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WG2044363 QUALITY CONTROL SUMMARY <br /> Volatile Organic Compounds (GC/MS) by Method 8260B L1606082-03 <br /> Method Blank (MB) <br /> (MB)R3914818-3 04/18/23 22:24 ip] <br /> MB Result MB Qualifier MB MDL MB RDL Fc <br /> Analyte ug/I ug/I ug/I C <br /> 4-Methyl-2-pentanone(MIBK) U 0.478 10.0 <br /> Naphthalene U 1.00 5.00 FS <br /> n-Propylbenzene U 0.0993 1.00 <br /> Styrene U 0.118 1.00 FCn]1,1,1,2-Tetrachloroethane U 0.147 1.00 <br /> 1,1,2,2-Tetrachloroethane U 0.133 1.00 <br /> 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 Fr <br /> Tetrachloroethene U 0.300 1.00 <br /> Toluene U 0.278 1.00 <br /> 1,2,4-Trichlorobenzene U 0.481 1.00 � <br /> 1,1,1-Trichloroethane U 0.149 1.00 <br /> 1,1,2-Trichloroethane U 0.158 1.00 FGI <br /> Trichloroethene U 0.190 1.00 <br /> Trichlorofluoromethane U 0.160 5.00 <br /> 1,2,3-Trichloropropane U 0.237 2.50 gAl <br /> 1,2,4-Trimethylbenzene U 0.322 1.00 <br /> 1,3,5-Trimethyl benzene U 0.104 1.00 FC <br /> Vinyl acetate U 0.692 10.0 <br /> Vinyl chloride U 0.234 1.00 <br /> Xylenes,Total U 0.174 3.00 <br /> Di-isopropyl ether U 0.105 1.00 <br /> Ethanol U 42.0 100 <br /> Ethyl tert-butyl ether U 0.101 1.00 <br /> Methyl tert-butyl ether U 0.101 1.00 <br /> tert-Butyl alcohol U 4.06 5.00 <br /> tert-Amyl Methyl Ether U 0.195 1.00 <br /> (S)Toluene-d8 109 80.0-120 <br /> (S)4-Bromofluorobenzene 96.6 77.0-126 <br /> (S)1,2-Dichloroethone-d4 99.4 70.0-130 <br /> Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) <br /> (LCS)R3914818-1 04/18/23 21:23•(LCSD)R3914816-2 04/18/23 21:43 <br /> Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec.Limits LCS Qualifier LCSD Qualifier RPD RPD Limits <br /> Analyte ug/I ug/I ug/I % % % % % <br /> Acetone 25.0 25.6 29.6 102 118 19.0-160 14.5 27 <br /> Acrylonitrile 25.0 24.5 26.3 98.0 105 55.0-149 7.09 20 <br /> Benzene 5.00 4.73 5.48 94.6 110 70.0-123 14.7 20 <br /> Bromobenzene 5.00 4.19 4.61 83.8 92.2 73.0-121 9.55 20 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> Antea-Rancho Cordova ARCO 2093 L1606082 04/21/2314:00 25 of 34 <br />