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� <br /> 3.4 OSHA Soil Qassification <br /> The upper fill and swamp deposits encountered in the borings do not meet the OSHA <br /> Classifications for Type A, B or C soils. Temporary excavations in the swamp deposit soils <br /> will likely require side-slopes significantly flatter than those for Type C soils. <br /> The underling clay till soils encountered in the borings will generally be Type B soils under <br /> Department of Labor Occupational Safety and Health Administration(OSHA)guidelines. <br /> 4.0 DISCUSSION AND RECOMMENDATIONS <br /> 4.1 Propoaed Construction <br /> A lot survey or construction plans for the new house have not been prepared at this time. <br /> We assume the proposed house will be a slab-on-grade type with a main floor and garage <br /> floor grade of about 932 feet. The new home is assumed to be constructed with cast-in-place <br /> concrete or masonry block foundation walls supported on concrete spread footings with the <br /> above grade construction consisting of wood framing,a pitched roof and asphalt shingles. <br /> Based on the assumed construction we estimate wall loadings will range from about 1 to 2 <br /> kips(1,000 to 2,000 pounds)per lineal foot and column loads,if any,will be less than 50 kips <br /> (50,000 pounds). <br /> If the proposed loads exceed these values, the proposed grades differ by more than 2 feet <br /> from the assumed values or if the design or location of the proposed building changes, we <br /> should be informed. Additional analyses and revised recommendations may be necessary. <br /> 4.2 Discussion <br /> The soil borings encountered very loose or soft fill, swamp deposits and soft clay soils that <br /> extended to depths ranging from about 7 to 12 feet below the ground surface. These <br /> materials aze compressible and are not suitable for foundation support. Groundwater likely <br /> matches the water level of Lake Minnetonka which is at a depth of 3 to 4 feet below the <br /> ground surface. <br /> Briefly, the lot, in our opinion, is "buildable', however, soil corrections to remove the <br /> topsoil, fill, organic soil and soft clays and replacing them with suitable compacted <br /> engineered fill will be required for adequate foundation support. Soil corrections to remove <br /> theses material are anticipated to extend to depths ranging from about 7 to 12 feet. <br /> Given the close proxunity to Lake Minnetonka,extensive dewatering will likely be required <br /> to complete the soil corrections. In addition, the required excavation will likely require <br /> shoring in areas to prevent damage to existing streets and properties. <br /> 4 <br />