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5.13 VISUAL RESOURCES <br /> the overall quality of the view from this location,as viewed by drivers and passengers along <br /> Eight Mile Road or residents from points further away. <br /> 5.13.2.4.4 Light and Glare <br /> The project's effects on visual conditions during hours of darkness will be limited. As <br /> indicated in Section 5.13.2.3.6, some night lighting would be required for operational safety <br /> and security. There would be additional visible lighting associated with the project stack, <br /> and open site areas. High illumination areas not occupied on a regular basis would be <br /> provided with switches or motion detectors to light these areas only when occupied. At <br /> times when lights are turned on,the lighting would not be highly visible off site and would <br /> not produce offsite glare effects. The offsite visibility and potential glare of the lighting <br /> would be restricted by specification of non-glare fixtures and placement of lights to direct <br /> illumination into only those areas where it is needed. With construction of the LEC,the <br /> overall change in ambient lighting conditions at the project site,as viewed from nearby <br /> locations,would not be substantial. <br /> Lighting that may be required to facilitate nighttime construction activities would,to the <br /> extent feasible and consistent with worker safety codes,be directed toward the center of the <br /> construction site and shielded to prevent light from straying offsite. Task-specific <br /> construction lighting would be used to the extent practical while complying with worker <br /> safety regulations. In spite of these measures,there may be limited times during the <br /> 24-month construction period when the project site may appear as a brightly lit area as seen <br /> in views from surrounding hillside residential areas. <br /> 5.13.2.4.5 Water Vapor Plumes <br /> NCPA is providing the following information to allow the CEC staff to assess potential <br /> visible plume formation from the proposed cooling tower and exhaust stack at LEC. <br /> Table 5.13-3 presents the plume conditions for the cooling tower,and Table 5.13-4 presents <br /> plume conditions for the CTG/HRSG exhaust stack <br /> TABLE 5.13-3 <br /> Cooling Tower Physical and Operational Characteristics <br /> Parameter Value <br /> Cooling Tower Length 336.7 ft(102.6 m) <br /> Cooling Tower Width 42.7 ft(13 m) <br /> Cooling Tower Exhaust Height 45.8 ft(13.9 m) <br /> Design Inlet Air Flow 1,284,000 cfm per cell <br /> Design Heat Rejection Rate 600.8 MMBtu/hr <br /> Design Liquid/Gas Ratio 0.788 <br /> Design Exhaust Velocity 1652 ft/min per cell <br /> Exhaust Flow Rate 1,297,000 cfm per cell <br /> Design Exhaust Temperature 85 deg. F <br /> Humidity Ratio Out 0.0264 <br /> Source: SPX Cooling Technologies, Inc. <br /> SAC/371322/082350001(LEC_5.13_VISUAL.DOC) 5.13-25 <br />