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Closure Cost Estimate <br />Waste Rock Dumps <br />Project Name: Cross and Caribou Reclamation Estimator - Reclamation Plan <br />Date of Submittal: November 23 2021 <br />File Name: RND2_Cross And Caribou Reclamation Cost Estimator_REVB.xlsm <br />Model Version: Version 1.4.1 <br />Cost Data: User Data <br />Cost Data File: SRCE_Cost_Data_File_1_12_Std_2020.xlsm <br />Cost Estimate Type: Surety Cost Basis: Northern Nevada <br />Waste Rock Dumps - Cost Summary <br />Labor Equipment Materials Totals <br />Grading Costs $207 $305 N/A $512 <br />Cover Placement Cost $4,367 $12,985 N/A $17,352 <br />Topsoil Placement Cost $2,184 $6,492 N/A $8,676 <br />Ripping/Scarifying Cost $138 $204 N/A $342 <br />Subtotal Earthworks $6,896 $19,986 $0 $26,882 <br />Revegetation Cost $280 $100 $793 $1,173 <br />TOTALS $7,176 $20,086 $793 $28,055 <br />Waste Rock Dumps - Calculations <br />Regrading Volume Calculation Final Slope Area and Footprint Area Calculations <br />Regrading Push Distance Calculation Ripping/Scarifying Calculations <br />dozing distance:based on 2/3 final cut slope + 2/3 final fill slope (minimum = 50 ft)Minimum 1 hr ripping/scarifying time per dump <br />Slopes: <br />Number of passes = Final slope length ÷ Grader width <br />Travel distance = Number of passes x Mid-bench length <br />Total hours = (Travel distance ÷ Grader productivity) + (Number of passes x Grader maneuver time) <br />Minimum 1 hr <br />Flat Areas: <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 />Revegetation:Minimum 1 acre revegetation crew time per area <br />Figure 1 - Regrace Volume Calculation <br />Figure 3 - Final Slope Area and Footprint Area Calculation <br /> 21c 3 <br />2 c <br />Figure 2 - Dozing Distance Calculation <br />11/21/2021 <br />Copyright © 2004 - 2009 <br />SRCE Software. All Rights Reserved. Page 3 of 6 Waste Rock Dumps <br />I <br />•'1 (Lif\Hc ght; <br />S .. U r «-l;Vi~ =•h~ -~='-----_J[_ <br />Dozirig distanc;a • _ <br />I I I I I <br />~o.r. le> I 11 ~·,~(I'>~•-: .,.,.,,.,,1 <br />------ <br />-------- <br />I 7 <br />--------.- <br />7