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STâ–¡RI~® <br />Materials Technology Stork Twin City Testing Corporation <br />CONSTRUCTION OBSERVATIONS AND TESTING <br />The recommendations made in this report have been made based on the subsurface <br />conditions found in the borings. It is possible that there are soil and water conditions on <br />site that were not represented by the borings. Consequently, on-site observation during <br />construction is considered integral to the successful implementation of the <br />recommendations. We believe that qualified field personnel need to be on site at the <br />times outlined below to observe the site conditions and effectiveness of the <br />construction. <br />We recommend that the completed excavation and prepared subgrade be observed <br />and tested by a soils engineer/technician prior to fill placement or construction of any <br />foundation elements. These observations would be necessary to judge if all unsuitable <br />materials have been removed from within the planned construction area and that an <br />appropriate degree of lateral oversize has been provided for in those areas where fill will <br />be placed below the bottom of foundation grade. <br />We recommend a representative number of field density tests be taken in all engineered <br />fill placed to aid in judging its suitability. We suggest that at least one density test be <br />performed for at least every 2500 square feet of engineered fill placed for every 2' of fill <br />depth. Additional tests should be taken where confined areas are compacted. Any <br />proposed fill material should be submitted to the laboratory for tests to check <br />compliance with our recommendations and project specifications. <br />;p t:win Cd:Y t:est:mc;i Stork Twin City Testing Corporation is an operating united of Stork Materials Technology B.V., <br />T, c_,,_.,n Amsterdam, The Netherlands, which is a member of the Stork group