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WG2599591 QUALITY CONTROL SUMMARY <br /> Pesticides (GC) by Method 8081B L1895744-02 <br /> Method Blank (MB) <br /> (MB)R4274427-1 09/16/25 21:59 C p <br /> MB Result MB Qualifier MB MDL MB RDL PC <br /> Analyte mgA mg/I mgA <br /> Chlordane U 0.00167 0.00500 <br /> Endrin U 0.00167 0.00500 FS <br /> Heptachlor U 0.00133 0.00500 <br /> Lindane U 0.00167 0.00500 Rn <br /> Methoxychlor U 0.00167 0.00500 <br /> Toxaphene U 0.00333 0.0100 <br /> (S)Decochlorobiphenyl 76.4 10.0-128 <br /> FSr <br /> (S)Tetrochloro-m-xylene 27.0 10.0-127 <br /> Laboratory Control Sample (LCS) <br /> (LCS)R4274427-2 09/16/25 22:09 G <br /> Spike Amount LCS Result LCS Rec. Rec.Limits LCS Qualifier <br /> Analyte mg/1 mg/I % % $AI <br /> Endrin 0.0100 0.00869 86.9 57.0-134 <br /> Heptachlor 0.0100 0.00717 71.7 27.0-132 FC <br /> Lindane 0.0100 0.00703 70.3 55.0-129 <br /> Methoxychlor 0.0100 0.00944 94.4 54.0-155 <br /> (S)Decochlorobiphenyl 74.1 10.0-128 <br /> (S)Tetrochloro-m-xylene 19.2 10.0-127 <br /> L1895607-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br /> (OS)L1895607-01 09/16/25 23:06•(MS)R4274427-3 09/16/25 23:16•(MSD)R4274427-4 09/16/25 23:25 <br /> Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec.Limits MS Qualifier MSD Qualifier RPD RPD Limits <br /> Analyte mg/I mg/I mg/I mg/I % % % % % <br /> Endrin 0.0100 ND 0.00802 0.0101 80.2 101 1 10.0-160 23.0 39 <br /> Heptachlor 0.0100 ND 0.00918 0.0109 91.8 109 1 16.0-136 17.1 40 <br /> Lindane 0.0100 ND 0.00753 0.00925 75.3 92.5 1 14.0-141 20.5 40 <br /> Methoxychlor 0.0100 ND 0.00833 0.0106 83.3 106 1 10.0-160 P P 24.0 34 <br /> (S)Decochlorobiphenyl 58.7 72.2 10.0-128 <br /> (S)Tetrochloro-m-xylene 55.9 69.2 10.0-127 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895744 09/23/25 10:17 38 of 53 <br />