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total petroleum hydrocarbons as Stoddard solvents (TPHss), benzene, toluene, ethylbenzene, and <br /> xylenes (BTEX, EPA Method 8020). The excavation was backfilled with clean crushed rock <br /> from eighteen feet to five feet bgs. The remaining five feet was backfilled.with clean Class II <br /> aggregate base material to the surface. <br /> On September 16 and 17, 1998, ATC personnel supervised the advancement of three soil borings <br /> to approximately 57 feet bgs. The borings were completed as groundwater monitoring wells to <br /> determine the extent of petroleum hydrocarbon impacted groundwater. ATC also supervised the <br /> advancement of one soil boring to approximately 70 feet bgs to evaluate the vertical extent.of <br /> petroleum hydrocarbon impacted soil. This boring was grouted to the ground surface upon <br /> completion. A field geologist was present to log all drill cuttings and soil samples. Descriptions <br /> of soil types encountered and sample collection intervals were recorded on boring/well logs. Soil <br /> samples were collected from each boring-and analyzed for TPHg, TPHd, TPHss, and BTEX. <br /> On September 18, 1998, ATC personnel developed and sampled wells MW 1, MW2, and MW3. <br /> The results of the soil excavation, soil boring advancement, well installation, and well sampling <br /> will be incorporated into the Subsurface Investigation Report. <br /> E <br />