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Method Blank (MB) <br />(MB) R3764804-3 02/28/22 15:06 <br />MB Result <br />Analyte mg/kg <br />MB Qualifier MB MDL MB RDL <br />mg/kg mg/kg <br />p-lsopropyltoluene u 0.00255 0.00500 <br />2-Butanone (MEK) U 0.0635 0.100 <br />Methylene Chloride u 0.00664 0.0250 <br />4-Methyl-2-pentanone (MIBK) U 0.00228 0.0250 <br />Methyl tert-butyl ether U 0.000350 0.00100 <br />Naphthalene U 0.00488 0.0125 <br />n-Propylbenzene U 0.000950 0.00500 <br />Styrene U 0.000229 0.0125 <br />1,1,1,2-Tetrachloroethane U 0.000948 0.00250 <br />1,1,2,2-Tetrachloroethane U 0.000695 0.00250 <br />1,1.2-Trichlorotrifluoroethane U 0.000754 0.00250 <br />Tetrachloroethene U 0.000896 0.00250 <br />Toluene U 0.00130 0.00500 <br />1,2,3-Trichlorobenzene U 0.00733 0.0125 <br />1,14-Trichlorobenzene U 0.00440 0.0125 <br />1,1,1-Trichloroethane U 0.000923 0.00250 <br />1,1,2-Trichloroethane U 0.000597 0.00250 <br />Trichloroethene U 0.000584 0.00100 <br />Trichlorofluoromethane U 0.000827 0.00250 <br />1,2,3-Trichloropropane U 0.00162 0.0125 <br />1,2,4-Trimethylbenzene U 0.00158 0.00500 <br />1,2,3-Trimethylbenzene u 0.00158 0.00500 <br />1,3,5-Trimethylbenzene U 0.00200 0.00500 <br />Vinyl chloride U 0.00116 0.00250 <br />Xylenes, Total U 0.000880 0.00650 <br />(S)Toluene-d8 105 75.0-131 <br />(S)4-Bromotluorobenzene 90.2 670-138 <br />(S)1,2-Dichloroethone-d4 86.3 70.0-130 <br />WG1824845 QUALITY CONTROL SUMMARY <br />Volatile Organic Compounds (GC/MS) by Method 82606 L1465194-01,05.08 <br />Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) <br />(LCS) R3764804-1 02/28/22 13:48 • (LCSD) R3764804-2 02/28/22 14:07 <br />Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits <br />Analyte mg/kg mg/kg mg/kg <br /> <br />Acetone 0.625 0.367 0.343 58.7 54.9 10.0-160 6.76 31 <br />Aciylonitrile 0.625 0.477 0.532 76.3 85.1 45.0-153 10.9 22 <br />Benzene 0.125 0.118 0.115 94.4 92.0 70.0-123 2.58 20 <br />Bromobenzene 0.125 0.116 0.118 92.8 94.4 73.0-121 1.71 20 <br />Bromodichloromethane 0.125 0.126 0.121 101 96.8 73.0-121 4.05 20 <br /> <br />ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br />ATC - San Ramon, CA 2048504278 L1465194 03/03/22 17:32 29 of 35