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Site Background Information - Fernando's Place AGE-NC Project No. 00-0769 Page 2 of 7 On 28 April 1998, soil boring PB1 was advanced near UST 1 and UST 2 to a depth of 30 feet below surface grade (bsg) for the collection of soil samples. Analyzed samples contained concentrations of total petroleum quantified as gasoline (TPH-g) as high as 14,100 milligrams per kilogram (mg/kg). Additionally, samples were collected from the soil boring for ground water monitoring well MW-1, installed on 28 April 1998. Analyzed samples from MW-1 contained high concentrations of TPH-g and benzene, toluene, ethylbeneze, and total xylenes (BTEX) to a depth of approximately 50 feet bsg. Four additional ground water monitoring wells were installed by FE between 08 and 12 March 1999. Analyzed soil samples collected from monitoring well soil borings contained detectable concentrations of TPH-g to depths as great as 105 feet bsg, and BTEX compounds to depths as great as 120 feet bsg. Between 14 and 21 August 2001, Advanced GeoEnvironmental Inc. (AGE) advanced six Cone Penetrometer Testing (CPT)borings on-and off-site to depths between 122 and 175 feet bsg. Based on data collected from the CPT borings, AGE identified four potential hydrogeologic units (First Water Zone, Second Water Zone, Third Water Zone, and Fourth Water Zone). Significant concentrations of TPH-g, BTEX, and 1,2-DCA compounds were detected in grab ground water samples collected from each of the hydrogeologic units. ADDITIONAL ON-SITE ASSESSMENT -VERTICAL On 07 through 09 June 2006, two soil borings, CPT-07 and CPT-08, were advanced on- site utilizing CPTtechnologyto characterize the geological and hydro-geological framework and to achieve vertical definition of the petroleum hydrocarbon impacted soil and ground water. Soil boring CPT-08 to a maximum depth of 191 feet below surface grade; collection of soil samples from CPT-1 at selected depths and CPT soil boring CPT-07 to a maximum depth of 236 feet below surface grade; collection of grab ground water samples at selected depths. TPH-g was detected rom CPT-08-185 feet bsg only, at a concentration of 27 mg/kg. BTEX compounds were detected from CPT-08-185 feet bsg only, at concentrations of 0.47 mg/kg benzene, 12 mg/kg toluene, 1.6 mg/kg ethylbenzene and 10.2 mg/kg total xylene. TAME and 1,2-DCA were detected in CPT-08-185 feet bsg only,at concentrations of 0.029 mg/kg and 0.026 mg/kg, respectively. TPH-g was detected from both of the grab water samples at concentrations of 88,000 pg/I in CPT-07-181 feet bsg and 110,000 pg/I in CPT-07-231 feet bsg. BTEX compounds were detected from both of the grab water samples at concentrations of 960 pg/I and 2,900 pg/I benzene (at 181 feet bsg and 231 feet bsg , respectively); 950 pg/I and 9,600 pg/I toluene (at 181 feet bsg and 231 feet bsg, respectively); 850 pg/I and 1,200 pg/I ethylbenzene (at Advanced GeoEnvironmental,Inc.