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Nkow. %"we 16 July 2002 AGE-NC Project No. 95-0135 Page 5 of 7 4.3. REPORT PREPARATION Following the CPT site investigation, well installations and each ground water monitoring event, a report will be prepared presenting the findings. Each report will include a description of work performed,results of the soil/groundwater sampling and analysis,conclusions and recommendations The report will be in a format acceptable to RWQCB guidelines, 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 soil and ground water sampling, well installation, well development, are described below. 4.1. MONITORING WELL INSTALLATION Installation of two additional monitoring wells will follow the procedures approved in the AGE- prepared Site Investigation Work Plan,dated 05 February 1996. This plan was approved by the EHD by letter dated 17 May 1996 and amended by letter dated 01 August 1997. 4.2. CPT SOIL BORINGS Each CPT soil boring will be advanced to a depth of 100 feet bsg utilizing a 25-ton truck-mounted CPT drill rig equipped with a hydraulic ram and 2-inch diameter hollow-stem rods to advance soil borings. The initial soil boring at each location will be a cone penetrometer, advanced to the desired depth. Soil parameters such as cone bearing, sleeve friction, friction ration and pore water pressure will be measured as the cone penetrometer is advanced. Rinseate generated as part of the drilling activities 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 at 'a later date based on laboratory results of rinseate samples. A second soil boring will be located no more than three feet from the first CPT boring for soil and ground water sample collection. Based on CPT findings, discrete soil samples will be collected at various depths between 70 and 100 feet bsg based on significant lithologic variation. Soil samples will be collected utilizing a 2-inch diameter piston soil sampling assembly loaded with pre-cleaned brass sleeves. Upon soil sample retrieval, a brass sleeve will be removed from the sampler. The ends of the brass sleeve will be immediately covered with Teflon or aluminum sheets, sealed with plastic Advanced GeoEnvironmental,Inc.