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Homestake Mining Company June 17,2019 <br /> Regular If 12d)Operation Reclamation Permit Application Package <br /> Project Name: Pitch Mine Reclamation Project-Reclamation Plan <br /> Date of Submittal: March 1,2019 <br /> File Name: SRCE_Version_1_4_1_016c_2019-06-06_amh_User 3 Updates.xlsm <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.xlsm <br /> Cost Estimate Type:Surety Cost Basis:Northern Nevada <br /> BuNdings&Foundation DemoNtion Cost Summary <br /> Labor Equipment Materials Totals <br /> Building Demolition Cost $0 $0 N/A $0 <br /> Wall Demolition Cost $0 $0 N/A $0 <br /> Slab Demolition $0 $0 N/A $6 <br /> Subtotal Demolition $0 $0 $0 $0 <br /> Cover Placement Cost $0 $0 N/A $0 <br /> Growth Media Placement Cost $0 $0 N/A $0 <br /> Ripping/Scarifying Cost $0 $0 N/A $0 <br /> Subtotal Earthworks $0 Ni $0 $0 <br /> Revegetation Cost $0 $0 $0 $0 <br /> TOTALS $0 $0 $0 $0 <br /> Buildings&Foundation-Calculations <br /> Building Volume Calculations <br /> Using Means Heavy Construction Cost Data(2004)calculates cubic feet from building dimensions <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 Data(2004)adjusted for supervision <br /> (addressed in Misc.Costs)and Davis-Bacon Wage Rates <br /> Demolition costs do not include hauling or disposing if debris-Use Waste Disposal module <br /> Slab Demolition Calculations <br /> Minimum 1 hr excavator time to[slap demolrtio^ <br /> Cover Volume Calculation <br /> Foundation area x cover thickness <br /> If"Bury in Place"is selected as slab demolition method cover thickness is adjusted such that <br /> total cover(cover+grovnh medial equals value entered in"Minimum thickness of cover over unbroken slab"cell abode <br /> Ripping/Scarifying Calculations <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 dimensions <br /> Total hours=(Travel distance+Grader productivity)+(Number of passes x Grader maneuver time) <br /> R"etation <br /> Minimum 1 acre revegetation crew time per area <br /> Page 2 of 6 HOMESTAKE MINING COMPANY <br /> 67 of 164 <br />