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*40, McCampbell Analytical, Inc. <br />"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: Fremouw Environmental Services, Inc. <br />Date Prepared: 06/10/2021 <br />Date Analyzed: 06/10/2021 - 06/11/2021 <br />Instrument: ICP-M54, ICP-MS5 <br />Matrix: Soil <br />Project: Tracy <br />WorkOrder: 2106674 <br />BatchID: 223171 <br />Extraction Method: SW3050B <br />Analytical Method: SW6020 <br />Unit: mg/kg <br />Sample ID: MB/LCS/LCSD-223171 <br />QC Summary Report for Metals <br />Analyte LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />YoREC <br />LCSD <br />VoREC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />Antimony 51.4 50.4 50 103 101 75-125 1.93 20 <br />Arsenic 51.8 50.7 50 104 101 75-125 2.09 20 <br />Barium 490 484 500 98 97 75-125 1.04 20 <br />Beryllium 48.8 48.3 50 98 97 75-125 0.996 20 <br />Cadmium 50.0 49.2 50 100 98 75-125 1.75 20 <br />Chromium 49.6 48.6 50 99 97 75-125 1.90 20 <br />Cobalt 49.1 49.4 50 98 99 75-125 0.637 20 <br />Copper 49.8 49.5 50 100 99 75-125 0.751 20 <br />Lead 51.4 50.6 50 103 101 75-125 1.71 20 <br />Mercury 1.18 1.17 1.25 94 94 75-125 0.852 20 <br />Molybdenum 47.9 48.5 50 96 97 75-125 1.29 20 <br />Nickel 50.0 49.9 50 100 100 75-125 0.236 20 <br />Selenium 51.6 50.2 50 103 101 75-125 2.55 20 <br />Silver 50.5 50.7 50 101 101 75-125 0.375 20 <br />Thallium 53.9 52.2 50 108 104 75-125 3.23 20 <br />Vanadium 49.9 49.1 50 100 98 75-125 1.49 20 <br />Zinc 504 498 500 101 100 75-125 1.18 20 <br />Surrogate Recovery <br />Terbium 506 484 500 101 97 70-130 4.53 20 <br />CA ELM 1644 • NELAP 40330RELAP <br />Page 8 of 14