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• Collected samples, accompanied by a trip blank,were placed immediately in an ice-filled <br /> cooler for transport to a state-certified testing laboratory. Samples were kept chilled(at about <br /> VQ until delivery. <br /> • A completed Chain-of-Custody form, detailing the sample I.D. numbers,date and time <br /> collected, analyses requested, and other project information, accompanied each sample to the <br /> laboratory. The Chain-of-Custody forms were signed and dated by all personnel retaining <br /> custody of the samples (Appendix C). <br /> Surface-Water Sampling <br /> The sampling protocols listed below were generally followed during surface water sampling <br /> operations. <br /> • Surface-water sampling was performed by submerging laboratory-supplied sample <br /> containers, or a decontaminated dipper, in a slow moving portion of the surface water <br /> channel at the designated sampling station. <br /> • Sample preservation, order of collection, and Chain-of-Custody procedures described above <br /> for groundwater sampling were also adhered to for surface water sample collection. <br /> Soil-Pore Gas Field Screening <br /> Field screening of soil-pore probes at the French Camp Landfill were performed as follows: <br /> • Field screening was completed using a Landtec GEM 500 (or equivalent)that was calibrated <br /> daily with methane, carbon dioxide, and oxygen. <br /> • Each soil-pore gas probe was purged of at least one casing volume prior to recording the <br /> measured gas concentrations. <br /> • Methane, carbon dioxide,and oxygen were measured and recorded in volumetric percent at <br /> each monitoring probe. <br /> 3 <br /> DAFC_SAplantO6.doe <br /> Geologic Associates <br />