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�J <br /> i <br /> soil samples from the waste oil tank area were needed to prove to San <br /> Joaquin County that the waste oil tank had not leaked. Since the waste oil tarn <br /> had Won removed and the excavation backfilled, a new excavation was dug in <br /> order to take certified soil samples. This irit±al excavation was six feet long by <br /> three feet wide and was eight feet deep: the depth was measured from <br /> original surface le the <br /> IMI to i �� <br /> nsu <br /> _ thatrombelow tha - <br /> A sample was taken from the sidewall near he bottom Of the xcavatio land <br /> laboralaiy analysis showed the sample to be contaminated <br /> The waste 0I1 lank area was then excavated to a larger extent In are attempt to <br /> remove tha contaminaled soil This new excavation was sigh! feet long by eight <br /> feet wide and was at a depth of nine to nine and a half feet deep below the <br /> original surface level (approximately seven feel balow existing surface level). <br /> Four soil samples were taken, one from each sidewall, from a depth as near the <br /> bottom as possible. These soil samples were take ander the supervision of a <br /> San Joaquin County inspector from the Office of EnAronmental Health. All of <br /> these samples showed non-delectable contamination levels from anatvsis by <br /> Eureka Laboratory. This excavation was back-filled Will clean pea gravel, and . <br /> J the spoiled soil removal was marl fes led to an authonze,d dump. j <br /> f <br /> I <br /> } <br /> i <br />