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Homestake Mining Company June 17,2019 <br /> Regular(112d)Operation Reclamation Permit Application Package <br /> Project Name: Pitch Mine Reclamation Project-Reclarr <br /> Date of Submittal: March 1,2019 <br /> File Name: SRCE_Version_1_4_7_016c_2019-06-06_aml <br /> Model Version:Version 1.4.1 <br /> Cost Data:User Data <br /> Cost Data File:SRCE_Cost_data-USR_1_12 2019-05-14. <br /> Cost Estimate Type:Surety Cost Basis:Northern N <br /> Buildings&Foundation Demolition Cost Summary <br /> Budding Demolition Cost <br /> Wall Demolition Cast <br /> Slab Demolition <br /> Subtotal Demolition <br /> Cover Placement Cost <br /> Growth Media Placement Cost <br /> Ripping/Scarifying Cost <br /> Subtotal Earthworks <br /> Revegetation Cost <br /> TOTALS <br /> Buildings&Foundation-Calculations <br /> Using Means Heavy Construction Cost Data(2004)calculates c <br /> Estimage slab thickness and wall thickness if not known <br /> Assumes that all concrete slabs are reinforced <br /> Productivity for crew from Means Heavy Construction Cost C <br /> (addressed in Misc.Costs)and Davis-Bacon Wage Rate <br /> Demoltion costs do not include hauling or disposing if debris <br /> Mini—m'h,e.cavator time for slap demolition <br /> Foundation area x cover thickness <br /> If"Bury in Place"is selected as slab demoldion method cov <br /> total cover(cover+growth media)equals value entered <br /> Flat area width=Final flat area+Average long dimensions <br /> Number of passes=Flat area width+Grader width <br /> Travel distance=Number of passes x Average long dimension <br /> Total hours=(Travel distance+Grader productivity)+(Number <br /> Minimum 1 acre revegetation crew time per area <br /> Page 5 of 6 HOMESTAKE MINING COMPANY <br /> 70 of 164 <br />