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WG2596905 QUALITY CONTROL SUMMARY <br /> Metals (ICP) by Method 6010D L1895603-02 <br /> Method Blank (MB) Ed <br /> (MB)R4271015-1 09/09/2516:00 <br /> MB Result MB Qualifier MB MDL MB RDL PC <br /> Analyte mgA mgA mg/1 <br /> Arsenic U 0.0333 0.100 <br /> Barium U 0.0333 0.100 FS <br /> Cadmium U 0.0333 0.100 <br /> Chromium U 0.0333 0.100 Rn <br /> Lead U 0.0333 0.100 <br /> Selenium U 0.0333 0.100 <br /> Silver U 0.0333 0.100 FSr <br /> Laboratory Control Sample (LCS) <br /> (LCS)R4271015-2 09/09/2516:02 <br /> Spike Amount LCS Result LCS Rec. Rec.Limits LCS Qualifier 7G1 <br /> Analyte mg/I mg/I % % <br /> Arsenic 10.0 9.59 95.9 80.0-120 $AI <br /> Barium 10.0 9.57 95.7 80.0-120 <br /> Cadmium 10.0 9.05 90.5 80.0-120 <br /> Fc <br /> Chromium 10.0 9.70 97.0 80.0-120 <br /> Lead 10.0 9.21 92.1 80.0-120 <br /> Selenium 10.0 9.61 96.1 80.0-120 <br /> Silver 2.00 1.78 89.1 80.0-120 <br /> L1895776-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br /> (OS)L1895776-01 09/09/2516:04•(MS)R4271015-4 09/09/2516:08•(MSD)R4271015-5 09/09/2516:09 <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/1 mg/I % % % % % <br /> Arsenic 10.0 ND 9.57 9.88 95.7 98.8 1 75.0-125 3.23 20 <br /> Barium 10.0 ND 9.51 9.75 94.3 96.7 1 75.0-125 2.54 20 <br /> Cadmium 10.0 ND 9.10 9.27 91.0 92.7 1 75.0-125 1.87 20 <br /> Chromium 10.0 ND 9.61 9.89 96.1 98.9 1 75.0-125 2.93 20 <br /> Lead 10.0 0.696 9.78 10.0 90.9 93.3 1 75.0-125 2.45 20 <br /> Selenium 10.0 ND 9.59 9.84 95.9 98.4 1 75.0-125 2.55 20 <br /> Silver 2.00 ND 1.77 1.85 88.3 92.3 1 75.0-125 4.42 20 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> UniFirst Corporation-Wilmington,MA UNIFIRST 370-CA L1895603 09/23/25 10:16 26 of 53 <br />