Laserfiche WebLink
Jared Ebert <br /> September 16,2019 <br /> Page 9 of 11 <br /> Al Response: Exhibit F has been revised to include revegetation to show the planting plan that was <br /> proposed previously, but inadvertently turned off with the previous adequacy review submittal. <br /> 3. Revised page G-3 indicates groundwater will be exposed as a result of wet mining the south cell <br /> (Phase 1). Please revise this page to reflect the propose plan to dewater this cell. <br /> Al Response: Exhibit G has been revised to remove the reference to wet mining. <br /> Adequacy Review of Exhibit 6.5—DRMS Internal Memorandum <br /> 1. The Applicant modeled the Figure C analysis with a 44 feet offset from the top of bank (tob) of the <br /> South Platte River to the top of the mine slope. The Exhibit C-3 Map indicates the Applicant modeled a <br /> 42 feet offset. Please explain this discrepancy and revise the Figure C models and/or the Exhibit C-3 <br /> Map accordingly. <br /> Al Response: The table on Exhibit C-3 has been corrected to show the 44-foot offset distance. <br /> 2. The Applicant modeled the Figure D analysis with a 35 feet offset from the pipeline easement to the <br /> top of the mine slope. The Exhibit C-3 Map indicates the Applicant modeled a 45 feet offset. Please <br /> explain this discrepancy and revise the Figure D models and/or the Exhibit C-3 Map accordingly. <br /> Al Response: The table on Exhibit C-3 has been corrected to show the 35-foot offset distance. <br /> 3. The Applicant modeled the Figure F analysis with a 35 feet offset from the power pole easement to <br /> the top of the mine slope. The Exhibit C-3 Map indicates the Applicant modeled a 45 feet offset. Please <br /> explain this discrepancy and revise the Figure F models and/or the Exhibit C-3 Map accordingly. <br /> Al Response: We have corrected the Exhibit C table, stability analysis, and cross sections to show that <br /> the modeled offset from the easternmost power pole is approximately 68 feet. <br /> 4. The Applicant modeled the Figure G analysis with a 53 feet offset from the Brighton Ditch to the top <br /> of the mine slope. The Exhibit C-3 Map indicates the Applicant modeled a 35 feet offset. Please explain <br /> this discrepancy and revise the Figure G models and/or the Exhibit C-3 Map accordingly. <br /> Al Response: The top bank of the Brighton Ditch is located approximately 53 feet away from the limit <br /> of mining excavation. The closest the Brighton Ditch is to the limit of mining excavation is at Section G. <br /> However, this distance between the ditch and limit of mining excavation varies substantially along the <br /> entire western parcel boundary of the west area. As a result, we elected to use the affected lands <br /> boundary (parcel boundary), which is relatively straight, as the feature from which we offset instead of <br /> the ditch. <br /> 5. The Applicant modeled the Figure H analysis with a 75 feet offset from the edge of Highway 7 to the <br /> top of the mine slope. The Exhibit C-3 Map indicates the Applicant modeled a 106 feet offset. Please <br /> explain this discrepancy and revise the Figure H models and/or the Exhibit C-3 Map accordingly. <br /> Aggregate Industries—WCF Inc <br /> 1687 Cole Blvd Suite 300 <br /> Golden,CO 80401 <br />