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Excelchem Laboratories,Inc. <br /> DTE Stockton,LLC Project: 2019 Annual Fly Ash Profiling <br /> 2526 W.Washington St. Project Number: 4701254256 Date Reported: <br /> Stockton,CA 95203 Project Manager: Genny Huffman 04/12/19 16:21 <br /> Fly Ash Truck 3 Sample 1 <br /> 1904034-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.698 0.10000 pH Units A]D0113 04/12/19 04/12/19 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic 28.9 1.0 mg/kg A]D0097 04/10/19 04/10/19 EPA 6010B <br /> Antimony 2.4 0.5 " <br /> Arsenic 28.9 0.5 " <br /> Barium 306 0.5 " <br /> Beryllium ND 0.5 " <br /> Cadmium 1.6 0.5 " <br /> Chromium 32.0 0.5 " <br /> Cobalt 6.7 0.5 " <br /> Copper 196 0.5 " <br /> Lead 46.1 0.5 " <br /> Molybdenum 2.4 0.5 " <br /> Nickel 26.9 0.5 " <br /> Selenium ND 0.5 " <br /> Silver 0.9 0.5 " <br /> Thallium ND 0.5 <br /> Vanadium 30.8 0.5 " <br /> Zinc 396 0.5 " <br /> Lead 46.1 1.0 " <br /> Mercury 0.039 0.016 A]D0085 04/08/19 04/09/19 EPA 7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L A]D0093 04/09/19 04/10/19 EPA6010B <br /> Arsenic 1.6 0.2 " <br /> Barium 4.8 0.4 " <br /> Beryllium ND 0.1 " <br /> Cadmium ND 0.2 " <br /> Chromium 0.8 0.2 " <br /> Cobalt ND 1.0 " <br /> Copper 2.3 0.4 " <br /> Lead 1.1 0.2 " <br /> Molybdenum 0.2 0.2 " <br /> Nickel 0.3 0.2 " <br /> Selenium ND 0.4 <br /> Silver ND 0.4 <br /> Thallium ND 0.4 <br /> Vanadium ND 0.4 <br /> Zinc 11.8 0.4 " <br /> Excelchem Environmental Lab. 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 17 <br />