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Stantec <br /> PEA WORKPLAN <br /> Proposed Lodi Energy Center Site <br /> Lodi, California <br /> • Laboratory Duplicates: Laboratory duplicates for internal QA/QC sample analyses may <br /> be duplicated by analyzing separate aliquot from a field sample. <br /> • Surrogate Spike Compounds: Every blank, standard, and environmental sample will be <br /> spiked with surrogate compounds prior to purging or extraction. The laboratory will <br /> ensure that surrogate spike recoveries fall within the control limits specified by the <br /> analytical method. <br /> • Check Sample, Column Check Sample, Column Check Sample Blank: The laboratory <br /> will run these and any other quality control samples specified by the method to ensure <br /> accuracy and validity of the analytical result. <br /> Quality control data and records will be supplied by the analytical laboratories as part of each <br /> analytical laboratory report generated for the Site. <br /> PEA WP-Lodi 15 August 13,2009 <br />