2011-03-01_REVISION - M1977493 (6)

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Permit Amendment (AM-06) - Climax Mme CLIMAX MINE RECLAMATION COST ESTIMATE Financial Reporting Unit Rates East Side Channel Construction Across Tenmile and Mayflower TSFs Assumptions: (1) Construction of the East Side Channel will be done in a manner similar to the completed portions that were done on Robinson TSF in 2005. (2) Knowing the costs for Robinson's East Side Channel, it can be assumed these numbers are applicable to Tenmile and Mayflower. (3) Preliminary sizing provided by Wheeler Feb-2010; spillways for Tenmile and Mayflower will be equivalent to Robinson's 2005 ESC. Tasks: (1) Construct Channel Extensions through Camp, Robinson, Tenmile, and Mayflower. (2) Construct Pipeline Extensions through Camp, Robinson, Tenmile, and Mayflower. Timing End of Mine Life Total Cost $11,967,396 Calculations Task/Area Qty Units t:; Unit cost/unit Total Equip Cost Total Labor Cost Gost/Unit Total Material Cost Total Cost Equip Labor Materials East Side Channel Construct Channel Extensions 29,300 ft $63.45 $1,394,218 $464,739 $1,858,958 Geotextiles (furnish & install) 153,889 sq yd $2.08 $159,989 $159,989 $319,979 Rip Rap Armoring along Channel Route 82,737 cy $30.75 $2,544,082 $2,544,082 East Side Pipeline HDPE 42-48" pipe and bedding (furnish & install) 40,900 ft $177.12 $1,811,094 $1,811,094 $3,622,189 $7,244,378 - Total Equip Cost Total Labor Cost Total Material Cost Total Cost TOTAL COSTS $3,205,313 $2,435,823 $6,326,261 $11,967,396 Climax Mine Permit Amendment AM-06 By Wheeler. 2/24/10 Reclamation Construction Quantities East Side Channel Camp t i E Robinson E t i Tenmile Extension Mayflower EMension Total Units x ens on x ens on Channel Length: 4,500 5,200 11,000 8,600 29,300 ft Bottom Width: 6.0 6.0 10.0 16.0 ft Channel Depth: 6.0 6.0 6.0 6.0 it Side Slope: 2.0 2.0 2.0 2.0 (H):I(V) Cross-Section Area: 108.00 108.00 132.00 168.00 sq It Wetted Perimeter: 32.83 32.83 36.83 42.83 ft Top Width: 30.00 30.00 34.00 40.00 ft Channel Volume: 18,000 20,800 53,778 53,511 146,089 cu yds Channel Excavation: Riprap Si- 18,000 20.800 6.0 6.0 53,778 12.0 53,511 18.0 146,089 cu yds in Riprap Thickness: 1.00 1.00 2.00 3.00 ft Riprap Volume: 5,472 6,323 30,012 40,929 82,737 cu yds Geotextile Length: 42.83 42.83 46.83 52.83 ft Geotextile Area: 21,416 24,748 57,240 50,485 153,889 sq yds Road Width: 20.0 20.0 20.0 20.0 ft Road Surface Area: 90,000 104,000 220,000 172,000 586,000 sq ft Surfacing Depth: 9.0 9.0 9.0 9.0 in Surfacing Volume: 2,500 2,889 6,111 4,778 16,278 cu yds Camp Extenstion = Camp (near TDH) to Hwy 91 crossing Robinson Extension = Hwy 91 crossing to Robins on spillway structure Tenmile Extensi on = outall 63" HDPE at 2 Dam to Clinton Gulch Mayflower Extention = Clinton Gulch to Mayflower Creek East Side Pipeline Pipe Length: 4,900 8,100 7,900 20,000 40,900 It Pipe Size: 42 42 42 48 in Material: ID PE SDR 1HOPE SDR 17 HDPE SDR 17 HD PE SDR 17 PE4710 Pipe W6ght: 135.372 135.372 135.372 176.812 Ibs/ft Pipe Weight: 663,323 1,096,513 1,069,439 3,536,210 6,365,515 lbs Pipe OD Arcs: 9.62 9.62 9.62 12.57 sq ft Trench Side Space: 1.50 1.50 1.50 1.50 ft Bedding Base: 0.50 0.50 0.50 0.50 ft Bedding Cover: 0.50 0.50 0.50 0.50 ft Soil Cover: 2.00 2.00 2.00 2.00 ft Trench Width: 6.50 6.50 6.50 7.00 ft Trench Depth: 6.50 6.50 6.50 7.00 ft Trench Area: 42.25 42.25 42.25 49.00 sq ft Trench Volume: 7,668 12,675 12,362 36,296 69,001 cu yds Bedding Area: 19.63 19.63 19.63 22.43 sq ft Bedding Volume: 3,562 5,889 5,743 16,618 31,812 cu yds [5nibil L Feb 2011