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Sampling and Analysis Plan for <br /> Phase II Environmental Site Assessment <br /> South Pointe Property: 701, 705, 833, 855 West Weber Avenue <br /> Stockton, California <br /> Quality Controls <br /> May 17, 2021 <br /> 10.4 LABORATORY QUALITY CONTROL SAMPLES <br /> A routinely collected soil sample (a full 8-oz sample jar) contains sufficient volume for both routine sample <br /> analysis and additional laboratory QC analyses. Therefore, a separate soil sample for laboratory QC <br /> purposes will not be collected. <br /> At a minimum, one laboratory QC sample is required per 14 days or one per 20 samples (including blanks <br /> and duplicates), whichever is greater. If the sample event lasts longer than 14 days or involves collection <br /> of more than 20 samples per matrix, additional QC samples will be designated. <br /> For this sampling event, samples collected from locations TP-9, TP-14, and TP-16 will be designated as <br /> laboratory QA/QC samples. <br /> M <br /> Project No.: 185704833.5.3&5.4 10.3 <br />