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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />TABLE 5.3 (continued) <br /> <br />(b) Oranium level in surface waters shall be maintained at the <br />lowest practicable level. <br /> <br />(c) !n no case shall uranium levels in waters assigned a water <br />supply classification be increased by any cause attributable <br />to municipal, industrial, or agricultural discharges so as <br />to exceed 40 picocuries per liter (pCi/l) or naturally- <br />occurring concentrations (as determined by the State of <br />Colorado), whichever is greater. <br /> <br />(d) ln no case shall uranium levels in waters assigned a water <br />supply classification be increased by a cause attributable <br />to municipal, industrial, or agricultural discharges so as <br />to exceed 40 pCi/l where naturally-occurring concentrations <br />are less than 40 pCi/l. <br /> <br />ORGAN1CS <br /> <br />All waters of the San Juan/Dolores River Basins are subject to <br />the following standards for organics. (Discharges regulated by <br />permits, which are within the permit limitations, shall not be <br />subject to enforcement proceedings under these standards). <br /> <br />(a) The organic substances listed below along with concentra- <br />tions listed as assigned as basic standards intended to <br />protect all waters in the San Juan/Dolores River Basins: <br /> <br />Parameter <br /> <br />Aquatic Life <br />mg/l <br />0.000003 <br />0.000003 <br />0.000001 <br />0.000004 <br />0.000001 <br />0.00001 <br />0.00003 <br />0.000001 <br />0.000005 <br />0.0001 <br />0.000003 <br />0.0001 <br /> <br />Water Supply <br />mg/l <br /> <br />Aldrin <br />Dieldrin <br />DDT (DDD & DOE) <br />Endrin <br />Heptachlor <br />Lindane <br />Methoxychlor <br />Mirex <br />Toxaphene <br />Demeton <br />Endosulfan <br />Guthion <br />Malathion <br />2, 4-0 PCB <br />(POlychlorinated Biphenyls) <br />Chlorphenol <br />Monohydric phenol <br />Benzidine <br /> <br />0.0002 <br />0.004 <br />0.1 <br /> <br />0.005 <br /> <br />0.000001 <br />0.001 <br />0.5 <br />0.0001 <br /> <br />0.001 <br />0.001 <br />0.00001 <br /> <br />5.0-16 <br />