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<br />"".... <br />~ <br />00 <br />c,;l <br /> <br />Table 4-4 shows ranges of the latest water quality data for the upper <br />and lower aqui~ers in the Piceance Creek Basin ?~blis~ed by the u.S.G.s.8. The <br />wide spread between the high and low values is evident. For the lower <br />aquifer we have shown in the s~~e table mean ~alues determined by Rio Blanco <br />from a large number of analyses of water under the C-a site. Their ranges, <br />which are not shown, are similarly as broad as those of ~he U.S.G.S. <br /> <br />TABLE 4-4. TYPICAL WATER QUALITY FOR AQU:FIERS IN <br />PICEANCE CREEK aASW, COLORADO <br /> <br />Concentration (mg/l unless noted) <br /> <br />Consti tuent <br /> <br />Upper Mine ~uifer <br /> <br />,- <br />Lower Mine Aquifer <br /> <br />Sulfate <br /> <br />---- <br /> U.S.G.S. Rio Blar.co <br /> 8 9 a <br /> Range Mean U.5.G.S. !\ange <br /> ----- ..----- <br />350-2100 482 265-4300 <br />< 0.16-11 0.3 .05-12 <br />5.4-52 35 4-.28 <br /> 0-53 0.9 1)-360 <br />4.1-151 12 1-700 <br />3.1-19 0.4 6.5-45 <br />4.2-54 52 1. 9-29 <br /> 10-19 26 2-19 <br />200-780 212 143-2320 <br />< 5-370 325 < 4-350 <br />750-1800 905 356-5747 <br />8.3-8.9 6.8 8.3-9.3 <br /> <br />Bicarbonat.e! <br /> <br />Saran <br /> <br />Calcium <br /> <br />Carbonate <br /> <br />C"loride <br /> <br />Fluoride <br /> <br />Xagnesi:.un <br />Silica <br /> <br />Sodium <br /> <br />Total Dissolved Solids <br /> <br />;;>fl (uni ts) <br /> <br />so <br />