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,.J 08 November 2000 AGE-NC Project No. 95-0142 Page 7 of 9 3.6. PREPARATION OF CORRECTIVE ACTION PLAN Upon completion of the pilot study, an addendum to the CAP will be prepared presenting the findings of the pilot study. The addendum will present an evaluation of the feasibility and cost- effectiveness of ground water extraction. Conclusions and applicable recommendations will also be included in the addendum to the CAP. The report will be in a format acceptable to the PHS-EHD and the RWQCB, and will be reviewed and signed by a California Registered Geologist. 4.0. FIELD PROCEDURES All field procedures will be overseen by an AGE representative under the supervision of a California Registered Geologist.Procedures for the well installation, well development, dedicated low-flow pump installation, dedicated pressure transducer installation are detailed below. 4.1. PILOT SOIL BORING Two soil pilot borings will be established at the site to a maximum depth of 60 feet bsg utilizing a truck-mounted hollow-stem drill rig with 8.25-inch and 15-inch diameter hollow-stem augers for the ground water extraction well construction. The 8.25-inch augers will be utilized to advance the initial pilot boring to 60 feet bsg and to collect soil samples. The boring will then be enlarged to total depth utilizing the 15-inch augers. Cuttings generated during drilling will be placed in DOT-approved 55-gallon drums. Rinseate will be containerized in properly labeled DOT-approved 55-gallon drums, and stored on-site in an area lacking public access. Disposal alternatives will be evaluated based on results of soil and water analysis. 4.2. SOIL SAMPLE COLLECTION Soil samples will be collected at 5-foot intervals from 10 feet bsg to total depth using a California split-spoon sampler and brass sleeves. The sampler will be driven by dropping a 140-pound weight from a height of 30 inches. The number of blows required to drive each 6-inch length of the sampler (blow counts) will be recorded on boring logs compiled by an AGE staff geologist. Upon sample retrieval,the leading brass sleeve will be removed from the sampler. The ends of the sleeve will be immediately covered with Teflon sheets and sealed with plastic end caps secured with tape. The preserved samples will then be immediately placed under ice in a chilled container for transportation to a state-certified laboratory. Each soil sample sleeve will be labeled with boring location, vertical depth, sampling time, date and sampler's initials. The preserved soil samples will Advanced GeoEnvironmen[al,Inc.