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4 <br />Cn <br />2 <br />Tc <br />3 <br />SS <br />10 <br />Sc <br />GI <br />'Al <br />I. <br />WG1804522 QUALITY CONTROL SUMMARY <br />Volatile Organic Compounds (GC/MS) by Method 826013 L1452254-01 <br />Method Blank (MB) <br />MB Qualifier <br />(MB) R3751767-3 01/19/22 08:17 <br />MB Result <br />Analyte mg/kg <br />p-Isopropyltoluene <br />2-Butanone (MEK) <br />Methylene Chloride <br />4-Methyl-2-pentanone (MIBK) U <br />Methyl tert-butyl ether <br />Naphthalene <br />n-Propylbenzene <br />Styrene <br />1,1,1,2-Tetrachloroethane <br />1,1,2,2-Tetrachloroethane <br />Tetrachloroethene <br />Toluene <br />1,1,2-Trichlorotrifluoroethane U <br />1,2,3-Trichlorobenzene <br />1,2,4-Trichlorobenzene <br />1,1,1-Trichloroethane <br />1,1,2-Trichloroethane <br />Trichloroethene <br />Trichlorofluoromethane <br />1,2,3-Trichloropropane <br />1,2,3-Trimethylbenzene <br />1,2,4-Trimethylbenzene <br />1,3,5-Trimethylbenzene <br />Vinyl chloride <br />Xylenes, Total <br />(S)Toluene-d8 102 <br />(5)4-Bromofluorobenzene 107 <br />(S)1,2-Dichloroethane-d4 105 <br />MB MDL MB RDL <br />mg/kg mg/kg <br />0.00255 0.00500 <br />0.0635 0.100 <br />0.00664 0.0250 <br />0.00228 0.0250 <br />0.000350 0.00100 <br />0.00488 0.0125 <br />0.000950 0.00500 <br />0.000229 0.0125 <br />0.000948 0.00250 <br />0.000695 0.00250 <br />0.000896 0.00250 <br />0.00130 0.00500 <br />0.000754 0.00250 <br />0.00733 0.0125 <br />0.00440 0.0125 <br />0.000923 0.00250 <br />0.000597 0.00250 <br />0.000584 0.00100 <br />0.000827 0.00250 <br />0.00162 0.0125 <br />0.00158 0.00500 <br />0.00158 0.00500 <br />0.00200 0.00500 <br />0.00116 0.00250 <br />0.000880 0.00650 <br />75.0-131 <br />67.0-138 <br />70.0-130 <br />Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) <br />(LCS) R3751767-1 01/19/22 06:43 • (LCSD) R3751767-2 01/19/22 07:01 <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 />Acetone 0.625 0.795 0.750 127 120 10.0-160 5.83 31 <br />Aciylonitrile 0.625 0.691 0.644 111 103 45.0-153 7.04 22 <br />Benzene 0.125 0.125 0.125 100 100 70.0-123 0.000 20 <br />Bromobenzene 0.125 0.132 0.134 106 107 73.0-121 1.50 20 <br />Bromodichloromethane 0.125 0.133 0.127 106 102 73.0-121 4.62 20 <br />ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br />ATC - San Ramon, CA 204BS04278 <br /> <br />L1452254 <br /> <br />01/27/2211:24 15 of 23