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5.1 AIR QUALITY <br /> 6,797 Btu/kWh (HHV). The facility will have an incremental heat rate with duct firing of <br /> approximately 8,773 Btu/kWh (HHV). <br /> Post-combustion air pollution controls for the gas turbine/HRSG will include SCR for NOx <br /> control and an oxidation catalyst for CO control. The turbine and HRSG may be operated up <br /> to 24 hours per day, 7 days per week. LEC will be frequently dispatched and will operate on <br /> the order of approximately a 76 to 82 percent annual capacity factor. <br /> The auxiliary boiler is expected to operate only during turbine startups. Specifications for the <br /> new combustion turbine and HRSG are summarized in Table 5.1-11; auxiliary boiler <br /> specifications are provided in Table 5.1-12. A typical fuel analysis is summarized in <br /> Table 5.1-13. <br /> TABLE 5.1-11 <br /> New GE 7FA Combustion Turbine/HRSG Design Specifications <br /> Gas Turbine Manufacturer: General Electric <br /> Gas Turbine Model: PG7241 FA <br /> Fuel: Natural gas <br /> Design Ambient Temperature: 23.7°F <br /> Nominal Heat Input Rate: 1885 MMBtu/hr @ HHV(gas turbine only) <br /> 2107 MMBtu/hr @ HHV(gas turbine with duct firing) <br /> Gas Turbine Nominal Power Generation Rate: 180 MW <br /> Plant Nominal Net Power Output: 255 MW <br /> Nominal Exhaust Temperature: 180°F <br /> Exhaust Flow Rate (nominal, base load): 991,425 acfm <br /> Exhaust 02 Concentration, dry volume: 13.7% <br /> Exhaust CO2 Concentration, dry volume: 4.1% <br /> Exhaust Moisture Content,wet volume: 8.8% <br /> Emission Controls: Dry Low-NO,burners and SCR(2.0 ppmv NOx @ 15% 02) <br /> Oxidation catalyst(3.0 ppmv CO @ 15%02) <br /> *Low-temperature scenario. <br /> TABLE 5.1.12 <br /> New Auxiliary Boiler Design Specifications <br /> Boiler Manufacturer: Rentech Boiler Systems, Inc <br /> Boiler Model: "D"type, model TBA <br /> Fuel: Natural gas <br /> Nominal Heat Input Rate: 65 MMBtu/hr @ HHV <br /> Nominal Steam Generation Rate: 45,000 Ib/hr <br /> Emission Controls: Low-NOx burner(7.0 ppmv NOx @ 3% 02) <br /> SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) 5.1-21 <br />