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<br />,,~ <br />-- <br />to <br /> <br />-3- <br /> <br />(",:' <br /> <br />Co: <br />c"; <br /> <br />field <br /> <br />design <br /> <br />and <br /> <br />the <br /> <br />physical characteristics of the <br />of these factors has been deter~ined <br /> <br />collection area. Neither <br /> <br />so an efficiency of 100 percent has been assumed. Additional <br />data on the characteristics of the alluvium and the design of <br />the well field will be required to refine this assumption and <br />to prepare applications for well permits. <br /> <br />Transportation. Transportation of the water (saline and <br />non-saline) will be by pipeline in all of the alternatives. <br />Leakage from the pipeline at joints or connections \oIill be <br />designed to be less than 0.1 percent of the flow in the <br />pipeline. It is assumed that major spills will be contained <br />immediately after occurrence, and thus represent negl igible <br />volumes of water. Both transportation losses and spill losses <br />have been assumed to be zero. <br /> <br />Treatment. Proposed methods of treatment include evaporation <br />ponds, reverse osmosis with pretreatment, and distillation. <br />The consumptive use associated with evaporation ponds is <br />assumed to be 100 percent of the water sent to the ponds. A <br />reverse osmosis plant with pretreatment is assumed to return <br />clean water to the river that is 75 and 85 percent of the <br />volume put into the plant, depending on, the salinity of the <br />input water. The appropriate efficiency for the given <br />alternative was determined by water treatment personnel at <br />URS. The consumptive use of a distillation plant is assumed <br />to be 85 percent of the brine input volume. <br /> <br />Disposal. It is assumed that. all methods of disposal will <br />have 100 percent consumptive use. That means no water will be <br />allowed to return to the river, now or in the future. This is <br />a reasonable assumption for deep well injection, land fills <br />and sale of brine and salts for use by a chemical plant. This <br />has also been assumed for sale of the treated water to a <br />utilitv plant, in which case it is assumed the plant would <br /> <br />~ le.:card Rice Co.13u!ling Water Engineers. Inc. <br />,", ~,) <br />-... <br />