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March 2, 2020 <br />Project 19-460 <br />Jackson Hills Residential Suite <br />Phases II- IV <br />Elk River, Minnesota <br />Exploration Results: <br />The borings were conducted in the vacant lot and encountered organic material at the surface to <br />depths of 2.5 to 14.0 feet. The organic material generally consisted of black, fibrous peat (PT) <br />followed by light brown to white organic silt (OL) that was very soft. The following table shows <br />the depth of organic soils at each boring location. <br />Boring <br />Depth of Organic <br />Soils <br />Boring <br />Depth of Organic <br />Soils <br />Boring <br />Depth of Organic Soil <br />SB-1 <br />2.5 feet <br />SB-8 <br />5.0 feet <br />SB-15 <br />8.5 feet <br />SB-2 <br />2.5 feet <br />SB-9 <br />11.0 feet <br />SB-16 <br />8.0 feet <br />SB-3 <br />5.0 feet <br />SB-10 <br />8.5 feet <br />SB-17 <br />8.5 feet <br />SB-4 <br />2.0 feet <br />SB-11 <br />11.0 feet <br />SB-18 <br />3.5 feet <br />SB-5 <br />6.0 feet <br />SB-12 <br />14.0 feet <br />SB-19 <br />8.5 feet <br />SB-6 <br />5.5 feet <br />SB-13 <br />3.5 feet <br />SB-20 <br />5.0 feet <br />SB-7 <br />8.5 feet <br />SB-14 <br />8.0 feet <br />Below the peat and organic soils, the borings all encountered native fine and fine to medium <br />grained sands (SP, SP-SM, SM) to termination depths. <br />Penetration Test Results: <br />The standard penetration blow counts in the peat (PT) and organic silt (OL) soils ranged from 0 to <br />8, which are very low to low, indicating that they are in a very soft to soft condition. The standard <br />penetration blow counts in the native sand soils ranged from 1 to 15, which are very low to <br />moderate, indicating that they are in a very loose to medium dense condition. Refusal of the spoon <br />or auger did not occur in any of the borings. Drilling was relatively easy. <br />Water Level Observations: <br />Observations of the subsurface water conditions were made during drilling operations. <br />Groundwater was encountered in all of the borings at depths of 2' 6" to 9' 0" during drilling. The <br />following table shows the depth to water at each boring location: <br />Page 3 <br />