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Rifle Gravel Pit#1 July 2023
<br /> Table 7. Reclamation Costs
<br /> Activity Description ��„�„a �� Time Months cost $
<br /> „" ..
<br /> Phase 1-Site Development 8,Gram 3'11,4 N � ) ,
<br /> Total Area 11.18 acres ��; �. `.':� ,� a
<br /> Remove 54,111 CY of overburden
<br /> -42,267 CY 30"cut
<br /> -11,844 CY of 6"cut topsoil
<br /> • Construct perimeter berms(2.87 acres, 11,528 CY);includes decompaction,topsoiling(2,305 CY)and seeding(assumed$45/hour,3 staff, 12 days, 10 hours/day) Berm construction labor=$16,200
<br /> • Perimeter Area outside berm(3.54 acres)not expected to require active reclamation due to lack of surface disturbance. Incidental seeding and/or weed treatment only,no measurable acreage or Equipment=$32,400
<br /> treatment cost when combined with contemporaneous berm reclamation. 1-2 months(August-September 2023) $1,000/acre(seeding,subcontracted labor)_
<br /> • Scott anticipates using 2 pieces of equipment for this work,in addition to a tractor and disc for decompaction(average equipment charge$90/hour) $2,870
<br /> • Assumed a push and haul distance of 200-250 feet for removal of the overburden and construction of the berm.
<br /> • Stockpile 30,423 CY of overburden for use in backfillin the pond,if needed.For sale after 60%mining phase to make room for mining in the stockpile area
<br /> P� ( 9 P 9 P 9 P� )
<br /> • Stockpile 9,539 CY of topsoil(est.2.5 acres)and stabilize with upland mix for reclamation needs during Phase 3 and Phase 4(533 CY that will be placed on Operations Pad during Phase 2 for Stockpiling labor=$10,800
<br /> use during Phase 3) Equipment=$21,600
<br /> • Assumed$45/hour,2 staff, 12 days, 10 hours/day $1,000/acre(seeding,subcontracted labor)_
<br /> • Scott anticipates using 2 pieces of equipment for this work(average equipment charge$90/hour) $2,500
<br /> • Assumed a haul distance of 800-1,500 feet to the stockpiles
<br /> Estimated Phase 1 Reclamation Costs=$86 370
<br /> Phase 2-Mining Preparation
<br /> Total Area 1.86 acres
<br /> Construct and grade the Operations Pad(1.86 acres)(assumed$45/hour,2 days,2 staff, 10 hours/day) Labor=$1,800
<br /> • Scott anticipates using 2 pieces of equipment for this work(average equipment charge$90/hour) ,, Equipment-$3,600
<br /> • Import 2,999 CY Class 6 material $10/ton delivered 1-2 months ' Class 6=$41,986
<br /> • Mobilize and lace scale,scale house,equipment,pipes,fuel,loadingchute,processor,restroom trailer and construction materials no foundations,all mobile September-October 20 $35,000
<br /> "" Labor=$360
<br /> • Stockpile and seed(upland seed mix)533 CY of topsoil(0.12 acre),assume a haul distance of 200 feet from stockpile location determined in Phase 1 (assumed$45/hour,0.5 day,2 staff) Equipment=$720
<br /> • Scott anticipates using 2 pieces of equipment for this work(average equipment charge$90/hour) �` $1,000/acre(seeding,subcontracted labor)_
<br /> ,, $120
<br /> Estimated Phase 2 Reclamation Costs=$83,586
<br /> Phase 3-Mining Extraction and Greenbelt Reclamation 3-5 years i`'A„� ,
<br /> Total Area 10.03 acres Nov.2023-Dec.2026 to Diic.2028
<br /> 30%
<br /> 3.67 acres of mining,stockpiling,and processing(-70,000 CY
<br /> • Verify the mining slopes and greenbelt area slopes using GPS GPS=$2,500(one-time setup)
<br /> • Reclaim approximately 0.30 acres of greenbelt area with--275 CY of topsoil(including decompaction) GPS labor=$3,750
<br /> Revegetate with Wetland Seeding and Planting Mix identified in Figure 14 November 2023-November 2024 to May $10/CY(decompaction and topsoil application,
<br /> • Scott anticipates using 3 pieces of equipment for this work,in addition to a tractor and disc for decompaction(average equipment char a$90/hour 1.5 y incl.labor)_$2,750
<br /> • p g pp ( gg ) 1 -1.5 years $10,000/ac(subcontracted,seeding and
<br /> • Assumed haul distance of 800-1,500 feet from Operations Pad topsoil stockpile. planting,incl.labor)_
<br /> • Note any extracted,non-sold material(variable),plus available overburden(-30,423 CY stockpiled during Phase 1 could be used to backfill the pond if mining ceases).Not anticipated but for $3,500
<br /> reclamation costing purposes estimating 35,000 CY would need to be backfilled.(assumed$45/hour,3 staff, 12 days, 10 hours/day). Backfill labor=$16 200
<br /> Estimated Phase 3 30%Reclamation Costs=$28 700
<br /> 60%
<br /> 1.91 acres of mining,stockpiling,and processing(-70,000 CY
<br /> • Verify the mining slopes and greenbelt area slopes using GPS GPS labor=$3,750
<br /> • Reclaim approximately 0.18 acres of the greenbelt area with approx. 129 CY of topsoil(including decompaction) $10/CY(decompaction and topsoil application)
<br /> • Revegetate with Wetland Seeding and Planting Mix identified in Figure 14 May 2025-May 2026 to November 2026 =$1,290
<br /> • Scott anticipates using 3 pieces of equipment for this work,in addition to a tractor and disc for decompaction(average equipment charge$90/hour) 1 -1.5 years $10,000/ac(subcontracted,seeding and
<br /> • Assumed haul distance of 800-1,500 feet from Operations Pad topsoil stockpile. planting,incl.labor)_
<br /> • Note any extracted, non-sold material(variable),plus available overburden(-30,423 CY stockpiled during Phase 1 could be used to backfill the pond if mining ceases).Not anticipated but for $1,800
<br /> reclamation costing purposes estimating 70,000 CY would need to be backfilled. assumed$45/hour,3 staff,24 days, 10 hours/day). Backfill labor=$32,400
<br /> Estimated Phase 3 60%Reclamation Costs=$39,240
<br /> 100%
<br /> 4.45 acres of mining,stockpiling,and processing(-86,325 CY
<br /> • Verify the mining slopes and greenbelt area slopes using GPS(assumed$30/hour, 1 day) GPS labor=$3,750
<br /> • Reclaim approximately 0.18 acres of the greenbelt area with approx. 129 CY of topsoil(including decompaction) $10/CY(decompaction and topsoil application)
<br /> • Revegetate with Wetland Seeding and Planting Mix identified in Figure 14 November 2026-May 2027 to May 2028 =$1,290
<br /> • Scott anticipates using 3 pieces of equipment for this work,in addition to a tractor and disc for decompaction(average equipment charge$90/hour) 1-1.5 years $10,000/ac(subcontracted,seeding and
<br /> • Assumed a haul distance of 800-1,500 feet from Operations Pad topsoil stockpile. planting,incl.labor)_
<br /> • Note any extracted,non-sold material(variable),plus available overburden(-30,423 CY stockpiled during Phase 1 could be used to backfill the pond if mining ceases). Not anticipated but for $1,700
<br /> reclamation costing purposes estimating 70,000 CY would need to be backfilled. assumed$45/hour,3 staff,24 days, 10 hours/day). Backfill labor=$32,400
<br /> Estimated Phase 3 100%Reclamation Costs=$38,820
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