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Analytical Report <br />McCampbell Analytical, Inc.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"When Quality Counts" <br />Client:Soil Control Lab <br />Project:5070418-01; Central Valley Compost (WM- <br />Lathrop)(Altamont) <br />Date Received:08/06/2025 7:42 <br />Date Prepared:08/08/2025 <br />WorkOrder:2508407 <br />Extraction Method:SW3050 B <br />Analytical Method:SW6020 <br />Unit:mg/kg-dry <br />Metals <br />25,26,27,28 2508407-001A Solid 07/28/2025 07:00 ICP-MS6 109SMPL.d 323199 <br />Analytes Result DF Date AnalyzedRL <br />Client ID Lab ID Matrix Date Collected Instrument Batch ID <br />Arsenic ND 5.1 1 08/11/2025 10:42 <br />Cadmium ND 5.1 1 08/11/2025 10:42 <br />Chromium 25 5.1 1 08/11/2025 10:42 <br />Copper 68 5.1 1 08/11/2025 10:42 <br />Lead 28 5.1 1 08/11/2025 10:42 <br />Mercury ND 0.51 1 08/11/2025 10:42 <br />Molybdenum ND 5.1 1 08/11/2025 10:42 <br />Nickel 21 5.1 1 08/11/2025 10:42 <br />Selenium ND 5.1 1 08/11/2025 10:42 <br />Zinc 210 51 1 08/11/2025 10:42 <br />Surrogates REC (%)Limits <br />Analytical Comments:a14Analyst(s):AL <br />DF <br />Terbium 102 70-130 08/11/2025 10:421 <br />CA ELAP 1644 • ORELAP (NELAP) 4033 <br />Page 4 of 11