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Table 2: In- Stream Water Quality Standards Compilation <br />In Stream Water Quality Standards <br />KEY <br />Federal <br />TVs, dissolved <br />Parameter <br />Limit <br />Units <br />pH <br />6.5 -9 <br />NH3 <br />TVs <br />C12 <br />0.011 <br />mg /L <br />CN <br />0.005 <br />mg /L <br />S <br />0.002 <br />mg /L <br />B <br />0.75 <br />mg /L <br />NO2 <br />0.05 <br />mg /L <br />NO3 <br />100 <br />mg /L <br />As <br />0.34 <br />mg /L <br />Cd <br />0.000411 <br />mg /L <br />Crlll <br />0.071679 <br />mg /L <br />CrVI <br />0.011 <br />mg /L <br />Cu <br />0.008649 <br />mg /L <br />Pb <br />0.002407 <br />mg /L <br />Mn <br />1.627311 <br />mg /L <br />Ni <br />0.050241 <br />mg /L <br />Se <br />0.0046 <br />mg /L <br />Ag <br />7E -05 <br />mg /L <br />Zn <br />0.116772 <br />mg /L <br />TSS <br />20 <br />mg /L <br />Iron, dissolved <br />1 <br />mg /L <br />Cadmium, total <br />0.05 <br />mg /L <br />Copper, total <br />0.15 <br />mg /L <br />Lead, total <br />0.3 <br />mg /L <br />Mercury, total <br />0.001 <br />mg /L <br />Zinc, total <br />0.75 <br />mg /L <br />Any parameter not highlighted means that this is a numeric standard from the CDPHE Stream Segment 9 list in <br />Table 1. All parameters highlighted in green are TVS (hardness based), using the Stream Segment 9 formulas. <br />Parameters in orange are Federal standards for metal mines and are not limited to any specific Stream Segment. <br />10 <br />