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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 10 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 /> Duplicate(AD90206-DUP1) Source:9032706-01 Prepared&Analyzed:02-Apr-19 <br /> Antimony ND 0.0500 mg/kg ND 20 <br /> Vanadium 4.43 0.050 mg/kg 4.37 1 20 <br /> Arsenic 1.64 0.0500 mg/kg 1.64 0.08 20 <br /> Barium 43.2 0.0500 mg/kg 42.8 1 20 <br /> Beryllium 0.0975 0.0500 mg/kg 0.105 8 20 <br /> Cadmium 0.0272 0.0500 mg/kg 0.0284 4 20 <br /> Chromium 5.08 0.0500 mg/kg 5.02 1 20 <br /> Cobalt 1.65 0.0500 mg/kg 1.62 1 20 <br /> Copper 3.01 0.0500 mg/kg 2.97 1 20 <br /> Lead 1.76 0.0500 mg/kg 1.77 0.5 20 <br /> Mercury ND 0.00500 mg/kg ND 20 <br /> Molybdenum 0.0349 0.0500 mg/kg 0.0375 7 20 <br /> Nickel 6.15 0.0500 mg/kg 6.13 0.3 20 <br /> Selenium ND 0.100 mg/kg ND 20 <br /> Silver ND 0.0500 mg/kg ND 20 <br /> Thallium ND 0.0500 mg/kg ND 20 <br /> Zinc 9.24 0.100 mg/kg 9.08 2 200 <br /> Matrix Spike(AD90206-MS1) Source:9032706-01 Prepared&Analyzed:02-Apr-19 <br /> Vanadium 6.28 0.050 mg/kg 2.50 4.37 77 75-125 <br /> Antimony 2.57 0.0500 mg/kg 2.50 ND 103 75-125 <br /> Arsenic 4.16 0.0500 mg/kg 2.50 1.64 101 75-125 <br /> Barium 46.4 QM-4X 0.0500 mg/kg 2.50 42.8 143 75-125 <br /> Beryllium 2.36 0.0500 mg/kg 2.50 0.105 90 75-125 <br /> Cadmium 2.53 0.0500 mg/kg 2.50 0.0284 100 75-125 <br /> Chromium 6.93 0.0500 mg/kg 2.50 5.02 77 75-125 <br /> Cobalt 3.35 0.0500 mg/kg 2.50 1.62 69 60-140 <br /> Copper 4.58 0.0500 mg/kg 2.50 2.97 64 60-130 <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 />