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Colowyo requests that the Division perform the bond calculation using your reclamation cost computer <br />program. Adequate information for bonding purposes should be contained within this letter. Please note <br />that in the 1996 drilling program permitted under MR-40, eight (8) of the eighteen (18) holes permitted <br />were not drilled. All eight holes(97-31, 97-40, 97-41, 97-42, 97-43, 97-44, 97-45, 97-46) were located in <br />active mine locations and so did not have drill site reclamation costs associated with each drill site. For <br />plugging bonding purposes, each hole had an average depth of 520 feet at 5.625 inch hole diameter. <br />Colowyo would like for the Division to credit the 1997 exploration program with this unused bond dollar <br />amount from the 1996 exploration program. <br />In 1997 exploration program proposed N this Minor Revision, six (6) locations (97-11, 97-18, 97-19, 97-24, <br />97-25, 97-27) out of the twelve (12) drill locations will require drill site reclamation. The other six (6) <br />locations (97-12, 97-20, 97-21, 97-22, 97-23, 97-26) will not require site reclamation due to their locations <br />in active pit areas that already have topsoil stripped or else have been partially mined. A disturbance of about <br />0.115 acres per site (50'x100"') is anticipated. Maximum mud pit dimensions on each site will be 15' wide <br />by 30' long by 7' deep. The anticipated total drill location disturbance is 0.69 acres. <br />No new access road construction will be required to access any of the drill locations. The six (6) drill sites <br />located outside of the active mining areas, will be accessed via existing roads which will require very minimal <br />upgrading work. Upon the completion of drilling activities, road reclamation work will only be required on <br />three (3) of the sites, and will consist of scarifying the roads (usually performed by two passes of a dozer <br />with ripper shanks lowered) and then reseeding the roads (hand broadcast else rangeland drill). The following <br />is a summary of road lengths. <br />Drill Location Linear Feet of Road <br />97-18 3100 <br />97-19 700 <br />97-27 4100 <br />Roads will be constructed approximately ] 0 to 12 feet wide. <br />Drill hole plugging will be required on a total of 6,240 feet of pilot and core hole drilling with an average <br />hole diameter being 5.625 inches. <br />Upon review and consensus between Colowyo and the Division on the Division's calculated bond amount, <br />Colowyo will add this bonding cost to the reclamation bond currently in place. <br />Please place this minor revision into the Colowyo Permit, Volume 5, Revisions for Third Five-Year Term, <br />Exhibit 20. <br />In addition to the above mentioned twelve hole drilling program, and as part of the ongoing mining activities, <br />Colowyo will be performing additional drilling in the immediate pit areas. This drilling will be undertaken <br />by the same two rubber tire drilling rigs and crews that will complete the twelve hole program. Information <br />2 <br />