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WG2597763 QUALITY CONTROL SUMMARY Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1895603-01 L1895458-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) Ed (OS)L1895458-01 09/15/2518:42•(MS)R4274976-3 09/15/2519:05•(MSD)R4274976-4 09/15/2519:29 Spike Amount Original Result MSD Result (dry) (dry) MS Result(dry) (dry) MS Rec. MSD Rec. Dilution Rec.Limits MS Qualifier MSD Qualifier RPD RPD Limits PC Analyte mg/kg mg/kg mg/kg mg/kg % % % % % 2,6-Dinitrotoluene 0.725 ND ND ND 50.0 53.3 2 25.0-120 6.13 31 FS Fluoranthene 0.725 ND 0.524 0.397 70.5 53.2 2 18.0-126 27.5 32 Fluorene 0.725 ND 0.329 0.403 45.3 55.7 2 25.0-120 20.3 30 Hexachlorobenzene 0.725 ND ND ND 52.9 47.0 2 27.0-120 12.1 28 4 Cn Hexac h lo ro-1,3-butad ie n e 0.725 ND ND ND 49.2 47.1 2 10.0-120 4.69 38 Hexachlorocyclopentadiene 0.725 ND ND ND 0.000 0.000 2 10.0-120 J6 J6 0.000 40 Fr Hexachloroethane 0.725 ND ND ND 47.1 39.3 2 10.0-120 18.5 40 Indeno(1,2,3-cd)pyrene 0.725 ND 0.313 0.259 43.2 35.8 2 10.0-120 19.1 32 Isophorone 0.725 ND ND ND 48.2 50.8 2 13.0-120 4.88 34 Naphthalene 0.725 ND 0.326 0.290 45.0 40.2 2 10.0-120 11.7 35 Nitrobenzene 0.725 ND ND ND 50.0 52.7 2 10.0-120 4.99 36 n-Nitrosodimethylamine 0.725 ND ND ND 78.9 74.9 2 10.0-127 5.49 40 GI n-Nitrosodiphenylamine 0.725 ND ND ND 50.3 47.7 2 17.0-120 5.54 29 n-Nitrosodi-n-propylamine 0.725 ND ND ND 55.4 48.3 2 10.0-120 14.0 37 AI Phenanthrene 0.725 ND 0.425 0.383 58.6 53.0 2 17.0-120 10.3 31 Benzylbutyl phthalate 0.725 ND ND ND 66.6 69.0 2 23.0-120 3.34 30 FSC Bis(2-ethylhexyl)phthalate 0.725 ND ND ND 64.9 62.4 2 17.0-126 4.27 30 Di-n-butyl phthalate 0.725 ND ND ND 66.9 54.7 2 30.0-120 20.3 29 Diethyl phthalate 0.725 ND ND ND 48.3 64.5 2 26.0-120 J3 28.3 28 Dimethyl phthalate 0.725 ND ND ND 52.3 51.8 2 25.0-120 1.16 29 Di-n-octyl phthalate 0.725 ND ND ND 64.8 73.1 2 21.0-123 11.8 29 Pyrene 0.725 ND 0.407 0.435 54.6 58.5 2 16.0-121 6.49 32 1,2,4-Trichlorobenzene 0.725 ND ND ND 48.2 44.3 2 12.0-120 8.81 37 4-Chloro-3-methylphenol 0.725 ND ND ND 55.0 55.0 2 15.0-120 0.274 30 2-Chlorophenol 0.725 ND ND ND 52.0 49.1 2 15.0-120 5.97 37 2,4-Dichlorophenol 0.725 ND ND ND 59.9 55.1 2 20.0-120 8.65 31 2,4-Dimethylphenol 0.725 ND ND ND 49.1 48.3 2 10.0-120 1.86 33 4,6-Dinitro-2-methylphenol 0.725 ND ND ND 0.000 0.000 2 10.0-120 J6 J6 0.000 39 2,4-Dinitrophenol 0.725 ND ND ND 0.000 0.000 2 10.0-121 J6 J6 0.000 40 2-Nitrophenol 0.725 ND ND ND 57.2 57.9 2 12.0-120 0.786 39 4-Nitrophenol 0.725 ND ND ND 46.5 50.8 2 10.0-137 8.37 32 Pentachlorophenol 0.725 ND ND ND 63.1 59.5 2 10.0-160 6.15 31 Phenol 0.725 ND ND ND 54.5 48.2 2 12.0-120 12.6 38 2,4,6-Trichlorophenol 0.725 ND ND ND 62.2 58.5 2 19.0-120 6.50 32 (S)2-Fluoropheno/ 57.7 49.0 12.0-120 (S)Phenol-d5 56.6 56.4 10.0-120 (S)Nitrobenzene-d5 45.5 52.3 10.0-122 (S)2-Fluorobiphenyl 50.0 48.6 15.0-120 (S)2,4,6-Tribromophenol 69.7 61.1 10.0-127 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895603 09/23/25 10:16 46 of 53