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<br /> EXHIBIT 6-1 OPINION OF PROBABLE COST
<br />PROJECT: I Long Hollow Dam and Reservoir I DESIGN LEVEL: I PROJECT NO;
<br /> 1100 high dam, 5400 acre~foot storage reservoir r Feasibility 991-077.120
<br /> DESCR/PTION QUANTITY UNIT UNIT PRICE AMOUNT
<br />Preoaratfon for Construction
<br />Mobilization I Demobilization 1 LS $300,000 $300,000
<br />Sediment & Erosion Control. during construdion 1 LS $50,000 $50,000
<br />Water Control and Dewatering 1 LS $50,000 $50,000
<br />Site Work
<br />Clear & Grub Surface - from Borrow Sources included in Earthwork prices
<br />Strip and Stockpile Topsoil from Borrow Sources included in Earthwork prices
<br />Haul Topsoil to Dam, place 6 inch thick- no compaction specification 40,000 CY $4 $160,000
<br />Revegetate -embankment, all construction disturbance downstream of dam
<br /> and above max. reservoir elevation 60 A"e $1,500 $90,000
<br />Instrumentation 1 LS $100,000 $100,000
<br />Access Road along crest (furnish & place compacted Class 7 base course) 2S0 CY $30 $7,500
<br />Curtain Wall Grouting 1 LS $630,000 $630,000
<br />Earthwork
<br />Embankment Foundation Fill (Lewis Shale....otace and comoact
<br />RiD dearade moisture condition and haul. from Area 1 138,000 CY $9 $1,242,000
<br />Embankment Fill (Lewis Shalel-oJace and comnact from the BOlTDw Sources:
<br />Rio dearade mOisture condition and haul-from Dam Foundation 138,000 CY $7 $966,000
<br />Rio dearade moisture condition and haul-from SeeDaae Blanket 52,000 CY $7 $364,000
<br />Rio deorade moisture condition and haul.from SDillwav 265,000 CY $5 $1,325,000
<br />Rio dearade moisture condition and haul-from Area 1 178,000 CY $9 $1,6Q2,000
<br />Seeoaae Blankets FDJ {Lewis Shale)-olace and comoact
<br />Rio dearade moisture condition and haul- from Area 1 52,000 CY $9 $468,000
<br />Chlmnev Drain (furnish from offsite and olace a 3 foot laver\ 15,000 CY $40 $600,000
<br />Riorap- Cliffhouse Sandstone (drill, blast, load haul, place) 50% borrow yield 21,000 CY $35 $735,000
<br />Outlet Conduit
<br />Concrete, reinforced in Outlet Conduit (furnish and place) 1,800 CY $325 $585,000
<br />Outlet Pipe 3f8 inch welded steel pipe 900 LF $550 $495,000
<br />Howell Bunger valve- 24 inch 1 EA $87,000 $87,000
<br />Jet Valve for bypass-12 inch 1 EA $52,000 $5.2,000
<br />Outlet operating Building 1 EA $25,000 $25,000
<br />Concrete, reinforced. Baffled Outlet (furnish and place) 60 CY $550 $33,000
<br />Flow Meter - 12 Mag-Meter 1 EA $11,000 $11,000
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<br />Wrighl Waler Engineers, Inc.
<br />10:16AM 3/2112005
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<br />Wastem La Plata
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