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<br />en <br />~ <br />o <br />M <br />(-' <br />C <br /> <br />~;" <br />"'.) <br /> <br />. <br />::.::.J <br /> <br />"The conference bnnu"ge is intended to fix the capacity at 3,000 <br />cubic feet per second if tlliR is trIP dcqtrp illl4 qeeision of the <br />Stnta ~f Ari~pna Dnd it can be shewn that an aqueduct ef thin <br />capacity is economically justified and financially feasible." <br /> <br />Determination of Central Arizon" System Hydraulic C~aeity <br /> <br />The analysis presented in the report of the Sen"tc Interior and <br />Insular Affairs Committee on S. 1004 (Report No. 408, 90th Congress, <br />1st Session), based on information provided by the Bureau of <br />Reclamation, demonstrates the economic justification and financial <br />'feasibility of the Central Arizona Project with the Granite Reef <br />Aqueduct sized at 3,000 cubic feet per second capacity. The ratio <br />of benefits to costs derived in that analysis was 2.6 to 1.0. <br />F~cept for minor adjustments in costs and prepaid power arrangements, <br />there has been no change in the contemplated project, and the <br />analysis presented in Report No. 408 is still substantially valid. <br /> <br />Subsequent testimony presented to the Subcommittee on Irrigation and <br />Reclamation of the House Interior and Insular Affairs Commi Ltee <br />during the 2nd session of the 90th Connress and the economic analysis <br />presented in the Committee's Report No. 1312 on n.R. 3300 demonstrated <br />the economic justification and financial feasibility of the Central <br />Arizona Project with tpe Gra\1ite Reef Aqueduct sized at 2,500 c.f.s. <br />capacity. Recent incremental analyses indicate a favorable benefit- <br />cost ratio of 2.3 to LO for the 500 c.E.s. increment to be added to <br />increase the aqueduct capacity from 2,500 c.f.s. to 3,000 c.f.s. <br /> <br />On the basis of the above and in viel' of the desires of the State of <br />Arizona as evidenced by the letter of September 2, 1969, from the <br />Executive Director of the Arizona Interstate Stream Commission to <br />the Secretary of the Interior, a copy of which is enclosed, a <br />hydraulic capacity of 3,000 c.f.s. for the Granite Reef Aqueduct <br />waS adopted for determination of what the electric power capacity <br />requirements will be for the Central Arizona Project. <br /> <br />Power Demand <br /> <br />Taking into account manufacturers' warranties, motor efficiencies, <br />power transformer, station auxiliary losses and transmission losses, <br />it was concluded that the electric capacity required at the power- <br />plant to serve the Central Arizona Project operating at full <br />hydraulic capacity of 3,000 c.f.s. would be 561,000 kilowatts. <br /> <br />2 <br />