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Table 1-52 (Continued) • <br />Tabulation of Mean Monthly Flow, TDS and Salt Load at Surface Water <br />Monitoring Site NPDES 002 (DA0002) <br />From January 1981 through September 1986, <br />Seneca II Mine, Routt County, Colorado <br />Mean Mean <br />Month Year Flow(cfs)1 x TDS(mg/1)2 = (Flow)(TDS)3 <br />November 1981 No flow 0.00 <br />1982 0.148 2543 376.36 <br />1983 0.256 2795 715.52 <br />1984 0.063 2638 166.19 <br />1985 No Flow 0.00 <br />1986 <br />December 1981 0.048 3023 145.10 <br />1982 0.128 2551 326.53 <br />1983 0.260 'L714 705.64 <br />1984 0.003 2740 8.22 <br />1985 0.086 2857 245.70 <br />1986 <br />1Mean monthly flow determined front continuous flow record except for 1981 <br />and 1986 which was estimated from weekly instantaneous flow measurements. <br />2Mean monthly total dissolved solids concentration determined from weekly <br />or monthly measurements. <br />3Flow(cfs) x TDS(mg/1) x 0.9847 = tons/year. <br /> <br /> <br />7-181 rievised 10/Oi/86 <br />