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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: 25061392 <br /> Date Prepared: 06/19/2025 BatchID: 319627 <br /> Date Analyzed: 06/19/2025 Extraction Method: SW3050 B <br /> Instrument: ICP-MS4 Analytical Method: SW6020 <br /> Matrix: Soil Unit: mg/kg <br /> Project: 5060123-01;Central Valley Compost(WM- Sample ID: MB/LCS/LCSD-319627 <br /> Lathrop)(Altamont) 2506B92-001AMS/MSD <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 /> Arsenic 51 48 50 102 96 75-125 6.04 20 <br /> Cadmium 50 49 50 101 97 75-125 3.73 20 <br /> Chromium 52 50 50 104 99 75-125 4.55 20 <br /> Copper 54 50 50 108 100 75-125 7.73 20 <br /> Lead 51 49 50 101 98 75-125 3.24 20 <br /> Mercury 1.2 1.1 1.25 96 92 75-125 5.11 20 <br /> Molybdenum 49 46 50 98 92 75-125 6.45 20 <br /> Nickel 52 50 50 105 100 75-125 5.11 20 <br /> Selenium 51 48 50 103 96 75-125 6.46 20 <br /> Zinc 520 490 500 104 98 75-125 6.03 20 <br /> Surrogate Recovery <br /> Terbium 560 530 500 111 105 70-130 5.96 20 <br /> Analyte MS MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> DF Result Result Val Val %REC %REC Limits Limit <br /> Arsenic 1 460 450 471.7 ND<4.0 97 100 75-125 1.56 20 <br /> Cadmium 1 460 430 471.7 ND<4.0 98 96 75-125 6.71 20 <br /> Chromium 1 510 480 471.7 37.38 101 99 75-125 5.91 20 <br /> Copper 1 530 520 471.7 66.92 98 101 75-125 1.13 20 <br /> Lead 1 490 480 471.7 35.40 97 98 75-125 3.84 20 <br /> Mercury 1 11 11 11.79 ND<0.40 95 96 75-125 3.44 20 <br /> Molybdenum 1 450 420 471.7 ND<4.0 94 94 75-125 4.84 20 <br /> Nickel 1 500 490 471.7 27.62 101 103 75-125 2.38 20 <br /> Selenium 1 460 450 471.7 ND<4.0 97 99 75-125 2.80 20 <br /> Zinc 1 4900 4700 4717 210.0 99 100 75-125 3.75 20 <br /> Surrogate Recovery <br /> Terbium 1 5000 4800 4717 107 107 70-130 4.59 20 <br /> Analyte DLT DLTRef %D %D <br /> Result Val Limit <br /> Arsenic ND<20 ND <br /> Cadmium ND<20 ND - - <br /> Chromium 34 37 7.96 20 <br /> Copper 65 67 3.11 20 <br /> (Cont.) <br /> CA ELAP 1644.ORELAP(NELAP)4033 <br /> Page 6 of 12 <br />