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08 September 2009 AGE -NC Project No. 03-1055 Page 4 of 19 of the site; procedures and results of the soil excavations are presented in the AGE -prepared Excavation and Sampling Report, dated 30 January 2004. Excavated soil was field screened for the presence of volatile organic compounds using an OVM. Ground water was present within the limits of the excavation at a depth of 13 feet bsg. Monitoring well MW -2 was destroyed during excavation activities. On 21 October 2003, the excavation was halted due to the discovery of one 500 -gallon UST. November 2003 - One 500 -gallon UST was removed under the supervision of the EHD; the UST removal is documented in the AGE -prepared Excavation and Sampling Report, dated 30 January 2004. Excavation activities resumed on 10 November 2003 and continued until 12 November 2003. At this time, the excavation was backfilled with clean fill material. Saturated soil was excavated from below the water table and stockpiled on-site within a soil containment berm. Soil was placed on plastic sheets for temporary storage. • July 2004 - Two soil borings were advanced at the site for the collection of soil samples and installation of two ground water monitoring wells (MW -6 and MW -7) to total depths of 20 feet bsg; procedures and results of the well installations are presented in the AGE -prepared Monitoring Well Installation and Quarterly Monitoring Report, dated 14 October 2004. A total of five soil samples were analyzed for petroleum hydrocarbon constituents. TPH-g and TPH-d were reported in one soil sample collected from boring MW6 at concentrations of 3.5 mg/kg and 37 mg/kg, respectively. June 2005 - Three soil borings were advanced at the site for the collection of soil samples and installation of three ground water monitoring wells (MW -8 through MW -10) to total depths of 20 feet bsg; procedures and results of the well installations are presented in the AGE -prepared Monitoring Well Installation and Quarterly Monitoring Report, dated 12 December 2005. A total of six soil samples were analyzed for petroleum hydrocarbon constituents. TPH-g were reported in soil sample MW9-15 at 20 mg/kg. No other constituents of concern were reported in any of the soil samples analyzed. September 2007 - Six off-site soil probe borings B 10 through B 15 were advanced to total depths of 25 feet bsg. Borings were located near the center of Adams Street (B 12 through B] 5) and east of the site in the city sidewalk. (B 10 and B 11); procedures and results of the investigation are presented in the AGE -prepared Additional Site Assessment Report, dated 18 October 2007. A total of six grab ground water samples and 30 soil samples from borings B-10 through B-15 were collected and analyzed. TPH-g were reported in grab ground water samples at a maximum concentrations of 9,700 µg/l (B 15-W). BTEX compounds and MTBE were reported in ground water samples at a maximum concentration of 16 µg/1 benzene, 9.4 µg/1 toluene, 37 µg/1 ethyl -benzene, and 59 µg/1 total xylenes, and 27 µg/l MTBE, all in sample B11 -W. TPH-g, ethylbenzene, and total xylenes were reported in soil samples B 11-10 at maximum Advanced GeoEnvironmental, Inc.