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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 /> Project and Data Quality Objectives <br /> May 17, 2021 <br /> Completeness Percentage of validated, usable >_90% S&A <br /> Matrix: Soil <br /> Analytical Group: Organochlorine Pesticides <br /> Data Quality QC Sample and/or Method Used Measurement Performance QC Sample Assesses <br /> Indicators to Assess Measurement Criteria Error for Sampling <br /> Performance and/or Analytical <br /> Precision Field Duplicate RPD: <_50% S&A <br /> MS 10%- 158% recovery' A <br /> MS/MSD RPD: <_20-40% ' A <br /> LCS 22%- 150% recovery A <br /> LCS/LCSD RPD: <_20-34% ' A <br /> Lab Duplicate NA A <br /> Accuracy/Bias- Rinsate Blank OCP Concentrations< PQL S&A <br /> Contamination Method Blank OCP Concentrations< PQL A <br /> Accuracy/Bias LCS 22%- 150% recovery' A <br /> LCS/LCSD RPD: <_20-34% ' A <br /> MS 10%- 158% recovery' A <br /> MS/MSD RPD: <_20-40% ' A <br /> Accuracy Reporting Limit Verification 80- 120% A <br /> Completeness Percentage of validated, usable >_90% S&A <br /> Matrix: Soil Vapor <br /> Analytical Group:VOCs <br /> Data Quality QC Sample and/or Method Used Measurement Performance QC Sample Assesses <br /> Indicators to Assess Measurement Criteria Error for Sampling <br /> Performance and/or Analytical <br /> Precision Field Duplicate RPD: <_50% S&A <br /> Matrix Duplicate RPD: <_20% A <br /> Accuracy/Bias- Method Blank VOC Concentrations< PQL A <br /> Contamination <br /> Accuracy Surrogate Recover 1 4-Bromofluorobenzene 60%- A <br /> LCS 52%- 158% recovery' A <br /> LCS/LCSD RPD: <_25% A <br /> Completeness I Percentage of validated usable >_90% S&A <br /> Notes and Abbreviations: <br /> 1 -Range of acceptable recoveries varies by compound, range presented encompasses upper and lower limits for acceptable recovery <br /> across all potential spike compounds. <br /> LCS=laboratory control spike,LCSD=laboratory control spike duplicate,MS=matrix spike, MSD=matrix spike duplicate, NA=not <br /> applicable,OCP=organochlorine pesticides, PQL=practical quantitation limit,QC=quality control,RPD=relative percent difference, <br /> VOCs=volatile organic compounds <br /> M <br /> Project No.: 185704833.5.3&5.4 3.5 <br />