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~ ~~ <br />4. The reclamation cost estimate to remove the East Taylor Pond <br />Ditch will be included in the Midterm Review response. <br />5. A response to this question is included in an enclosed revised <br />page which is to be inserted prior to the SEDCAD runs. <br />6. The 0-e inches of topsoil in the Borolls Rock Outcrop Complex <br />was not factored into the CP Factor Determination because the model <br />assumes this area is completely stripped of topsoil to the <br />underlying rock unit. This 56.1 acres plus the stripped 2.1 acres <br />of Campass give 58.2 acres of rock outcrop units used in the CP <br />Factor Determination calculation giving the CP Factor Actual of <br />0.05. <br />The following is a response to Item 3. of your June 15th <br />letter. <br />3. Enclosed, please find post mining drainage designs for six <br />ditches. These designs are calculated from a model based on a post <br />mining scenario which was also used to calculate both the Section <br />16 and West Pit Fill Riprap Channel Designs. This model is <br />extremely conservative (for example, CN=63) and please note that <br />all riprap designs are to be considered minimum designs. <br />These additional post mining drainage designs should be placed <br />into the Colowyo Permit, Volume 3, Exhibit 7, Hydrology <br />Information, Section 12, Post Mining Riprap Drainage Designs, 1995 <br />(Final East Pit Ditch, Prospects Ditch, Section 11 Ditch, west Pit <br />Ditch, Taylor Tributary Ditch, Gulch B or West Pit Fill Ditch). <br />A revised Table of Contents is enclosed and goes at the beginning <br />of Volume 3. <br />Thank you for your attention and patience in this matter, <br />please call if any questions arise. <br />Sincerely, <br />Juan Garcia <br />Sr Mining Engineer <br />Enclosures <br />xc: Moffat County <br />R.G. Atkinson <br />L.B. Gray (w\o <br />Central Files <br />Clerk <br />(w\o enclosures) <br />enclosures) <br />