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• Water removed from the well was contained in 55-gallon United Nations approved <br /> drums Labels were placed on the drums with the contents, date, well number, and <br /> job number recorded on the label The drums was stored at the site pending <br /> laboratory analysis of the groundwater <br /> Sample Retention and Analysis Procedures <br />' • Chain of custody procedures, including the use of chain of custody forms, were <br /> used to document sample handling and transport from collection to delivery to the <br /> laboratory for analysis <br /> • The samples were placed on ice in an insulated chests overnight in the custody of <br /> an Shaw E & I employee The samples were picked up within approximately <br /> 48 hours of collection by a courier supplied by the laboratory, or were delivered to <br /> the laboratory by Shaw E & I personnel within approximately 48 hours of <br /> collection The samples were transported to the laboratory in a motor vehicle <br /> • Soil samples were labeled with the boring number, and the sample collection depth <br /> For example, "MW4-10" represents monitoring well 4 collected at a depth of <br /> 10 feet below the ground surface <br /> • Laboratory quality assurance/quality control procedures are summarized below <br /> — Method Blank Frequency = one per 2 samples <br /> Matrix Spike/Matrix Spike Duplicate = one per 2 samples <br /> — Laboratory Control Sample/Laboratory Control Sample Duplicate = one per <br /> 2 samples <br /> r <br /> r <br /> M <br /> N lrancfpl\Projects\Projects18801040\la101101Assessment and Interim Remedial Report doc <br />' B-4 <br />