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WG2599664 QUALITY CONTROL SUMMARY <br /> Volatile Organic Compounds (GC/MS) by Method 8260D L1895744-01 <br /> Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) C <br /> (LCS)R4274247-1 09/16/25 08:41•(LCSD)R4274247-2 09/16/25 09:00 p <br /> Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec.Limits LCS Qualifier LCSD Qualifier RPD RPD Limits z <br /> Analyte mg/kg mg/kg mg/kg % % % % % TC <br /> Naphthalene 0.625 0.549 0.567 87.8 90.7 59.0-130 3.23 20 <br /> n-Propylbenzene 0.625 0.660 0.636 106 102 74.0-126 3.70 20 FS <br /> Styrene 0.625 0.600 0.581 96.0 93.0 72.0-127 3.22 20 <br /> 1,1,1,2-Tetrachloroethane 0.625 0.617 0.604 98.7 96.6 74.0-129 2.13 20 Rn <br /> 1,1,2,2-Tetrachloroethane 0.625 0.627 0.622 100 99.5 68.0-128 0.801 20 <br /> 1,1,2-Trichlorotrifluoroethane 0.625 0.720 0.683 115 109 61.0-139 5.27 20 <br /> Tetrachloroethene 0.625 0.612 0.546 97.9 87.4 70.0-136 11.4 20 FSr <br /> Toluene 0.625 0.580 0.550 92.8 88.0 75.0-121 5.31 20 <br /> 1,2,3-Trichlorobenzene 0.625 0.643 0.640 103 102 59.0-139 0.468 20 <br /> 1,2,4-Trichlorobenzene 0.625 0.547 0.547 87.5 87.5 62.0-137 0.000 20 <br /> 1,1,1-Trichloroethane 0.625 0.760 0.737 122 118 69.0-126 3.07 20 <br /> 1,1,2-Trichloroethane 0.625 0.594 0.539 95.0 86.2 78.0-123 9.71 20 7G1 <br /> Trichloroethene 0.625 0.597 0.587 95.5 93.9 76.0-126 1.69 20 <br /> Trichlorofluoromethane 0.625 0.866 0.772 139 124 61.0-142 11.5 20 <br /> 1,2,3-Trichloropropane 0.625 0.655 0.645 105 103 67.0-129 1.54 20 $AI <br /> 1,2,4-Trimethylbenzene 0.625 0.641 0.593 103 94.9 70.0-126 7.78 20 <br /> 1,2,3-Trimethylbenzene 0.625 0.627 0.593 100 94.9 74.0-124 5.57 20 Fc <br /> 1,3,5-Trimethylbenzene 0.625 0.640 0.595 102 95.2 73.0-127 7.29 20 <br /> Vinyl chloride 0.625 0.784 0.754 125 121 63.0-134 3.90 20 <br /> Xylenes,Total 1.88 1.84 1.76 97.9 93.6 72.0-127 4.44 20 <br /> (S)Toluene-d8 94.8 93.3 75.0-131 <br /> (S)4-Bromofluorobenzene 94.7 95.8 67.0-138 <br /> (S)1,2-Dichloroethone-d4 123 126 70.0-130 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 34 of 53 <br />