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Minerals and Geology (DMG) of a reportable spill within the mined land permit area using the <br />same timeframe required by the permit, license, notice, statute, rule or regulation governing the <br />reporting of the spill to the other appropriate agency. Notice of a reportable spill shall be <br />FAKd to: ~neral~rogram Supervisor, Division ofMrnerk7s an eology~'AX (303J832- <br />8106. The FAX shall include acall-back number of a responsible company official for DMG <br />staff to use as a contact. " <br />2. Demolition Costs -Existing Structures :VCI has specified that "permanent building pemuts <br />were obtained for this location for existing structures, including the Concrete Plant, Scale-House, <br />and Shop. Additionally, these structures were established under the Weld County Use by Special <br />Review Process and specifically provide for these structures under this modified zoning process." <br />The Division concurs with this assessment. However, the operator has also specified that the <br />landowner's desires conform to this understanding, and correspondence of which will be <br />provided under separate cover. Please provide written evidence of concurrence from the <br />landowner (Doeringsfeld & Aras Partnership) for zoning of industriallcommercial use for these <br />particular azeas. <br />3. Excavation Slope Steepness -Setback Distance :VCI has proposed that extraction will <br />occur to within 25 feet of well heads and facilities, and be backfilled as soon as practicable to <br />create a 100 foot radius azound the well head for future well activities. In addition, the operator <br />has provided "no negative effect" letters per Rule 6.4.19(c) from gas structure owners Duke <br />Energy, Merit Energy Company, and Matrix Energy, LLC. <br />VCI has also proposed that excavation slopes be no steeper than 1.25H:1V and to maintain a <br />minimum 10 foot setback from the crest of the excavation slope and any potentially affected <br />structure. Based on the slope stability information and analyses provided, it should be noted that <br />the Division will consider mining at an excavation slope of steeper than 1.25H:1 V within 80 feet <br />(two-times the anticipated maximum pit death) of a structure (except for any structure owned by <br />Duke Enerey. Merit Energ~Company, and Matrix Energy, LLCI. to be a serious violation of the <br />Hermit that will initiate an immediate enforcement action.) <br />6. Stockpiled Overburden : In conformance with Rule 6.4.4, please clarify the current or <br />planned volume, whichever is greater, of stockpiled overburden that will need to be backfilled <br />into the pit during final reclamation, and provide the average push/haul distance to move the <br />stockpiled overburden into the pit. (The volume of overburden that will be used to backfill Tract <br />D maybe excluded from this volume estimate.). For clarification of this item, the Division <br />considers any non-topsoil or non-saleable earth material generated during extraction of aggregate <br />materials to be overburden. An itemized cost for backfilling the stockpiled overburden will need <br />to be included in the revised reclamation cost estimate. Please respond. <br />9. Maximum Disturbance -Exposed Higbwall: VCI has indicated that the maximum number <br />of lineaz Feet of exposed, advancing pit highwall throughout the remainder of the operation will <br />be 8001ineaz feet, at an average height of 25 feet. Unless otherwise specified by VCI, the 800 <br />Linear feet of exposed highwall will become an enforceable component o£the mine and <br />reclamation plan. If a criteria other than 8001ineaz feet is preferred by VCI, please specify the <br />