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<br /> <br />SUl3STANTIATING MATE.RI.ALS <br /> <br />tile settlement opportunities provided by the extension development. <br />Annual irrigation benefits from the extension area are summarized in <br />the fo11ow1ng tabulation; <br /> <br />Annual <br />irrigation <br />benefits ' <br />Direct <br />Indirect <br />Public <br />Total <br /> <br />Atter <br />development <br />..,eriod <br />31,,516 <br />39,862 <br />11,250 <br />82,630 <br /> <br />lOO-year average <br />including lO-year <br />development period <br />$27,900 <br />35,300 <br />9,900 <br />73,100 <br /> <br />Annual e~ivaJ.ent costs.--Average annual equivalent costs include <br />the net capital investment amortized over a loo-year period a.t 2.5 <br />percent; annual operation, maintenance, and replacement costs; and <br />assigned costs of the regulatory features of the Colorado .River Stor- <br />age project. The cost of investigations prior to project authorization <br />was excluded. Average annual equivalent costs are sUlllmarized in -the, <br />fOllowil:lg tabulation. <br /> <br />Cost ,1.t~ <br />Construction cos~ <br />Interest durinG 3-year <br />construction period <br />Total <br />Annual operation, mainte- <br />nance, and replacement <br />costs <br />Pro rata share of costs <br />ot: regulatory features <br />ot: Colorado :River Stor- <br />age proJectg,! 10,000 <br />~tal 8~3oo <br />Y Excludes about $79,000 of investigation costs incurred <br />prior to proJec-t authorization. <br />Y Based on $2 per acre-foot for 5,000 acre-feet of stream <br />depletion. <br /> <br />Benefit-cost cOlllParison.--Average annual benefits from the project <br />($73,IOO') com,pa.re With annual equivalent COl3ts ($82,300) in a ratio of ' <br />about 0.9 to 1.0. <br /> <br />Total value <br />$2,201,000 <br /> <br />84,000 <br />2,285,000 <br /> <br />Annual value" <br /> <br />$62,400 <br /> <br />9,900 <br /> <br />Cost Allocation and Rep~ent <br /> <br />Since the Pine Biver project extension would be essentially a <br />single-purpose irrigation development, all costs, exclusive of expendi- <br />tures from the Colorado River Development P\lnd, would be reimbursable <br /> <br />18 <br />