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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytical Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" I <br /> bttp://www.mccampbell.com/F.-mail:main r nccampbell.com <br /> Quality Control Report <br /> Client: Castle Analytical Laboratory WorkOrder: 2007226 <br /> Date Prepared: 07/08/2020 BatchID: 201432 <br /> Date Analyzed: 07/09/2020 Extraction Method: E200.8 <br /> Instrument: ICP-MS5 Analytical Method: E200.8 <br /> Matrix: Water Unit: n/L <br /> Project: 2007021;DSL Sample ID: MB/LCS/LCSD-201432 <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 52.1 55.9 50 104 112 85-115 6.96 20 <br /> Arsenic 51.2 51.0 50 102 102 85-115 0.397 20 <br /> Barium 513 532 500 103 106 85-115 3.51 20 <br /> Beryllium 52.9 55.2 50 106 110 85-115 4.34 20 <br /> Cadmium 50.1 51.7 50 100 103 85-115 3.19 20 <br /> Chromium 49.4 50.8 50 99 102 85-115 2.80 20 <br /> Cobalt 51.5 53.6 50 103 107 85-115 4.07 20 <br /> Copper 51.2 52.0 50 103 104 85-115 1.40 20 <br /> Lead 50.7 52.9 50 101 106 85-115 4.26 20 <br /> Mercury 1.19 1.21 1.25 96 97 85-115 1.58 20 <br /> Molybdenum 49.1 53.0 50 98 106 85-115 7.68 20 <br /> Nickel 51.4 52.0 50 103 104 85-115 1.09 20 <br /> Selenium 52.1 52.2 50 104 104 85-115 0.144 20 <br /> Silver 51.4 54.1 50 103 108 85-115 5.23 20 <br /> Thallium 52.5 54.5 50 105 109 85-115 3.62 20 <br /> Vanadium 50.1 50.9 50 100 102 85-115 1.50 20 <br /> Zinc 526 523 500 105 105 85-115 0.545 20 <br /> Surrogate Recovery <br /> Terbium 541 564 500 108 113 70-130 4.19 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 11 of 15 <br />