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<br />c',) <br />N <br />C':l <br />~ <br />N <br /> <br />an investigation which will result in a Feasibility Report and <br /> <br />Environmental Impact Statement in'1981. <br /> <br />PROJECT ~ <br /> <br />The plan is to expand the present power plant by utilizing <br /> <br />the four pipes located on the river I s south side immediately below <br /> <br />the darn and now serving as the outlet works. These ol,tlet works <br /> <br />were installed to allow for controlled releases from the reservoir. <br /> <br />Generators could be retrofitted to the outlet pipes to produce <br /> <br />additional power, At this time it appears most feasible to add <br /> <br />about 250.000 kW of electrical capacity; the existing power plant <br /> <br />has a capac:f.ty of ahout 1,000,000 kW. The 250,000 kli expansion is <br /> <br />the absolute maximum and may have to he reduced if furthel' informa- <br /> <br />don :l.ndicates 2$0,000 kW is too large due to economic or environ~ <br /> <br />mental constra:l.nts. <br /> <br />Along with the increase in peaking power will be an increase <br /> <br />:l.n the flow of the Colorado River below the darn. As alluded to in <br /> <br />our illustrat:l.ons of river cross~sections. this incremental rise <br /> <br />will be from the present maximum level of 33.000 cfs to an estimated <br /> <br />40.000 cfs or by 18.5%. <br /> <br />POTENTIAL IMPACTS <br /> <br />At the present time the Bureau of Reclamation is unable to <br /> <br />quantify the potential impacts of the power plant expansion. Data <br /> <br />will be collected and evaluated during the next 12 to 18 months so <br /> <br />that impacts can be specifically addressed in the Environmental Impact <br /> <br />Statement. It is important that all of the potential impacts are <br /> <br />. <br /> <br />, <br /> <br />,.' 1~" <br /> <br />