4945 OCEAN AVE 2018-01-02 MF Import

GEOTECHNICAL ENGINEERING STUDY Mr. Rick Remsing E-10558 May 5, 2003 Page 4 Site Preparation and General Earthwork Based on the preliminary site plan, it appears site earthwork will include excavating for the basement level foundations, installing underground utilities and grading the access roadway. The building and driveway areas should be stripped and cleared of surface vegetation, organic matter and other deleterious material. Existing utility pipes to be abandoned should be plugged or removed so that they do not provide a conduit for water and cause soil saturation and stability problems. Based on the thickness of the topsoil layer, encountered at our test pit locations, we estimate a stripping depth of six inches. Stripped materials should not be mixed with materials to be used as structural fill. Following the stripping and excavation, the ground surface where structural fill, foundations, or slabs are to be placed should be observed by a representative of ECI. Soil in loose or soft areas, if recompacted and still yielding, should be overexcavated and replaced with structural fill to a depth that will provide a stable base beneath the general structural fill. The optional use of a geotextile fabric placed directly on the overexcavated surface may help to bridge unstable areas. The soils encountered during the site exploration are moisture sensitive due to their high fines content. As such, in an exposed condition, they will become disturbed from normal construction activity, especially when in a wet or saturated condition. Once disturbed, in a wet condition, they will be unsuitable for support of foundations, slabs or pavements. Therefore, during construction where these soils are exposed and will support new structures, care must be exercised not to disturb their condition. Consideration should be given to placement of rock or other methods to protect exposed native, undisturbed soils that will support foundations or new structural fill. If disturbed conditions develop, the affected soils must be removed and replaced with structural fill. The depth of removal will be dependent on the level of disturbance developed during construction. Given the above. a summer earthwork schedule is recommended. Earth Consultants, Inc.