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3 A9H1897 <br /> General <br /> ASSOCIATES <br /> BSK Associates Laboratory Fresno <br /> Metals Quality Control Report <br /> Spike Source %REC RPD .. - <br /> Analyte Result RL Units Level Result %REC Limits RPD Limit Analyzed . . <br /> EPA 6020-Quality Control <br /> Batch:A912104 Prepared:8/16/2019 <br /> Prep Method: EPA 3050B Analyst: MAS <br /> Blank Spike Dup(A912104-BSD1) <br /> Copper 98 5.0 mg/kg 100 ND 98 75-125 2 20 08/18/19 <br /> Lead 94 6.3 mg/kg 100 ND 94 75-125 2 20 08/18/19 <br /> Molybdenum 110 13 mg/kg 100 ND 106 75-125 2 20 08/18/19 <br /> Nickel 100 13 mg/kg 100 ND 105 75-125 1 20 08/18/19 <br /> Selenium 100 2.5 mg/kg 100 ND 100 75-125 1 20 08/18/19 <br /> Silver 49 13 mg/kg 50 ND 97 75-125 2 20 08/18/19 <br /> Thallium 92 2.0 mg/kg 100 ND 92 75-125 2 20 08/18/19 <br /> Vanadium 100 13 mg/kg 100 ND 101 75-125 2 20 08/18/19 <br /> Zinc 98 63 mg/kg 100 ND 98 75-125 4 20 08/18/19 <br /> Matrix Spike(A912104-MSI),Source:A9H1897-01 <br /> Antimony 39 10 mg/kg 100 ND 39 75-125 08/18/19 MS1.0 Low <br /> Arsenic 96 2.5 mg/kg 100 3.7 92 75-125 08/18/19 <br /> Barium 320 6.3 mg/kg 100 220 104 75-125 08/18/19 <br /> Beryllium 100 1.3 mg/kg 100 ND 102 75-125 08/18/19 <br /> Cadmium 97 1.3 mg/kg 100 ND 97 75-125 08/18/19 <br /> Chromium 130 13 mg/kg 100 29 100 75-125 08118/19 <br /> Cobalt 110 13 mg/kg 100 ND 96 75-125 08/18/19 <br /> Copper 150 5.0 mg/kg 100 65 82 75-125 08/18/19 <br /> Lead 130 6.3 mg/kg 100 48 78 75-125 08/18/19 <br /> Molybdenum 87 13 mg/kg 100 ND 87 75-125 08/18/19 <br /> Nickel 140 13 mg/kg 100 35 101 75-125 08/18/19 <br /> Selenium 92 2.5 mg/kg 100 ND 92 75-125 08/18/19 <br /> Silver 46 13 mg/kg 50 ND 92 75-125 08/18/19 <br /> Thallium 85 2.0 mg/kg 100 ND 85 75-125 08/18/19 <br /> Vanadium 140 13 mg/kg 100 38 99 75-125 08/18/19 <br /> Zinc 220 63 mg/kg 100 130 98 75-125 08/18/19 <br /> Matrix Spike Dup(A912104-MSDI),Source:A9H1897-01 <br /> Antimony 36 10 mg/kg 100 ND 36 75-125 7 20 08/18/19 MS1.0 Low <br /> Arsenic 97 2.5 mg/kg 100 3.7 94 75-125 1 20 08/18/19 <br /> Barium 350 6.3 mg/kg 100 220 130 75-125 8 20 08/18/19 MS1.0 High <br /> Beryllium 110 1.3 mg/kg 100 ND 106 75-125 3 20 08/18/19 <br /> Cadmium 100 1.3 mg/kg 100 ND 100 75-125 3 20 08/18/19 <br /> Chromium 130 13 mg/kg 100 29 104 75-125 3 20 08/18/19 <br /> Cobalt 110 13 mg/kg 100 ND 99 75-125 2 20 08/18/19 <br /> Copper 200 5.0 mg/kg 100 65 134 75-125 30 20 08/18/19 MS1.0 High <br /> MS2.1 <br /> Lead 130 6.3 mg/kg 100 48 84 75-125 4 20 08/18/19 <br /> Molybdenum 88 13 mg/kg 100 ND 88 75-125 1 20 08/18/19 <br /> Nickel 140 13 mg/kg 100 35 105 75-125 3 20 08/18/19 <br /> Selenium 94 2.5 mg/kg 100 ND 94 75-125 2 20 08/18/19 <br /> Silver 47 13 mg/kg 50 ND 93 75-125 2 20 08/18/19 <br /> The results in this report apply to the samples analyzed in A9H1897 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 6 of 16 <br />