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RUG 27 '9c 02~25PM RUMINISTRRTION <br />properly bermed. <br />Are additional controls necessary? N <br />Is the Materials Containment Plan adequate? Y <br />If no, explain. <br />Describe the wastewater treatment processes: <br />Precipitation and runoff are treated by <br />sedimentation ponds. Domestic wastewater is <br />treated with a small sctivated sludge plant. <br />SECTION D: OPERATION/MAINTENANCE: <br />9. Evaluate the treatment facility. Include in this evaluation a <br />discussion of any operation and maintenance problems: <br />The operator of the domestic wastewater plant ie <br />required by the permit to perform composite <br />sampling on the influent. Since the influent <br />consists mostly of shower water and the operator <br />"feeds" the plant pig food directly into the <br />aeration basin to maintain the activated sludge, <br />composite influent sampling would not appear to be <br />appropriate. The composite sampling method does <br />not indicate the entire loading on the plant. The <br />sampling is done prior to the pig food being added <br />directly to the aeration basin. Eighty-flue per <br />cent removal of BOD is also a requirement of the <br />permit. This requirement may also be unrealistic <br />considering the low BODs of shower water and the <br />periodic nature of round the clock shift work at a <br />coal mine. <br />outfall 006 had a violation on a sample collected <br />by MLRD. TS3 was 90 mg/1, permit parameter for <br />TSS is 70. The culvert decant device developed a <br />small leak which allowed s trickle of water to <br />enter the spillway of large angular riprap type <br />material. The spillway has a run of several <br />hundred yards prior to entering Roatcap Creek. It <br />is doubtful that any of the discharge reached the <br />creek. outfall 006 is served by one large pond <br />with r~o baffling and extensive sedimentation. <br />outfall 004 is served by a small settling pond <br />near the coal storage yard along Colo Highway 133, <br />This outfall had a violation recently; TSS was 35D <br />mg/1, permit parameter for TSS is 70 mg/1. The <br />outfall allows effluent to enter a large meadow <br />(2-3 acres) nearby. There ie no actual discharge <br />to state waters. The Farmer'a Irrigation Canal <br />and Lhe North Fork of the Gunnison River are both <br />nearby. Coal Yines could be observed in the <br />lowest part of the meadow. <br />F'. 6~9 <br />