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MWX§1�'#01211!11 pg <br /> i <br /> Chevron U.S-A. <br /> t Page 11 <br /> s <br /> i <br /> �A The results of those analyses showed that a portion of the samples were not <br /> thoroughly aerated. It was concluded that the tailing operation should continue for <br /> approximately 5 days for each lift of hydrocarbon-contaminated soil. This sequence <br /> commenced on August 28, 1990. On August 29, 1990, California Petroleum Inc.,the <br /> q contractor performing the earthwork,requested that each of the stockpiles storing the <br /> ;.„ hydrocarbon-contaminated soils bespread in one this:-lift around the excavation near <br /> the center of the site. It was felt the tilling activity could be more efficient if <br /> tv 7. <br /> the soils were placed around the excavation,eliminating U-turns and wasted motion in <br /> i., <br /> the tilling process. The San Joaquin County Health Department approved this process. <br /> The top and middle photos found on Plate 2,show the mounded contaminated soils before <br /> and after all stockpiled soils had been spread. <br /> On August 29, 1990,a dust complaint was received by the San Joaquin County <br /> Health Department from neighboring residences. From this point forward,California <br /> l� <br /> Petroleum Construction Company made an additional effort to minimize dust by ceasing <br /> operations during portions of the day when wind was a factor and by placing the <br /> 6" stockpile of cleansed soil at a location to help block the movement of dust between <br /> the subject site and neighboring residences. <br /> r a <br /> 16000-250-044 - <br /> DnaiE_5 ti Nloom: <br />