Laserfiche WebLink
2.2 SOIL SAMPLING <br /> 2.2.1 Excavation <br /> Soil samples SAC-4 and SAC-5 were collected at a depth of approximately nine feet below <br /> ground surface below the east and west ends of the concrete tie-down pad, respectively <br /> (Exhibit 2). The sampling was conducted by a professional environmental scientist trained <br /> and experienced in collecting soil samples. The samples were collected from a location <br /> approximately three feet below the tank in native soil under the direct supervision of Ms. <br /> Violett. <br /> The soil samples were collected from the backhoe bucket in thin-walled brass cylinders <br /> approximately four-inches long by two-inches in diameter. Pre-cleaned brass cylinders <br /> were supplied by the laboratory that performed subsequent analytical services. <br /> Approximately one inch of soil was removed from the immediate surface area when each <br /> sample was collected from the backhoe bucket. No headspace was present in the cylinder <br /> once the sample was collected. Each end of the cylinder was immediately covered with a <br /> teflon membrane and capped with a polyethylene lid, sealed and labeled. The samples <br /> were immediately placed in an ice chest and kept cold (4° C) for delivery to the laboratory. <br /> The samples were delivered to Caltest Analytical Laboratory in Napa, California. Caltest <br /> Laboratory is certified by the California State Department of Health Services. The Chain <br /> of Custody indicating date and time sampled and RMCI's relinquishment is included in <br /> Appendix A. <br /> Stockton ASR UST <br /> Removal/Closure Report 3 June 24, 1994 <br />