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r <br /> rEach discrete stockpile sample was collected by removing the upper 3 to 6 inches of <br /> soil, and then driving the stainless steel or brass sample tube into the stockpiled material <br /> rwith a hand, mallet, or drive sampler The sample tubes were then covered on both <br /> ends with Teflon sheeting, capped, labeled, and placed in a cooler with ice for <br /> rpreservation A chain-of-custody form was initiated in the field and accompanied the <br /> selected sod samples to the analytical laboratory <br /> r <br /> rQUALITY ASSURANCE PLAN <br /> This section describes the field and analytical procedures to be followed by ENSR <br />' throughout the investigation <br />' General Sample Collection and Handling Procedures <br /> Proper collection and handling are essential to ensure the quality of a sample Each <br /> sample is collected in a suitable container, preserved correctly for the intended analysis, <br /> rand stored prior to analysis for no longer than the maximum allowable holding time <br />' Water Sample Collection for Volatile Organic Analyses <br /> For volatile organic analyses (VOA), the water sample is decanted into each VOA vial in <br />' such a manner that there is no meniscus at the top of the vial septum isOA cap with a <br /> Teflon quickly secured to the top of the vial The vial is inverted and gently tapped to <br />' see if air bubbles are present If none are present, the vial is labeled and refrigerated <br /> according to the Soil and Water Sample Labeling and Preservation section <br />' Water Sample Labeling and Preservation <br /> Soil and pg _ <br />' Label information includes a unique sample identification number, job identification <br /> number, date, and time After labeling, water samples are placed in a Ziploe® type bag <br /> and placed in an ice chest cooled to approximately 4° Celsius Upon arriving at ENSR's <br /> office, the samples are transferrea to a iocKea refrigerator cooled to approximately 40 <br />' Celsius Chemical preservation is controlled by the required analysis and is noted on <br /> the chain of custody form <br /> Sample Identification and Chain of Custody Procedures <br /> Sample identification and chain of custody procedures document sample possession <br /> from the time of collection to ultimate disposal Each sample container submitted for <br />