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Attachment C:Field Investigation Procedures and Boring Logs SAMPLE CUSTODY The integrity of environmental samples collected during this investigation was ensured, from collection to final dispostion, by documenting possession, in accordance with SAIC FTP No. 625, "Chain-of-Custody."The chain-of-custody record identified the contents of each shipment and maintained the custodial integrity of the samples. Generally, a sample was considered to be in a person's custody if it was in their physical possession or in their view, locked up, or kept in a secured area that was restricted to authorized personnel. The chain-of-custody record included the following: • Sample identification numbers; • Site name; • Sample date(s); • Numbers and volumes of sample containers; • Required analyses; • Signatures and names of samplers; • Signature of any individual(s)with custody over samples; • Airbill number; and • Note(s) indicating special holding time and/or detection limits. Every transfer of custody was noted and signed for on the record, a copy of which was kept by an individual who signed. The original records accompanied the sample shipment with a separate record for each cooler. A copy was made for the SAIC master files. INVESTIGATION-DERIVED WASTE (IDW) To properly store, characterize, and dispose of IDW, SAIC conducted the following: • Placed all IDW (soil cuttings and unused soil sample, disposable sampling equipment, used personal protective equipment, and decontamination water) in United States Department of Transportation-approved, 55-gallon drums. • Properly labeled, secured, and stored IDW-containing drums on site pending disposal as coordinated by Conestoga-Rovers &Associates. Waste was disposed of at Altamont Landfill on March 5, April 1, October 1, and December 14, 2012.