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AMERICAN ENGINEERING TESTING, INC. AET Project No. 26-00538 <br /> 5.0 SITE CONDITIONS <br /> 5.1 Surface Observations <br /> The roads proposed for reconstruction extend through commercial areas with the exceptions of <br /> 3`d Street NW east of the intersection of Gates Avenue NW and 185", Avenue NW. 3`d Street <br /> NW east of Gates Avenue NW is a residential area with homes and multi-family housing on both <br /> sides of each street. The portion of 185h Avenue NW to be reconstructed is a frontage road to <br /> US Highway 10 and provides access to commercial properties and residential subdivisions. The <br /> new roadways will follow the same alignment as the existing roadways. <br /> 5.2 Subsurface Soils/Geology <br /> Below the bituminous pavement the site geology consists of existing fill soils overlying naturally <br /> deposited course alluvial sand, sand with silt sand with gravel and gravelly sand. Thickness of <br /> the bituminous pavement ranged from 2-inches to 7 inches thick. The existing fill depth ranged <br /> from 4 feet to 8 feet below grade. <br /> Subsurface soils which differed from the typical profile were encountered in a portion of the <br /> borings. Boring#8 encountered buried topsoil from a depth of 2 feet to 4 feet below the existing <br /> grade while Boring #5 encountered a buried layer of bituminous pavement. Borings #11, #12, <br /> and#14 encountered concrete rubble below the existing bituminous pavement. <br /> 5.3 Ground Water <br /> Ground water was encountered during drilling operations in Borings #7 and#8 at depths of 9 feet <br /> 7 feet below grade, respectively. Ground water was not encountered in the remaining borings at <br /> the time of boring completion. The water levels were encountered in relatively fast draining <br /> sands; therefore, it is our judgment that the measured water levels in these two borings could be <br /> the indication of a perched water table in that area. <br /> Ground water levels fluctuate due to varying seasonal and annual rainfall and snow melt <br /> amounts, as well as other factors. <br /> Page 3 of 9 <br />