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08 September 2009 AGE -NC Project No. 03-1055 Page 3of19 excavation at a depth of 15 feet bsg. November 2000 - Five soil borings were advanced at the site for the collection of soil samples and installation of five ground water monitoring wells (MW -1 through MW -5) to a total depth of 15 feet bsg; procedures and results of the investigation are presented in the AGE -prepared Interim Soil Excavation and Quarterly Report - Fourth Quarter 2000, dated 29 January 2001. A total of seven soil samples were analyzed for petroleum hydrocarbon constituents. TPH-g were reported in soil samples MW2-10, MW2-15, MW3-10, and MW3-15 at concentrations as high as 2,300 mg/kg. BTEX were reported in soil samples MW2-10, MW2-15, and MW3-10 at concentrations as high as 6.8 mg/kg benzene in MW2-15, 0.057 mg/kg toluene in MW3-10, 19 mg/kg ethylbenzene in MW2-15, and 35 mg/kg benzene in MW2-15. No additional constituents of concern were reported in the soil samples analyzed. July 2003 - Four soil probe borings (B6 through B9) were advanced in the western boundary of the property on Adams Street; procedures and results of the investigation are presented in the AGE -prepared Quarterly Report - Second Quarter 2003, dated 18 August 2003. Probe borings were advanced to a total depth of 17 feet bsg. Soil samples were collected continuously from the borings at 4 -foot intervals, beginning at 2 feet bsg in boring B6 and 5 feet bsg in borings B7, B8, and B9. A grab ground water sample was collected at the water table. TPH-g were reported in all soil samples at concentrations ranging from 17 mg/kg in sample B8-13 to 72 mg/kg in sample B7-13. BTEX compounds ethylbenzene and xylenes were reported in all samples at maximum concentrations of 0.57 mg/kg (B9-10) and 0.1 mg/kg (86-12), respectively_ Benzene and toluene were reported in sample B8-13 at concentrations of 0.02 mg/kg and 0.01 mg/kg, respectively. Benzene was reported in soil boring water samples B8 and B9 at 8.4 µg/1 and 80 µg11, respectively; toluene was reported in samples B6 and B9 at 10 µg/1 and 16 µg/1, respectively; ethylbenzene and xylenes were reported in all soil boring water samples at maximum concentrations of 3,100 µg/1 and 1,800 µg/1 (B6), respectively. Fuel additive MTBE was reported in three of the four soil boring ground water samples at concentrations of 28 µg/1 (B6 and B9) and 8.7 µg11 (B8). Dissolved lead was not reported at or above laboratory reporting limits in the any of the ground water samples. • September 2003 - Monitoring wells MW -1, MW -3 and MW -4 were destroyed as part of over -excavation activities to remove hydrocarbon -impacted soil related to an unauthorized release of petroleum hydrocarbons from former USTs at the site; well destructions are documented in the AGE -prepared Excavation and Sampling Report, dated 30 January 2004. • October 2003 - Hydrocarbon -impacted soil north of the October 2000 excavation area was removed with an excavator and 2.45 cubic -yard bucket and stockpiled on the eastern edge Advanced GeoEnvironmental, Inc.