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1 <br /> chloride (PVC) well screen. A new disposable polyethylene bailer was used for <br /> ground water sampling. <br /> • Polyethylene bailers were discarded after each sample suite was collected from the <br /> ' boring. <br /> • New nylon rope was used to lower the bailers into the wells. <br /> ' • Groundwater samples were placed into laboratory-supplied containers containing <br /> preservatives. <br /> ' • Water removed from the well was contained in 208-liter(55-gallon)United Nations <br /> approved drums. Labels were placed on the drums with the contents, date, well <br /> number, and job number recorded on the label. <br /> ' Sample Retention and Analysis <br /> ' • Chain of custody procedures, were used to document sample handling and <br /> transport from collection to delivery to the laboratory for analysis. <br /> ' • The samples were placed on ice in insulated chests overnight in the custody of an <br /> IT employee. The samples were picked up within approximately 48 hours of <br /> collection by a courier supplied by the laboratory, or were delivered to the <br /> ' laboratory by IT personnel within approximately 48 hours of collection. The <br /> samples were transported to the laboratory in a motor vehicle. <br /> ' • Soil samples were labeled with the site location, boring number, and the sample <br /> collection depth. For example, "SR 120-SBI-4' " represents the first boring (1) <br /> collected at a depth of 4 feet below the ground surface. <br /> • Groundwater samples were labeled with the boring number. <br /> ' • Laboratory quality assurance/quality control procedures are summarized below: <br /> — Method Blank Frequency=one per 10 samples <br /> ' — Matrix Spike/Matrix Spike Duplicate = one per 10 samples <br /> — Laboratory Control Sample/Laboratory Control Sample Duplicate= one per <br /> 10 samples <br /> 1 <br /> ' Sa DPAVnn J lJ rqr tMM34760,rp SR120__Sidor <br /> 711"2 <br />