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�• Site Background Information: Sarale Farms Page 2of5 LW The UAR was issued after laboratory analysis of soil samples collected during the UST and piping removal detected the volatile aromatic compounds benzene, toluene, ethylbenzene, and total xylenes r. (BTEX) at concentrations as high as 0.026 milligrams per kilogram (mg/kg), 0.007 mg/kg, 0.009 mg/kg, and 0.01 mg/kg, respectively. Total petroleum hydrocarbons quantified as gasoline (TPH-g) and BTEX were detected at concentrations as high as 8.3 mg/kg and 15.9 mg/kg W (ethylbenzene), respectively, in soil samples collected from below the product piping (approximately 4 feet below surface grade {bsg)).Analytical results of the UST removal soil samples are provided in Table I of this appendix. SITE ASSESSMENT ACTIVITIES On 02 May 2002, three soil probe borings (P1, P2, and P3)were advanced at the site as part of the assessment related to the former UST removal. Based upon data collected on 02 May 2002, AGE concluded the following: `Ma Generally, dark gray to black, moist to saturated silty organic clay and organic clay were encountered from surface grade to approximately 5 feet bsg. Dark gray, saturated silty clay, t.0 sandy silt, and silty sand were encountered at 10 feet bsg. • TPH-g and BTEX compounds were detected in the three analyzed soil samples at concentrations as high as 2,800 mg/kg(TPH-g), 24 mg/kg(benzene), 120 mg/kg(toluene), UP 51 mg/kg(ethylbenzene), and 290 mg/kg(xylenes)in sample P2-5. Fuel additives were not detected at or above laboratory reporting limits in the three analyzed soil samples. ,r0 TPH-g, BTEX compounds, and MTBE were detected in each of the grab ground water samples. The highest concentrations of target analytes were detected in the grab ground water sample collected from probe boring P2, located clear the former UST piping. La Analytical results of soil and grab ground water samples are provided in Table 2 of this appendix. On 27 May 2003, four ground water monitoring wells(MW-I through MW-4)were installed. The wells were developed on 09 June 2003 and surveyed on 24 June 2003. Well MW-3 was established L. approximately 20 feet northeast of the former UST location (Figure 2). Wells MW-1, MW-2, and MW-4 were established around the western portion of the former fuel piping, where the highest concentrations of petroleum hydrocarbons were detected in the soil. Based upon data collected on 27 May 2003, AGE concluded the following: L In general, the site stratigraphy consisted of dark gray to black, moist to saturated silty organic clay, organic clay, and clayey silt from surface grade to approximately 15 feet bsg. L.. Advanced GeoEnAronmental,Inc.