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PRM30n TWIRGITC1 <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8105 CERTIFICATE OFANALYSIS <br /> Page 11 of 18 <br /> Attention: Richard Nelson <br /> UniFirst Corporation <br /> 819 N.Hunter Street <br /> Stockton,CA 95205 <br /> Quality Control <br /> (Continued) <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Qual Limit Units Level Result %REC Limits RPD Limit <br /> Batch; AD90206-EPA 30505(Continued) <br /> Matrix Spike(AD90206-MSI) Source:9032706-01 Prepared&Analyzed:02-Apr-19 <br /> Lead 4.22 0.0500 mg/kg 2.50 1.77 98 75-125 <br /> Mercury 0.118 0.00500 mg/kg 0.125 ND 94 75-125 <br /> Molybdenum 2.60 0.0500 mg/kg 2.50 0.0375 102 75-125 <br /> Nickel 7.91 0.0500 mg/kg 2.50 6.13 71 60-125 <br /> Selenium 2.68 0.100 mg/kg 2.50 ND 107 75-125 <br /> Silver 2.85 0.0500 mg/kg 2.50 ND 114 75-125 <br /> Thallium 2.44 0.0500 mg/kg 2.50 ND 98 75-125 <br /> Zinc 11.0 0.100 mg/kg 2.50 9.08 79 75-125 <br /> Matrix Spike Dup(AD90206-MSD1) Source:9032706-01 Prepared&Analyzed:02-Apr-19 <br /> Antimony 2.58 0.0500 mg/kg 2.50 ND 103 75-125 0.1 20 <br /> Vanadium 6.30 0.050 mg/kg 2.50 4.37 77 75-125 0.3 20 <br /> Arsenic 4.19 0.0500 mg/kg 2.50 1.64 102 75-125 0.8 20 <br /> Barium 47.2 QM-4X 0.0500 mg/kg 2.50 42.8 177 75-125 2 20 <br /> Beryllium 2.32 0.0500 mg/kg 2.50 0.105 89 75-125 2 20 <br /> Cadmium 2.53 0.0500 mg/kg 2.50 0.0284 100 75-125 0.2 20 <br /> Chromium 6.94 0.0500 mg/kg 2.50 5.02 77 75-125 0.05 20 <br /> Cobalt 3.35 0.0500 mg/kg 2.50 1.62 69 60-140 0.2 20 <br /> Copper 4.60 0.0500 mg/kg 2.50 2.97 65 60-130 0.5 20 <br /> Lead 4.23 0.0500 mg/kg 2.50 1.77 98 75-125 0.2 20 <br /> Mercury 0.121 0.00500 mg/kg 0.125 ND 97 75-125 3 20 <br /> Molybdenum 2.60 0.0500 mg/kg 2.50 0.0375 102 75-125 0.1 20 <br /> Nickel 7.94 0.0500 mg/kg 2.50 6.13 72 60-125 0.4 20 <br /> Selenium 2.69 0.100 mg/kg 2.50 ND 108 75-125 0.3 20 <br /> Silver 2.84 0.0500 mg/kg 2.50 ND 114 75-125 0.2 20 <br /> Thallium 2.45 0.0500 mg/kg 2.50 ND 98 75-125 0.4 20 <br /> Zinc 11.1 0.100 mg/kg 2.50 9.08 79 75-125 0.1 20 <br /> The contents of this report apply to the samples)analyzed in accordance with the chain of custody document. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan H.V.Le,Laboratory Director <br /> FLAP No. 2387 email:ihvle(&Petallab.com Web:petallab.com Phone: (209) 477-8105 <br />