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• 29 October 1992 (GeoAudit CV45-49C5-1. 10) Page 2 of 3 The other monitoring well w:'.11 be installed approximately 100 feet east of the existing well on the Cutter Lumber property (both properties are owned by the Bank of Stockton) . The approximate locations of the monitoring wells are shown in Figure 2 - Site Plan. Details of the drilling and sampling procedures are as follows: 1) Notify the San Joaquin County Environmental Health Division (SJEHD) 48 hours prior to work initiation. 2) Drill two monitoring wells to a depth of 50 - 55 feet using a truck-mounted, continuous-flight, 8-inch diameter hollow-stem augers using the well design depicted in Figure 3 . 3) Log auger returns in accordance with the Unified Soil Classification System. . 4) Obtain soil samples at five foot intervals using a split-tube sampler loaded with three pre--cleaned brass tubes. 5) Monitor auger returns and soil sample duplicates for the presence of volatile organics using a photo-ionization detector (PTD) . 6) Preserve soil sample in the middle brass tube by covering both ends with aluminum foil, capping, and sealing with tape. 7) Label and log soil samples on a chain-of-custody form. 8) Decontaminate sampling equipment in a tri-sodium phosphate solution (TSP) and rinse twice with water prior to each sampling run. 9) Steam-clean auger flights after drilling. 10) Contain soil cuttings in 55-gallon DOT drums and store on-site pending analytical results. 11) No sooner than 48 hours after installation, measure to the nearest 0. 01 foot, the static water level in the wells, 12) Using a bailer, surge and purge the wells. Obtain two water • samples from the well after temperature, pH, and conductivity have stabilized. 13) Contain purged water in 55 gallon DOT drums and store on-site pending analytical results.