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Lino Lakes 81st Street November 4, 2023 <br />Project #: 22538.23.MNT Page - 2 <br />________________________________________________________________________________________________________ <br /> M I N N E S O T A IOWA W I S C O N S I N <br />Design Phase Geotechnical Report <br />81st Street to Elbe Street Infrastructure Improvements <br />Lino Lakes, Minnesota <br />CVT Project Number: 22538.23.MNS <br />Date: November 4, 2023 <br />A. Introduction <br />The intent of this report is to present our findings and describe the means used to collect the data. The data <br />was collected for a specific purpose and may not be suitable for other purposes. We should be consulted <br />before attempting to use the data for other uses. A complete and thorough review of the entire document, <br />including its assumptions and its appendices, should be undertaken immediately upon receipt. <br />A.1. Purpose <br />This geotechnical report was prepared to assist planning for proposed infrastructure improvements of the <br />subdivision located northeast of 81st Street to Elbe Street in Lino Lakes, Minnesota. Our services were <br />authorized by Mr. Michael Grochala from The City of Lino Lakes. <br />A.2. Scope <br />To obtain data for analysis, a total of four (4) penetration test borings were performed. The borings were <br />drilled to depths of about 9 ½ to 14.9 feet. Our engineering scope consisted of providing this report of <br />our procedures, findings and geotechnical recommendations for construction and design of potential <br />utility replacements and paved areas. <br />A.3. Boring Locations and Elevations <br />The preferred boring locations were indicated to Chosen Valley Testing (CVT) on a site plan provided by <br />the city. The Boring Location Sketch in the Appendix shows the approximate locations as drilled on aerial <br />imagery using Google Earth software. Ground surface elevations were estimated using MnTOPO <br />software from the Minnesota DNR and are indicated on the Log of Boring sheets in the Appendix. The <br />elevations should be considered approximate. <br />A.4. Geologic Background <br />A geotechnical report is based on subsurface data collected for the specific structure or problem. Available <br />geologic data from the region can help interpretation of the data and is briefly summarized in this section. <br />Geologic maps indicate the soils in the area are dominated by lacustrine deposited of sands. Bedrock is <br />commonly more than 200 feet below the surface and is not a consideration for this project. <br />B. Subsurface Data <br />The borings were performed using penetration test procedures (Method of Test D1586 of the American <br />Society for Testing and Materials). This procedure allows for the extraction of intact soil specimen from deep <br />in the ground. With this method, a hollow -stem auger is drilled to the desired sampling depth. A 2 -inch OD <br />sampling tube is then screwed onto the end of a sampling rod, inserted through the hole in the auger's tip,