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' Hennepin Parks <br /> Pro�ect BABX-91-589 <br /> , December 19, 1991 <br /> ' Page 3 <br /> 1 <br /> ' B.3 Groundwater <br /> In borings B-1 through B-4, groundwater was not encountered during the drilling operation. <br /> � After the auger had been withdrawn from the bore holes, groundwater was not observed to <br /> cave-in depths ranging from 3 1/2 to 7 1/2 feet. <br /> ' In borin s ST-5 throu h ST-7 roundwater was not encountered in an of the borin s durin <br /> g g , g Y g g <br /> the drilling operation or after the hollow-stem auger had reached the termination depth of the <br /> � borin;s. After the auger had been withdrawn from each of the bore holes, groundwater was <br /> observed at depths ranging from 8 1/2 to 10 feet. <br /> , The bore holes were left open for a short period of time, ranging from 30 minutes to <br /> ' 3 1/2 hours, before rechecking groundwater levels. In borings ST-5 through ST-7, � <br /> groundwater levels were then measured at depths ranging from 7 to 10 feeC below the surface. <br /> In borings B-1 through B-4, groundwater levels were measured at depths ranging from 2 1/2 <br /> ' to 4 feet. It is our opinion the water levels measured in borings B-1 through B-4 aze perched <br /> . and do not represent ;roundwater. <br /> ' Seasonal and annual fluctuations of the groundwater level should be anticipated. At this site, <br /> we anticipate fluctuations to coincide with the levels of Lake Minnetonka. <br /> ' B.4 Laborato Tests <br /> rY <br /> Five classification tests were perfurmed to assist in the identification of the soils. These tests <br /> ' consisted of determining the percent material passing the number 200 sieve. The results of <br /> these tests can be found in the ri;ht-hand margin of the Log of Boring sheets at the elevations <br /> ' the tests were taken. The tests were conducted according to American Society for :�Iaterials <br /> and Testing (AST1�I) procedures. <br /> 1 <br /> ' <br /> ' <br /> ' <br /> ' <br />