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An exception shown on the map is an area named Tadkee depressional complex which consists of <br /> muck over beach sand over till. This soil type is a minor part of the site and will not be an influence on <br /> house or deck foundations. <br /> Findings and Assessment: <br /> House Footings: <br /> The planned structure will be a full basement walkout. According to the survey, the lowest basement <br /> floor elevation is set for 967.6 feet. Assuming an additional 4.5 feet below floor for frost protection in <br /> the walkout area, footings will be set at elevation of about 963 feet. The survey also shows a proposed <br /> ground elevation at the rear of the house at 967.1 feet in an area where interpolation between contour <br /> lines indicates that the existing ground surface is presently at elevation 965 feet. A geotechnical <br /> inspection will be required of the footing trenches during excavation to locate competent bearing soil. <br /> Some trenches may not reach through the topsoil and depending upon the geotechnical inspection, <br /> some footings may require deepening or corrective filling. The lean clay can be expected to provide <br /> adequate soil bearing capacity for single family residential dwelling footings, designed for clay. <br /> Deck Footings: <br /> From conversations with you in the field, it is understood you have access to construction equipment <br /> that allows for installation of auger piles. It is recommended that this equipment be utilized to install <br /> deck pier foundations. This will minimize soil disturbance. The installation of the augured piers should <br /> be inspected by a geotechnical engineer during installation. <br /> Recommendations: <br /> All excavations will require silt fencing to prevent down slope erosion protection. The rear yard fill in the <br /> walkout area should be immediately protected after excavation, with commercial netting and straw. <br /> Your engineer and surveyor should design all runoff discharge from the new house, yards, walks and <br /> driveways. The use of rain gardens or small retention ponds may be adviseable, and can be readily <br /> designed for one or both sides of the proposed structure with minimal grading. <br /> With careful attention to slope protection during and after construction, it is my opinion that existing <br /> soils at this site have sufficient stability to allow construction of a home at the site indicated on the Lot <br /> Surveys Company certificate without the risk of loss of support due to slope collapse. <br /> I hereby certify that this report was prepared by me ,++ ►,, ++ +'Ri ' <br /> and that I am a duly Licensed Professional Engineer �'` r ' ''r�'� • w �.•.........0 <br /> under the laws of the State of Minnesota. -o _ <br /> AL <br /> Carl E. Anderson, P. E., P. G. ...... <br /> '••• .r'�t����. �'�� °°�••'°' � <br /> 0 'J . ©F M1Nl�'. <br /> Registration Number 10736 '�:i,Fiy;t++` '��,a,,,,++' <br />