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<br /> <br />water could be found by the time the evaporation ponds were <br /> <br />full, then one of the following options could be initiated: <br /> <br />nl <br />~ <br />fu <br />;~ <br />-.. <br />~ <br />~ <br />IG <br />I <br />, <br /> <br />~ <br />! <br />I ' <br /> <br />; lID <br />III <br />1m <br />1m <br />IG <br /> <br />! <br />!Ibl <br />-.. <br /> <br />1. Additional ponds could be constructed to pro- <br />vide the needed surface area to evaporate the <br />entire flow. <br /> <br />2. Part of the flow from the springs could be <br />bypassed down the river to the irrigators, <br />diverting only the amount of water to the <br />ponds that can be evaporated annually. <br /> <br />3. Construct a small desalting plant to treat <br />the flow of the springs that cannot be evap- <br />orated in the ponds. <br /> <br />POND SEALING ALTERNATIVE METHOD <br /> <br />At the present time, little geologic information is avail- <br /> <br />able on purgatory Flats. However, with the completion of the <br /> <br />soil borings for the Quail Creek Reservoir, the possibility of <br /> <br />a less costly alternative became apparent. Exhibit 2 - Figure <br /> <br />10 is the location and drill hole logs from the south dike of <br /> <br />the Quail Creek Reservoir which is less than one-half mile <br /> <br />north of the proposed evaporation ponds. The geology of the <br /> <br />area would indicate that the underlaying soil formations beneath <br /> <br />the proposed evaporation site are similar. You will note that <br />below the 20 foot level, permeabili ties range from 3 to 20 <br /> <br />feet/year. This would indicate that if a satisfactory natural <br />002578 <br /> <br />P6/L4 <br /> <br />CREAMER AND NOBLE ~..CONSUL T1NG ENGINEERS <br />