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Attachment 2 <br /> Schwartzwalder Mine,Jefferson County, CO <br /> Updated DRMS Bond Calculation-December 2020 <br /> Sawa Arcot Not" <br /> $ 926,668 Additional scope items(Total Cost) <br /> TR-12 $ 30,000 200 gpm water treatment plant Demo ofnew watertreatment plant building <br /> TR-18 $ 134,526 Cutoff Wall and18"Creek bypass pipeline Habitat restoration remaining <br /> $ 575,000 Groundwater monitoring $77,000 for 5 years;$38,000 for an additional 5years <br /> $ 15,000 Aditclosure-MinnestotaandCV/Charley/Intakes areas Two mine openings @$7,500 each <br /> $ 26,000 Groundwater well abandonment Abandon 13 monitor wells @$2,000 perwell <br /> $ 780,526 Subtotal(Direct Costs) <br /> Additional Scope Items(DRMS Indirect Costs) <br /> $ 15,767 Liability insurance 2.02%of Direct Costs <br /> $ 8,196 Performance Bond 1.05%of Direct Costs <br /> $ - Job superintendent Site personnel covered inRO system operation <br /> $ 78,052.60 Profit 10%of Direct Costs <br /> $ 102,015 Subtotal(Indirect Costs) <br /> Additional Scope Items(Ene/Manaeementl <br /> $ - Engineering Word&/or Contract/Bid Prep 4.25%ofDirect and Indirect Costs <br /> $ 44,127 Reclaimation management&/orAdmin. 5%ofDirectand Indirect Costs <br /> $ 44,127 Subtotal(Eng/Management) <br /> AM-04 $ 4,511,426 Mine Dewatering&InSitu Treatment(Total Cost) <br /> Mine Dewaterine&InSitu Treatment(Direct Costs) <br /> $ 515,000 Maintain InSitu MinePoolTreatment 10yrs.quarterly treatments for maintenance. <br /> 5 1,546,360 RO System Operation-yr 1 to 10 Yr 1 to 5:RO system runs half-time(@$139,636/yr)and on <br /> standby half-time(@$15,000/yr);seeattached detail <br /> $ 1,546,360 ROsystem Operation-yr 11 to 20 Yr 6 to 10:Continueto fun asin Yr1 to <br /> $ - WebMaster Remote Monitoring System Included incostofROsystems <br /> $ 22,200 Mine Pool Sampling Yrs 1 to 10 <br /> $ 22,200 Mine Pool Sampling Yrs11to20 <br /> $ 3,652,120 Subtotal(Direct Costs) <br /> Mine Dewater(ne&InSitu Treatment(DRMS Indirect Costs) <br /> $ 73,773 Liability Insurance 2.02%of Direct Costs <br /> $ 38,347 Performance Bond 1.05%ofDirectCosts <br /> $ - lob superintendent Site personnel covered in RO system operation <br /> $ 365,212 Profit 10%of Direct Costs <br /> $ 477,332 Subtotal(Indirect Costs) <br /> Mine Dewatering&InSitu Treatment(Ene/Manaeement) <br /> $ 175,502 Engineering Word&/orContract/BidPrep 4.25%of Direct and Indirect Costs <br /> $ 206,473 Reclaimation management&/orAdmin. 5%ofDlrect and Indirect Costs <br /> $ 381,974 Subtotal(Eng/Management) <br /> AM-04 $ 997,524 Aluvial Fill(Total Cost) <br /> Alluvial Fill(Direct Costs) <br /> $ 74,000 Mobilization Demob-all heavy equipment already on site <br /> $ 71,831 Excavate,Haul and Place Kessler Quote perTR-23,excavate,haul and placeon waste rock <br /> piles,1 construction season. <br /> $ 10,000 Lab Analysis Soils 50 verification samples <br /> $ 15,000 Lab Analysis Water 100 samples duri ng excavation. <br /> $ 48,000 Mod ifiy/Demo sumps Pipes,pumps,electircal modifications. <br /> $ 24,000 Modify monitorwells Possible 3 new/relocated monitor wells @$8k ea-includes <br /> $ 138,600 Purchase Inert Fill Inert fill tocomefrom site,no credit taken fordiscount <br /> $ 214,500 Haul and Place Fill Inert fill from site-haul charge reduced to essentially zero. <br /> $ 50,750 Purchase Top Soil Purchase3,500 cyoftop soil <br /> $ 112,000 Haul and Place Top Soil Haul and place 3,500 cy oftop soil <br /> $ 28,000 Revegetate Purchaseand distribute3.5 acres <br /> $ 786,681 Subtotal(Direct Costs) <br /> Alluvial Fill(DRMS Indirect Costs) <br /> $ 15,891 Liability Insurance 2.02%of Direct Costs <br /> $ 8,260 Performance Bond 1.05%of Direct Costs <br /> $ 23,565 Job superintendent 322.59 hrs @$65.41 <br /> $ 78,668 Profit 10%of Direct Costs <br /> $ 126,384 Subtotal(IndirectCosts) <br /> Alluvial Fill(Eng/ManmemenO <br /> $ 38,805 Engineering Word&/or Contract/Bid Prep 4.25%ofDirect and lndirectCosts <br /> $ 45,653 Reclaimation management&/orAdmin. 5%ofDirectand Indirect Costs <br /> $ 84,459 Subtotal(Eng/Management) <br /> Other $ 937,529 Denver Water-Water Treatment(Contingent cost) <br /> Total Bond $ 7,373,147 <br /> 12/4/20 <br />