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McCampbell Analytical, Inc. <br />W'Atf "When Quality Counts" <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />http://www.mccampbell.com / E-mail: main@mccampbell.com <br /> <br />Quality Control Report <br />Client: US Ecology <br />Date Prepared: 07/14/2022 <br />Date Analyzed: 07/15/2022 <br />Instrument: ICP-MS5 <br />Matrix: Soil <br />Project: 180641; Alpine Helicopter <br />WorkOrder: 2207760 <br />BatchID: 249575 <br />Extraction Method: SW3050B <br />Analytical Method: SW6Q20 <br />Unit: mg/kg <br />Sample ID: MB/LCS/LCSD-249575 <br />QC Summary Report for Metals <br />Analyte MB <br />Result <br />MDL RL SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />Antimony ND 0.16 0.50 <br />Arsenic ND 0.14 0.50 <br />Barium ND 0.68 5.0 <br />Beryllium ND 0.083 0.50 <br />Cadmium ND 0.094 0.50 <br />Chromium ND 0.13 0.50 <br />Cobalt ND 0.069 0.50 <br />Copper 0.43,J 0.23 0.50 <br />Lead ND 0.069 0.50 <br />Mercury ND 0.038 0.050 <br />Molybdenum ND 0.14 0.50 <br />Nickel ND 0.081 0.50 <br />Selenium ND 0.32 0.50 <br />Silver ND 0.11 0.50 <br />Thallium ND 0.072 0.50 <br />Vanadium ND 0.15 0.50 <br />Zinc ND 3.2 5.0 <br />Surrogate Recovery <br />Terbium 560 500 112 70-130 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 21 of 29