Field Exploration. ATL performed site reconnaissance. Project alignment will be accessible with our truck- mounted drill rig, and traffic officer and flag man with control signs and cones will be use during drilling operation for work personnel safety. Based on Boring Depth and Frequency requirements provided conduct geotechnical investigation involving six (6) at 15-ft deep soil borings for the road improvements. Soil samples will be obtained continuously to a depth of 15 ft. Standard Penetration Tests (SPT) will be performed in sands, if encountered, and clays will be sampled by Shelby tube. Shear strengths of the clays will be measured in the field with a hand penetrometer and correlations between this data and laboratory shear strength data will be made during analysis. Depth to ground water will be important for the design and construction of this project. For this reason, the borings will be drilled dry and the depth at which groundwater is encountered will be recorded. The boreholes will be grouted with cement-bentonite slurry after the completion of drilling and sampling.
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Sources: Professional Services, Professional Services