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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.mccampbefl.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Graben,Inc. WorkOrder: 1905831 <br /> Date Prepared: 5/15/19 BatchID: 177947 <br /> Date Analyzed: 5/16/19 Extraction Method: SW3050B <br /> Instrument: ICP-MSI Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/Kg <br /> Project: 250 Catalpa Sample ID: MB/LCS/LCSD-177947 <br /> QC Summary Report for Metals <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> Antimony ND 0.094 0.50 - - - <br /> Arsenic ND 0.14 0.50 - - - <br /> Barium ND 0.97 5.0 - - - <br /> Beryllium ND 0.072 0.50 - - - <br /> Cadmium ND 0.058 0.25 - - - <br /> Chromium ND 0.092 0.50 - - - <br /> Cobalt ND 0.056 0.50 - - - <br /> Copper ND 0.069 0.50 - - - <br /> Lead ND 0.094 0.50 - - - <br /> Mercury 0.0055,J 0.0050 0.050 - - - <br /> Molybdenum ND 0.23 0.50 - - - <br /> Nickel ND 0.072 0.50 - - - <br /> Selenium ND 0.13 0.50 - - - <br /> Silver ND 0.055 0.50 - - - <br /> Thallium ND 0.10 0.50 - - - <br /> Vanadium ND 0.064 0.50 - - - <br /> Zinc ND 1.4 5.0 - - - <br /> Surrogate Recovery <br /> Terbium 540 500 108 70-130 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 7 of 14 <br />