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r.. <br />TABLE 3 <br />Yampa Valley Coal Company <br />Selected Nater Quality Data Sites <br />(Upstream) <br />(14, 18, 1001) <br /> 75% of No. No. <br />Parameter Units No. Mean Max. Standard Exceeding Standard Exceeding <br />Arsenic, Tot ug/L 98 1.6 5 4 1 5 0 <br />Arsenic, TR ug/L 16 1 1 4 0 5 0 <br />Lead, Tot ug/L 98 42 370 19 >23 25 19 <br />Lead, TR ug/L 15 20 20 19 >0 25 0 <br />Copper, Tot ug/L 131 18 60 17 11 22 6 <br />Copper, TR ug/L 15 1D 10 17 0 22 0 <br />• <br />• <br />