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current permit area. Fill material from a low hill within the UTL facilities area was used for construction of a new <br />access road and reclamation backfill in the South Portals area, as approved in PR -3. Reclamation of the South <br />Portals area is completed. <br />Temporary sediment and drainage control structures including diversion and collection ditches and sediment <br />ponds were all reclaimed with exception of Pond 9 and associated drainage, which is pending approval of TR -63. <br />With PR -5, SCC provided demonstrations that vegetation cover is sufficient to ensure that sedimentation from <br />reclaimed areas does not exceed that from adjacent undisturbed areas. SCC has demonstrated that the untreated <br />drainage from Roadside North Portal, Cameo Refuse Disposal Areas and Cameo Borrow Areas will contribute <br />fewer suspended solids to streamflow or runoff outside the permit area than untreated drainage from the natural <br />surrounding premining area. This was accomplished by a soils loss comparison between these disturbed locations <br />and corresponding non - disturbed reference areas using the Universal Soil Loss Equation. SCC has also <br />adequately demonstrated that the quality of untreated drainage from these disturbed areas meets the State and <br />Federal water quality standard requirements applicable after the sedimentation ponds and other drainage control <br />features are removed, for receiving streams. <br />With PR -5 SCC was approved to make changes to the final reclamation plans of Ponds 6, 10, and 11, Coal <br />Gulch, the Coal Canyon drainage and Roadside North Portal. As part of the design for CRDA -2, the Coal <br />Canyon drainage channel was permanently realigned to provide a more uniform, controlled flow between CRDA <br />land 2. Sections of the Coal Canyon permanent channel diversion near Ponds 6 and 10, and the Coal Gulch <br />drainage in the vicinity of Pond 11 were originally planned and approved to be re- aligned and modified in <br />conjunction with removal of the ponds. The Coal Gulch and sections of Coal Canyon drainage were going to be <br />diverted back through the pond locations which would approximate these drainages original configuration. <br />However, during the review process and after meeting with a representative from the U S Corp of Engineers it <br />was recommended that Coal Canyon drainage and Coal Gulch remain in their current configurations. These <br />drainages are stable in their current position and according to Corp of Engineers personnel realignment for the <br />sake of routing the drainage back to its original contours would not be a justifiable reason for issuing a Corp <br />Permit. The Division concurred with not re- disturbing the alignment of Coal Canyon and Coal Gulch and with <br />PR -5 approval left these drainages in their present alignment and configuration. <br />Several permanent ephemeral drainage channels were originally approved to be constructed across the North <br />Portal facility reclaimed area in association with removal of the temporary upland diversion and Sediment Pond <br />13. However, with design changes approved with PR -5, the upland diversion (West Diversion Ditch and East <br />Diversion Ditch), will remain as permanent features as depicted on Exhibit 8C of the permit application. Land <br />owner consent has been obtained and is presented as Appendix pages A14 -5 -42 and A14 -5 -43. Retention ofthe <br />upland diversion resulted in a modified design requiring fewer constructed ephemeral drainages across the North <br />Portal reclaimed area. This modification reduced the amount of additional disturbance of the already stable and <br />vegetated site. Pond 13 has been backfilled and fully reclaimed. The small berms running along Coal Creek and <br />ditch D10, as depicted on Exhibit 8C, are stable and well vegetated and will remain intact as permanent features <br />thus further reducing the unnecessary redisturbance of the North Portal facility reclaimed areas. <br />14 <br />