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<br />I <br />'I <br /> <br />~ <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />1(.. <br />I <br />I <br />I <br />I <br />I <br />, <br />, <br />I <br />I <br /> <br />IIr. luu. <br />September 12, 1994 <br />Pale 4 <br /> <br />I. Alternate Vater Supply Oo1y <br /> <br />Adv.nt.... <br /> <br />o Diverting the alternate nter lupply couleS provide for loae uptake of <br />nitrolen, phosphorul, heavy aetal., etc. <br /> <br />o Low COlt alternative. <br /> <br />Disadvantallel <br /> <br />o There is nO lill to maintain the water level in the exilting backwater <br />ares. <br /> <br />o No aeSditional acreage of backwater il created. <br /> <br />o Some of the sediment from the alternate water supply could eSepodt <br />throughout tbe exbting backvater area tbereby cauling tbe area to <br />aggrade. <br /> <br />o Diversion of tbe water without control could lead to adverse L.pactl to <br />the existing river revetaent. <br /> <br />, . .0 Action <br /> <br />Advant..e. <br /> <br />o Ilaintain tbe site in its existing condition, thereby pre..rving the <br />approximately 305 acrel of vegetated wetlands and tbe approxiaately 35 <br />acres of backwater area. <br /> <br />o No construction costs required. <br /> <br />Disadvantslles <br /> <br />o No ability to diversify tbe exilting functionl of the lite. <br /> <br />o Doel not meet any goall of tbe project. <br /> <br />Based On our analysis to date, Alternative C, 'Backwater/Vetland Co.plex Only', <br />appearl to be tbe .Olt appropriate for increaling backwater area for waterfowl, <br />maintaining exilting water levell, and .iniaizing iapactl to vegetated vetlandl. <br /> <br />Tbe additional alternative proposed by Ilr. Weiner, while it hat DOt been analyzeeS, <br />appean as if it would create the s..e acreage of open ..ater as Alternative C <br />wbile ainiaizing the potential problea of sediaent deposition. <br />