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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br /> McCampbell Analytical , Inc . Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br /> "When Quality Counts" bap://www.inccampbell.min / E-mail: mQ <br /> ainnccampbell.mm <br /> Quality Control Report <br /> Client: CVE Demolition WorkOrder: 1912750 <br /> Date Prepared: 12/13/19 BatchlD: 190559 <br /> Date Analyzed: 12/13/19 - 12/14/19 Extraction Method: SW3050B <br /> Instrument: ICP-MS4 Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/kg <br /> Project: D17124; West Side Market Sample ID: MB/LCS/LCSD- 190559 <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 39 42 50 77 83 75-125 7.20 20 <br /> Arsenic 42 45 50 84 90 75-125 6.63 20 <br /> Barium 420 430 500 84 87 75-125 3.55 20 <br /> Beryllium 40 42 50 81 85 75-125 4.77 20 <br /> Cadmium 40 43 50 80 85 75-125 6.99 20 <br /> Chromium 42 45 50 84 89 75-125 6.67 20 <br /> Cobalt 42 44 50 83 89 75-125 6.17 20 <br /> Copper 42 45 50 85 90 75-125 5.32 20 <br /> Lead 40 41 50 79 83 75-125 4.43 20 <br /> Mercury 1 .0 1 .1 1 .25 80 87 75-125 8.18 20 <br /> Molybdenum 41 44 50 82 88 75-125 7.83 20 <br /> Nickel 43 45 50 86 90 75-125 4.45 20 <br /> Selenium 42 45 50 84 89 75-125 6.57 20 <br /> Silver 39 40 50 78 81 75-125 3.85 20 <br /> Thallium 38 39 50 75 79 75-125 4.62 20 <br /> Vanadium 42 44 50 83 88 75-125 5.90 20 <br /> Zinc 420 440 500 84 89 75-125 5.47 20 <br /> Surrogate Recovery <br /> Terbium 440 470 500 88 94 70-130 7.02 20 <br /> CA ELAP 1644 • NELAP 4033ORELAP <br /> Page 28 of 34 <br />