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AW <br /> 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 /> i <br /> "When Quality Counts" I <br /> http://www.mecampbeH.com/E-mail:main@mccampbefl.com <br /> Quality Control Report <br /> Client: Castle Analytical Laboratory WorkOrder: 2007226 <br /> Date Prepared: 07/06/2020-07/07/2020 BatchID: 201227 <br /> Date Analyzed: 07/08/2020 Extraction Method: E200.8 <br /> Instrument: ICP-MS5 Analytical Method: E200.8 <br /> Matrix: Water Unit: lug/L <br /> Project: 2007021;DSL Sample ID: MB/LCS/LCSD-201227 <br /> QC Report for Metals (>1% Sediment Content) <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Antimony 274 262 250 110 105 85-115 4.49 20 <br /> Arsenic 266 248 250 106 99 85-115 6.80 20 <br /> Barium 2840 2680 2500 114 107 85-115 5.73 20 <br /> Beryllium 276 262 250 111 105 85-115 5.55 20 <br /> Cadmium 266 252 250 106 101 85-115 5.28 20 <br /> Chromium 276 262 250 110 105 85-115 5.17 20 <br /> Cobalt 284 270 250 113 108 85-115 5.05 20 <br /> Copper 266 252 250 107 101 85-115 5.40 20 <br /> Lead 281 257 250 113 103 85-115 8.91 20 <br /> Mercury 5.94 6.24 6.25 95 100 85-115 4.93 20 <br /> Molybdenum 256 260 250 102 104 85-115 1.41 20 <br /> Nickel 266 248 250 106 99 85-115 6.73 20 <br /> Selenium 261 247 250 105 99 85-115 5.66 20 <br /> Silver 286 271 250 115 108 85-115 5.51 20 <br /> Thallium 292 269 250 117,F2 108 85-115 8.34 20 <br /> Vanadium 274 261 250 110 104 85-115 5.10 20 <br /> Zinc 2590 2420 2500 104 97 85-115 6.76 20 <br /> Surrogate Recovery <br /> Terbium 2600 2670 2500 104 107 70-130 2.76 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 9 of 15 <br />