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' 07 May 2004 <br /> AGE-NC Project No 98-0534 <br />' Page 4 of 14 Y <br />' 0 13 October 1999 - the stockpiled soil from the UST removal and over-excavation was _ <br /> transported to Forward Landfill for final disposal <br /> • 02 and 03 November 1999-a total of 10 soil probe borings(P 1 through P 10)were advanced <br />' at the site,under observation by EHD Probe borings were advanced in the area of the former r , <br /> USTs, over the former dispenser island locations and northwest of the former dispensers to <br /> collect grab water samples Probe boring P3 was advanced to a depth of 15 feet below <br /> surface grade Probe borings P1, P2, P4,P5,P7, and P8 were advanced to a depth of 25 feet <br /> below surface grade(bsg),borings P6,P9, and P10 were advanced to 30 feet bsg, Locations <br />' of the soil probe bon s are Illustrated on Figure 2 Boring logs for P1 through P 1 d are <br /> included in Appendix Discrete soil samples were collected at 5-foot intervals,beginning, <br /> at 5 feet bsg, to total depth of each boring <br />' TPH-g was detected at concentrations as great as 3 8 mg/kg in soil sample P9-15' TPH-g <br /> was not detected in soil samples collected at 30 feet bsg TPH-d was detected in soil samples <br /> at 15 feet bsg with a maximum concentration of 360 mg/kg(P9-15') TPH-d was not detected <br /> in soil samples collected from depths greater than 15 feet bsg I <br /> . BTEX was only detected in two of the soil samples analyzed Soil sample P9-15 contained <br />' toluene at concentrations of 0 02 mg/kg, ethylbenzene at concentrations of 0 011 mg/kg and <br /> xylenes at concentrations of 0 034 mg/kg Soil sample P3-10 contained toluene at <br />' concentrations of 0 077 mg/kg and ethylbenzene at 0 01 mg/kg The greatest concentrations <br /> of BTEX compounds detected were generally in soil samples collected near the former UST <br /> area at a depth of 1. �Yeet bsg, BTEX compounds were not detected in the former dispenser <br /> Iareas Benzene was not detected in any of the 26 soil samples analyzed <br /> MTBE was detected by EPA Method 8020 in soil from the former UST area at feet bsg <br />' with a maximum concentration of 0 24 mg/kg (P5-10) <br /> TBA was detected by EPA Method 8260 In two soil samples Soil west of the former UST <br />' area at a depth of 10 feet bsg contained the greatest concentration of TBA at 210 mg/kg(P5- <br /> 10) <br />' A total of ten `grab' water samples were collected on the site Each sample was analyzed for <br /> TPH-g, TPH-d and BTEX, with analysis for MTBE;and each sample was analyzed for the <br /> suite of five fuel additives TPH-g was detected in"seven of the ten `grab' ground water <br /> samples collected from the site at concentrations ranging from 74 }rg/l (P1) to 11,000 µg/1 <br /> (P3) TPH-d was detected in all of the grab ground water samples analyzed at concentrations <br /> ranging from 450 µg/1 to 4,'µg/1 <br /> Benzene was detected in two of the water samples analyzed at concentrations as high as <br /> 3' 1 µg/1 in sample Pr-water Toluene was detected in �q n of the water samples analyzed <br /> Advanced GeoEnviron mental,Inc <br /> r <br />