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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" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Safety Kleen WorkOrder: 2001811 <br /> Date Prepared: 01/22/2020 BatchID: 192648 <br /> Date Analyzed: 01/22/2020 Extraction Method: SW3050B <br /> Instrument: ICP-MS4 Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/kg <br /> Project: SW10590; SW METALS Sample ID: MB/LCS/LCSD-192648 <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 47 48 50 94 95 75-125 0.781 20 <br /> Arsenic 49 51 50 99 101 75-125 2.42 20 <br /> Barium 500 510 500 100 101 75-125 1.10 20 <br /> Beryllium 50 50 50 99 99 75-125 0 20 <br /> Cadmium 51 51 50 101 103 75-125 0 20 <br /> Chromium 50 50 50 99 101 75-125 0 20 <br /> Cobalt 51 52 50 101 104 75-125 2.46 20 <br /> Copper 49 51 50 98 101 75-125 2.56 20 <br /> Lead 48 49 50 96 99 75-125 2.64 20 <br /> Mercury 1.2 1.2 1.25 94 94 75-125 0 20 <br /> Molybdenum 47 47 50 94 94 75-125 0 20 <br /> Nickel 50 50 50 99 101 75-125 0 20 <br /> Selenium 50 50 50 100 101 75-125 0 20 <br /> Silver 48 50 50 96 100 75-125 4.03 20 <br /> Thallium 49 50 50 98 100 75-125 1.92 20 <br /> Vanadium 50 50 50 99 101 75-125 0 20 <br /> Zinc 510 520 500 101 103 75-125 1.87 20 <br /> Surrogate Recovery <br /> Terbium 500 510 500 99 101 70-130 2.15 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 6 of 10 <br />