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Appendix A:Field, Sampling,and Analytical Methods <br /> A.7: SAMPLE CUSTODY <br /> The integrity of environmental samples collected during this investigation was ensured, from collection to <br /> final dispostion,by documenting possession, in accordance with SAIC Field Technical Procedure No. <br /> FTP-625, "Chain-of-Custody." The chain-of-custody record identified the contents of each shipment and <br /> maintained the custodial integrity of the samples. Generally, a sample was considered to be in a person's <br /> custody if it was in their physical possession or in their view,locked up, or kept in a secured area that was <br /> restricted to authorized personnel. The chain-of-custody included the following: <br /> • Sample identification numbers; <br /> • Site name; <br /> • Sample date(s); <br /> • Numbers and volumes of sample containers; <br /> • Required anayses; <br /> • Signatures and names of samplers; <br /> • Signature of any individual(s)with custody over samples; <br /> • Airbill number; and <br /> • Note(s) indicating special holding time and/or detection limits. <br /> Every transfer of custody was noted and signed for on the record, a copy of which was kept by an <br /> individual who signed. The original records accompanied the sample shipment with a separate record for <br /> each cooler. A copy was made for the SAIC master files. <br /> A.8: INVESTIGATION-DERIVED WASTE <br /> Soil cuttings, decontamination rinsate water, and purge water from the well development were stored in <br /> 55-gallon, DOT-rated drums and were properly labeled. Twenty-three 55-gallon drums containing soil <br /> cuttings were disposed by CEMC's waste hauling subcontractor, Sturgeon& Son, at Forward Landfill in <br /> Stockton, California. Two 55-gallon drums containing decontamination and purge water were disposed <br /> by Sturgeon& Son at the Altamont Landfill in Livermore, California. <br /> A-3 From Science to Solutions- <br />