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<br /> <br /> <br />Geotechnical Report <br />2020 PMP Street Improvements <br />Arden Hills, Minnesota <br />WSB Project No. 014297-000 Page 4 <br />3.4 Groundwater Conditions <br />WSB took groundwater level readings in the exploratory borings, reviewed the data obtained, and <br />discussed its interpretation of the data in the text of the report. <br /> <br />Groundwater was not observed during or shortly after drilling and sampling, however, many of the borings <br />encountered lean clay soils at depth. In clay soils, it may take a long time (longer than what was <br />available with our time on site) for water to enter a bore hole and rise to its hydrostatic level. <br />Nevertheless, the lean clay soils in many instances were wet and contained sand lenses. Based on our <br />observations and the apparent moisture content in the penetration test samples it is our opinion that <br />water, given time, would have seeped into many of our boreholes where wet clays were encountered. <br /> <br />Note that groundwater levels may fluctuate due to seasonal variations (e.g. precipitation, snowmelt and <br />rainfall) and/or other factors not evident at the time of measurement. <br /> <br />