ARCHIVED REPORTS LEC APPLICATION FOR CERTIFICATION

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5.1 AIR QUALITY TABLE 5.1-22 Greenhouse Gas Emissions from New Equipment CO2. metric CO2eq, metric Unit CO2, metric tonnes/yr tonnes/MWh tonnes/yr' CTG/H RSG 902,487 0.376 Auxiliary Boiler 1,608 Not applicable — Total 904,095 0.376 904,971 *Includes CH4, N20 and SF6. 5.1.3.6 Hazardous Air Pollutants Noncriteria pollutants are compounds that have been identified as pollutants that pose a significant health hazard. Nine of these pollutants are regulated under the federal New Source Review program: lead, asbestos,beryllium,mercury,fluorides, sulfuric acid mist, hydrogen sulfide,total reduced sulfur, and reduced sulfur compounds.7 In addition to these nine compounds,the federal Clean Air Act lists 189 substances as potential hazardous air pollutants (Clean Air Act Sec. 112(b)(1). The SJVAPCD regulates toxic air contaminant emissions under the SJVAPCD's Integrated Air Toxic Program.This program integrates the state and federal requirements. Any pollutant that may be emitted from the LEC and is on the federal New Source Review list,the federal Clean Air Act list,and/or the SJVAPCD toxic air contaminant list has been evaluated as part of the AFC. 5.1.3.6.1 Toxic Air Contaminant Emissions: New Gas Turbine/HRSG and Auxiliary Boiler Maximum hourly and annual TAC emissions were estimated for the gas turbine/HRSG and the auxiliary boiler based on the heat input rates (in MMBtu/hr and MMBtu/yr), emission factors (in lb/MMBtu),and the nominal fuel higher heating value of 1004 Btu/scf. Hourly and annual emissions were based on the heat input rates shown in Table 5.1-17. The ammonia emission factor was derived from an ammonia slip limit of 10 ppmv @ 15 percent 02. At the request of the SJVAPCD 8,Ventura County emission factors were used to quantify other TAC emissions. The Ventura County AB2588 combustion emission factors do not include factors for hexane or propylene oxide or for speciated polyaromatic hydrocarbons (PAHs),so emission factors for these TACs were taken from the California Air Resources Board's CATEF database for natural gas-fired gas turbines. TAC emissions are summarized in Table 5.1-22. Detailed emissions calculations,including emission factors,are provided in Appendix 5.1A,Tables 5.1A-8 and 5.1A-9. 5.1.3.6.2 Toxic Air Contaminant Emissions: Cooling Tower Maximum hourly and annual TAC emissions from the cooling tower are extremely low. As shown in Table 5.15-23,concentrations of most metals and salts in the water supply were below detection limits. Total TAC emissions from the cooling tower are shown in Appendix 5.1A,Table 5.1A-10. 7 These pollutants are regulated under federal and state air quality programs;however,they are evaluated as noncriteria pollutants by the California Energy Commission. 8June 5,2008,email message from Cheryl Lawler to Nancy Matthews,"District's Comments for Lodi Energy Center Modeling Protocol." 5.1-28 SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC)