ARCHIVED REPORTS LEC APPLICATION FOR CERTIFICATION

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SECTION 2.0:PROJECT DESCRIPTION To prevent biofouling in the circulating water system, sodium hypochlorite will be fed into the system.The hypochlorite feed equipment will consist of a bulk storage tank and two full-capacity hypochlorite metering pumps. A small storage tank and two full-capacity metering pumps will be provided for the feeding of either stabilized bromine or sodium bromide as alternate biocides. 2.1.11 Emission Control and Monitoring Air emissions from the combustion of natural gas in the CTG will be controlled using state-of-the-art systems. To ensure that the systems perform correctly,continuous emissions monitoring for NO,,and CO will be performed. Section 5.1,Air Quality,includes additional information on emission control and monitoring. 2.1.11.1 NO,, Emission Control Selective catalytic reduction will be used to control NO,,concentrations in the exhaust gas emitted to the atmosphere to 2 ppmvd from the gas turbines and duct burners. The SCR process will use anhydrous ammonia. Ammonia slip, or the concentration of unreacted ammonia in the exiting exhaust gas,will be limited to 10 ppmvd from the catalyst housing. The SCR equipment will include a reactor chamber,catalyst modules,ammonia vaporization and injection system, and monitoring equipment and sensors.The project will make use of the existing ammonia storage system,which consists of an anhydrous ammonia storage tank, spill containment basin,and refilling station with a spill containment basin and sump. 2.1.11.2 Carbon Monoxide An oxidation catalyst will be used to reduce the CO concentration in the exhaust gas emitted to the atmosphere to 3 ppmvd from the gas turbine. 2.1.11.3 Particulate Emission Control Particulate emissions will be controlled by the use of best combustion practices;the use of natural gas,which is low in sulfur,as the sole fuel for the CTG;and high-efficiency air inlet filtration; and a lube oil vent coalescer. 2.1.11.4 Continuous Emission Monitoring Continuous emission monitors will sample,analyze,and record fuel gas flow rate,NOX and CO concentration levels,and percentage of 02 or CO2 in the exhaust gas from the combustion turbine after it has passed through their respective catalysts in the HRSG. The data acquisition and handling system will generate reports of emissions data in accordance with permit requirements and will send alarm signals to the plant supervisory control system when emissions approach or exceed pre-selected limits. 2.1.12 Waste Management Waste management is the process whereby all wastes produced at LEC are properly collected,treated if necessary, and disposed of. Wastes include process and sanitary wastewater,nonhazardous waste, and hazardous waste,both liquid and solid. Waste management is discussed in more detail in Section 5.14. SACI371322I082340003(LEC_2.0_PROJECT_DESC.DOC) 2-27