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1 ' <br /> "-4 COLORADO LEGACY LAND <br /> M I <br /> Exhibit E-Reclamation Plan(Rule 6.4.5): <br /> The operator has provided Figure E-2 to address the Division's adequacy item#3 (from the preliminary Please note that in response to this adequacy review,figure numbers have changed,Figure E-2 is now Figure E-4. CLL has <br /> 1 adequacy review letter).However,not all components requested were added to the map.Please revise updated the map to show locations of the major fault systems as requested,however the groundwater gradients on this figure <br /> Figure E-2 to include"any significant fracture/fault systems and other potential groundwater migration clearly show that a potential groundwater migration pathway does not exist when the mine pool is dewatered to 150 feet below <br /> pathways that intersect the mine workings,and the point at which any such pathways intersect the creek Steve (or greater). CLL has maintained this dewatered mine pool condition since taking ownership of the site and intends to <br /> system between the mine site and Ralston Reservoir". maintain a dewatered mine pool consistent with the reclamation plan described in Exhibit E. Please review responses to <br /> Comment#13 and Comment#14 below for additional discussion. <br /> Exhibit E-Reclamation Plan(Rule 6.4.5): <br /> In its response to the Division's adequacy item#4,the operator stated the diversion pipeline and two The operator is proposing to leave the cutoff wall,ripap/grouted boulder areas,and bypass pipeline in place.These structures <br /> bollards which hold the pipeline in place will be removed for reclamation.However,the operator did not were previously permitted by USACE as permanent features(USACE File#NOW-2011-1353 DEN)and constructed by the <br /> 2 describe how the upgradient cutoff wall and riprap/grouted boulder areas along the creek will be previous operator,Cotter Corporation(Cotter). <br /> reclaimed.Is the operator proposing to leave these structures in place for final reclamation?If so,please <br /> describe how leaving these structures would be in compliance with county requirements and with the After the alluvial valley exaction is complete and the corresponding disturbed areas are reclaimed,the bypass pipeline and sump <br /> applicable regulatory agencies(e.g.,CDPHE,USACE,USFWS).Additionally,please explain how leaving system may be removed. CLL proposes allowing Ralston Creek to flow through the sluice gate at the cut off wall into its natural <br /> these structures would support the proposed plan to remove the bypass pipeline and re-establish creek channel while the bypass pipeline infrastructure remains in place. This would allow CLL to monitor the water quality in Ralston <br /> flows across the mine site for final reclamation. Creek while the bypass pipeline infrastructure is still intact. <br /> Exhibit E-Reclamation Plan (Rule 6.4.5): <br /> The operator is proposing to remove the bypass pipeline and re-establish creek flows across the mine site Revised as requested. The operator is proposing the leave the bypass pipeline in place. This allows CLL to reestablish flows in <br /> 3 once the alluvial valley excavation project has been completed.Does this proposal include plans to keep the Ralston Creek with a readily accessible contingency system in place. Additional text has been added to the end of Section EA to <br /> bypass system readily accessible,at least for a particular length of time after flows have been re- describe CLL's proposed approach. <br /> established,so the system could be reinstalled in the event that surface water monitoring at SW-BPL shows <br /> impacts from the mine site? <br /> Exhibit E-Reclamation Plan (Rule 6.4.5): <br /> Please provide a detailed grading plan for the valley,showing how the valley floor will be reconfigured to Revised as requested. Additional information has been added to Exhibit E to discuss CLL's reclamation plans,however the full <br /> establish positive drainage to the creek.(Please keep in mind,if the grading plan changes significantly from extent of the alluvial valley exaction is not currently known,therefore CLL cannot present a detail grading plan at this time. CLL <br /> 4 is committed to reclaiming all disturbed areas in the permit bounds and shall prepare a site-specific lantin and re radin <br /> what is approved in this application,it can be updated through the Technical Revision process.) If on-site g P boundary P P P planting regrading <br /> material will be used to fill/grade the valley for reclamation,please describe exactly where these materials plan once the excavation project is complete. <br /> will be derived from on site,and how the operator will confirm the materials are"clean"for use in <br /> reclamation. <br /> Exhibit E-Reclamation Plan(Rule 6.4.5): <br /> 5 The operator is proposing to use on site materials for growth medium in reclamation,rather than The text in Section E.4 has been revised to include language previously approved in Technical Revision#14 which permits CLL to <br /> importing this material.Please specify exactly where the growth medium will be derived from on site and stockpile'clean'alluvial valley soils and use them as fill or growth media for reclamation. Soil testing is not required because <br /> how the operator will confirm this material is suitable for use in reclamation.Will any soil tests be these soils have been used as fill/growth media on the site previously(on both waste rock piles). Both waste rock piles are <br /> conducted? successfully reclaimed with a healthy vegetative cover. <br /> Exhibit E-Reclamation Plan (Rule 6.4.5): <br /> 6 Please include the proposed revegetation plan,including the specific seed/plant mixtures to be used for The text in Section E.4 has been revised to include the previously approved seed mix from Technical Revision#23. <br /> each area.Each seed mixture must include the plant species,the planting rate for each species(in pounds <br /> of pure live seed per acre or number of trees shrubs per acre),and the application method. <br /> Exhibit E-Reclamation Plan (Rule 6.4.5): <br /> 7 Please include a detailed plan for abandoning the 13 monitoring wells on site,which includes the diameter Revised as requested. Additional information has been added to Section E.6 of the document to discuss the well abandonment <br /> and depth of each well,a description of the proposed plugging materials to be used,and the type and process. The diameter and total depth of each well is shown on Table E-3 of Amendment O5 and in each of CLL's quarterly <br /> quantity of equipment to be used.This information is needed in order for the Division to calculate the environmental monitoring memos. <br /> reclamation bond. <br /> PAGE 3 OF 12 <br />