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30 August 2007 AGE-NC Project No.07-1517 Page 3 of 7 In the fourth quarter of 1997, a work plan implemented to collected soil samples and characterize the site soils and collected soils samples from set of two locations across the northern portion of the site(BSB and BSC).The samples were collected at depths of one,two,three and four feet bsg,from trenches using a backhoe.The samples were selectively submitted to a laboratory for lead analysis (including soluble lead). Lead was detected in the samples BSB and BSC at concentrations of 44 mg/kg and 43 mg/kg;while soluble lead had detections of 1.2 mg/1 and 2.9 mg/l.Total lead was not detected at a depth of three feet bsg. 2.3. GROUND WATER DEPTH AND FLOW DIRECTION Based on the San Joaquin County Flood Control District and Water Conservation District Lines of Equal Depth of Water Wells Fall 1996 map, the estimated depth to ground water in the vicinity of the site is 60 feet below surface grade(bsg). AGE has ground water gauging data collected from east Fremont Street, within 750 feet of the site, which demonstrates the ground water depth of 50 feet bsg. The Calaveras River - Diverting Channel is the nearest surface water feature to the property,located approximately 2,000 feet southeast of the site.Water from the channel drains into the San Joaquin River and is primarily used for commercial and recreational boating, with agricultural as a secondary use. The channel contains water continually and has a potential tidal effect upon ground water depth or flow direction in the area. 3.0. SCOPE OF WORK AND PROCEDURES Based on the laboratory analysis of soil samples collected and field observations noted during excavations in 1997,the greatest concentrations of petroleum hydrocarbons and lead were detected in samples collected from the trench BSS-1 (sample A),BSB(sample B)and BSC(sample C).The extent of petroleum hydrocarbon and soluble lead impacts (requiring the directed remediation) to soil has been delineated. Impacted soils are limited to above a depth of three feet bsg, based on analytical data of soil samples collected.The Central Valley Regional Water Quality Control Board has determined their oversight was not required.AGE presumes the Board has evaluated the threat to be low to the ground water at the site. To mitigate the residual hydrocarbon sources and the soluble metals near the surface for site redevelopment; the removal of the petroleum hydrocarbon-impacted soil and lead impacted will be required. Advanced GeoEnvironmental,Inc.