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i <br /> MOHR-FRY Ranches <br /> 950 Industrial Dnve, Stockton, California June 2, 1993 <br /> Phase II Remedial Report Page: 6 <br /> All soil and ground water samples were properly labeled with date collected, <br /> prosect number, sample coordinator, and sample identification. Field records <br /> document the above information and other significant data, such as names of on- <br /> site personnel, sampling methods, date and time of sampling, the number of <br /> well volumes removed before sampling, preservatives added (if any), and any <br /> filtration performed on samples. <br /> The samples were refrigerated immediately for delivery to the laboratory and <br /> were under no circumstances opened by anyone other than laboratory personnel. <br /> Cham of Custody records were maintained at all times. <br /> 3.4 Soil Sampling <br /> All soil sampling equipment was thoroughly steam-cleaned before and between <br /> sampling to prevent cross contamination. Relatively undisturbed soil samples <br /> were taken at intervals of not more than 5 feet in order to evaluate the <br /> subsurface materials. <br /> The soil samples were taken using a California Modified Split Spoon sampler <br /> with brass liners The sampler was driven continuously by a wire line hammer. <br /> The laboratory samples did not have head space and were immediately sealed in <br /> their liners using aluminum foil lined plastic caps. The remaining samples were <br /> removed from their liners and used as an aide to the on-site geologist in logging <br /> the material at that depth. <br /> Soil samples collected for analysis were analyzed using EPA method <br /> I 3510/LUFT for diesel range petroleum hydrocarbons, EPA method 8020 for <br /> BTX&E compounds <br /> 3.5 Ground Water Sampling <br />' A travel blank provided by the laboratory accompanied the sample vials from <br /> the time they are picked up from the lab to the time they are delivered to the <br /> lab. This travel blank was listed on the Chain of Custody but was not analyzed <br /> because the samples did not contain the contaminants. <br /> All sampling equipment including the bailer and cables used by sampling <br /> personnel, was disassembled and steam-cleaned prior to commencement of <br />