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The soil samples were collected using three (3) six-inch long brass sleeves installed <br /> inside a split-spoon sampler Upon collection, the bottom sample sleeve was <br /> immediately capped, sealed, labeled in accordance with EPA protocols, recorded on a <br /> chain of custody form, and stored in an iced cooler maintained at four degrees <br /> centigrade (4°C) or less, pending analysis by a California State certified laboratory <br /> The middle and top sample sleeves were used for lithologic description and for field <br /> screening <br /> s <br /> 53 Field Screening of Soil Samples <br /> The soil contained in the sampler shoe and middle brass sleeve was placed in a glass <br /> "mason" far to approximately 50 percent capacity, capped, shaken, and stored for a <br /> period of 15 minutes The top of the cap was then pierced, and analyzed with a <br /> Foxboro Model 128 OVA/GC Flame-ionizing detector (FID) A standard headspace <br /> reading was collected at this time and recorded on the boring logs <br /> The soil sampling and field screening procedures described above were conducted in <br /> accordance with accepted standards of care prevalent at this time and were performed <br /> to ensure the acquisition of accurate data The field screening results, summarized in <br /> Table 2, were used in the selection of soil samples for laboratory analysis and in field <br /> determinations for the placement of testhole boring locations The soil samples to be <br /> submitted for laboratory analysis and test hole boring locations were discussed with <br /> the San Joaquin County Health representative prior to sample submittal. <br /> i <br /> • 8 of 17 <br />