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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 TPH-GRO <br /> Concentration Level NA <br /> Sampling SOP SOP#004-2 <br /> Analytical Method EPA 8015M <br /> Sampler's Name/ Toeroek Team <br /> Organization <br /> Analytical Organization GEL Laboratories,Inc. <br /> No. of Sampling See Site-Specific <br /> Locations QAPP Worksheet#20 <br /> Person(s) Measurement <br /> QC Samplea Frequency/ Corrective Action (CA) Responsible DQI Performance <br /> Numbers for CA Criteria <br /> If sufficient volume is available,re-prep and <br /> Method Blank 1 per batch of 20 re-analyze samples in affected batch. Laboratory Accuracy/Bias No target <br /> samples maximum Qualify all detections less than 10 times Analyst Contamination compounds > QL <br /> blank amount. <br /> If sufficient volume is available,re-prep and %R and RPD as <br /> Matrix Spike/Matrix 1 per batch of 20 re-analyze matrix spike sample. Otherwise, Laboratory Accuracy and presented in Site- <br /> Spike Duplicate samples maximum analyze laboratory control sample to see if Analyst Precision Specific QAPP <br /> problem is analysis or sample. Worksheet#12 <br /> Laboratory Control 1 per batch of 20 <br /> Re-analyze affected samples.If sufficient Laboratory %R as presented in <br /> Sample samples maximum volume is not available,qualify all sample Analyst Accuracy Site-Specific QAPP <br /> results for failing analytes. Worksheet#12 <br /> Re-analyze sample. If on re-analysis,the <br /> surrogate meets criteria,report re-analysis %R as presented in <br /> Surrogate Spike All samples results. If upon re-anal sis the monitoring Laboratory AccuracySite-Specific APP <br /> g p� p p Y � g Analyst p Q <br /> compound does not meet criteria,report Worksheet#12 <br /> the results in the narrative. <br /> 64 <br />