Laserfiche WebLink
Robert Rimstad <br />April 26, 2011 <br />AET No. 03 -03944 <br />Page 2 of 6 <br />2.0 Site Exploration and Testing <br />2.12005 Soil Borings <br />Eleven standard penetration test borings and one hand auger boring were conducted at the site in <br />August of 2005. Log of the test borings are attached. The boring locations appear on attached <br />Figure 1 (the parking lot layout on that figure does not reflect the current design). <br />The boring logs contain information concerning soil layering, soil classification, geologic <br />description, and moisture condition. Relative density or consistency is also noted, which is based <br />on the standard penetration resistance (N- value). <br />We refer you to the standard sheet entitled "Exploration/Classification Methods" for details on <br />the drilling and sampling methods, the classification methods, and the water level measurement <br />methods. Data sheets concerning the Unified Soils Classification System, the descriptive <br />terminology, and the symbols used on the boring logs are also attached. <br />2.2 2011 Geoprobes <br />As a part of the environmental services conducted for the project, AET also conducted ten <br />geoprobe tests. The locations of these geoprobe tests appear on attached Figure 2. The logs of the <br />geoprobes are also attached, following the logs of the standard penetration test borings. We refer <br />you to the environmental report for more details associated with this testing. <br />3.0 Conditions Encountered <br />3.1 Soils <br />The natural geology below the site is predominantly glacially deposited till. The till has a soil <br />classification ranging from silty sand to clayey sand to sandy lean clay. Based on the N- values, <br />the silty sand zones of the till are medium dense to dense. The consistency of the clayey till is <br />stiff to hard. <br />Occasionally, alluvial soils appear above or interbedded within the till. The alluvial soil types <br />range from clays to silts to sands. <br />Demolition -type fill has been placed at the site which accounts for its higher elevation. The fill <br />contains significant mineral component (silty sands, clayey sands, sands with silts, clays, etc.), <br />but also includes debris, such as pieces of concrete, bituminous, pile, wood, and ashes and <br />cinders. We refer you to the environmental report for additional details. <br />50 <br />