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• <br />Table 3 (continued) <br />Comparison of Water Quality Standards with Analyses from Rollins Sandstone Monitoring Sites <br />(All results mg/L unless stated otherwise, and all metals are dissolved) <br /> CDMG Material Balance Standards CDPHE Rollins Sandstone Monitoring Sites <br /> Domestic, Ground Water <br /> Irri anon A ricul[ttre Class 1 Standards RSS N-Decline RSN UTL <br />Lithium 2.5 0.09 0.07 0.18 0.11 <br />Manganese 0.2 ®pH <6.5 0.2 0.05 0.05` ,0.2° 0.016 0.023 0.011 0.037 <br />Mercury 0.002 0.002` , O.OI° <0.00005 <0.00005 <0.00005 60.00005 <br />Molybdenum 0.1 <0.005 <0.005 <0.005 <0.005 <br />Nickel 0.2 (~ pH <6.5 0.2 0.2° <0.002 <0.002 <0.002 <0.002 <br />Selenium 0.02 0.02 0.01 0.01` , 0.02° <0.002 <0.002 0.002 <0.002 <br />Silver 0.05 0.05 <0.00002 <0.00002 <0.0002 <0.00002 <br />Thallium <0.001 <0.001 <0.001 GO.OOI <br />Uranium <0.001 <0.001 <0.001 <0.001 <br />Vanadium 0.1° 0.010 0.008 0.010 0.010 <br />Zinc 2 5 5` , 2° 1.24 0.159 0.019 0.045 <br />° For TDS < 500 mglL, the maximum TDS is 400 mg/L or I.25 • background, whichever is least restrictive. For 501 - 10,000 mg/L, the standard is 1.25 • the background. <br />n Agricultural Standards <br />° Human Health Standards <br />a Nitrate + Nitrite-N <br />13 <br />