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<br />a) Run-off <br /> <br />"'... <br />en <br />"'-, <br />w <br /> <br />Qu~,tity: Ve~j variable, depending on site. <br /> <br />Quality: In plant area, will contain residual oil. Near processed <br /> <br />shale disposal area, will be of very poor quality, contains <br /> <br /> <br />both organics and inorganics. <br /> <br />Disposal: Will be collected and impounded properly. Can be fed to <br /> <br />cooling system or used to moi5~urize spent shale. Costs <br /> <br />not estimated. <br /> <br />b) Boiler Feedwater Makeup Treatment Blowdown <br />Quantity: In range 1 to 60 gpm (2 - 90 acre-ft/yr) for ?araho, depending <br />upon whe~~er crude shale is upgraded. Approximately 120 to <br />220 gpm (= 190 to 350 acre-ft/yr) for Tosca II. <br /> <br />QuaE tv: <br /> <br />2 to 2.5\ total dissolved solids with no organic con~amination. <br /> <br />Disposal: (1) Will probably be used to moisturize spent shale at <br />negligible cost. <br />(2) Disposal L~ a lined evaporation pond should not exceed <br />0.le/l06 Btu product output for Paraho, and is in range <br />6 <br />0.3 - 0.5e/lO Btu for Tosco II. Area of ponds will not exceed <br />35 acres for ?araho, and will be in range of 60 to 120 acres <br />for Tosco II. <br />(3) Blowdown might first be treated by vapor ccmpression <br />evaporation and then disposed of in much smaller ponds. Cost <br />will not exceed 0.3e/l06 Btu for ?araho, and will be in range <br />6 <br />0.4 _ 1.le/lO Btu for Tosco II after taking credit for the <br />clean water recovered. The evaporation pond following the forced <br />evaporation will require less than 12 acres. <br />cl Cooling Tower Blowdown <br />It is assumed that no more than about IS percent of the makeup to the <br />cooling tower comes fram using retorting and upqrading foul wastewaters. These <br />wastewaters are treated and diluted with water from L~e river to a quality <br />that is suitable for makeup to the cooling tower (as described in Section 2.6). <br />These treatments are taken to be essential for plant operation. <br /> <br />8 <br />