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5.1 AIR QUALITY <br /> 5.1.3.6.3 Toxic Air Contaminant Emissions: Existing Turbine <br /> Maximum annual TAC emissions from the existing turbine have been calculated using the <br /> same emission factors as those used for the new turbine/HRSG. Detailed calculations are <br /> shown in Appendix 5.1A, Table 5.1A-11. <br /> TABLE 5.1.23 <br /> Maximum Proposed TAC Emissions for the CTG/HRSG <br /> Maximum Emissions, CTG/HRSG Maximum Emissions,Aux Boiler <br /> Compound Ib/hr tpy Ib/hr tpy <br /> Ammonia' 28.2 114.3 0 0 <br /> Propylene 1.6 6.6 0.03 <0.01 <br /> Hazardous Air Pollutants <br /> Acetaldehyde 0.08 0.3 <0.01 <0.01 <br /> Acrolein 0.01 0.05 <0.01 <0.01 <br /> Benzene 0.03 0.1 <0.01 <0.01 <br /> 1,3-Butadiene 0.001 0.004 <0.01 <0.01 <br /> Ethylbenzene 0.07 0.3 <0.01 <0.01 <br /> Formaldehyde 1.5 6.1 <0.01 <0.01 <br /> Hexane 0.5 2.2 <0.01 <0.01 <br /> Naphthalene 0.003 0.01 <0.01 <0.01 <br /> PAH Sb <0.001 0.003 <0.01 <0.01 <br /> Toluene 0.3 1.1 <0.01 <0.01 <br /> Xylene 0.1 0.6 <0.01 <0.01 <br /> 'Based on 10 ppmc ammonia slip from CTG/HRSG SCR system. No ammonia use or emissions for auxiliary <br /> boiler. <br /> bExcluding naphthalene. See Appendix 5.1A,Table 5.1A-8. <br /> 5.1.3.7 Total HAP Emissions After Modification <br /> Total HAP emissions from the existing and new equipment are shown in Table 5.1-24 below. <br /> Note that ammonia and propylene are not HAPs and are not included in the calculation of <br /> total HAPS from the facility after modification. <br /> TABLE 5.1-24 <br /> Total HAP Emissions from the Facility After Modification <br /> Maximum Individual HAP Total HAP Emissions, <br /> Emissions Unit Emissions,tons per year tons per year <br /> New LEC CTG/HRSG 6.1 11.1 <br /> New LEC Auxiliary Boiler <0.01 <0.01 <br /> Existing STIG Turbine 1.4 2.6 <br /> Total 7.5 13.8 <br /> SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) 5.1-29 <br />