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SAP/QAPP Addendum <br /> Lodi-125 N Stockton <br /> Final <br /> March 24,2025 <br /> SITE-SPECIFIC QAPP WORKSHEET #28 (CONTINUED) <br /> ANALYTICAL QC AND CORRECTIVE ACTION <br /> Matrix Soil <br /> Analytical Group PAHs <br /> Concentration Level SIM <br /> Sampling SOP SOP#004-2 (Soil) <br /> Analytical Method EPA 8270-SIM <br /> Sampler's Name/ Organization TBD/Toeroek Team <br /> Analytical Organization GEL Laboratories,Inc. <br /> No. of Sampling Locations See Site-Specific QAPP Worksheet#20 <br /> Person(s) Measurement <br /> QC Samples Frequency/ Corrective Action(CA) Responsible DQI Performance <br /> Numbers for CA Criteria <br /> Reanalyze samples in affected batch along with a <br /> Method Blank 1 per batch of 20 new method blank.If sufficient volume is not Laboratory Accuracy/Bias No target <br /> samples maximum available,qualify all detections less than ten times Analyst Contamination compounds > QL <br /> blank amount. <br /> 1 per batch of 20 Re-analyze affected samples.If sufficient volume Laboratory %R as presented in <br /> LCS Anal <br /> is not available,qualify all sample results for Accuracy Site-Specific QAPP <br /> samples maximum failing analytes. yst Worksheet#12 <br /> If sufficient volume is available,re-prep and re- %R and RPD as <br /> Matrix Spike/Matrix 1 per batch of 20 Laboratory Accuracy and presented in Site- <br /> Spike Duplicate samples maximum analyze matrix spike sample. Otherwise,analyze Analyst Precision Specific QAPP <br /> LCS to see if problem is analysis or sample. <br /> Worksheet#12 <br /> Re-analyze sample extract.If on re-analysis,the <br /> surrogate meets criteria report re-analysis results. o <br /> Deuterated Monitoring /oR as presented in <br /> Compounds All samples If upon re-analysis,the monitoring compound Laboratory Accuracy Site-Specific QAPP <br /> (Surrogates) does not meet criteria,re-prep and re-analyze the Analyst Worksheet#12 <br /> sample. If surrogate still does not meet criteria, <br /> report the results in the narrative. <br /> 66 <br />