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COLORADO LEGACY LAND <br /> SCHWARTZWALDER MINE <br /> TABLE L-1.REVISED SCHWARTZWALDER MINE RECLAMATION COSTS <br /> ]tern Unit Cost Quantity I Unit Total Cost Notes/Basis of Estimate <br /> Water Treatment Plant Operations <br /> RO System $ 139,363.00 17 year $ 2,369,171.00 Initial Operation,6 months bond utilized a 20-year time period and began in 2018.CLL is currently 3 <br /> RO System Stand-by, years into this 20-year bonding period.Unit cost includes remote-monitoring costs <br /> 6 months $ 15,000.00 17 year $ 255,000.00 for webmaster system and onsite operator. <br /> Initial bond utilized a 20-year time period and began in 2018.CLL is currently 3 years <br /> Discharge permit $ 1,988.20 102 month $ 202,796.40 into this 20-year bonding period.Discharge sampling only occurs for 6 months of the <br /> sampling year when the plant is operating(6 months*17 years=102 months). Unit costs for <br /> samples are provided by contract laboratories SeaCrest and ACZ. <br /> Demolish water $ 3Q000.00 1 year $ 3Q000.00 <br /> treatment plant <br /> InSitu Treatment <br /> Insitu injection- $ 8,760.00 4 injection $ 35,040.00 Initial bond utilized a 10-year time period and began in 2018. CLL anticipates 4 <br /> molasses <br /> additional injections before 2028.Bulk chemical costs are provided by Interstate <br /> Insitu injection- $ 26,180.00 4 injection $ 104,720.00 Chemical Company. <br /> ethanol <br /> Six months of mine pool sampling following an injection. Initial bond utilized a 10- <br /> Mine pool sampling $ 950.00 30 monthly $ 28,500.00 year time period and began in 2018. CLL anticipates 5 additional injections before <br /> 2028.Unit costs for samples are provided by contract laboratory ACZ. <br /> Alluvial Valley Excavation <br /> Mobilization $ 74,000.00 0 event $ - Heavy equipment already onsite. <br /> Demobilization $ 74,000.00 1 event $ 74,000.00 <br /> South Zone Soils(identified in TR-14 and SR-9)are estimated with the following <br /> Excavate calculation: <br /> contaminated soils $ 5.33 6,2;6 C1 $ 33,344.48 <br /> Overage Percent(15%)x Volume of Soils in South Zone(5,440 CY)=Estimated <br /> Overage Volume 6,256 CY <br /> Confirmation Maximum number of soil samples are shown,including QA/QC samples. Unit costs <br /> sampling,soil $ 158.80 265 sample $ 42,082.00 <br /> analysis for samples are provided by contract laboratory ACZ. <br /> JUNE 2021 45 AMENDMENT 6 <br />