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Chevron U.S.A. <br /> 1 Page 5 <br /> �4. <br /> I 5.0 REMEDIAL ACTION <br /> ,., Site activities associated with the soil remediation <br /> process commenced on January 22, 1990. Excavation and <br /> backfill (with clean materials) continued through March 19, <br /> 1990. Aeration of contaminated soil is ongoing. All <br /> r.. <br /> excavated soil was segregated, based on field screening, into <br /> "clean" and "dirty" stockpiles. <br /> 5.1 Excavation <br /> The excavation process started in the vicinity of <br /> Dispenser Island No. 1 (DI--1) . Plate 2 presents the Site <br /> Plan. The excavation associated with DI-1 was about 30 feet <br /> long b 21 feet wide and 21 feet dee <br /> 9 y p (Photo 1) . The <br /> excavation was completed on January 23, 1990. Seven soil <br /> `. " samples were taken as specified by Mr. Harlan Knoll of San <br /> Joaquin County Health, on January 24, 1990. The sample <br /> F <br /> locations are illustrated on Plate 3. Results of analyses on <br /> = f the samples are summarized in Table I-A. <br /> �. . 16000--250-044 <br /> .r Corrected <br />