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<br />I <br /> <br />I <br />.1 <br />I <br /> <br />I <br />I <br />I <br /> <br />surface glacial deposits. The prairie du Chien- <br />Jordan is the major aquifer in the Twin Cities <br />Metropolitan area and produces large amounts of <br />water from municipal and industrial uses. The <br />water is generally good quality and is available <br />in sufficient amounts to provide an abundant source <br />of potable water. The construction of this project <br />will have no effect upon the quality or quantity <br />of water contained in the Prairie du Chien-Jordan <br />aquifer. <br /> <br />I <br /> <br />D. BIOLOGICAL The site supports both an abundance and a variety <br />COMMUNITIES .. <br />of plant and anlmal specles. No endangered plants <br /> <br />or animals are known to inhabit the area. <br /> <br />,I <br />I <br /> <br />I <br /> <br />Vegetation - The proposed site has been utilized <br />as a spoil dump in the past 10 years. The low <br />lying marshes are relatively intact in terms of <br />vegetation, while the uplands are highly disturb- <br />ed. Underlying the sands and organic matter are <br />clay soils, which act to trap water in the marshes, <br />although there may be sand bearing lenses which <br />allow the lateral flow of ground water into and <br />out of the marshes. However, presently, most <br />opinions suggest that, although the water levels <br />in the marshes are approximately equal to those in <br />the surrounding ground, the two are not connected. <br />, . The marshes appear to be mainly a function of sur- <br />face runoff. <br /> <br />,I <br /> <br />I <br />I <br />I <br /> <br />II <br /> <br />1847 General Land Office Records suggest the area <br />was recently marshy mixed with oak vegetation - <br />burr, black and Jack oak. <br /> <br />I <br /> <br />I <br />I <br /> <br />111-13 <br />