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March 15, 1994 <br />SCHOEUL. & MAOSON, INC. <br />• SURVEYORS • PUNNERS <br />SOL TESTING • ENMRONMENfTAL SERVICES <br />1 osao wAyzata boulevapo • smre i • fYUNMcroNucA. mn osacs-152! <br />(siai 8«*a-7«ai • rax ceiai SAS-aoea <br />David Vergeyle <br />%Streeter 8c Associates, Inc. <br />18300 Minnetonka Blvd., Suite 208 <br />Wayzata, MN 55391 <br />Subject:Soil Borings for Lot 1, Block 1, Green <br />Trees on Tanager Lake, Orono, MN <br />Dear Mr. Vergeyle: <br />We were authorized to perform a geotechnical investigation for the above referenced <br />project. The purpose of the investigation was to gather information to assist in the evaluation <br />of soil and ground water conditions relative to foundation support and construction of the <br />house near the bluff. Two standard penetration borings were performed on the site as part of <br />this investigation. The interpretation of the results are contained in this letter. The boring <br />locations were selected in the field by your builder Steve Streeter and our representative. <br />METHODOLOGY <br />The borings were performed with a truck mounted CME 55 rig, using 4 1/4" inside <br />diameter hollow stem auger. Soil samples were collected using a 2" outside diameter steel <br />split barrel sampler. The sampler is attached to drill rods and lowered down inside the <br />auger. The sampler is then driven into the ground ahead of the auger using a 140 pound <br />hammer with a 30 inch drop. The sampler is driven 2 feel with the number of hammer <br />blows recorded in 6 inch increments. The blows from the first 6 inches and the last 6 <br />inches are disregarded. The blows from the intermediate 1 foot are reported on the boring <br />log and are and indication of the soil strength characteristics. Samples were taken at 2 1/2 <br />foot intervals to the termination depth of the borings. A portion of each sample was sealed <br />in a glass jar. <br />Soil identification was performed using ASTM D:2488 (Visual-Manual Procedures). <br />Preliminary classification was performed in the field, with final determination made in the <br />laboratory. The samples will be retained and are available for your examination. <br />The holes were probed immediately after the auger was withdrawn to check for the <br />presence of groundwater. The holes were then backfilled with a mixture of bentonite and <br />drill cuttings. <br />affirmative action • equal OPPORTUIMITV EMPLOYER