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Proposal for Geotechnical Services <br />Elk River Public Works Facility <br />Elk River, MN <br />Soil sampling in the borings will be performed at 2-1/2 foot intervals to a depth of 15 feet with <br />additional samples obtained at 5-foot intervals thereafter. Soil sampling will be performed in <br />general accordance with ASTM D 1586. A geotechnical engineer will visually classify field- <br />collected samples in accordance with ASTM D 2488. Each soil sample's color, relative <br />moisture, STP N-value, relative density, consistency and estimated compressive strength will be <br />documented on soil boring logs. <br />We will measure for the presence of groundwater or lack thereof when we complete each soil <br />boring. We will backfill the soil borings with soil cuttings or high solids bentonite grout to <br />comply with current Minnesota Department of Health Regulations. <br />We will perform laboratory tests on selected soil samples, including: <br />1. Plastic/liquid limit tests on cohesive soils <br />2. Moisture density tests <br />3. Gradations <br />Upon completion of the field and laboratory work, a geotechnical engineering report will be <br />prepared. The report will include the logs of the borings, location drawing and the results of the <br />field and laboratory tests. In addition, the report will include our engineering opinions and <br />recommendations regarding: <br />I . Site preparation and excavation recommendations. <br />2. Engineered fill and compaction recommendations. <br />3. Estimated depths of unsuitable soils to be removed at each boring location. <br />4. Anticipation and management of ground water for design and construction. <br />5. Recommendation for foundation design. <br />6. Bearing capacity and allowable loads. <br />7. Potential construction difficulties regarding excavation and backfill. <br />8. Estimated R-Value for use in bituminous pavement design. <br />9. Estimated subgrade modulus "K" for floor slab and concrete pavement design. <br />10. Recommended pavement design thickness. <br />NTI's engineers are also available to review earthwork, groundwater control, and other civil <br />plans and specifications as an additional service. <br />DELIVERABLES <br />NTI will provide three (3) paper copies and a PDF of the final report to the client. <br />Minneapolis • Fargo • Grand Forks <br />