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<br />Table 15 (CONn. Stream classifications and water quality standards Colorado <br /> <br />Basin: La Plata River, Mancos River, Numeric Standards <br />McElmo Creek, and San Juan River in Temporary <br />Montezuma and Dolores counties Inorganic Metals Modifications <br />Stream Seament DescriDtion Desia Classifications Phvsical and BiolOGical mall Ull/l Qualifiers <br />7. Mainstem of McElmo Creek from UP Aq Life Warm 2 D.O. = 5.0 mgll NH3 (ac) = TVS S = 0.002 As lch) = 50 Fe (chi = 10400 Se (chi = 20 f.~ <br />All met b;1r8 <br />the source to the Colorado/Utah Recreation 2 pH = 6.5-9.0 NH3 lch) = 0.02 B = 0.75 Cd (ch) = 5 Pb (ch) = 50 Ag lch) = 0.15 Tree un <br />border. Agriculture F.Coli = 20001100 ml Clz lac) = 0.019 NOz = 0.05 Crlll (ch) = 100 Mn (chi = 1000 Zn (ch) = 100 otherwi~'\ <br /> CI2 (ch) = 0.01; CrVI (ch) = 25 Hg Ich) = 0.05 noted. CJ1 <br /> CN = 0.005 Cu (ch) = 19 Ni (ch) = 200 CJl <br /> i-" <br />8. All tributaries to McElmo Creek and UP Aq Life Warm 2 D.O. = 5.0 mg/l <br />the San Juan River in Montezuma and Recreation 2 pH = 6.5-9.0 <br />Dolores counties, including all lakes Agriculture F.Coli = 20001100 ml <br />and reservoirs, except for specific <br />listings in Segments 2 through 7. <br />9. Mainstem of the San Juan River in Aq Life Warm 1 D.O. = 5.0 mg/l NH3 (acl = TVS 5 = 0.002 As (ac/ch) = TVS Cu (ac/ch) = TVS Se (ac/sh) = TVS <br />Montezuma County. Recreation 1 pH = 6.5-9.0 NH3 {chI = 0.06 B = 0.75 Cd {ac/chl = TVS Fe (ch) = 2200 (Tree) Ag (ac/chl = TVS <br /> Agriculture F.Coli = 200/100 ml elz (ac) = 0.019 NOz = 0.5 Crill (aclch) = TVS Ph (ac/ch) = TVS Zn (ac/ch) = TVS ';..' <br /> CI2 (chI = 0.011 CrVI (ac/ch) = TVS Mn (ch) = 1000 (Trec) <br /> CN = 0.005 Hg (chi = 0.01 (Tree) <br /> <br />'" <br /> <br />Taken from Colorado Water Quality Control Commission 1993b <br /> <br /> <br />