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Proposal for Geotechnical Services <br /> 7073 Centerville Road Project <br /> Centerville, Minnesota <br /> NTI will install a temporary water level indicator to check ground water elevations approximately 24 hours later. <br /> The borehole will then be abandoned per Minnesota Department of Health guidelines. <br /> NTI has assumed that there is reasonable access to the proposed borehole locations. This would include slopes <br /> suitable for traversing with a geotechnical drill rig, safe working distances from utilities, removal of site <br /> obstructions that prohibit access to the proposed borehole locations, etc. In addition, drill rig access to the <br /> proposed boring locations may result in cracking of onsite pavements or sidewalks and rutting of site soils. NTI <br /> will take reasonable precautions to prevent such damage but repair and final restoration inclusive of settled <br /> borings shall be performed by others at no charge to NTI. <br /> Soil sampling in the borings will be performed at 2-1/2-foot intervals to a depth of 15 feet with additional <br /> samples obtained at 5-foot intervals thereafter. Soil sampling will be performed in general accordance with <br /> ASTM D 1586. A geotechnical engineer will visually classify field-collected samples in general accordance with <br /> ASTM D 2488. Each soil sample's color, relative moisture, SPT N-value, relative density, consistency and <br /> estimated compressive strength will be documented on soil boring logs. <br /> We will measure for the presence of groundwater or lack thereof when we complete each soil boring. We will <br /> backfill the soil borings with soil cuttings or high solids bentonite grout to comply with current Minnesota <br /> Department of Health Regulations. <br /> We will perform laboratory tests on selected soil samples, this may include: <br /> 1. Plastic/liquid limit tests on cohesive soils. <br /> 2. Moisture tests. <br /> 3. Gradations. <br /> 4. Organic content tests. <br /> Upon completion of the field and laboratory work, a preliminary geotechnical engineering report will be <br /> prepared. The report will include the logs of the borings, location drawing, and the results of the field and <br /> laboratory tests. In addition, the report will include our preliminary engineering opinions and recommendations <br /> regarding: <br /> 92 <br />