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SB-10 <br />886 <br />NE <br />- <br />SB-12 <br />886 <br />NE <br />- <br />1791h Lane NW from Uranium Street to about 300 feet east <br />SB-11 885 NE - <br />1771h Lane NW from Vanadium Street to end <br />SB-14 <br />8861/2 <br />NE <br />- <br />SB-15 <br />889 <br />NE <br />- <br />Waco Street from 179th Lane NW to north end of Waco Drive <br />SB-16 <br />900 <br />NE <br />- <br />SB-17 <br />909 <br />NE <br />- <br />SB-18 <br />906 <br />NE <br />- <br />Waco Drive <br />SB-19 907 NE - <br />1801h Ave NW from Barium Street to about 300 feet east <br />SB-20 901 71/2 8931/2 <br />Barium Street from 179th Lane NW to end <br />SB-21 <br />902 <br />NE <br />- <br />SB-23 <br />900 <br />NE <br />- <br />SB-24 <br />894 <br />NE <br />- <br />180th Avenue NW from Barium Street to end <br />SB-22 <br />896 <br />1 7 1/2 <br />888 1/z <br />* = Depths and Elevations were rounded to the nearest 1/2 foot <br />We made water level measurements in the borings at the times and under the conditions stated <br />on the boring logs. The period of observation was relatively short and fluctuations in the <br />groundwater level may occur due to rainfall, flooding, irrigation, spring thaw, drainage, and other <br />seasonal and annual factors not evident at the time the observations were made. The intensity <br />and duration of these events or factors can significantly impact groundwater levels. In addition, <br />"extreme" weather events or other events, such as flooding, spring thaw, etc., could result in <br />groundwater levels higher than estimated or anticipated. <br />Groundwater monitoring wells or piezometers in conjunction with deeper borings would be <br />required to more accurately determine water levels. <br />3.4 Laboratory Tests <br />Twenty-four (24) laboratory moisture content tests, 22 gradations (grain size analyses), one (1) <br />percent passing the #200 sieve (P-200) tests were performed on samples of the aggregate base or <br />possible aggregate base materials. We also performed moisture content tests and organic content <br />tests on selected samples of the underlying subgrade soils. Because of the large number of total <br />tests, only the laboratory tests completed on the subgrade soil are summarized in Table 3. <br />Laboratory P-200 contents of the aggregate base materials ranged from about 3 to 26 percent. New <br />or "virgin" MN/DOT Class 5 aggregate base has a P-200 content between 3 and 10 percent. The <br />P-200 portion of the laboratory gradations completed on the Aggregate Base or Possible Aggregate <br />Base are presented on the boring logs. The full laboratory gradation results (Particle Size <br />Distribution Report) are included in the Appendix. <br />G <br />