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PREVIOUS SITE ASSESSMENT <br /> On 05 and 06 August 2003, four soil probe bonngs (B1, B2, B3 and B4) were advanced to a total <br /> depth of 50 feet below surface grade (bsg) utilizing a van-mounted Geoprobe 5400 direct-push <br /> probing unit equipped with 1 25-inch diameter probing rods, the probing unit advances soil probe <br /> borings using a hydraulic hammer to drive soil and ground water sampling tools to specified depths <br /> Two bonngs were advanced east and west, respectively, of the former UST excavation, the third <br /> boring was advanced north of the former UST excavation, the fourth boring was advanced east of <br /> the dispenser islands <br /> TPH-g,MTBE,and BTEX compounds were detected in soil samples analyzed from all four borings <br /> TPH-g was detected in soil samples at maximum concentrations of21,000 milligrams per kilogram <br /> (mg/kg)in boring B 1 at 35 feet bsg MTBE was detected in soil samples at maximum concentrations <br /> I of 5 6mg/kg (B4-35') BTEX compounds were detected at maximum concentrations of 27mg/kg, <br /> 600mg/kg,270mg/kg,and 1,420mg/kg of benzene,toluene,ethylbenzene,and xylenes, respectively <br /> in baring 131-35' A summary of analytical results, from all soil samples, is depicted in Tables 1 <br /> Iand <br /> I � <br /> I <br /> I <br /> IAdvanced GeoEnvironmental,Inc <br />