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<br />C <br />• <br />West Elk Mine 2006 Annual Hydrology Report <br />Table 9 <br />CDPS Effluent Limitations for the WWTP (007A) <br />n.a. -not applicable <br />Parameter 30-Day Average 7-Day Average Daily Maximum <br />TSS (mg/1) 30 45 n.a. <br />TDS (mg/1) n.a. n.a. Report <br />pH 6.5-9.0 6.5-9.0 6.5-9.0 <br />Oil and Grease No Visible Sheen No Visible Sheen No Visible Sheen <br />BOD (mg/1) 30 45 n.a. <br />Fecal Coliform (col./100 ml) 6000 12000 n.a. <br />Total Residual Chlorine (mg/1) n.a. n.a. 0.5 <br />December 2007 <br />33 <br />HydroGeo, Inc. <br />