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<br />its assimilative capacity vhen it is impounded because the total distance <br />for the stream to reaerate vill have been shortened. It should also be <br />noted, however, that even though the atmospheric reaeration rate in <br />impoUDiments is low the amount of oxygen transferred through impoundments <br />m~ be substantial beca.use of the large surface area. This could result in <br />a greater assimilative capacity. <br /> <br />CODment: If vater quality problems occur because of the <br />impoundment of the stream, can the Corps of Engineers undertake remedial <br />measures such as upgrading of sevage treatment systems to a higher degree <br />of treatment to assure that vater quality vill be suitable for intended <br />purposes? <br /> <br />Response: The Corps has no jurisdiction over activity <br />outside project boundary and as such vould have no control over vater <br />quality problems generated outside the project area. <br /> <br />Comment: Will a seasonal pool be provided? <br /> <br />Response: A multiple-purpose pool vill be <br />maintained at constant elevation with no plans for providing s seasonal <br />drawdown. Any seasonal fluctuations will be due to precipitation runoff <br />and these vill be rapidly drawn down through discharge from the <br />outlet vorks. <br /> <br />Comment: Will there be a minimum release and, if so, how <br />vill this release be accomplished? <br /> <br />Response: The reservoir operation plan calls for releasing <br />inflow up to a selected discharge magnitude predicated on the pool level <br />in the reservoir. The minimum release from the reservoir will, therefore, <br />be the same as the minimum inflow into the reservoir, minus evaporation. <br />Data indicates thst there should be no problem in maintaining a minimum <br />flow since low inflows are significantly greater than maximum evaporation <br />losses, The outlet structure vill be capable of meeting the following <br />opera.ting criteria: <br /> <br />Release Rate (c.f.s.) <br /> <br />Pool Conditions <br /> <br />From top of conservation pool <br />to half-full flood control pool <br /> <br />Inflow to maximum rate <br />of 500 c.r.s. <br /> <br />From ha1f~full flood control pool to <br />75 percent full flood control pool <br /> <br />1,000 <br /> <br />From 75 percent full flve' '~ntrol <br />pool to full flood control pv~ <br /> <br />1,500 <br /> <br />From full flood co'.. ',h _ ~ol <br />to emergency ep',,_lVSlf crest <br /> <br />2,000 <br /> <br />24 <br />