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Stantec <br /> PEA WORKPLAN <br /> Proposed Lodi Energy Center Site <br /> Lodi, California <br /> 6.0 QUALITY ASSURANCE AND QUALITY CONTROL <br /> Quality assurance and quality control (QA/QC) measures will be conducted as specified in the <br /> attached Quality Assurance Project Plan (QAPP; Appendix E). QA/QC measures are briefly <br /> summarized below: <br /> 6.1 FIELD QUALITY CONTROL <br /> Field quality control will include: <br /> • Documenting field instrument calibration and sample container preparation. <br /> • Documenting and justifying deviations from this Workplan. <br /> • Documenting field activities in a log book, including collection of Site photographs. <br /> • Documenting sample delivery and integrity of samples. A chain of custody record will <br /> accompany the samples. <br /> • Decontaminating equipment that may cause cross-contamination between sampling <br /> locations. <br /> • Generating quality control samples, including: <br /> o Field Duplicate Samples: Duplicate analyses will indicate if field or laboratory quality <br /> control measures were acceptable. In accordance with the PEA Guidance Manual <br /> five percent field duplicates will be collected, which will include two duplicate soil <br /> samples for the 40 proposed soil samples collected . <br /> o Trip Blank Sample: One trip blank sample will be collected and analyzed for VOCs <br /> for each cooler of soil samples submitted to the laboratory. <br /> 6.2 ANALYTICAL QUALITY CONTROL <br /> Level III analytical quality control measures will be taken by the laboratory to ensure the validity <br /> and integrity of the results. The laboratory will analyze the following quality control samples: <br /> • Method Blank: A method blank will be analyzed one per each analytical method at the <br /> rate of one sample per batch or 20 samples. This method blank is to identify if the <br /> analytical instruments or sample preparation caused false values and will be performed <br /> daily for volatile organic analysis. <br /> • Matrix Spike and Matrix Spike Duplicates: A spiked sample will be analyzed one per <br /> each analytical method with every analytical batch or once every 20 or fewer samples. <br /> The laboratory will conduct these analyses to ensure that the method recovery of the <br /> compounds is within acceptable limits. <br /> PEA WP-Lodi 14 August 13,2009 <br />