Laserfiche WebLink
A California Professional Geologist will log all soil samples for hydrogeologic and lithologic <br /> characteristics according to the Unified Soil Classification System (USCS) (Table 2) and screen <br /> each sample for any organic vapors using a photoionization detector(PID). <br /> Observations will be recorded for the visual identification of any soil staining or discoloration in <br /> accordance with ASTM Method D 2488-84 for visual description and identification of soils. <br /> Appendix 2 describes the Field Sampling Program soil sampling procedures. <br /> It is anticipated that the five deep soil borings will be drilled first(four for SVE and one <br /> groundwater monitoring well). Soil samples will be collected at 5 foot intervals starting from <br /> five (5) foot bgs. A regional hardpan layer known to be present in this portion of Lodi which has <br /> been identified as the "A" Clay at the LNC site (Figure 12) is generally present in the subsurface <br /> at depths of 20 to 30 feet bgs. Once the "A"Clay has been identified vertically within each soil <br /> boring by inspection of the cores, lithologic sampling intervals will be increased to every 10 feet <br /> or as appropriate as determined by the onsite geologist. <br /> Continuous soil sampling will be conducted in the saturated zone for the monitoring well for <br /> characterization purposes. Soil samples will be collected using a split-spoon sampler containing <br /> three brass or stainless steel sleeves. The samples will be labeled, sealed, and capped for <br /> temporary onsite storage in ice-coolers. All soil sampling equipment will be cleaned in an <br /> Alconox solution and double rinsed prior to each use. <br /> Soil cuttings and rinsate water will be contained in a series of 55-gallon drums, labeled, and kept <br /> on site pending sampling to determine proper disposal. <br /> M ain\D:AEnvironmentaI\LN CV\10152007.wpd 34 <br />