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1 SAP/QAPP Addendum <br /> O Lodi-125 N Stockton <br /> Final <br /> March 24,2025 <br /> SITE-SPECIFIC QAPP WORKSHEET #12 (CONTINUED) <br /> MEASUREMENT PERFORMANCE CRITERIA <br /> Matrix Soil <br /> Analytical Group Arsenic and Lead <br /> Concentration ICP-MS <br /> Level <br /> Sampling Laboratory SOP Measurement QC Sample and/or Activity QC Sample Assesses Error <br /> Procedures Reference DQIs Performance Criteria Used to Assess for Sampling(S),Analytical <br /> Measurement Performance (A), or both(S&A) <br /> Various GEL-MA-E-014 Precision _< 70%RPD Field duplicate S &A <br /> Various GEL-MA-E-014 Accuracy/Bias All metals: 80-120%R LCS A <br /> Various GEL-MA-E-014 Accuracy/Bias All metals: 75-125%R MS/MSD S &A <br /> Various GEL-MA-E-014 Precision All metals: < 20%RPD MS/MSD S &A <br /> Various GEL-MA-E-014 Accuracy/Bias- All metals: < QL Method blank A <br /> Contamination <br /> Data completeness is <br /> determined by the amount of <br /> Various GEL-MA-E-014 Completeness > 90% data not qualified as rejected S &A <br /> after validation divided by the <br /> amount of data intended to be <br /> generated. <br /> 28 <br />