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<br /> <br />Alternatives Comparison & <br />Cost (Single Phase) <br /> <br /> <br /> North Central South <br />Storage (AF) 575,000 575,000 575,000 <br />Pipe (miles) 208 210 227 <br />Tunnels (miles) 67 57 46 <br />Pumping (hp) 294,000 297,000 299,000 <br />Hydro (MW) 115 118 117 <br />Capital Cost to N. Colorado * $3.20 Billion $3.17 Billion $3.24 Billion <br />- Unit Cost $11,000 +/- <br />Capital Cost to Denver * $3.87 Billion $3.84 Billion $3.91 Billion <br />- Unit Cost $13,000 +/- <br />Annual O&M Cost ($/AF) $1 00 - $200 / AF <br /> <br />* Planning level costs accurate to within +/- 20% I <br />