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ACCOUNT: PROJECT: <br />ATC -San Ramon, CA 204BS04278 <br />SDG: DATE/TIME: PAGE: <br />L1465194 03/03/2217:32 27 of 35 <br />WG1823984 <br />Volatile Organic Compounds <br />L1465139-01 Original <br />QUALITY CONTROL SUMMARY <br />(GC/MS) by Method 8260B L1465194-05,08 <br />Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br />(OS) [1465139-01 02/26/22 00:54 • (MS) R3764483-3 02/26/22 03:27 • (MSD) R3764483-4 02/26/22 03:46 <br />Spike Amount Original Result MSD Result MS Result (dry) MS Rec. MSD Rec. (dry) (dry) (dry) Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits <br />Analyte mg/kg mg/kg mg/kg mg/kg % % % % % <br />1,2,3-Trichlorobenzene 1.28 8.28 12.9 12.4 364 321 8 10.0-160 E V E V 4.35 40 <br />1,2,4-Trichlorobenzene 1.28 20.4 29.6 28.3 720 620 8 10.0-160 E V E V 4.42 40 <br />1,1,1-Trichloroethane 1.28 U 1.41 1.02 110 79.4 8 10.0-144 32.3 35 <br />1,1,2-Trichloroethane 1.28 U 1.33 1.33 104 104 8 10.0-160 0.000 35 <br />Trichloroethene 1.28 0.136 1.61 1.36 115 95.4 8 10.0-156 17.2 38 <br />Trichlorofluoromethane 1.28 U 1.31 0.943 102 73.6 8 10.0-160 32.3 40 <br />1,2,3-Trichloropropane 1.28 U 1.38 1.40 108 109 8 10.0-156 0.922 35 <br />1,2,3-Trimethylbenzene 1.28 7.26 11.9 10.8 360 273 8 10.0-160 VV 9.85 36 <br />1,3,5-Trimethylbenzene 1.28 7.76 12.4 11.3 363 275 8 10.0-160 v v _ 9.51 38 <br />Vinyl chloride 1.28 u 1.29 0.907 101 70.8 8 10.0-160 35.2 37 <br />(S)Toluene-d8 104 104 75.0-131 <br />(S)4-Bromofluorobenzene 131 116 6Z0-138 <br />(5)1,2-Dichloroethane-d4 96.3 96.6 70.0-130