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PRM30n TWIRGITC1 <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8105 CERTIFICATE OF ANALYSIS <br /> Page 8 of 18 <br /> Attention: Richard Nelson <br /> UniFirst Corporation <br /> 819 N.Hunter Street <br /> Stockton,CA 95205 <br /> Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Qual Limit Units Level Result %REC Limits RPD Limit <br /> Batch; AD90206-EPA 30506 <br /> Blank(AD90206-BLK1) Prepared&Analyzed:02-Apr-19 <br /> Vanadium ND 0.050 mg/kg <br /> Antimony ND 0.0500 mg/kg <br /> Arsenic ND 0.0500 mg/kg <br /> Barium ND 0.0500 mg/kg <br /> Beryllium ND 0.0500 mg/kg <br /> Cadmium ND 0.0500 mg/kg <br /> Chromium ND 0.0500 mg/kg <br /> Cobalt ND 0.0500 mg/kg <br /> Copper ND 0.0500 mg/kg <br /> Lead ND 0.0500 mg/kg <br /> Mercury ND 0.000200 mg/kg <br /> Molybdenum ND 0.0500 mg/kg <br /> Nickel ND 0.0500 mg/kg <br /> Selenium ND 0.100 mg/kg <br /> Silver ND 0.0500 mg/kg <br /> Thallium ND 0.00200 mg/kg <br /> Zinc ND 0.100 mg/kg <br /> LCS(AD90206-BS1) Prepared&Analyzed:02-Apr-19 <br /> Antimony 0.0492 0.0500 mg/kg 0.0500 98 75-125 <br /> Vanadium 0.049 0.050 mg/kg 0.0500 99 75-125 <br /> Arsenic 0.0506 0.0500 mg/kg 0.0500 101 75-125 <br /> Barium 0.0479 0.0500 mg/kg 0.0500 96 75-125 <br /> Beryllium 0.0535 0.0500 mg/kg 0.0500 107 75-125 <br /> Cadmium 0.0498 0.0500 mg/kg 0.0500 100 75-125 <br /> Chromium 0.0490 0.0500 mg/kg 0.0500 98 75-125 <br /> Cobalt 0.0477 0.0500 mg/kg 0.0500 95 80-120 <br /> Copper 0.0474 0.0500 mg/kg 0.0500 95 75-125 <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 />