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<br />Table 3 <br />Comparison of Water Quality Standards with Analyses from Rollins Sandstone Monitoring Sites <br />(All results mg/L unless stated otherwise, and all mewls are dissolved) <br /> CDMG Material Balance Standards CDPHE Rollins Sandstone Monitoring Sites <br /> Domestic, Ground Water <br /> Irri anon A riculmre Class 1 Standards RSS N-Decline RSN UTL <br />pH (Lab) (S.U.) 5 - 9 6.5 - 8.5"•` 8.3 8.7 8.3 8.2 <br />pH (Field) 9.62 9.1 8.43 8.71 <br />(S.U.) <br />Conductivity (Lab) 700 1580 2280 3220 3480 <br />(umhos/cm) <br />Conductivity (Field) 700 1467 1850 2800 2850 <br />(umhos/cm) <br />Temperature (°C) 17.9 14.0 18.6 I6.0 <br />Total Dissolved Solids 500 5000 250 500' 1110 1510 1930 2270 <br />Total Alkalinity 560 1050 1660 1430 <br />Total Hardness 37.3 23.4 13.9 18.7 <br />Bicarbonate 686 1100 2030 1740 <br />Carbonate <5 82.6 <5 <5 <br />Chloride 250 250 250 20 41 4 174 <br />Free Cyanide 0.2 0.2 0.20 <0.002 <0.002 <0.002 <0.002 <br />Fluoride 4` , 2s 1.28 2 4.36 2.05 <br />Dissolved Nitrate l00 10 l0`, 100bd <0.01 0.85 0.66 1.1 <br />Dissolved Nitrite 10 I 1` , 10" <0.01 <0.01 <0.01 <O.OI <br />Sulfate 250 250 220 19 <5 66 <br />11 <br />