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 1
Schwartzwalder Mine,Jefferson County,CO
U dated DRMS Bond Calculation-December 2018
.11abn
$ 926,668 Additional Scope Items(Total Cost)
$ - Pre-DMO bond for site reclai mat ion
TR-12 $ 30,000 200gpmwater treatment plant Demo of new watert mat ment plant building
TR-13 $ - 50 gpm interim water treatment-Sump 1 Completed
TR-15 $ - Construction of Sump 5 Completed
TR-15 $ - Construction of5ump 9 Completed
TR-15 $ - Construction of Sump B Completed
TR-15 $ - Construction of Sump 10 Completed
TR-18 $ 134,526 Cutoff Wall and 18"Creek bypass pipe line Habitat restoration remaining
TR-19 $ - New monitorwell installation Completed
TR-19 $ - Additional monitorwell in South Water Rock Pile Completed
$ 575,000 Groundwatermonitonng $77,OOOfor 5ymm;$38,000furan additional Symn
$ 15,000 Aditclosum-Minnestota and CV/Charley/Intakes areas Two mineopenings@$7,500 each
$ 26,000 Groundwaterwell abandonment Abandon 13 monitorwells $2,000 perwell
$ 780,526 Subtotal(Direct Costs)
Additional 400e(tems(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 in RO system operation
$ 78,052.60 Profit 10%of Direct Costs
$ 102,015 Subtotal(Indirect Costs)
Additional Scope Items(Ena/Manaaement)
$ - Engineering Word&/or Contract/Bid Prep 4.25%of Direct and Indirect Costs
$ 44,127 Reclaimation management&/or Admin. 5%of Direct and Indirect Costs
$ 44,127 Subtotal(Eng/Management)
AM-04 $ 4,943,778 Mine Dewatering&InSltu Treatment(Total Cost)
Mine Dewaterina&InSitu Treatment(Direct Costs)
$ 350,000 Initial InSitu Treatment Remai ni ng treatment ifneeded
$ 515,000 Maintain InSitu Mine Pool Treatment 10yrs.quarterlytreatmentsfor maintenance.
$ 1,546,360 ROSystem Operation-yrl to 10 Yrl to S:ROsystem runs half-time(@$139,636/yr)and on
standby halftime(@$15,000/yr);see attached detail
$ 1,546,360 ROsystem Operation-yr11 to 20 Yr6to 10:Continueto run as in Yrl toy
$ - WebMaster Remote MonitoringSystem Included in costof RO systems
$ 22,200 Mine Pool Sampling Yrsl to 10
$ 22,200 Mine Pool Sampling Yrs 11 to 20
$ 4,002,120 Subtotal(Direct Costs)
Mine Dewateri na&InSitu Treatment IDRMS Indirect Costsl
$ 80,843 Liability l nsurance 2.02%of Direct Costs
$ 42,022 Performance Bond 1.05%ofDirect Costs
$ - Job superintendent Site personnel covered in ROsystem operation
$ 400,212 Profit 10%of Direct Costs
$ 523,077 Subtotal(Indirect Costs)
Mine Dewaterina&InSitu Treatment(Ene/Manaaement)
$ 192,321 Engineering Word&/or Contract/Bid Prep 4.25%of Direct and Indirect Costs
$ 226,260 Reclaimation management&/or Admin. 5%of Direct and Indirect Costs
$ 418,581 Subtotal(Eng/Management)
AM-04 $ 1,842,025 Aluvial RII(Total Cost)
Alluvial Fill(Direct Costs)
$ 74,000 Mobilization Demob-all heavyequipment already on site
$ 246,400 Demo and Debris Removal Kessler Quote per TR-23,includesold watertreatment building
and other site structures.
$ 297,325 Excavate.Haul and Place Kessler Quoteper TR-23,excavate,haul and placeon waste mck
piles,1 construction season.
$ 10,000 Lab Analysis Soils 50verification samples
$ 15,000 Lab Analysis Water 100samplmduringexcavation.
$ 48,000 Modifiy/Demosumps Pipes,pumps,electiral modifications.
$ 24,000 Mod ify monitor wet is Posible3 new/relocated mon Ito rwelIs@$8kea-includes
$ 138,600 Purchase Inert Fill Inert fill to comefrom site,no credit taken for discount
$ 214,500 Haul and Place Fill Inert fill from site-haul chargereduced to essentially zero.
$ 50,750 Purchase Top Soil Purchase 3,500 cy oftop soil
$ 112,000 Haul and Place Top Soil Haul and place3,500 cy oftop soil
$ 28,000 Revell Purchase and distribute 3.5 acres
$ 133,363 Concrete Vditch Storm Water Drain Kessler quote per TR-23,includes construction and materials
$ 88,389 Waste Rock Pile Cap Kessler quote per TR-23,includes topsoil seed and mulch
$ 1,470,327 Subtotal(Direct Costs)
Alluvial Fill(DRMS Indirect Costs)
$ 29,701 Liability Insurance 2.02%ofDirect Costs
$ 15,438 Performance Bond 1.05%ofDirect Costs
$ 23,565 Job superintendent 322.59 hrs@$65.41
$ 147,033 Profit 10%of Direct Costs
$ 215,737 Subtotal(Indirect Costs)
Alluvial Fill(Ena/Manaaementl
$ 71,658 Engineering Word&/or Contract/Bid Prep 4.25%of Directand Indirect Costs
$ 84,303 Reclaimation management&/orAdmin. 5%of Direct and Indirect Costs
$ 155,961 Subtotal(Eng/Management)
Other $ 1,187,529 Denver Water-Water Treatm ent(Contingent cost)
Total Bond 8,900,000
12/7/l8