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• Most of the groundwater in the property is classified as very <br />hard (greater than 181 mg/1) and may require softening for indus- <br />trial use to avoid scaling in equipment. Nearly all of the ground- <br />water within the property is suitable for construction purposes <br />(Metcalf S Eddy, 1975). <br />PROJECT WATER REQUIREMENTS <br />The overall complex water requirements are currently estimated <br />to be 6500 gpm. This figure allows for an approximate 400 gpm <br />contingency. Water will be utilized for the purposes indicated <br />in the following plant activities: <br />- Mining - 350 gpm - Wetting down blasted shale, mine roads, <br />and drilling dust suppression. <br />• - Crushing, conveying, and coarse ore storage - 150 gpm - Sup- <br />pression of dust with water sprays. <br />- Retorting and upgrading - 3,655 gpm - Cooling water, steam <br />generation, processed shale moisturizing, and coke removal. <br />- Processed shale disposal - 1,570 gpm - Dust control, revege- <br />tation program, and leaching of salts. <br />- General plant and personnel use - 265 gpm - Utility water, <br />fire protection, potable water, and sanitary sewage. <br />- Grand Valley Terminal Facilities - 60 gpm - Utility water, <br />fire protection, potable water, and sanitary sewage. <br />- During construction - Water for concrete manufacture, dust <br />control, compaction of grades and fills, and other general <br /> <br />G-29 <br />