02-27-2002 Council Agenda - Laserfiche WebLink

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FEB 14 '02 05:34PM BRAUN INTERTEC Drywall Supply, Inc. BBXX- 02 -010A January 29, 2002 Page 11 P.15/24 D.2. Soil Classification Soils encountered in the borings were visually and manually classified in the field by the crew chief in accordance with ASTM Test Method D 2488, "Description and Identification of Soils (Visual - Manual Procedures)." A chart explaining the classification system used is attached. Samples were sealed in glass jars and returned to our laboratory for review of the field classifications by a soils engineer. Representative samples will be retained in our St. Paul office for a period of 60 days to he available for examination. D.3. Groundwater Observations Immediately after taking the Final sample in the bottom of each penetration test boring, the drillers probed through the hollow -stem auger to check for the presence of water. Immediately after withdrawal of the auger, the drillers again probed each hole and noted the depth to water or cave -in. The borings were then backfilled. E. General Recommendations E.1. Basis of Recommendations The preliminary analysis and recommendations submitted in this report are based upon the data obtained from the soil borings perionned at the locations indicated on the attached sketch. Often, variations occur between these borings, the nature and extent of which do not become evident until additional exploration or construction is conducted. A reevaluation of the recommendations in this report should be made after performing on -site observations during construction to note the characteristics of any variations. The variations may result in additional construction costs, and it is suggested that a contingency be provided for this purpose. It is recomtnended that we be retained to perform the observation and testing program for the site preparation phase of the project. This will allow correlation of the soil conditions encountered during construction to the soil borings, and will provide continuity of professional responsibility.