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WG2599386 QUALITY CONTROL SUMMARY Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1895603-02 Laboratory Control Sample (LCS) (LCS)R4274292-1 09/16/2510:39 Ed Spike Amount LCS Result LCS Rec. Rec.Limits LCS Qualifier C Analyte mgA mg/I % T (S)2-Fluorobiphenyl 70.6 10.0-130 (S)2,4,6-Tribromopheno/ 91.0 10.0-155 FS (S)p-Terphenyl-d14 79.4 10.0-128 Rn L1895128-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS)L1895128-02 09/16/2511:43•(MS)R4274292-3 09/16/2512:05•(MSD)R4274292-4 09/16/2512:26 Sr Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec.Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/1 mg/I mg/I mg/I % % % % % 1,4-Dichlorobenzene 0.500 ND 0.243 0.235 48.6 47.0 1 17.0-120 3.35 40 2,4-Dinitrotoluene 0.500 ND 0.376 0.351 75.2 70.2 1 39.0-125 6.88 25 Hexachlorobenzene 0.500 ND 0.343 0.334 68.6 66.8 1 35.0-122 2.66 24 F Hexachloro-1,3-butadiene 0.500 ND 0.246 0.226 49.2 45.2 1 12.0-120 8.47 34 Hexachloroethane 0.500 ND 0.253 0.243 50.6 48.6 1 10.0-120 4.03 40 $AI Nitrobenzene 0.500 ND 0.244 0.229 48.8 45.8 1 12.0-120 6.34 30 Pyridine 0.500 ND ND 0.100 16.8 20.0 1 10.0-120 17.2 37 Fc 3&4-Methyl Phenol 0.500 ND 0.220 0.217 44.0 43.4 1 10.0-120 1.37 36 2-Methylphenol 0.500 ND 0.208 0.212 41.6 42.4 1 10.0-120 1.90 30 Pentachlorophenol 0.500 ND 0.287 0.285 57.4 57.0 1 10.0-128 0.699 37 2,4,5-Trichlorophenol 0.500 ND 0.352 0.332 70.4 66.4 1 33.0-120 5.85 31 2,4,6-Trichlorophenol 0.500 ND 0.356 0.330 71.2 66.0 1 26.0-120 7.58 31 (S)2-Fluorophenol 33.2 32.4 10.0-120 (S)Phenol-d5 22.1 20.0 10.0-120 (S)Nitrobenzene-d5 56.6 53.2 10.0-127 (S)2-Fluorobiphenyl 63.6 59.8 10.0-130 (S)2,4,6-Tribromophenol 88.0 86.0 10.0-155 (S)p-Terphenyl-dM 75.4 74.7 10.0-128 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895603 09/23/25 10:16 49 of 53