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Site Background Information: Larry's Auto AGE-NC Project No. 95-0184 Page 3 of 8 CPT-2 exceeded the DHS's Maximum Contaminant Levels (MCLS) for BTEX in ground water; however, benzene was the only BTEX compounds exceeding the MCL in water samples collected from CPT-3. VOCs were detected at all depths in the CPT borings. 1,2-DCA was present at concentrations exceeding the MCL. In addition, naphthalene, n- propyl benzene, 1,2,4-trimethylbenzene, and 1,3,5-tri methyl benzene concentrations exceeded their respective action levels, and n-propyl benzene exceeded its action level. On 13, 14, and 16 through 18 December 2004 and 13 January 2005, six soil borings(CPT- 1 and CPT-5 through CPT-9)were advanced on-and off-site utilizing CPT technology. At each boring location, lithologic data was collected from an initial CPT sounding; immediately adjacent to the sounding, twin borings were advanced to collect soil and grab ground water samples from selected depths. Although the proposed total depth of each boring was to be 225 feet bsg, all borings encountered refusal before reaching the targeted depth. • Soil boring CPT-1 was advanced to a total depth of 198 feet at the north end of the Larry's Auto parking lot, approximately 8 feet east of UST #1; • Soil boring CPT-5 was advanced to a total depth of 115 feet on the west side of the Aurora Street right-of-way, approximately 95 feet north of the corner of Aurora Street and Miner Avenue; • Soil boring CPT-6 was advanced to a total depth of 192 feet on the north side of the Miner Avenue right-of-way, approximately 38 feet west of the corner of Aurora Street and Miner Avenue; • Soil boring CPT-7 was advanced to a total depth of 192 feet at the south end of the Larry's Auto parking lot, approximately 14 feet west of monitoring well MW-7; • Soil boring CPT-8 was advanced to a total depth of 191 feet on the west side of the Grant Street right-of-way, approximately 40 feet west of monitoring well MW-3; and • Soil boring CPT-9 was advanced to a total depth of 192 feet near the south side of Lindsay Avenue, approximately 37 feet east of the corner of Lindsay Avenue and Grant Street. Ground waterand soil samples were collected from specified depth intervals(zones)based on CPT lithologic data acquired from the initial CPT sounding indicating favorable conditions for sampling. Ground water samples were collected by pushing the HydroPunch sampling assembly to specified zones. Ground water samples were collected from the CPT boring locations at the following intervals: • CPT-1 was sampled between 62 feet and 66 feet below surface grade (bsg), Advanced GeoEnvironmental,Inc