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08 September 2009 <br />AGE -NC Project No. 03-1055 <br />Page 15 of 19 <br />(Appendix K). <br />Additionally, AGE conducted a search of the CVRWQCB Geotracker web site to review ground <br />water monitoring wells within 2,000 feet of the site: <br />• Three ground water monitoring wells associated with the Pacific Bell site (70607799502; <br />closed LUST site) located at 10 East 12'h Street; <br />• Nine groundwater monitoring wells associated with the Beacon (Conoco / Kayo I Fast Gas) <br />site (T0607700028; open LUST site) located at 153 East I I" Street; and <br />Seven ground water monitoring wells associated with the Tracy High School site <br />(T0607773226; open LUST site) located at 315 11" Street. <br />6.0. CORRECTIVE ACTION (SOIL EXCAVATIONS) <br />Octnher 2000 <br />Hydrocarbon -impacted soil was removed with an excavator outfitted with a 2.45 cubic -yard bucket. <br />Soil was excavated from the northern most dispenser near soil probe boring B3. Soil was stockpiled <br />immediately on the eastern edge of the site. Excavated soil was field screened for the presence of <br />volatile organic compounds using an OVM. Ground water was present within the limits excavation <br />at a depth of 15 feet bsg. Saturated soil was excavated from below the water table and stockpiled on <br />site within a soil containment berm. The extent of the soil excavation and sampling locations are <br />depicted in Figure 2. <br />The excavation was backfilled and compacted with approximately 60 cubic yards of pea gravel to <br />the upper portion of the water table and clean fill sand was then roll compacted with a sheep's foot <br />wheel into the excavation to the surface grade. On 09 November 2000, approximately 236.5 metric <br />tons of excavated soil was transported from the site and disposed at Forward Landfill in Manteca, <br />California. <br />A total of five excavation and two stockpile composite soil samples were analyzed. The highest <br />concentration of TPH-g were reported in soil near the north wall of the excavation (sample NW -13'). <br />Low concentrations of TPH-g were also reported in the soil sample collected from the south wall of <br />the excavation. TPH-g were reported in the composite stockpile soil samples at concentrations of <br />200 mg/kg and 260 mg/kg. BTEX compounds were reported at concentrations as high as 4.0 mg/kg <br />from the excavation wall samples and in the stockpiled soil from the excavation as high as <br />0.31 mg/kg. <br />Advanced GeoEnvironmental, Inc. <br />