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S�O I�I� Stork Twin City Testing Corporation <br /> Materials Technology <br /> Proposed Addition at Residence 965 Edgewood Hills Road Page 5 of 9 <br /> Orono, Minnesota <br /> Stork Twin City Testing Corporation Project #3106831 <br /> 4.1 Project Data <br /> We understand that an addition on the west side of the existing house is proposed. The <br /> addition will be approximately 32' by 56' and have either a poured concrete or masonry <br /> foundation with a wood frame structure. The floor slab of the addition will match the <br /> slab elevation of the lower level of the existing house. <br /> 4.2 Discussion/Site Preparation <br /> The soils encountered by the soil borings showed very soft fill underlain by topsoil <br /> (borings B1 and B2) then terminating in tean clay glacial till. The existing fill and buried <br /> topsoil is not suitable to support the foundation for the proposed addition. Either a soil <br /> correction would need to be performed or the foundation would need to be lowered <br /> beneath the fill/topsoil layers and be supported by the suitable natural soil encountered <br /> at the site. Minimal soil correction would be needed for floor slab support. <br /> Site preparation should consist of removing the surface vegetation/topsoil and fill from <br /> the proposed bui�ding addition area. The subcut should continue to remove very soft <br /> clays encountered beneath the topsoil. Engineered fill may then be placed to attain <br /> footing elevation and site grades. The alternative would be to lower the foundation <br /> through the fill and topsoil layers and support the addition on the firm natural soil. <br /> The following tabulation shows the minimum recommended depth to competent soils for <br /> building support at the respective boring locations: <br /> Boring Ground Surface Minimum Approximate Elevation <br /> Number Elevation Excavation of Competent Soil <br /> (Ft) Depth (Ft) (Nearest '/2 Ft) <br /> B1 987.5 11 976'/2 <br /> B2 986.1 8 978 <br /> B3 987.1 10'/2 976'/z <br /> B4 992.8 10'/2 982'/2 <br /> This agreement shall be governed exclusively by the general terms and conditions of sale and performance of testing services by Stork Twin City <br /> Testing,Inc.a North Carolina business corporation("TCT")dd.02/04/2001. In no event shall Stork Twin City Testing,Inc.be liable for any <br /> consequential,special or indirect loss or any damages above the cost of the work. Payment is due within 30 days of invoice. <br />