Laserfiche WebLink
, Hennepin Parks <br /> Project BABX-91-589 <br /> December 19, 1991 <br /> ' Page 3 <br /> , <br /> , <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 After the auger had been withdrawn from Ehe bore holes, groundwater was not observed to <br /> cave-in depths ranging from 3 1/2 to 7 1/2 feet. <br /> i _ _, <br /> In bormgs ST 5 through ST , groundwater was not encountered m any of the borings durmg <br /> ' the drilling operation or after the hollow-stem auger had reached the termination depth of the <br /> borings. After the auger had been withdrawn from each of the bore holes, groundwater was 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 /> ' <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 ;roundwater levels. In borings ST-5 through ST-7, <br /> groundwater levels were then measured at depths ranging from 7 to 10 feet below the surface. <br /> In borings B-1 through B-4, groundwater levels were measured at depths ranging from 2 ll2 <br /> ' to 4 feet. It is our opinion the water levels measured in borings B-1 through B-4 are perched <br /> and do not represent groundwater. <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 /> ' . <br /> B.4 Laboratory Tests <br /> ' Five classification tests were performed 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 right-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 Materials <br /> and Testing (ASTM) procedures. <br /> ' <br /> ' <br /> ' <br /> ' <br /> � <br />