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A9H1897 <br /> Ek� - , General <br /> ASSOCIATES <br /> BSK Associates Laboratory Fresno <br /> Metals Quality Control Report <br /> Spike Source %REC • Date <br /> Analyte Result RL Units Level Result %REC Limits RPD Limit Analyzed Qual <br /> EPA 6020-Quality Control <br /> Batch:A912104 Prepared:8/16/2019 <br /> Prep Method: EPA 3050B Analyst: MAS <br /> Blank(A912104-BLK1) <br /> Antimony ND 10 mg/kg 08/18/19 <br /> Arsenic ND 2.5 mg/kg 08/18/19 <br /> Barium ND 6.3 mg/kg 08/18/19 <br /> Beryllium ND 1.3 mg/kg 08/18/19 <br /> Cadmium ND 1.3 mg/kg 08/18/19 <br /> Chromium ND 13 mg/kg 08/18/19 <br /> Cobalt ND 13 mg/kg 08/18/19 <br /> Copper ND 5.0 mg/kg 08/18/19 <br /> Lead ND 6.3 mg/kg 08/18/19 <br /> Molybdenum ND 13 mg/kg 08/18/19 <br /> Nickel ND 13 mg/kg 08/18/19 <br /> Selenium ND 2.5 mg/kg 08/18/19 <br /> Silver ND 13 mg/kg 08/18/19 <br /> Thallium ND 2.0 mg/kg 08/18/19 <br /> Vanadium ND 13 mg/kg 08/18/19 <br /> Zinc ND 63 mg/kg 08/18/19 <br /> Blank Spike(A912104-BS1) <br /> Antimony 110 10 mg/kg 100 ND 106 75-125 08/18/19 <br /> Arsenic 100 2.5 mg/kg 100 ND 100 75-125 08/18/19 <br /> Barium 100 6.3 mg/kg 100 ND 100 75-125 08/18/19 <br /> Beryllium 110 1.3 mg/kg 100 ND 106 75-125 08/18/19 <br /> Cadmium 100 1.3 mg/kg 100 ND 101 75-125 08/18/19 <br /> Chromium 100 13 mg/kg 100 ND 102 75-125 08118/19 <br /> Cobalt 100 13 mg/kg 100 ND 101 75-125 08/18/19 <br /> Copper 100 5.0 mg/kg 100 ND 100 75-125 08/18/19 <br /> Lead 96 6.3 mg/kg 100 ND 96 75-125 08118119 <br /> Molybdenum 110 13 mg/kg 100 ND 109 75-125 08118/19 <br /> Nickel 100 13 mg/kg 100 ND 103 75-125 08/18/19 <br /> Selenium 100 2.5 mg/kg 100 ND 101 75-125 08/18/19 <br /> Silver 50 13 mg/kg 50 ND 99 75-125 08/18/19 <br /> Thallium 93 2.0 mg/kg 100 ND 93 75-125 08/18/19 <br /> Vanadium 100 13 mg/kg 100 ND 103 75-125 08/18/19 <br /> Zinc 100 63 mg/kg 100 ND 102 75-125 08/18/19 <br /> Blank Spike Dup(A912104-BSD1) <br /> Antimony 110 10 mg/kg 100 ND 106 75-125 1 20 08/18/19 <br /> Arsenic 99 2.5 mg/kg 100 ND 99 75-125 2 20 08/18/19 <br /> Barium 100 6.3 mg/kg 100 ND 102 75-125 2 20 08/18/19 <br /> Beryllium 110 1.3 mg/kg 100 ND 105 75-125 1 20 08/18/19 <br /> Cadmium 100 1.3 mg/kg 100 ND 102 75-125 0 20 08/18/19 <br /> Chromium 100 13 mg/kg 100 ND 100 75-125 1 20 08/18/19 <br /> Cobalt 100 13 mg/kg 100 ND 101 75-125 1 20 08/18/19 <br /> The results in this report apply to the samples analyzed in A91-11897 FINAL 08232019 1359 <br /> accordance with the chain of custody document. This <br /> analytical report must be reproduced in its entirety. <br /> www.BSKAssociates.com Page 5 of 16 <br />