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TRENCH GRIT SAMPLE RESULTS - 01 Collected date/time: 09/05/25 08:00 L1895744 Volatile Organic Compounds (GC/MS) by Method 8260D Result(dry) Qualifier RDL(dry) Dilution Analysis Batch Cp Analyte mg/kg mg/kg date/time Chlorodibromomethane ND 0.0108 1 09/16/202511:05 WG2599664 FTC] Chloroethane ND 0.0432 1 09/16/202511:05 WG2599664 Chloroform 0.313 0.0108 1 09/16/202511:05 WG2599664 F Chloromethane ND J4 0.0540 1 09/16/202511:05 WG2599664 2-Chlorotoluene ND 0.0108 1 09/16/202511:05 WG2599664 4-Chlorotoluene ND 0.0216 1 09/16/202511:05 WG2599664 FCn] 1,2-Dibromo-3-ChIoropropane ND 0.108 1 09/16/202511:05 WG2599664 1,2-Dibromoethane ND 0.0108 1 09/16/202511:05 WG2599664 Dibromomethane ND 0.0216 1 09/16/202511:05 WG2599664 1,2-Dichlorobenzene ND 0.0216 1 09/16/202511:05 WG2599664 1,3-Dichlorobenzene ND 0.0216 1 09/16/202511:05 WG2599664 s QC 1,4-Dichlorobenzene ND 0.0216 1 09/16/202511:05 WG2599664 D i c h I o rod ifl u o ro m eth a n e ND 0.0216 1 09/16/202511:05 WG2599664 1,1-Dichloroethane ND 0.0108 1 09/16/202511:05 WG2599664 GI 1,2-Dichloroethane ND 0.0108 1 09/16/202511:05 WG2599664 1,1-Dichloroethene ND 0.0108 1 09/16/202511:05 WG2599664 JAI cis-1,2-Dichloroethene ND 0.0108 1 09/16/202511:05 WG2599664 trans-1,2-Dichloroethene ND 0.0216 1 09/16/202511:05 WG2599664 9 1,2-Dichloropropane ND 0.0216 1 09/16/202511:05 WG2599664 qc 1,1-Dichloropropene ND 0.0216 1 09/16/202511:05 WG2599664 1,3-Dichloropropane ND 0.0216 1 09/16/202511:05 WG2599664 cis-1,3-Dichloropropene ND 0.0108 1 09/16/202511:05 WG2599664 trans-1,3-Dichloropropene ND 0.0216 1 09/16/202511:05 WG2599664 2,2-Dichloropropane ND J4 0.0108 1 09/16/202511:05 WG2599664 Di-isopropyl ether ND 0.00432 1 09/16/202511:05 WG2599664 Ethylbenzene 0.135 0.0108 1 09/16/202511:05 WG2599664 Hexachloro-1,3-butadiene ND 0.108 1 09/16/202511:05 WG2599664 Isopropyl benzene 0.0207 0.0108 1 09/16/202511:05 WG2599664 p-Isopropyltoluene 0.0497 0.0216 1 09/16/202511:05 WG2599664 2-Butanone(MEK) ND 0.432 1 09/16/202511:05 WG2599664 Methylene Chloride 0.233 0.108 1 09/16/202511:05 WG2599664 4-Methyl-2-pentanone(MIBK) ND 0.108 1 09/16/202511:05 WG2599664 Methyl tert-butyl ether ND 0.00432 1 09/16/202511:05 WG2599664 Naphthalene 0.171 0.0540 1 09/16/202511:05 WG2599664 n-Propylbenzene 0.0791 0.0216 1 09/16/202511:05 WG2599664 Styrene 0.0963 0.0540 1 09/16/202511:05 WG2599664 1,1,1,2-Tetrachloroethane ND 0.0108 1 09/16/202511:05 WG2599664 1,1,2,2-Tetrachloroethane ND 0.0108 1 09/16/202511:05 WG2599664 1,1,2-Trichlorotrifluoroethane ND 0.0216 1 09/16/202511:05 WG2599664 Tetrachloroethene 0.0484 0.0108 1 09/16/202511:05 WG2599664 Toluene 0.213 0.0216 1 09/16/202511:05 WG2599664 1,2,3-Trichlorobenzene ND 0.0540 1 09/16/202511:05 WG2599664 1,2,4-Trichlorobenzene ND 0.0540 1 09/16/202511:05 WG2599664 1,1,1-Trichloroethane ND 0.0108 1 09/16/202511:05 WG2599664 1,1,2-Trichloroethane ND 0.0108 1 09/16/202511:05 WG2599664 Trichloroethene ND 0.00432 1 09/16/202511:05 WG2599664 Trichlorofluoromethane ND 0.0173 1 09/16/202511:05 WG2599664 1,2,3-Trichloropropane ND 0.0540 1 09/16/202511:05 WG2599664 1,2,4-Trimethylbenzene 0.557 0.0216 1 09/16/202511:05 WG2599664 1,2,3-Trim ethyl benzene 0.170 0.0216 1 09/16/202511:05 WG2599664 1,3,5-Trim ethyl benzene 0.147 0.0216 1 09/16/202511:05 WG2599664 Vinyl chloride ND 0.0108 1 09/16/202511:05 WG2599664 Xylenes,Total 0.855 0.0281 1 09/16/202511:05 WG2599664 (S)Toluene-d8 97.1 75.0-131 091161202511.05 WG2599664 (S)4-Bromof/uorobenzene 99.7 67.0-138 091161202511.05 WG2599664 (S)1,2-Dichloroethane-d4 101 70.0-130 091161202511.05 WG2599664 ACCOUNT: PROJECT: S DG: DATE/TIME: PAGE: UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 6 of 53