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Lino Lakes 81st Street November 4, 2023 <br />Project #: 22538.23.MNT Page - 3 <br />________________________________________________________________________________________________________ <br /> M I N N E S O T A IOWA W I S C O N S I N <br />and then driven into the soil with a 140-pound hammer dropped repeatedly from a height of 30 inches above <br />the sampling rod. The sampler is driven 18 inches into the soil unless the material is too hard. The samples <br />are generally taken at 2½ to 5-foot intervals. The core of soil obtained was classified and logged by our <br />drilling personnel at the site and a representative portion was then sealed and delivered to our laboratory for <br />further review. <br />B.1. Strata <br />Three borings were drilled through existing roadways and encountered about 1 to 6 inches of asphalt over <br />4 to 6 inches of aggregate. The northeast boring was drilled in a green area for a possible roadway <br />extension and met about 1 foot of topsoil at the surface. <br />Below the surface materials, the borings were dominated by clean sands natural sands (poorly graded <br />sand and poorly graded sand with silt). All borings terminated in the sands. <br />For the reader’s convenience, we have summarized the soil boring data in the following cross -section. <br />The reader is referred to the boring logs in the Appendix for more detailed information. <br />B.2. Penetration Test Results <br />Penetration Test Results: The number of blows needed for the hammer to advance the penetration test <br />sampler is an indicator of soil characteristics. The results tend to be more meaningful for natural mineral <br />soils than for fill soils. In fill soils, density tests are more meaningful. <br />Penetration resistance values ("N" Value) of 4 to 10 blows per foot (BPF) were recorded in the sands DRAFT