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t, <br /> �x r <br /> Problem Assessment Report 989 <br /> 1 <br /> December S, <br /> USA Petroleum Station No. 65, Lodi. California AGS 87050-3 <br /> i <br /> Samples selected for possible chemical analysis were sealed with aluminum foil,plastic caps, <br /> and tape. They were then labeled and placed quickly in iced storage for transport to the <br /> analytical laboratory. Chain of Custody Records were initiated in the field by the geologist <br /> and accompanied the samples to the laboratory. <br /> Soil cuttings generated during drilling of borings B-4 and B-5 were placed on plastic <br /> sheeting and stockpiled at the site. Stockpiled soil cuttings were sampled on January 19, <br /> 1989. We collected samples by scraping 18 to 24 inches of soil off the soil surface. Four <br /> samples of the stockpiled soil were collected by driving a hand-operated percussion sampler <br /> equipped with a clean brass sleeve into the stockpiled soil. Each sample sleeve was 1 <br /> removed from the sampler, promptly sealed with aluminum foil, plastic caps, and tape; <br /> f <br /> 1 P ; <br /> s labeled and placed in iced storage. The samples were transported to the laboratoryunder <br /> Y S <br /> Chain of Custody Record with the boring samples. After sampling, the stockpiled soil was <br /> covered:with plastic sheeting. "� n ft <br /> r A o a' ieCd; Caii�a,— m::,.rM aril the sbi``nff� fewfi "'�Jducth j <br /> t <br /> i <br /> j - <br /> 1. 18 <br /> APPIles' <br />