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L.1.5.3 Rip Rap -Armored Sections <br />Excavation (at $4.80/cy) _ $9.22/ft <br />Rip rap (at $19/placed cy) _ $21.66/ft <br />Total Unit Cost = $30.88/ft <br />L.1.6 Ripping <br />Equipment cost: <br />1 - Caterpillaz D-8 Dozer @ $135/hour <br />Total hourly cost = $135/hour <br />Production Rate: 1.5 acres/hour per previous estimates <br />Unit Cost = ($135/hour)(1.5 acres hour) _ $90/acre <br />L.1.7 Reseeding <br />Equipment cost: <br />1 -John Deere 8300 Tractor w/Land Plane @ $75/hour <br />Total hourly cost = $75/hour <br />Production Rate: 1 acre/hour per previous estimates <br />Material cost: <br />Seed Mix = $6.77/Ib. <br />Application Rate = 121b./acre <br />Unit Cost = ($75/hour)/(1 acre hour) + ($6.77Ab.)(121b./acre) _ $156.24/acre <br />L.2 Mine Facilities <br />L.2.1 Tailings Disposal Area and Associated Facilities <br />L.2.1.1 Tailings Surface Reclamation <br />22.6 acres require reclamation per 2003 survey at an assumed average <br />thickness of 4 feet. <br />Backfill Placement (per L.1.1): <br />(22.6 acres)(43,560 ft2/acre)(4 ft)(lpcy/27ft3) = 145,845 pcy <br />Subtotal = (145,845 pcy)($1.21/pcy) _ $176,473 <br />Backfill Grading (per L.1.2): <br />Subtotal = (22.6 acres)($260/acre) _ $5,876 <br />Topsoil replacement (per L.1.3) <br />Subtotal = (22.6 acres)($2,880/acre) _ $65,088 <br />Battle Mountain Resources, lnc. 37 Telesto Solutions, /nc. <br />P:WVj,X45\212-Newmonl(SanLUis)VSaN.uisNCrmLL Amendment- West Pit Mm~agement\V4ltepoM1&PDFS\PCm~ilAmendmenl_v6.tloc ~CIOlJQY2~6 <br />