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9 Quality Assurance and Control <br /> (QA/QC) <br /> General procedures for field sampling QA/QC are presented in the TBA SAP. Site-specific <br /> criteria used to select field QA/QC sample locations, including duplicate and matrix spike/matrix <br /> spike duplicate(MS/MSD) sampling are described here. Samples were selected for duplicate <br /> analysis at a rate of 10 percent. Samples for MS/MSD analysis were selected at a rate of 5 <br /> percent. A rinsate blank will be collected at a rate of one per day to evaluate decontamination <br /> procedures at the site. The rinsate blank will be collected by pouring water,distilled/deionized <br /> water for VOCs and distilled water for non-volatile rinse blanks,over the decontaminated sample <br /> collection device(e.g.,hand auger, slide hammer, shovel, gravity core sampler)and capturing <br /> the water in the specified sample container. One blank soil gas sample will be collected. <br /> 002693.1501.01BR 9-1 <br /> EI C.ilio N.2 <br />