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GEOMATRIX i.r • Mr. Michael L. Traubenik, Project Manger/Principal Geotechnical Engineer • Mr. Gregg S. Beukelman, Staff Geologist (field exploration) 1.3 REPORT ORGANIZATION The site and the facilities that will be constructed are described in Section 2.0. The field and laboratory testing performed for this study are discussed briefly in Section 3.0. Section 4.0 summarizes the site's subsurface soil and groundwater conditions. Geotechnical recommendations and other considerations for the geotechnical design for the pump station are discussed in Section 5.0. Finally, design recommendations for site pavement sections are described in Section 6.0. +� 2.0 SITE AND PROJECT DESCRIPTION The proposed site of the Lewis Manor pump station is located approximately 80 feet south of West 12fl' Street on the southwest corner of its intersection with Coolidge Avenue in Tracy, California(Figure 2). The site has plan dimensions of about 50 feet by 150 feet and is +o occupied by an existing well and pump station. The new pump station will be constructed at the site (Figure 3). The existing well will be abandoned and the existing pump station will be demolished. The site lies in a relatively flat area of southwest Tracy. The area has mixed use residential and small businesses, We understand that the proposed construction includes a new water well and pump station structure (Figure 3). The pump station will be surrounded by new pavements. The new pump '-' station will be a masonry block building that will be designed to be compatible with the surrounding neighborhood. The new pump station will have plan dimensions of about 30 feet two by 37 feet and will positioned over the new water well. There are no buried or partly buried structures planned at the site. We understand that the loads imposed on the underlying soil by the pump station structure will be relatively light. The pump, riser pipe, and motor will weigh about 18.5 kips and be distributed over an area of about 12 square feet. The engine generator and enclosure will weight about 8.4 kips and be distributed over an area of about 45 square feet. LN 3.0 FIELD EXPLORATION AND LABORATORY TESTING +r Field exploration performed during this study consisted of the drilling, logging, and sampling of one flight auger boring. The approximate location of the boring is shown on Figure 3. The La I:Trojcct15000s153131LE WIS-MAN.DOC 2