2020-12-09_REVISION - M1977300

• Permit No: M1977300
• IBM Index Class Name: Revision
• Doc Date: 12/9/2020
• Doc Name: Request for Surety Reduction
• From: Colorado Legacy Land, LLC
• To: DRMS
• Type & Sequence: SR9
• Email Name: AME
• Email Name: MAC
• Media Type: D
• Archive: No

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