air Quality Data Statistics (hap;// wwarb.ca.gaiadam/welco=..htnd,2004-2008. NOTE:Values in bold are in excess of applicable standard. Ambient monitoring station for at Hazelton Road,Stockton. California Ambient Air Quality Standards are not to be exceeded and National Ambient Air Quality Standards are not to be exceeded more than once per year. ppm=parts per million,ug/m3=micrograms per cubic meter. Potential lmgacts and Mitigation Measures Criteria of Significance According to Appendix G of the CEQA Guidelines a project may be deemed to have a significant effect on the environment if it would: • Conflict with or obstruct implementation of the applicable air quality plan(s); • Violate any air quality standard or contribute substantially to an existing or projected air quality violation;