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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> McCampbeIIAnal tical,- Inc. Toll Free Telephone:(877)252-9262/Fwx:(925)252-9269 <br /> — "W/ten Quality COUflfS" bttplAvww.mccnmpbell.com 1 E-mail:main n nccampbell.com <br /> Quality Control Report <br /> Client: Castle Analytical Laboratory WorkOrder: 1901308 <br /> Date Prepared: 1/8/19 EatchID: 171078 <br /> Date Analyzed: 1/8/19 Extraction Method: E200.8 <br /> Instrument: ICP-MS3 Analytical Method: E200.8 <br /> Matrix: Water Unit: µg/L <br /> Project: 1901020;Value Products Sample ID: MB/LCS/LCSD-171078 <br /> QC Summary Report for Metals <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Antimony 57 55 50 114 111 85-115 2.64 20 <br /> Arsenic 53 52 50 107 105 85-115 2.02 20 <br /> Barium 550 530 500 109 106 85-115 3.02 20 <br /> Beryllium 54 53 50 107 105 85-115 2.18 20 <br /> Cadmium 53 52 50 106 104 85-115 2.17 20 <br /> Chromium 53 52 50 107 104 85-115 2.70 20 <br /> Cobalt 52 50 u 50 104 101 85-115 2.68 20 <br /> Copper 54 52 50 108 105 85-115 3.19 20 <br /> Lead 53 52 50 106 103 85-115 2.83 20 <br /> Mercury 1.3 1.2 1.25 103 100 85-115 3.62 20 <br /> Molybdenum 50 49 50 101 99 85-115 2.07 20 <br /> Nickel 54 53 50 108 106 85-115 1.90 20 <br /> Selenium 54 53 50 109 106 85-115 3.00 20 <br /> Silver 52 50 50 104 101 85-115 2.74 20 <br /> Thallium �i 53 52 50 107 103 85-115 3.35 20 <br /> Vanadium 53 52 50 106 103 85-115 2.65 20 <br /> Zinc 540 530 500 108 106 85-115 2.67 20 <br /> Surrogate Recovery <br /> Terbium 520 510 500 105 102 70-130 2.63 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 7 of 12 <br />