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QUALITY CONTROL SUMMARYWG1999412 <br />Metals (ICP) by Method 6010B L1581654-01,02,03,04,05 <br />Method Blank (MB) <br />(MB) R3887437-1 02/03/23 14:27 <br /> MB Result MB Qualifier MB MDL MB RDL <br />Analyte mg/kg mg/kg mg/kg <br />Lead U 0.208 0.500 <br />Laboratory Control Sample (LCS) <br />(LCS) R3887437-2 02/03/23 14:30 <br /> Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier <br />Analyte mg/kg mg/kg %% <br />Lead 100 90.1 90.1 80.0-120 <br />L1581649-17 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br />(OS) L1581649-17 02/03/23 14:32 • (MS) R3887437-5 02/03/23 14:40 • (MSD) R3887437-6 02/03/23 14:43 <br /> Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits <br />Analyte mg/kg mg/kg mg/kg mg/kg %%%%% <br />Lead 99.5 2.50 88.8 68.0 86.3 65.5 1 75.0-125 J3 J6 26.6 20 <br />1 Cp <br />2 Tc <br />3 Ss <br />4 Cn <br />5 Sr <br />6 Qc <br />7 Gl <br />8 Al <br />9 Sc <br />ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: <br />711 Stantec - San Diego, CA 185851132.1200.0400 L1581654 02/06/23 15:51 15 of 24 <br />ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: <br />711 Stantec - San Diego, CA 185851132.1200.0400 L1581654 02/06/23 16:41 15 of 24