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WG2599664 QUALITY CONTROL SUMMARY <br /> Volatile Organic Compounds (GC/MS) by Method 8260D L1895744-01 <br /> Method Blank (MB) <br /> (MB)R4274247-3 09/16/2510:17 Ed <br /> MB Result MB Qualifier MB MDL MB RDL PC <br /> Analyte mg/kg mg/kg mg/kg <br /> p-Isopropyltoluene U 0.00213 0.00500 <br /> 2-Butanone(MEK) U 0.0887 0.100 FS <br /> Methylene Chloride U 0.0110 0.0250 <br /> 4-Methyl-2-pentanone(MIBK) U 0.00992 0.0250 Rn <br /> Methyl tert-butyl ether U 0.000773 0.00100 <br /> Naphthalene U 0.00763 0.0125 <br /> n-Propylbenzene U 0.00169 0.00500 FSr <br /> Styrene U 0.00445 0.0125 <br /> 1,1,1,2-Tetrachloroethane U 0.00130 0.00250 <br /> 1,1,2,2-Tetrachloroethane U 0.00116 0.00250 <br /> 1,1,2-Trichlorotrifluoroethane U 0.00281 0.00500 <br /> Tetrachloroethene U 0.00152 0.00250 7Gl <br /> Toluene U 0.00289 0.00500 <br /> 1,2,3-Trichlorobenzene U 0.00699 0.0125 <br /> 1,2,4-Trichlorobenzene U 0.00542 0.0125 $Al <br /> 1,1,1-Trichloroethane U 0.00145 0.00250 <br /> 1,1,2-Trichloroethane U 0.00134 0.00250 FC <br /> Trichloroethene U 0.000891 0.00100 <br /> Trichlorofluoromethane U 0.00261 0.00400 <br /> 1,2,3-Trichloropropane U 0.00612 0.0125 <br /> 1,2,4-Trimethylbenzene U 0.00238 0.00500 <br /> 1,2,3-Trimethylbenzene U 0.00182 0.00500 <br /> 1,3,5-Trimethylbenzene U 0.00228 0.00500 <br /> Vinyl chloride U 0.00201 0.00250 <br /> Xylenes,Total U 0.00280 0.00650 <br /> (S)Toluene-d8 98.1 75.0-131 <br /> (S)4-Bromofluorobenzene 95.9 67.0-138 <br /> (S)1,2-Dichloroethone-d4 121 70.0-130 <br /> Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) <br /> (LCS)R4274247-1 09/16/25 08:41•(LCSD)R4274247-2 09/16/25 09:00 <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 3.13 3.32 3.49 106 112 10.0-160 4.99 31 <br /> Acrylonitrile 3.13 3.03 3.24 96.8 104 45.0-153 6.70 22 <br /> Benzene 0.625 0.635 0.617 102 98.7 70.0-123 2.88 20 <br /> Bromobenzene 0.625 0.629 0.601 101 96.2 73.0-121 4.55 20 <br /> Bromodichloromethane 0.625 0.653 0.643 104 103 73.0-121 1.54 20 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 32 of 53 <br />