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5.1 AIR QUALITY <br /> Contemporaneous emissions increases and decreases at the facility are included in the <br /> netting calculation to determine the net emissions changes at the facility. The net emissions <br /> changes are compared with the PSD significance levels in Table 5.1-36. <br /> If an ambient impact analysis is required,the analysis is first used to determine if the impact <br /> levels are significant. The determination of significance is based on whether the impacts <br /> exceed regulatory significance levels (40 CFR 51.165) shown in Table 5.1-37. <br /> TABLE 5.1-34 <br /> STIG Plant Emissions and PSD Major Source Thresholds <br /> NCPA Lodi CT#2 PSD Major Source <br /> Pollutant Emissions (tpy) Thresholds (tpy) Major? <br /> NO), 20.4 100 No <br /> SO2 5.7 100 No <br /> CO 58.8 100 No <br /> TABLE 5.1-35 <br /> LEC Proposed Emissions and PSD Major Source Thresholds <br /> PSD Major Source <br /> Pollutant LEC Emissions(tpy)* Thresholds (tpy) Major? <br /> NO, 71.5 100 No <br /> SO2 24.3 100 No <br /> CO 254.9 100 Yes <br /> Note: LEC emissions include CTG/HRSG, auxiliary boiler and cooling tower. <br /> TABLE 5.1-36 <br /> Net Emission Increases and Significant Emissions Levels <br /> Facility Net Increase PSD Significance <br /> Pollutant (tpy) Levels(tpy) Are Increases Significant? <br /> NO, 71.5 40 Yes <br /> SO2 24.3 40 No <br /> CO 254.9 100 Yes <br /> SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) 5.1-57 <br />