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AET//20-02044 - Page 4 <br /> <br /> General Profile <br /> <br />The borings indicate a general soil profile consisting of topsoil or swamp deposits underlain by <br />interlayered fmc, coarse, and mixed alluvium, and glacial till. <br /> <br /> Topsoil/Swamp Deposits <br /> <br />The topsoil or swamp deposits (where present) is about 1' to 4' thick at the boring locations, and <br />consists primarily of dark brown to black clayey sands, silty sands, lean clays, silty clays and <br />organic clays. <br /> <br /> Alluvium <br /> <br />Fine alluvium or mixed alluvium is present at many borings and consists of lean clays, silts, sandy <br />lean clays, clayey sands, and silty sands. The fmc and mixed alluvium are often interlayered <br />within the coarse alluvium or till. Coarse alluvium consisting of silty sands, sands with silt, and <br />sands is present at most of the borings. The cohesive parts of the fmc or mixed alluvium is very <br />soft to very stiff and the more granular portions are very loose to medium dense. The coarse <br />alluvium ranges from very loose to medium dense. <br /> <br /> Till <br /> <br />Glacial till, some of which is weathered, is present beneath the topsoil and/or alluvium. The <br />glacial till consists of lean clays, clayey sands, and silty sands. The till ranges from soft/loose to <br />very stiff/medium dense. Some lenses of waterbearing sands are present in parts of the till. <br /> <br />Water Level Measurements <br /> <br />The boreholes were probed for the presence of ground water and water level measurements were <br />taken. The measurements are recorded on the boring logs. A discussion of the water level <br />measurement methods is presented in the SUBSURFACE EXPLORATION section of this report. <br /> <br /> <br />