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<br />16. The mine operator has reviewed the Division's comments on the drainage routing from <br />pond #3 to pond #4 and the response is as follows: It is the intent of the mine operator to <br />continue the use of the lower haul road fotht truck and car traffic to and from the shop <br />facility during and after mining use of the property. Therefore, in keeping with best <br />management practices, the operator proposes to install a shallow trapezoid ditch along both sides <br />of the haul road from pond #3 to pond #4. This ditch will measure minimally 1 foot across at <br />the bottom, 1 foot deep, and 5 five across as measured at the top of the ditch excavation. The <br />ditch will be lined with typar geotextile installed as described in paragraph 15 above if the ditch <br />excavation is in unconsolidated materials. If the ditch is cut into bedrock, rip-rap will be applied <br />directly on the bedrock. Rip-rap will be minimally eight inches up to one foot in diameter <br />applied to a depth of two feet. At a suitable catch point at the lower end of the east side of the <br />existing haul road but still above the inlet to sediment pond #4, a ditch control basin will be <br />constructed and lined with rip-rap to feed a 24" culvert set under the roadway with outlet into <br />sediment pond #4. The ditch on the west side of the haul road will be constructed to drain <br />directly into sediment pond #4. The ditches are designed to handle storm flows up tc 35 cfs and <br />stream velocities up to 8 fps. Asphalt water diversions may be placed on the paved s urface to <br />direct stotmflows to the west side of the haul road to further insure that road surface run off does <br />not cross Tunnel Drive. <br />17. The engineering design for channels and spillways will follow the general rule o1'thumb for <br />depth of placement. The filter blanket will be typar class A drainage geotextile instal led per <br />paragraph 15, with rip-rap applied directly over the geotextile at a minimal depth of two times <br />the diameter rip-rap. Diameter of rip-rap is determined by potential stream velocity, grade and <br />length of run of channel encountered at any particular location. In the event that the channel, <br />spillway (in the case of sediment ponds 2 and 3), or ditch is located on bedrock, rip-nip will be <br />applied directly without use of geotexitile. <br />19. Tezak Heavy Equipment Company, Inc., is committed to finalizing the road access <br />agreement with the City of Canon City and is working on a number of fronts to see this <br />doctttrtent completed and signed by all patties. An attorney for the City has been retained to <br />develop and present this document to City Council for approval within the next few weeks. The <br />writer has made every attempt to inform all parties of the importance of this agreement to the <br />mining permit amendment as written. It is understood that it is critical to the approval of the <br />permit amendment by the Division. <br />20. Itemized costs for various aspects of reclamation as requested: <br />Ripping and discing of compacted areas--assuming app. 30 acres of pit areas including in this <br />calculation @ $100/acre ...........................................................................................$3000.00 <br />Installation of highwall safety controls (fencing and signage), along app. 800 running feet of <br />highwall contact at $3.50/foot installed ...................................................................$2800.00 <br />6 <br />