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e <br /> 11 November 2004 <br /> AGE-NC Project No 02-0962 <br /> Page 3 of 14 ti <br /> 'detected within the diesel-range spectrum,indicating that the TPH-g may actually be degraded diesel <br />' fuel,MTBE was detected In ground water samples collected from boring B5 at a concentration of <br /> 15 lig/1 No other target analytes were detected at or above laboratory detection limits in any other <br /> ' of the samples analyzed Analytical results of soil samples are presented in Table`l Analytical <br /> results of ground water samples are presented In Table 2 <br /> _ h <br /> 3.0. PROCEDURES <br />' On 26 and 27 July and 05 August 2004,three pilot soil borings and one cone penetration test(CPT) i <br /> boring(CPT-1)paired with a hydropunch boring were advanced at the site to collect soil and ground <br /> water samples The pilot borings were completed as ground water monitoring wells(MW-1 through <br />' MW-3) and later developed for maximum ground water production Ground water monitoring <br /> procedures were performed as outlined in the AGE-prepared Site Assessment Work Plan, dated <br /> '30 May 2004 <br />' Field work was performed in accordance with guidelines issued by the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) for the investigation of underground storage tanks <br />�. (UST) sites <br /> 3 1 PILOT BORING ADVANCEMENT AND WELL COMPLETION <br /> On 26 and 27 July 2004,`three pilot soil borings were advanced at the site (MW 1 through MW3) <br /> The'soil borings were advanced using a CME-75HT drill rig, equipped with 8 25-inch diameter - <br /> hollow-stem augers to advance the monitoring well pilot borings The dnlll ng and three-man crew <br />' were supplied by Mitchell Drilling Environmental Auger returns generated by drilling were <br /> containerized in properly labeled Department of Transportation (DOT)-approved model 17H <br /> 55-gallon drums and stored on-site <br /> r <br /> 3 1 1 Soil Sampling <br /> Soil samples were collected ahead of the dell bit using a California modified split-"spoon sampler <br /> loaded with three pre-cleaned 2-inch by 6-inch brass sleeves The samples were collected from each <br />' monitoring well'pilot boring at five-foot intervals, beginning at 5 feet below surface grade (bsg), <br /> using a 140-pound hammer to advance the sampler The number of blows required to advance the <br /> sampler over each 6-inch increment of the'18-inch sampling interval was recorded on the boring <br />' logs Sampling equipment was washed in an Alconox solution and rinsed with water prior to each <br /> sampling run to minimize cross-contamination JI <br /> Advanced GeoEnvjronmental,Inc <br /> t r <br />