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<br />Mr. Paul Banks <br />November 5, 1996 <br />Page 3 <br /> <br />mine start-up. The plan also must define what will be <br />considered an impact to the well and what mitigation action <br />will be followed when it is determined wells have been <br />impacted. <br />7. The application states that the expected direction of ground <br />water flow is northward toward St. Vrain Creek. Do you have <br />any supporting data or is your assumption based solely on <br />topography? Please explain. <br />8. The Division is concerned that the dewatering operation can <br />potentially lower the water levels in the wetlands areas <br />identified on Map C-2. Please include an analysis of the <br />expected impact to the wetlands and the measures used to <br />mitigate this, if required. <br />9. For bond calculation purposes, please state if any permanent <br />buildings, equipment or concrete footings or slabs requiring <br />demolition will be utilized on-site. The Division will also <br />need volumes and push distances of stockpiled overburden and <br />topsoil to evaluate reclamation costs. Please clarify where <br />topsoil and overburden will be stockpiled and the average <br />depth of each material to be removed and replaced during <br />reclamation. <br />10. Exhibit S identifies several on-site and off-site structures <br />within 200 feet of the affected area. Pursuant to Rule <br />6.4.19, notarized agreements have been submitted for the oil <br />gas well owned by Vessels Oil Company, the Last Chance Ditch <br />and the Weld County Roads. A geotechnical stability analysis <br />for the Sinclair pipeline has been submitted to the Division <br />which has been reviewed by Allen Sorenson of the Division <br />(response enclosed). Please respond to Mr. Sorenson's letter. <br />11. In addition to the list in Exhibit S, the Division has <br />identified the following structures: <br />a) The Seep Drainage Ditch is situated 30 feet south of <br />Phase 3. <br />b) An irrigation ditch is located approximately 100' south <br />of the Seep Drainage Ditch <br />c) An irrigation ditch extends from the Last Chance Ditch <br />northward across the central portion of Phase 2 which <br />crosses County Road 26 3/4 and enters the land to the <br />north. Zs this one of the laterals mentioned in the <br />application which will be relocated? <br />d) Power lines are located along County Roads 15 and 26 3/4. <br />The Division considers these as permanent man-made structures. <br />Please state whether mining will be conducted within 200 feet <br />of any of these structures. For those identified as such, <br />