Laserfiche WebLink
t <br /> •,�,, ,��IJ�IINC SACRAMENTO <br /> 3.0 SOIL INVESTIGATION <br /> This section describes the methodology used to determine whether or not past <br /> operation performed at the site impacted the soil. Included in this section are discussions <br /> of the following: the coring of the holes, soil sampling procedure, laboratory analysis and <br /> analytical results of soil samples, and storage and disposal of wastes. <br /> 3.1 Coring of Holes <br /> ACtotaI of four holes were cored at the site to evaluate the soil and groundwater <br /> i <br /> conditions. Each hole was advanced with a hydraulically driven corer using a 1-3/4 inch <br /> coring rod. The four corings (SP-1, SP-2, SP-3, and SP-4) were cored to a depth of <br /> i approximately 18, 21, 21, and 18 feet bgs, respectively. A permit dated November 30, <br /> 1993 was obtained from the San Joaquin County Public Health Services Environmental <br /> t <br /> f Health Division to perform the drilling at the site and is included as Appendix A. <br /> l A Versa.r geologist was onsite to log each hole as it was cored. The exact locations <br /> i of the corings were determined in the field and are depicted in Figure 3. The soils <br /> encountered were characterized according to the Unified Soil Classification System <br /> (ASTM D-2487), and included notations of all other pertinent characteristics. A geologist <br /> . registered in the State of California reviewed the coring logs produced. The coring logs <br /> are included in Appendix B. <br /> The corings, hereinafter referred to as sample points, were located such that a soil <br /> and water sample could be collected from each of the areas adjacent to the four sides of <br /> the building. SP-1 was cored to a depth of 18 feet bgs on the east side of the building, <br /> adjacent to the former air compressor. Water was first encountered at 16 feet bgs, and y �.�• ' <br /> rose to a static level of approximately 12 feet bgs. SP-2 was cored in the open field 38 <br /> 1 feet from the north side of the building to a depth of 21 feet. Water was encountered at <br /> 19 feet bgs and rose to a static level of approximately 12 feet bgs. SP-3 was cored nine <br /> it k <br />