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go Pg <br /> were <br /> small <br /> re <br /> loose and unconsolidated- <br /> andhellenses <br /> the sands containedabundantheavy <br /> consisting of sandy clay, was observed, which 35 <br /> minerals and mica. No distinct bedding <br /> typical of alluvial flood plain deposits. Thereand no free was ,ocalorenor <br /> Of discoloration or contamination,operation. The soil was very <br /> odor was detected during the aP on exposure <br /> slightly damp during excavation, but quickly dried up P <br /> to air. (,n irregular lense of grayish--white arkosic sand was <br /> encountered near the bottom of the excavation, which contained <br /> 9 <br /> vlearolared mica. It had no odor, and (fried <br /> abundant <br /> immediately after removal. <br /> Excavation continued under the direction ❑f Wm. Hunter, <br /> Gregory Lyons, EHS, from the San <br /> registered geologist, and <br /> registered <br /> d Environmental Health Division. The hole was <br /> Joaquinely 22" long X 12' wide X 13" <br /> deepened and widened to approximat <br /> a total of; ) about 102 cubic yards of <br /> deep (Plate XsNo water <br /> oil was <br /> removed, and stored an plastic as indiscolorationav. <br /> was observed. <br /> was encounterede and no odor or soil samples were taken from <br /> Under the direction of Mr. Lyons, Plate X. In <br /> the andom of he ole ved sail; <br /> addition, 3 p and two from the current work. <br /> One from the pr eviaus excavation, and <br /> All samples were properly sealed, labeled and sproperonchain of <br /> transported to Canonie Environmental under proper <br /> custody, (refer to Exhibit D) one <br /> covered with Plastic as shown PlateremoVed soil was stared on and <br /> Laboratory analyses were performed on August 9 & 10, and showed <br /> that levels of tested substances in samples from the excavation <br /> imits; (refer to Table II. ) The three <br /> were below detection l <br /> soil indicated <br /> samples from the stared "low levels (Table1 <br /> were below detection limits; III-) <br /> other tested substances <br /> SUMMARY: <br /> analysis from the tank-pull samples measured <br /> 1. leve and Total Volatile Hydrocarbons; <br /> Laboratory <br /> detectable amounts of Xy <br /> (Table I.) <br /> 2„ Laboratory analysis of samples taken after re-excavation <br /> showed that all measured substances were below detection limits; <br /> (Table II. ) <br /> 3. Laboratory analysis of the removed spoil showed that Toluene <br /> was present in very minor amounts; no <br /> other substances were <br /> noted. (Table ill) <br /> CONCLUSION: and <br /> based..... upon the results of the geological investigation, <br /> _.___..._ --..._. _ ......_ ._....—.. analyses,--.all. contamination has been _.._..--- -- ---- <br /> _ . <br /> supported by <br /> tEie.laboratory <br /> _._. ---. <br /> 3 <br />