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• discharge are in balance in the enclosed ground water basin, that <br /> portion of the overburden aquifer which is recharged within the <br />proposed permit area transmits water with an average capacity of 10 <br />acre-feet/year. The discharge area is located within the 6,700 foot <br />piezometric contour show on Map 1, Twentymile Park Hydrology. <br />Quality of Subsurface Water <br />Ground water quality in the proposed permit and adjacent area <br />can be considered adequate for domestic use. Water from yells <br />contains relatively high amounts of dissolved salts and calcium- <br />carbonate hardness. Analyses of ground water samples taken by CYCC <br />indicate that subsurface water is alkaline, saline, and sufficiently <br />hard to restrict usage to stock watering, irrigation and limited <br />• domestic use. <br />Ground eater in the overburden aquifer contains primarily <br />sodium and bicarbonate ions, as show in Figure 8, Ground Water <br />Quality Trilinear Diagram. Average values of major constituents <br />were converted from milligrams per liter to milli-equivalents per <br />liter to shoe the relative concentrations and general water type in <br />the trilinear diagram. Co®on elements found in confined ground <br />eater are iron, manganese, sulfate and nitrate-nitrogen. Typical <br />characteristics of baseline ground water quality are calcium- <br />carbonate hardness of 261.4 mg/1, and total dissolved solids of <br />1,023.6 mg/1, and pH of 8.3. Water sampled from the undisturbed <br />• overburden aquifer is generally alkaline, moderately hard and <br />saline. <br />2.04-44 <br />