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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: Soil Control Lab WorkOrder: 2507A84 <br /> Date Prepared: 07/18/2025 BatchID: 321663 <br /> Date Analyzed: 07/18/2025 Extraction Method: SW3050 B <br /> Instrument: ICP-MS5 Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/kg <br /> Project: 5070102-01;Central Valley Compost(WM- Sample ID: MB/LCS/LCSD-321663 <br /> Lathrop)(Altamont) <br /> QC Summary Report for Metals <br /> Analyte MB MDL RL SPK MB IS/SS MB IS/SS <br /> Result Val %REC Limits <br /> Arsenic ND 0.10 0.50 - <br /> Cadmium ND 0.073 0.50 - <br /> Chromium ND 0.14 0.50 - <br /> Copper ND 0.15 0.50 - <br /> Lead ND 0.11 0.50 - <br /> Mercury ND 0.040 0.050 <br /> Molybdenum ND 0.089 0.50 <br /> Nickel ND 0.25 0.50 <br /> Selenium ND 0.20 0.50 <br /> Zinc ND 1.5 5.0 - - - <br /> Surrogate Recovery <br /> Terbium 550 500 110 70-130 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Arsenic 53 50 50 107 101 75-125 5.78 20 <br /> Cadmium 51 49 50 102 97 75-125 4.83 20 <br /> Chromium 52 50 50 104 100 75-125 4.53 20 <br /> Copper 53 50 50 107 100 75-125 6.13 20 <br /> Lead 49 48 50 99 95 75-125 3.70 20 <br /> Mercury 1.2 1.2 1.25 98 96 75-125 1.73 20 <br /> Molybdenum 50 48 50 99 95 75-125 4.38 20 <br /> Nickel 53 51 50 107 102 75-125 5.02 20 <br /> Selenium 54 51 50 108 102 75-125 5.06 20 <br /> Zinc 530 500 500 105 100 75-125 5.23 20 <br /> Surrogate Recovery <br /> Terbium 530 520 500 106 103 70-130 3.27 20 <br /> CA ELAP 1644.ORELAP(NELAP)4033 <br /> Page 5 of 11 <br />