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r28 June 2007 AGE-NC Project No. 06-1481 Page 2 of 5 alluvium, lake, playa and terrace deposits of Quaternary age (California Division of Mines and Geology, 1977).Rocks composing the basement complex of the Province have not been completely defined but are believed to be metamorphic and igneous in origin. The Modesto, Riverbank and Turlock Lake Formations and overlying Recent alluvium are the principal sources of domestic ground water in the 13,500-square mile San Joaquin Valley Ground Water Basin(Basin 5-22). Based on a Fourth Quarter 2006 monitoring event at a property less than an eighth of a mile to the south-southwest from the site, Top Filling, 101 Wilson Way, Stockton, California, depths to ground water ranged from 37.98 and 40.60 feet below the top of the casing (btoc). The shallow and deep ground water was inferred to flow generally toward the northeast. However,this may be greatly modified by local recharge and discharge patterns. 2.2. UNDERGROUND STORAGE TANK REMOVAL A 22,000-gallon fuel oil tank(Fuel Oil#6)located approximately 35 feet from the northeast corner of the western-most building on Parcel 153-040-03 was filled in-place in 1986.A 1,000-gallon UST was removed from the southeast corner of the western building on Parcel 03 in 1986; soil contamination was found to be immediately below the tank and soil was over-excavated in the area of the tank. Confirmation sampling noted non-detect for all analytes and the site was closed by San Joaquin County Environmental Health in 1996. 2.3. PREVIOUS SITE ASSESSMENTS An AGE-prepared Phase I Preliminary Findings,dated 03 November 2006,identified:former above ground and underground storage tank areas, a former hydraulic scale location, a former oil depot, and former in-ground separators. 3.0. SCOPE OF WORK AGE proposes to advance a series of soil borings in order to collect grab ground water and/or soil samples. The phase II site assessment will include the following tasks: • Permitting and pre-field work activities; • Grab ground water and/or soil sample collection and analysis; • Report preparation Advanced GeoEnvironmentel,Inc.