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Report of Geotechnical Exploration West Armstrong Redevelopment Area, Ramsey, Minnesota March 30, 2022 AET Report No. P-0004952 AMERIAN ENGINEERING TESTING we were unable to determine the geologic origin from the recovered samples. We could not determine the geological origin based on the recovered samples. The fill and possible fill soils were frozen at the time of exploration. The fill is moderately slow draining and is judged to have moderate frost susceptibility. 5.2.2 Topsoil Topsoil was encountered at the surface of Boring SB-1. The topsoil extended to a depth of about 1 foot beneath existing grade. The topsoil consists primarily of silty sand. These soils were mostly frozen to a depth of 1 foot. These soils are slow draining and highly susceptible to freeze - thaw movements. Due to the presence of vegetation, we judge these soils to be moderately compressible under structural loads. 5.2.3 Coarse Alluvium Coarse alluvial sands exist beneath the topsoil, fill, or possible fill at all of the soil borings to the termination depths of the borings. The coarse alluvial soils consist of sands with silt and sands containing variable amounts of gravel, and could include cobbles and/or boulders. These alluvial soils range from very loose to medium dense and are judged to have moderate to moderately high strength and moderate to low compressibility under the anticipated structural loads. The sands and sands with silt are fast draining and are judged to have low susceptibility to freeze - thaw movements. 5.3 Groundwater We encountered groundwater while drilling at Boring SB-1 at a depth of 10 feet which equated to an approximate elevation of 859.3 feet. As the borings terminated in free draining sands, we judge the measured water level to be reflective of the hydrostatic groundwater level conditions at that point in time. Groundwater was not measured in Borings SB-2 and SB-3. Due to the borings terminating in free draining sands with silt and sands at depths/elevations near where the groundwater level was measured at Boring SB-1, we judge the water level to be below the depth explored at these boreholes at the time of exploration. Groundwater levels fluctuate due to varying seasonal and annual rainfall and snow melt amounts, as well as other factors. The Minneapolis metro area has been in a low precipitation pattern for the last 2 years and the presently observed ground water levels may be lower than normal. Page 3 of 7