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Closure Cost Estimate <br />Underground Openings <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 />Underground Openings Cost Summary <br />Labor Equipment Materials Totals <br />Adits, Portals & Declines Plugging $4,438 $342 $12,711 $17,491 <br />Shaft Backfill/Cover $1,554 $3,298 N/A $4,852 <br />Shaft Capping $1,072 $82 $556 $1,710 <br />TOTALS $7,064 $3,722 $13,267 $24,053 <br />Adits, Portals & Declines - User Input <br />Facility Description Physical Characteristics Backfill Material <br />Description <br />(required)ID Code Height Width <br />Backfill/ <br />Plug Type <br />Distance to <br />Bulkhead <br />Backfill <br />Material <br />Condition <br />Backfill <br />Material <br />Type <br />Distance <br />to Backfill <br />Borrow <br />Slope from <br />Adit to <br />Borrow Area <br />-1 ft ft ft (select)(select)ft % grade <br />1 Idaho Tunnel Portal 12.0 12.0 Concrete Bulkhead 40 1 Gravel 484 -1.0 <br />2 Caribou 300 Level Portal 8.0 8.0 Concrete Bulkhead 40 1 Gravel 3,690 -5.0 <br />3 Idaho Tunnel - Access Gate 12.0 12.0 Bat Gate <br />4 Cross Mine Adit 8.0 8.0 Concrete Bulkhead 40 1 Gravel 402 4.0 <br />5 Caribou 300 - Access Gate 8.0 8.0 Bat Gate <br />6 Cross Adit - Access Gate 8.0 8.0 Bat Gate <br />Notes: 1) Foam (adit) option is for smaller openings that can be plugged with simple forms and a 5 ft thick plug. <br /> 2) Foam (production) option is for larger production openings (declines, etc.) and requires larger form construction and minimum 10 ft thick plug. <br /> 3) All foam plugs include minimum 15ft of backfill from opening to plug. <br /> 4) Bat gate option is for small openings and the material cost is the same for any size opening. <br /> 5) Backfilling assumes that small dozer will push material from nearby stockpile or dump <br /> 6) Material Types are used for density correction based on material densities in Caterpillar Performance Handbook material density table <br />11/21/2021 <br />Copyright © 2004 - 2009 <br />SRCE Software. All Rights Reserved. Page 1 of 5 Underground Openings