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N-Values within the native sands ranged from 2 to 35 bpf. However, most of the values ranged <br />from about 2 to 15 bpf. These values indicate the sands had a very loose to dense relative density <br />but were generally very loose to medium dense. The higher N-Values (greater than about 30 bpf) <br />were likely due to gravel or cobbles. <br />3.3 Groundwater <br />Groundwater was encountered in some of the borings while drilling and sampling or after <br />removing the augers form the boreholes at depths ranging from about 5 to 101/2 below the ground <br />surface corresponding to elevations ranging from about 868 to 873. The observed water levels are <br />summarized in Table 2. <br />Table 2. Summary of Groundwater Levels <br />BoringGround <br />Number <br />Surface <br />Elevation (ft) <br />Approximate <br />Depth to <br />Groundwater (ft)* <br />Approximate <br />Groundwater <br />Elevation (ft)* <br />167th Lane NW <br />SB-01 <br />905.6 <br />NE <br />- <br />SB-02 <br />903.7 <br />NE <br />- <br />SB-03 <br />903.4 <br />NE <br />- <br />SB-04 <br />904.5 <br />NE <br />- <br />SB-05 <br />902.6 <br />NE <br />- <br />SB-06 <br />880.3 <br />101/2 <br />870 <br />SB-07 <br />876.3 <br />71/2 <br />869 <br />SB-08 <br />879.8 <br />NE <br />- <br />SB-09 <br />879.6 <br />NE <br />- <br />SB-10 <br />876.3 <br />7 <br />8691/2 <br />SB-11 <br />875.5 <br />71/2 <br />868 <br />SB-12 <br />876.3 <br />NE <br />- <br />SB-13 <br />877.5 <br />NE <br />- <br />SB-14 <br />878.6 <br />71/2 <br />871 <br />SB-15 <br />880.6 <br />71/2 <br />873 <br />168th Lane NW <br />SB-16 <br />877.7 <br />5 <br />8721/2 <br />SB-17 <br />877.7 <br />71/2 <br />870 <br />SB-18 <br />876.6 <br />5 <br />871 1/2 <br />SB-19 <br />875.7 <br />5 <br />8701/2 <br />SB-20 <br />877.3 <br />5 <br />8721/2 <br />Nutria Street NW <br />SB-21 <br />898.5 <br />NE <br />- <br />SB-22 <br />889.0 <br />NE <br />- <br />SB-23 <br />889.9 <br />NE <br />- <br />168th Avenue NW <br />SB-24 <br />906.9 <br />NE <br />- <br />SB-25 <br />906.6 <br />NE <br />- <br />SB-26 <br />906.7 <br />NE <br />- <br />SB-27 <br />906.1 <br />NE <br />- <br />SB-28 <br />909.8 <br />NE <br />- <br />5 <br />