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1 <br />1 <br />Normal dewatering of Sedimentation Pond MB #2 occurs via an underdrain <br />system in the bottom of the pond. The underdrain flows into the outlet <br />control tower of the pond. All discharges from MB #2 occurred through the <br />normal dewatering outlet at discharge point 004. Analyses, as required <br />under NP DES Permit CO-0038776, show monitoring results from the discharge <br />from Sedimentation Pond MB #2 at Outfall 004 and are presented below. No <br />exceedences of the NPDES effluent limitations occurred during this quarter <br />from this outfall. <br />OUTFACE 0041 <br />Parameter Frequency Minimum Average Maximum <br />Flow Weekly 0.8 MGD --- 1.5 MGD <br />Total Suspended Solids Monthly --- --- 6.4 MG/L <br />Total Iron Monthly --- --- 0.34 MG/L <br />pH Weekly --- --- 7.4 SU <br />Oil and Grease Weekly ----no visible sheen ---- <br />Conductivity Monthly --- --- 285 umhos/cm <br />1There was only one week during the quarter during which Sedimentation Pond <br />MB #2 discharged. Therefore, only one measurement of total suspended solids, <br />total iron, pH and oil and grease were made. <br />A-2 <br />