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09-23-19-R
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09-23-19-R
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A <br />Proposal for Geotechnical Services <br />Old Snelling Avenue Roadway Improvements <br />%11� Arden Hills, Minnesota <br />Due to the anticipated traffic levels and speed limits for the project area, we propose that traffic control via <br />work ahead signs and flaggers should be sufficient for traffic control at the boring locations. <br />Soil sampling in the borings will be performed at 2 -1/2 -foot intervals to the termination depth of the borings. <br />Soil sampling will be performed in general accordance with ASTM D 1586. A geotechnical engineer will visually <br />classify field -collected samples in general accordance with ASTM D 2488. Each soil sample's color, relative <br />moisture, SPT N -value, relative density, consistency and estimated compressive strength will be documented <br />on soil boring logs. <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 />NTI's proposal does not include tree clearing or ground pressure reducing mats, etc. If required, NTI will <br />contact the signatory of this proposal for approval of additional fees prior to implementation. <br />We will measure for the presence of groundwater or lack thereof when we complete the soil borings. We will <br />also take a water level reading 10 minutes after water is first encountered, and upon termination of the <br />borehole. We will backfill the soil borings with soil cuttings or high solids bentonite grout to comply with <br />current MDH regulations. <br />We will perform laboratory tests on samples selected by a representative of SEH. Our proposal fee includes the <br />following: <br />• Moisture Content tests (70) <br />• Atterberg Limits tests (5) <br />• Mechanical sieve through the No. 200 only (5) <br />• Mechanical nest of sieves through No. 200 (5) <br />• Standard Proctor tests (3) <br />• Hveem Stabilometer (R -Value) tests (3) <br />Upon completion of the field and laboratory work, a geotechnical data report will be prepared. The report will <br />include the logs of the borings, boring location diagram, and the results of the field and laboratory tests. <br />NTI's engineers are also available to provide geotechnical guidance to the design team, evaluate value <br />engineered alternatives, review earthwork, groundwater control, and other civil plans and specifications as an <br />additional service. NTI's engineers, special inspectors and technicians are available to provide construction and <br />materials testing services once the project construction begins. This provides professional continuity of <br />services throughout the design and construction of the project. <br />
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