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SECTION 2.0:PROJECT DESCRIPTION <br /> 2.1.12.1 Wastewater Collection, Treatment, and Disposal <br /> The primary wastewater collection system will collect process wastewater runoff and <br /> stormwater runoff from all of the plant equipment and route it to the oil/water separator <br /> and wastewater lift station for testing before discharge to the WPCF. The secondary <br /> wastewater collection system will collect sanitary wastewater from sinks,toilets, showers, <br /> and other sanitary facilities, and discharge to the WPCF. The water balance diagram, <br /> Figure 2.1-5, shows the expected wastewater streams and Table 2.1-1 shows the flow rates <br /> for LEC for the annual average and maximum conditions,respectively. <br /> 2.1.12.2 Circulating Water System Blowdown <br /> Circulating water system blowdown will consist of the tertiary-treated makeup water from <br /> the WPCF and other recovered process wastewater streams from the LEC that have been <br /> concentrated by evaporative losses in the cooling tower, along with the chemicals added to <br /> the circulating water. The cooling tower concentrates these streams near the mineral <br /> solubility limit for the constituents of concern(calcium, silica, and total dissolved solids <br /> [TDS]). This concentrated water must then be removed from the cooling tower via <br /> blowdown to prevent the formation of mineral scale in heat transfer equipment. The <br /> chemicals added to the circulating water control scaling and biofouling of the cooling tower <br /> and control corrosion of the circulating water piping and intercooler. Cooling tower <br /> blowdown will be directed to an onsite Class I UIW. <br /> 2.1.12.3 Plant Drains and 011/Water Separator <br /> General plant drains will collect containment area washdown, sample drains, and drainage <br /> from facility equipment drains. Water from these areas will be collected in a system of floor <br /> drains,hub drains, sumps,and piping and routed to the wastewater collection system. Drains <br /> that potentially could contain oil or grease will first be routed through an oil/water separator. <br /> Water from the plant wastewater collection system will be directed to the WPCF. Wastewater <br /> from combustion turbine water washes will be collected in holding tanks or sumps and will <br /> be trucked off site for disposal at an approved wastewater disposal facility. <br /> 2.1.12.4 Solid Wastes <br /> LEC will produce maintenance and plant wastes typical of power generation operations. <br /> Generation plant wastes include oily rags,broken and rusted metal and machine parts, <br /> defective or broken electrical materials,empty containers,and other solid wastes,including <br /> the typical refuse generated by workers. Solid wastes will be trucked offsite for recycling or <br /> disposal (see Section 5.14). <br /> 2.1.12.5 Hazardous Wastes <br /> Several methods will be used to properly manage and dispose of hazardous wastes <br /> generated by LEC.Waste lubricating oil will be recovered and recycled by a waste oil <br /> recycling contractor. Spent lubrication oil filters will be disposed of in a Class I landfill. <br /> Spent SCR and oxidation catalysts will be recycled by the supplier or disposed of in <br /> accordance with regulatory requirements.Workers will be trained to handle hazardous <br /> wastes generated at the site. <br /> 2-28 SAC/371322/082340003(LEC_2.0_PROJECT_DESC.DOC) <br />