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1214 E. Lexington Avenue, <br />Date Analyzed: <br />Machine: <br />Matrix Spike (MS)/Matrix <br />Spiked Sample Lab I.D.: <br />Pomona, CA 91766 <br />10/25-26/2022 <br />Enviro-Chem, Inc. <br />Tel (909)590-5905 Fax (909)590-5907 <br />8260B QA/QC Report <br />Matrix: <br />Unit: <br />MS/MSD <br />Solid/Soll/Liquid <br />D <br />Spike Duplicate (MSD) <br />221021-115 <br />m ci/K0 (PPM), <br />Analyte S.R. spk conc MS %RC MSD j %RC %RFD ACP %RC ACP RPD .J Benzene 0 0.050 0.047 94% 0.046 92% 2% 75-125 0-20 <br />Chlorobenzene 0 0.050 0.051 102% 0.050 100% 2% 75-125 0-20 <br />1,1-Dichloroethene 0 0.050 0.050 100% 0.043 86% 14% 75-125 0-20 <br />Toluene 0 0.050 0.047 94% 0.045 90% 4% 75-125 0-20 <br />Trichloroethene (TCE) 0 0.050 0.054 108% 0.053 106% 2% 75-125 0-20 <br />Lab Control Spike (LCS): <br />Analyte spk conc LCS %RC ACP %RC <br />Benzene . 0.050 0.047 94% 75-125 <br />Chlorobenzene . 0.050 0.051 102% 75-125 <br />Chloroform 0.050 0.044 88% 75-125 <br />1,1-Dichlorothene 0.050 0.057 114% 75-125 <br />Ethylbenzene 0.050 0.052 104% 75-125 <br />o-Xylene 0.050 0.052 104% 75-125 <br />m,p-Xylene _ 0.100 0.082 82% 75-125 <br />Toluene 0.050 0.048 96% 75-125 <br />1,1,1-Trichloroethane 0.050 0.045 90% 75-125 <br />Trichloroethene (TCE) 0.050 0.053 106% 75-125 <br />Surrogate Recovery 1 spk conc ACP %RC MB %RC %RC %RC %RC %RC %RC %RC <br />Sample I.D. IVI-BLK 221021-115 221021-125 221024-4 221024-5 221021-105 221024-23 <br />Dibromofluoromethane 50.0 70-130 110% 112% 117% 116% 115% 100% 112% <br />Toluene-d8 50.0 70-130 103% 103% 103% 104% 104% 105% 105% <br />4-Bromofluorobenzene 50.0 70-130 96% 94% 93% 95% 94% 96% 100% <br />Surrogate Recovery I spk cone ACP %RC %RC %RC %RC %RC %RC %RC j %RC <br />Sample I.D. I 221025-6 221025-7+8 221025-10 221024-18 221024-19 221024-20 221025-12 <br />Dibromofluoromethane ' 50.0 70-130 108% 106% 92% 93% 89% 90% 94% <br />Toluene-d8 50.0 70-130 102% 114% 103% 99% 96% 96% 96% <br />4-Bromofluorobenzene 50.0 70-130 1 95% 75% 1 93% 106% 100% 103% 98% <br />Surrogate Recovery _ spk conc ACP %RC KRC %RC %RC %RC %RC %RC %RC <br />Sample I.D. <br />Dibromofluoromethane 50.0 70-130 <br />Toluene-d8 50.0 70-130 <br />4-Bromofluorobenzene 50.0 70-130 <br />"= Surrogate fail due to <br />S.R. = Sample Results <br />spk conc = Spike Concentration <br />MS = Matrix Spike <br />Analyzed/Reviewed : • <br />' <br />Final Reviewer: <br />matrix interference; LCS, MS, MSD are in control therefore the analysis is in controL <br />%RC = Percent Recovery <br />ACP %RC = Accepted Percent Recovery <br />MSD = Matrix Spike Duplicate <br />7 ,