Laserfiche WebLink
r+ <br /> March 9, 1988 AGS 038009-1 <br /> Fire Engine Company No. 2, Stockton, California <br /> by <br /> 1 <br /> PROPOSED WORK <br /> The proposed investigation is designed to define the degree and <br /> lateral extent of hydrocarbon contamination on site. The <br /> following specific work elements are proposed: <br /> 1) Excavation of three soil borings as shown on the Generalized <br /> Site Plan (Plate P-2) . The borings will be drilled to a <br /> point 20 feet below the ground-water surface, or to an <br /> estimated depth of 40 feet below the ground surface, and <br /> will be used for the installation of ground-water monitoring <br /> wells. <br /> 2) Collection and classification of relatively undisturbed soil <br /> samples taken at 5-foot intervals in the soil borings. <br /> 3) Construction of three ground-water monitoring wells in the <br /> boreholes with2-inch inner-diameter polyvinyl chloride <br /> (PVC) casing. <br /> 4) Development of the wells and collection of ground-water <br /> samples. <br /> 5) Analyses of selected soil and ground-water samples for <br /> gasoline product constituents in a California State- <br /> certified laboratory. <br /> 6) Evaluation of local ground-water gradient by surveying the <br /> top of each well casing, measuring static ground-water <br /> depths in the wells, and calculating the relative elevation <br /> of the ground-water surface in each well. <br /> 7) Interpretation of field and laboratory data to evaluate the <br /> extent of contamination. <br /> J 8) Description of subsurface conditions at the site as .revealed <br /> in the borings. <br /> 9) Installation of additional off-site monitoring wells, if <br /> necessary, to adequately delineate the extent of subsurface <br /> contamination. <br /> 8 <br /> A,op/ied r 60SYSMMS <br />