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• • iii iiiiiiiiuiiiiii <br />TR9PPER DINING INC. 999 <br />June 27, 1986 <br />CERTIFIED P176279485 <br />Mr. Mike Long <br />Colorado Mined Land Reclamation Division <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, CO 80203 <br />Dear Mike: ~' / I <br />`~ <br />_ - ,. <br />JAN 'i ~ i5~6 <br /> <br />SUBJECT: Minor Revision MR-39, File No. C-010-81, Request to Leave Unsalvage- <br />able Topsoil in Ashmore Pit. <br />During your inspection of Trapper Mine on 6/25/86, we discussed not stripping <br />topsoil frets portions of the Ashmore Pit area. Per your request, we are sub- <br />mitting a minor revision requesting permission [o leave [his topsoil due to <br />safety considerations and the quality of topsoil. <br />The enclosed map outlines the approximate area of topsoil to be left and the <br />soil type. As can be seen from the map, and also your field inspection, this <br />area consists of extremely rocky, shallow soils with outcrops of sandstone <br />interspersed with erosion channels. Additionally, the area is extremely <br />steep, presenting a safety hazard to equipment attempting to strip topsoil. <br />As outlined in Section 4.9.1 of our permit, when these conditions are encoun- <br />tered, topsoil will not be salvaged. " <br />The area proposed for exclusion from stripping of topsoil totals approximately <br />21 acres. This area accounts for Less than 22 of the total topsoil [o be <br />stripped in Ashmore Pi[ in 1986 (Attachment 1). Field surveys show [hat <br />approximately 4,130 cubic yards of low quality topsoil will be lost from the <br />area. Thia equates to an overall depth of only 1.44 inches across the 21-acre <br />area. This amount will cover only three acres of rangeland at [he permitted <br />replace~sent depth of ten inches. The area south and west of the proposed <br />exclusion area has topsoil resources which are more than adequate to offset <br />[his topsoil loss. <br />As we discussed, this exclusion area is a buffer zone at the end of the pit. <br />It is probable [hat most of this area will not be disturbed. However, if <br />reclamation of these acres is required, sufficient inventory exists in stock- <br />piles adjacent to the site and in the current year's stripping in Ashmore Pit. <br />Our survey calculations show that an excess of 30,000 yards will be hauled <br />from the area just south and west of [he proposed exclusion area. This is <br />sufficient yardage [o reclaim the proposed exclusion area at an average depth <br />of [en inches. <br />cont. <br />P.O. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />