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Lino Lakes Red Maple Lane 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 pavement and encountered about 3 to 4 inches of asphalt over <br />6 inches of aggregate. The southeast boring was drilled in a green area and met about ½ foot of topsoil at <br />the surface. <br />Below the surface materials, the northern east boring encountered possible fill consisting of poorly graded <br />sand with silt to a depth of 2 feet. <br />Below the surface material, the borings were dominated by clean sands natural sands (poorly graded sand <br />and poorly graded sand with silt) with lesser layers of silty sand. The green area boring terminated in <br />these materials. The borings drilled through the pavements met clayey sand or sandy clay at about 13 ½ <br />feet and terminated in these materials. <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 />875 <br />880 <br />885 <br />890 <br />895 <br />900 <br />905 <br />3 2 1 4Approximate Elevation (feet)Boring Number <br />Pav. Mat'l <br />Topsoil <br />Sand Fill <br />Sand <br />Silty Sand <br />Clay or Clayey <br />Sand <br />NW <br />NE <br />SW <br />SE <br />326