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Rabbit Street NW <br />SB-29 <br />I <br />908.E <br />NE <br />- <br />169th Avenue NW <br />SB-30 <br />908.3 <br />NE <br />- <br />SB-31 <br />904.3 <br />NE <br />- <br />* = Depths and Elevations were rounded to the nearest 1/2 foot. NE = Not Encountered <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 />Thirty-one (31) laboratory moisture content tests and 31 percent passing the #200 sieve (P-200) <br />tests were performed on selected samples of the aggregate base or possible aggregate base <br />materials. Table 3 below provides a summary of the laboratory testing. Laboratory moisture <br />contents are also shown on the boring logs adjacent to the samples tested. <br />Laboratory P-200 contents of the aggregate base materials ranged from about 21/2 percent to 131/2 <br />percent with most of the P-200 contents between 5 and 12 percent. It should be noted that very <br />little "gravel" was observed in the soil samples. <br />Table 3. Summary of Laboratory Analysis <br />Borin g <br />Number <br />Sample <br />De th <br />p <br />(feet) <br />Moisture <br />Content <br />% *(�/)* <br />P-200 <br />167th Lane NW <br />SB-01 <br />AU-151 <br />Possible Agg Base <br />4 <br />10 <br />SB-02 <br />AU-101 <br />Possible Agg Base <br />41/2 <br />91/2 <br />SB-03 <br />AU-96 <br />Possible Agg Base <br />4 <br />7 <br />SB-04 <br />AU-91 <br />Possible Agg Base <br />61/2 <br />131/2 <br />SB-05 <br />AU-76 <br />Possible Agg Base <br />6 <br />21/2 <br />SB-06 <br />AU-71 <br />Possible Agg Base <br />8 <br />8 <br />SB-07 <br />AU-66 <br />Possible Agg Base <br />4 <br />8 <br />SB-08 <br />AU-61 <br />Possible Agg Base <br />31/2 <br />71/2 <br />SB-09 <br />AU-1 <br />Possible Agg Base <br />3 <br />4 <br />SB-10 <br />AU-6 <br />Possible Agg Base <br />31/2 <br />61/2 <br />SB-11 <br />AU-11 <br />Possible Agg Base <br />51/2 <br />6 <br />SB-12 <br />AU-16 <br />Possible Agg Base <br />4 <br />7 <br />SB-13 <br />AU-21 <br />Possible Agg Base <br />6 <br />5 <br />SB-14 <br />AU-26 <br />Possible Agg Base <br />51/2 <br />6 <br />6 <br />