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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:5070102-01; Central Valley Compost (WM- <br />Lathrop) (Altamont) <br />Date Received:07/16/2025 9:20 <br />Date Prepared:07/18/2025 <br />WorkOrder:2507A84 <br />Extraction Method:SW3050 B <br />Analytical Method:SW6020 <br />Unit:mg/kg-dry <br />Metals <br />17, 18, 19, 20 2507A84-001A Solid 07/08/2025 08:30 ICP-MS5 180SMPL.d 321663 <br />Analytes Result DF Date AnalyzedRL <br />Client ID Lab ID Matrix Date Collected Instrument Batch ID <br />Arsenic ND 5.3 1 07/21/2025 18:58 <br />Cadmium ND 5.3 1 07/21/2025 18:58 <br />Chromium 35 5.3 1 07/21/2025 18:58 <br />Copper 44 5.3 1 07/21/2025 18:58 <br />Lead 17 5.3 1 07/21/2025 18:58 <br />Mercury ND 0.53 1 07/21/2025 18:58 <br />Molybdenum ND 5.3 1 07/21/2025 18:58 <br />Nickel 27 5.3 1 07/21/2025 18:58 <br />Selenium ND 5.3 1 07/21/2025 18:58 <br />Zinc 150 53 1 07/21/2025 18:58 <br />Surrogates REC (%)Limits <br />Analytical Comments:a14Analyst(s):WV <br />DF <br />Terbium 109 70-130 07/21/2025 18:581 <br />CA ELAP 1644 • ORELAP (NELAP) 4033 <br />Page 4 of 11