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Excelchem Laboratories,Inc. <br /> DTE Stockton,LLC Project: 2020 Annual Fly Ash Profiling <br /> 2526 W.Washington St. Project Number: 4700995195 Date Reported: <br /> Stockton,CA 95203 Project Manager: Genny Huffman 04/10/20 21:51 <br /> Fly Ash Truck 4,Sample 1 <br /> 2004049-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.460 0.10000 pH Units A^D0071 04/10/20 04/10/20 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic 13.3 1.0 mg/kg A^D0044 04/08/20 04/10/20 EPA 6010B <br /> Antimony 1.9 0.5 " <br /> Arsenic 13.3 0.5 " <br /> Barium 340 0.5 " <br /> Beryllium ND 0.5 " <br /> Cadmium 0.8 0.5 " <br /> Chromium 27.1 0.5 " <br /> Cobalt 7.1 0.5 " <br /> Copper 111 0.5 " <br /> Lead 25.0 0.5 " <br /> Molybdenum 1.9 0.5 " <br /> Nickel 21.8 0.5 " <br /> Selenium ND 0.5 " <br /> Silver ND 0.5 " <br /> Thallium ND 0.5 " <br /> Vanadium 34.6 0.5 " <br /> Zinc 243 0.5 " <br /> Copper 111 2.0 " <br /> Lead 25.0 1.0 " <br /> Mercury 0.040 0.016 " A^D0068 04/10/20 04/10/20 EPA 7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L A^D0067 04/09/20 04/10/20 EPA 6010B <br /> Arsenic 0.8 0.2 " " <br /> Barium 5.0 0.4 " " <br /> Beryllium ND 0.1 " " <br /> Cadmium ND 0.2 " " <br /> Chromium 0.4 0.2 " " <br /> Cobalt ND 1.0 " <br /> Copper 1.6 0.4 " <br /> Lead 0.2 0.2 " <br /> Molybdenum ND 0.2 <br /> Nickel 0.2 0.2 " <br /> Selenium ND 0.4 <br /> Silver ND 0.4 <br /> Thallium ND 0.4 <br /> Vanadium ND 0.4 " <br /> Excelchem Laboratories.Tnc. The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Laboratory Representative Page 2 of 19 <br />