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TASK 0 TOPOGRAPHIC SURVEY <br />AND DRILLING CONTRACTOR <br />SEH survey staff will locate and survey each test well site. <br />The drilling contractor will work as an SEH subcontractor. <br />SEH will: <br />o Survey the horizontal location and ground and <br />measuring point elevations for each test well and any <br />observation wells used in the pumping tests, so water <br />levels can be reported as elevations <br />o Manage the drilling contractor quote and schedule <br />(the quote is priced to the basis in Addendum No. 1 <br />and will be refined once the sites and expected geology <br />are final) <br />o Coordinate drill water supply from the City <br />and discharge routing with the City and the <br />drilling contractor <br />o Schedule drilling around right -of -access to each site <br />and the drilling contractor's availability <br />*/ Deliverables: Survey data for each site and the <br />executed drilling subcontract. <br />Assumptions: Sites are accessible by a truck -mounted <br />drill rig. Drill water is available from the City. The drilling <br />contractor is responsible for utility locates and for <br />reasonable site restoration. No well sealing is included. <br />SEH will manage the drilling contractor quote <br />and schedule, with the drilling company <br />being a subcontractor to SEH. <br />Our certified geologists provide <br />dedicated oversight during well drilling. <br />TASK 0 DRILLING OVERSIGHT <br />AND GEOLOGIC LOGGING <br />An SEH geologist will be on site for each test hole and test <br />well. Oversight will be completed under the supervision of <br />a Minnesota licensed professional geologist. SEH will: <br />o Log cuttings and core continuously during drilling, with <br />descriptions following ASTM D2488 for unconsolidated <br />materials and standard rock description practice <br />for bedrock, and will including color (Munsell), <br />grain size, sorting, moisture, cementation, and <br />sedimentary structures <br />o Identify the top of bedrock, the Tunnel City Group, the <br />Wonewoc Sandstone, and the top of the Eau Claire <br />Formation if reached, and confirm the casing seat and <br />open hole interval with the drilling contractor <br />*Optional — drilling subcontractor can perform geophysics <br />to help confirm unit top and bottom depths. While visual <br />inspection is a good indication of geological units, the <br />industry standard for confirmation is through geophysical <br />testing that can be performed by the drilling subcontractor. <br />SEH can compare these results to published values to <br />determine top and bottom of units. This optional task <br />would include the following: <br />o SEH will review drillers notes on water levels, drilling <br />rates, water production during drilling, and any lost <br />circulation or heaving conditions <br />o Drilling subcontractor will lay out drilling cores and SEH <br />will photograph samples in depth sequence and retain <br />representative samples <br />o SEH will generate boring logs in Bentley OpenGround, <br />the industry standard geotechnical data management <br />software, so logs are consistent across all four test <br />SHORT ELLIOTT HENDRICKSON INC. <br />WELL SITING ASSESSMENT FOR MUNICIPAL WELLS #9 AND #10 <br />