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WG2597763 QUALITY CONTROL SUMMARY Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1895603-01 Laboratory Control Sample (LCS) (LCS)R4274976-1 09/15/2511:10 C p Spike Amount LCS Result LCS Rec. Rec.Limits LCS Qualifier z Analyte mg/kg mg/kg % % TC 2-Nitrophenol 0.666 0.422 63.4 20.0-120 4-Nitrophenol 0.666 0.413 62.0 27.0-120 FS Pentachlorophenol 0.666 0.506 76.0 29.0-120 Phenol 0.666 0.377 56.6 28.0-120 Rn 2,4,6-Trichlorophenol 0.666 0.447 67.1 37.0-120 (S)2-Fluoropheno/ 65.2 12.0-120 (S)Phenol-d5 58.4 10.0-120 FSr (S)Nitrobenzene-d5 44.1 10.0-122 (S)2-Fluorobiphenyl 54.1 15.0-120 (S)2,4,6-Tribromophenol 78.5 10.0-127 (S)p-Terphenyl-d14 60.4 10.0-120 �GI L1895458-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS)L1895458-01 09/15/2518:42•(MS)R4274976-3 09/15/2519:05•(MSD)R4274976-4 09/15/2519:29 gAl 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 9 Analyte mg/kg mg/kg mg/kg mg/kg %_ % % % % SC Acenaphthene 0.725 ND 0.358 0.344 49.4 47.6 2 18.0-120 4.04 32 Acenaphthylene 0.725 ND 0.356 0.332 49.1 45.9 2 25.0-120 6.98 32 Anthracene 0.725 ND 0.411 0.383 56.6 53.0 2 22.0-120 6.88 29 Benzidine 1.33 ND ND ND 0.000 0.000 2 10.0-120 J6 J6 0.000 40 Benzo(a)anthracene 0.725 ND 0.425 0.393 58.6 54.4 2 25.0-120 7.74 29 Benzo(b)fluoranthene 0.725 ND 0.423 0.411 58.3 56.8 2 19.0-122 2.88 31 Benzo(k)fluoranthene 0.725 ND 0.396 0.397 54.7 55.0 2 23.0-120 0.275 30 Benzo(g,h,i)perylene 0.725 ND 0.311 0.255 42.9 35.3 2 10.0-120 19.7 33 Benzo(a)pyrene 0.725 ND 0.415 0.386 57.2 53.5 2 24.0-120 7.08 30 Bis(2-chlorethoxy)methane 0.725 ND ND ND 47.6 51.5 2 10.0-120 7.61 34 Bis(2-chloroethyl)ether 0.725 ND ND ND 70.9 60.0 2 10.0-120 17.1 40 2,2-Oxybis(1-Chloropropane) 0.725 ND ND ND 48.6 43.8 2 10.0-120 10.8 40 4-Bromophenyl-phenylether 0.725 ND ND ND 56.3 52.7 2 27.0-120 6.92 30 2-Chloronaphthalene 0.725 ND 0.316 0.322 43.5 44.6 2 20.0-120 2.05 32 4-Chlorophenyl-phenylether 0.725 ND ND ND 46.2 58.3 2 24.0-120 22.8 29 Chrysene 0.725 ND 0.424 0.388 58.4 53.6 2 21.0-120 8.88 29 Dibenz(a,h)anthracene 0.725 ND 0.346 0.296 47.7 40.9 2 10.0-120 15.6 32 1,2-Dichlorobenzene 0.725 ND ND ND 48.0 43.4 2 10.0-120 10.6 38 1,3-Dichlorobenzene 0.725 ND ND ND 45.6 42.3 2 10.0-120 7.89 40 1,4-Dichlorobenzene 0.725 ND ND ND 46.4 42.3 2 10.0-120 9.52 39 3,3-Dichlorobenzidine 1.45 ND ND ND 38.3 40.4 2 10.0-120 4.61 34 2,4-Dinitrotoluene 0.725 ND ND ND 47.3 51.2 2 30.0-120 7.66 31 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895603 09/23/25 10:16 45 of 53