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III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the inspection <br />and the facts or evidence supporting the enforcement action. <br />It was noted that the Permit LD. sign at the entrance to the North Portal Area had blown over or been <br />knocked down. The sign will need to be replaced. <br />Roads <br />Drainage problems and resultant erosion associated with a segment of Light Use Road 1 above the RSRDA <br />soil borrow azea, and Haui Road 5 neaz the Xcel Dozer shed were cited in NOV CV-2002-019, and relevant <br />observations are described in a previous section of this report. <br />Rill erosion was observed along the segment of Light Use Road 1 between the R5RDA Soil Borrow Area <br />and the South Porta] Facilities Area, and maintenance is warranted. Specifically, water bars along this <br />segment of road that were removed to accommodate equipment traffic during cover soil hauling operations <br />need to be re-constructed. <br />At the North Decline, a culvert was recently installed to replace the road dip at the upper gate, per approved <br />minor revision. The road dip had required frequent maintenance. <br />Maintenance of straw bale checks and segment of berm is warranted at the lower dip section road crossing <br />on Coal Creek. <br />l~drologic Balance <br />RSRDA and South Portal Area <br />1 Apparent break in the disturbed area collection pipe system that conveys drainage from the South Mine <br />Portal Bench parking azea to Sediment Pond 8 is the subject ofNOV CV-2002-018, and relevant <br />observations aze described in a previous section of this report. <br />• A separate buried PVC pipe conveys disturbed azea drainage from a collection sump on a road segment <br />immediately west of the South Mine Portal Bench parking area, down to Sediment Pond 8. On <br />Monday, September 9, operator discovered that the pipe had become plugged, and storm flow over the <br />weekend had filled in the collection sump with sediment and runoff. Water level in the sump Monday <br />afternoon was approximately 12 inches below the top of the road berm, and water marks on the berm <br />indicated that maximum water level had reached approximately 6 inches below the top of the berm. <br />Operator employed a contractor to de-water and excavate sediment from the sump, and attempt was <br />made to open up the blocked pipe with high pressure hose, but the attempt was unsuccessful. As a <br />temporary measure, operator laid a 6 inch hose from the sump, through the road berm and down to the <br />rip-rapped collection ditch at the base of the slope, which leads into Pond 8. The hose had been <br />installed by Thursday, and was observed during re-inspection of the site on Friday morning. DMG <br />requests that permanent repairs or replacement of the buried pipe with an approved alternative <br />conveyance be implemented in a timely manner. I[ an alternative design is selected, appropriate <br />technical revision shall be submitted by September 30.2002, and installation shall be completed <br />within 20 days of final approval If operator chooses to repair the ezistiog pipe without <br />modification, the cause of the failure to function as designed will need to be assessed, adequacy of <br />the design confirmed, and repairs completed by October 15.2002. <br />Pond 8 contained a few puddles on Sept. 9, and Pond 9 held a shallow pool from storm runoff over the <br />weekend. <br />