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' Work Plan-Soil and Groundwater Invcsdgadon Herman&Helen's Marina May 30, 1995 Page 4- Unified Soil Classification System. Drilling logs will contain field observations including soil type, ' estimated moisture content, presence of staining or odor, and field OVA measurements. The soil samples collected from the capillary fringe (3 samples total) will be retained, ' undisturbed, in the brass liners for laboratory analyses. The liners will be sealed at the ends with Teflon tape, capped, wrapped with duct tape, and labeled. The samples will be stored in a cooler ' chilled with Blue Ice and delivered within 24 hours of collection, under chain-of-custody procedures, to FGL Laboratory of Stockton, California. The samples will be analyzed using U.S. EPA Methods tand California-approved methods under strict quality assurance measures. ' The soil cuttings from the borings and steam cleaning effluent will be placed in DOT- approved 55-gallon drums, sealed, labeled, and left on site pending laboratory analyses. Disposal of ' hazardous materials, if any, will be the responsibility of the property owner. ' 3.4 Hydropunch H- Groundwater Sampling The Hydropunch II is a sampler designed to be pushed or driven into the aquifer from the ' bottom of a drilled borehole, using a drill rig, to collect a groundwater sample from a discrete zone. The sampler utilizes an air-tight and water-tight sealed PVC intake screen and stainless steel sample ' chamber which is isolated from the surrounding environment as the sampler is advanced (See Figure 3, Appendix A for Hydropunch II design). When the desired depth for collection of a groundwater ' sample is reached, the Hydropunch is opened by pulling back on the body of the sampler, exposing the screen. When the screen is full, a Teflon bailer is lowered into the Hydropunch push rod and a ' groundwater sample is retrieved from the sample chamber. ' The groundwater sampling will be conducted by B&F Drilling, under the supervision of a Condor geologist. Prior to sampling, the Hydropunch II sampler and Teflon bailer will be cleaned in ' a solution of laboratory-grade, non-phosphate detergent and hydrocarbon-free water, and then double- rinsed with hydrocarbon-free water. The Hydropunch will be lowered to the bottom of the boring, just ' above the water table, and pushed approximately 4 feet ahead of the augers. The rod will then be withdrawn to expose approximately 3.5 feet of the PVC screen so that groundwater will enter the ' sampling chamber. La CONDOR 1