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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: American Integrated Services WorkOrder: 19071339 <br /> Date Prepared: 7/24/19 BatchID: 182261 <br /> Date Analyzed: 7/24/19-7/25/19 Extraction Method: SW3050B <br /> Instrument: ICP-MS2 Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/Kg <br /> Project: 39150; 14800 W. Schulte Rd. Tracy Sample ID: MB/LCS/LCSD-182261 <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 53 57 50 106 114 75-125 7.26 20 <br /> Arsenic 52 55 50 105 109 75-125 4.16 20 <br /> Barium 520 560 500 105 111 75-125 6.03 20 <br /> Beryllium 55 58 50 111 117 75-125 5.41 20 <br /> Cadmium 51 53 50 102 105 75-125 3.01 20 <br /> Chromium 51 52 50 101 104 75-125 2.30 20 <br /> Cobalt 49 52 50 98 104 75-125 5.96 20 <br /> Copper 52 54 50 104 108 75-125 3.96 20 <br /> Lead 51 55 50 103 109 75-125 5.72 20 <br /> Mercury 1.3 1.3 1.25 100 104 75-125 3.68 20 <br /> Molybdenum 50 54 50 100 107 75-125 6.82 20 <br /> Nickel 52 55 50 104 109 75-125 5.08 20 <br /> Selenium 51 53 50 102 106 75-125 3.54 20 <br /> Silver 51 54 50 101 109 75-125 6.97 20 <br /> Thallium 49 52 50 98 103 75-125 5.70 20 <br /> Vanadium 51 52 50 102 104 75-125 2.10 20 <br /> Zinc 520 530 500 103 107 75-125 3.53 20 <br /> Surrogate Recovery <br /> Terbium 520 560 500 105 111 70-130 6.20 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 16 of 22 <br />