05/19/1998 - Laserfiche WebLink

Home Browse Search

APR 7 '95 10:29 FROM AM ENG TST ST PAUL TO 97843462 PAGE. 003 AET #95-1343 - Page 3 soils Logs of the test borings are attached. The logs contain infbrmation concerning soil layering, soil classification, geologic description and moisture. Relative density or consistency is also noted, which is based on the standard penettation resistance (N -value). The boring logs only indicate the subsurface conditions at the sampled locations and variations often occur between and beyond borings. The gemralized geologic profile at the sites consists of about 21fi' to 8' of fill overlying peat swamp deposits, in turn underlain by water -deposited (alluvial) sandy soils. • The fill soils are mostly fine grained silty sands, which are sometimes inteani wd with peat and organic clay. Some sandy lean clays and lean clays are also present. Generally, the fill soils appear to be moderately compact, based on N - values, although fill stability appears to be rclarively low due to the inclusions of organic and wet clayey soils. • The swamp deposits are mostly hemic peat, with zones of organic clay and fibric peat. Borings #4 and #5 did not extend deep enough to penetrate the peat, and in fact, Boring #4 did not reach the natural swamp deposit. In the field area, the peat e=nds to depths ranging from 71fz' (at Boring #2) to at least 21' (Boring r) terminated in peat at 21'). • The coarse alluvium is classified as silty sand or sand with silt, which is mostly fine gr2ined.