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sampler, vertically to depths of 60 feet bsg. ' Grab ground water samples were collected from each probe boring using a Geoprobe hydropunch sampling assembly. The probe rods were advanced to approximately 60 feet bsg. ' TPH-g was detected in the water samples collected from B8 and B9 at concentrations of 71 micrograms per liter (gg/1) and 88 µg/l, respectively. TPH-d was detected in the water sample collected from B9 at a concentration of 140 pg/1. Ethylbenzene and total xylenes were detected in ' the sample from B8 at concentrations of 1.2 gg/I and 1.3 �tg/l, respectively. Toluene, ethylbenzene and total xylenes were detected in the water sample collected from boring B9 at concentrations of 0.62µg/l, 0.72µg/1 and 4.3 µg/1,respectively.No other analytes were detected at or above laboratory ' reporting limits in the grab ground water samples analyzed. ' ADDITIONAL SUBSURFACE INVESTIGATIONS ' In October 2002,four 8.25-inch soil borings were advanced at the site,to be completed at monitoring wells MW-7 through MW-10. Soil samples were collected from monitoring well pilot borings at five-foot intervals, beginning at 5 feet bsg. ' Borings MW7 through MW 10 were completed as ground water monitoring wells to further assess the downgradient lateral and vertical extent of impacted soil and ground water. A total of eight soil ' samples were collected and analyzed for TPH-g, BTEX, EDB, 1,2-DCA and the suite of five fuel additives, including MTBE.No analytes were detected at or above laboratory reporting limits in the soil sample analysis. ' In March 2004, two 8.25-inch soil borings were advanced at the site,to be completed at monitoring WPI Is MW-I1 and MW-12. Soil samples were collected from monitoring well pilot borings at Ifive-foot intervals, beginning at 15 feet bsg. Borings MW I I and MW 12 were completed as ground water monitoring wells to further assess the ' downgradient lateral extent of impacted ground water. A total of four soil samples were collected and analyzed for TPH-g and BTEX.No analytes were detected at or above laboratory reporting limits in the soil sample analysis. r SITE STRATIGRAPHY A mottled ale brown - ,p wn and red brown,stiff,clayey silt/silty clay was encountered from surface grade to depths of approximately 5 feet bsg in each boring. A pale to dark gray-green,silty,medium dense, poorly sorted fine sand was generally encountered from 5 feet to 10 feet bsg. A pale brown to pale gray, stiff, silty clay was encountered from 10 feet to 20 feet bsg. A pale brown, medium dense, poorly sorted, silty fine sand was generally encountered at depths between 20 feet and 25 feet bsg. A dark brown, very stiff, silty clay was encountered at depths greater than 25 feet bsg. Advanced GeoEnviron mental,Inc.