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COLORADO LEGACY LAND <br /> SCHWARTZWALDER MINE <br /> TABLE L-1.REVISED SCHWARTZWALDER MINE RECLAMATION COSTS <br /> Item Unit Cost Quantity Unit Total Cost Notes/Basis of Estimate <br /> Labor $ 12.00 0 hour S Labor costs included in unit cost($/CY)for soils. <br /> Environmental Monitoring <br /> Quarterly sampling of Ralston Creek at 13 stations. Assume the creek is dry or <br /> Surface Water inaccessible 50%of the time. <br /> Monitoring $ 722.40 182 sample $ 131,476.80 <br /> Initial bond utilized a 10-year time period and began in 2018.CLL is currently 3 years <br /> into this 10-year bonding period. <br /> Groundwater monitoring network includes 13 wells and 2 spigots,however 1 well is <br /> only monitored for water levels. Assume wells are dry or inaccessible 50%of the <br /> Groundwater $ 722.40 196 sample $ 141,590.40 time. <br /> Monitoring <br /> Initial bond utilized a 10-year time period and began in 2018.CLL is currently 3 years <br /> into this 10-year bonding period. <br /> Monitoring Well $ 2,000.00 13 well $ 26,000.00 Abandon 13 wells. <br /> Abandonment <br /> Sump Removal/Abandonment $ 2,000.00 5 sump $ 10,000.00 Abandon/remove 5 sumps. <br /> Mine Opening Closure:Minnesota,Sunshine,&Steve Adits,Gate Closure <br /> Minnesota Adit $ - 1 gate S Gate duxu e already in place <br /> Sunshine Decline $ 1 gate 5 Gate closure already in place <br /> Steve Adit $ I gate $ Gate closure already in place <br /> Mine Opening Closure:Peirce Adit&CV/Charlie Adit,Backfill Closure <br /> Sufficient quantities of fill soil have been identified during the alluvial valley <br /> Fill Soil $ 8.00 60 CY S 480.00 excavation work. The haul/push distance for this material is estimated to be less <br /> than 1,000 feet. <br /> Top Soil/Plant Sufficient quantities of top soil have been identified during the alluvial valley <br /> Growth Medium $ 14.50 161 CY $ 145.00 excavation work The haul/push distance for this material is estimated to be less <br /> than 1,000 feet. <br /> Seed Mix $ 450.00 0.1 acre $ 45.00 1 Seed mix shown in Table E-1 of Application Amendment#5. <br /> JUNE 2021 47 AMENDMENT 6 <br />