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October 7, 2024 <br />ITT Project 24-327 <br />Various Gravel Roads <br />IP 25-07 <br />Ramsey, Minnesota <br />General Site Conditions: <br />The projects are located throughout the city of Ramsey. All the streets are in older <br />residential areas. The sites are all relatively flat and level, with slopes of 2-6 percent. <br />Available Subsurface Information: <br />According to the Geologic Map of Minnesota, Quaternary Geology, prepared by Howard C. <br />Hobbs and Joseph E. Goebel (1982, Minnesota Geological Survey), most of the sites lie within <br />an outwash unit not associated with a particular moraine. It is associated with the Des Moines <br />glaciation of Pleistocene, Late Wisconsinan age. The drift is derived from parent material in <br />North Dakota and Manitoba. The northernmost site lies within an end moraine of the Pine City <br />Moraine Association. This is also associated with the Des Moines Lobe glaciation. The grey, <br />calcareous drift is derived from parent material from Manitoba and eastern North Dakota. <br />According to the Soil Survey of Anoka County prepared by the Soil Conservation Service, most of <br />the sites lie within the Hubbard- Nymore Soil Associations. These consist of nearly level to gently <br />sloping, excessively drained soils that are sandy throughout. The individual soils mapped on these <br />sites are sandy and have few limitations for development of local roads and streets. However, the <br />middle portion of Potassium Street in Area D is mapped as mucky peat with severe limitations for <br />local street construction. <br />The northernmost site lies within the Heyder- Kingsley- Hayden Soil Association, which consist of <br />gently undulating to steep, well drained soils formed in loamy glacial till. They are generally fairly <br />well suited for construction of local streets. However, the north half of Xenolith Street NW is <br />mapped as mucky peat with severe limitations for local street construction. <br />B. Exploration Program <br />Twenty- four (24) split -spoon soil borings were conducted on this project. The borings were advanced <br />to depths of 10 feet using a 3 1/4 inch I.D. hollow stem auger. Samples were obtained every 2'/Z feet <br />using a 2-inch O.D. split -spoon sampler in accordance with the American Society for Testing and <br />Materials (ASTM D1586). Standard penetration values (N-values) were obtained at each sample <br />interval by driving the sampler into the soil using a 140-pound hammer falling 30 inches. After an <br />Page 2 <br />