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Colorado Division of Minerals and Geology <br />ESTIMATING FORM - SEALING UNDERGROUND OPENINGS <br />Task #: 2 Prep. by: WHE Task Filename M306-2 <br />Dat e: 14-Jul-99 Permit #: M-77-306 Mine: Jd-9 Mine <br />-----____' -----___ --'----------'---- <br />Permit Action: General 172 bond review <br />________________________________________________ <br />Task Description: Seal and safeguard adit and vent holes <br />SOURCES FOR QUANTITY TAKE-OFFS 6 UNIT COSTS <br />___________________________________________ <br />Closure casts from Inactive Mine Program, contractor bids received <br />__________________________________________________________________ <br />Assume three vent holes at 7'diameter each <br />Adit dimensions are 9'H • 11'W, from mine plan <br />COST BREAKDOWN <br />Item Description ~ Unit Quantity E/Unit ~ Subtotal <br />Portal backfill 25' ~ cu. yd. 91.67 53.50 ~ 5320.85 <br />Vent seal w/prefab pannel ~ Al pannel 6.00 5663.00 ~ 53,978.00 <br />2 pannels per vent hole <br />3 vent holes <br />Steel I-Beam for pannels ~ ln.ft. 36.00 550.00 ~ 51,800.00 <br />1 beam/vent, 12'L each <br />3 vent holes <br />TOTAL COST Eb, 098.85 <br />