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M 15 November 2005 AGE-NC Project No 95-0130 Page 9 of 10 as the cone penetrometer is advanced to total depth A continuous boring log will be generated utilizing the Hogentogler Co CPT computer program The Hogentogler Co computer program will utilize the CPT Soil Behavior Classification System (Robertson, P K , Campanella,R G, Gillespie, D and Greig, J , 1986), to generate a general lithology type and display on a CPT boring log Rinseate generated during drilling activities will be containerized in properly labeled Department of Transportation (DOT)-approved 55-gallon drums, and stored on-site in an area lacking public access Disposal alternatives will be evaluated at a later date based on laboratory results of rinseate Additional CPT literature is included in Appendix A 42 CPT GROUND WATER SAMPLING Multiple soil borings will be located adjacent each CPT boring (approximately 2 feet) to acquire independent grab ground water samples in each targeted zone Based on CPT findings,discrete grab ground water samples will be collected in significant intervals of porous and permeable strata A Hydro-Punch sample tool will be pushed into the specified zone, then withdrawn approximately three to four feet to expose an inlet screen The interior of the sampling tool will fill with formation water Then water from within the sampling rods will be purged using a Waterra inertia pump and dedicated tubing check bailer Approximately five gallons of the ground water will be removed from the 2-inch diameter hollow-stem rod The groundwater will be sampled through the dedicated tubing equipped with 0 45 micron in-line field filter to isolate the dissolved phase hydrocarbons All rmseate generated during drilling activities will be containerized in properly labeled DOT-approved 55-gallon drums, and stored on-site in an area lacking public access Additional CPT grab ground water sampling procedures are included in Appendix A Following sample collection, the samples will be transferred to laboratory-supplied containers, properly labeled and placed in a chilled container to be transported under chain of custody to a DHS-certified laboratory for analysis 4 3 EQUIPMENT DECONTAMINATION All sampling tools used for sample collection will be thoroughly rinsed with clean water after being washed with a solution of Alconox All down-hole drilling and sampling equipment will be pressure washed prior to starting each boring • Advanced GcoEnvironmentaI,Inc