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I I I I I I I 'I' I I I I I I I, I I I I Transport Tire, Inc. --2- March 1,. 1983 SUBSURFACE EXPLORATION PROCEDURES The field exploration consisted of two soil borings extending to 15.5 and 20.. 5 ft below the existing ground surface. The boring locations were selected and located in the field by STS personnel. Ground surface elevations at the locations of each of borings were also determined by our field personnel. The boring locations were referenced to an existing manhole near the intersection of the centerlines of 8th Avenue S.N. and 1st Street S.W. in New Brighton, Minnesota. The topographic survey supplied to us by DeWayne C. Olson Consulting Engineer shows the elevation of the benchmark to be +907.4. The locations of the borings are shown in the location diagram in the Appendix of this report. The soil borings were drilled with a truck-mounted CME-75 drill rig which used continuous flight augers to advance the boreholes to full depth. Wash water was not required during the drilling operation. Representative soil samples were obtained using the Split-Barrel Sampling Procedure in close conformance . with ASTM Specification D-1586. The Standard Penetration Resistance Test N-Values obtained during split-barrel sampling are shown on the soil boring logs by means of crossed circles on a graphical scale. Copies of these ASTM Specifications, describing the manner in which the soil samples were obtained, are included in the Appendix of this report. The soil samples obtained in this exploration program were preliminarily classified by the drill crew, sealed in glass jars to prevent moisture loss and returned to our laboratory for further examination and testing. STS Consultants, Ltd.