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<br /> <br />P.rtificial structure controls will. not be utilized in the <br />construction of the new stream channel. However, in order to <br />ensure continued flood irrigation of the surrounding area, a <br />head gate and associated irrigation ditch must be installed. <br />Specific plans regarding these structures have not been <br />formulated at this writing. If necessary, such plans will be <br />provided upon their completion. <br />tSitigation of Impacts <br />As discussed earlier, stream channel diversion activities <br />will take place during periods of low stream flow. This will <br />prevent an increase in sediment .load and the contribution of <br />suspender] solids downstream. <br />Rip rap will be utilized to prevent bank erosion and further <br />sediment yield. Tonicity problems with respect to the <br />sandstone to Le utilized will not exist. This is evidenced <br />by the results of overburden and interhurden sampling <br />presented i.n 2.04.6 Geology Description. <br />Impacts on aquatic biota will be minimal. Stollsteimer Creek <br />is not identified as a natural fisheries. Flows sufficient <br />to support aquatic biota exist only during periods of <br />significant r.unof.f (spring and early summer), construction <br />activities are to be conducted during periods of low flow for <br />7 <br />