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& A, -sem r-.IN i } <br /> ILM _r 1 <br /> A We <br /> in k INIUM NO <br /> Ga <br /> _. Charon USA. <br /> Page 11 <br /> The results of those analyses showed that a portion of the samples were not — <br /> thnroughly aerated. It was concluded that the tilling operation should continue for <br /> approximately 5 day,for each lift of hydrocarbon-contaminated soil. This sequence <br /> commenced on Au q <br /> gu.s*.28, 1990. On August 29, 1990,California Petroleum Inc.,the <br /> contractor performing the earthwork,requested that each of the stockpiles storin <br /> bydrocarbon-contaminated soils be spread in one thick Lift around'he excavat�on <br /> g the <br /> the center of the site. It was feit the"tilling activity could be more efficient ifnear <br /> the soils were placed around the excavation, eliminating U-turns and wasted mo <br /> the tilling process. The San Joaquin County <br /> Health Department approved thisprocess.rs <br /> The top and middle photos found on Plate 2,show the mounded co Process. <br /> and after all stockpiled soils had been spread, contaminated soils before <br /> l <br /> On August 29, 1990, a dust-complaint was received by the San Joaquin C <br /> 1 q County <br /> Health Department from neighboringres <br /> Petroleum Construction idences. From this point forward, California <br /> Company made an additional effort to minimize d <br /> operations Burin ust by ceasing <br /> g portions of the day when wind was a factor and by placing the <br /> stock-pile of cleansed soil at a location to help block the movement of dust between <br /> i <br /> the subject site and neighboring residences. <br /> ` ` <br /> T 3 <br /> 5 <br /> i <br /> ' ieoaa-iso-occ � <br /> d � <br /> DA%I L� <br /> _ <br /> ' e <br /> i <br /> t <br /> C. <br />