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QUALITY CONTROL SUMMARYWG2000470 <br />Volatile Organic Compounds (GC) by Method 8015 L1581654-01,02,03,04,05 <br />Method Blank (MB) <br />(MB) R3887936-2 02/05/23 19:59 <br /> MB Result MB Qualifier MB MDL MB RDL <br />Analyte mg/kg mg/kg mg/kg <br />TPHG C5 - C12 U 0.0332 0.100 <br /> (S) <br />a,a,a-Trifluorotoluene(FID)96.5 77.0-120 <br />Laboratory Control Sample (LCS) <br />(LCS) R3887936-1 02/05/23 18:48 <br /> Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier <br />Analyte mg/kg mg/kg %% <br />TPHG C5 - C12 5.50 4.43 80.5 72.0-125 <br /> (S) <br />a,a,a-Trifluorotoluene(FID) 103 77.0-120 <br />L1580672-10 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br />(OS) L1580672-10 02/05/23 23:04 • (MS) R3887936-3 02/06/23 03:08 • (MSD) R3887936-4 02/06/23 03:28 <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 />TPHG C5 - C12 5.50 0.127 2.76 2.86 47.9 50.1 1 10.0-141 3.56 29 <br /> (S) <br />a,a,a-Trifluorotoluene(FID) 99.7 99.2 77.0-120 <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 16 of 24 <br />ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: <br />711 Stantec - San Diego, CA 185851132.1200.0400 L1581654 02/06/23 16:41 16 of 24