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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 Huffinan 04/12/19 16:16 <br /> Fly Ash Truck 1 Sample 1 <br /> 1904032-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.777 0.10000 pH Units A]D0113 04/12/19 04/12/19 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic 13.9 1.0 mg/kg A]D0063 04/08/19 04/09/19 EPA 6010B <br /> Antimony 1.2 0.5 " <br /> Arsenic 13.9 0.5 " <br /> Barium 281 0.5 " <br /> Beryllium ND 0.5 " <br /> Cadmium 0.9 0.5 " <br /> Chromium 33.6 0.5 " <br /> Cobalt 9.2 0.5 " <br /> Copper 99.1 0.5 " <br /> Lead 33.7 0.5 " <br /> Molybdenum 1.8 0.5 " <br /> Nickel 28.7 0.5 " <br /> Selenium ND 0.5 " <br /> Silver ND 0.5 " <br /> Thallium 7.2 0.5 " <br /> Vanadium 48.9 0.5 " <br /> Zinc 264 0.5 " <br /> Lead 33.7 1.0 " <br /> Mercury ND 0.016 A]D0085 04/08/19 04/09/19 EPA7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L A]D0092 04/09/19 04/10/19 EPA 6010B <br /> Arsenic 1.1 0.2 " <br /> Barium 5.1 0.4 " <br /> Beryllium ND 0.1 " <br /> Cadmium ND 0.2 " <br /> Chromium 0.6 0.2 " <br /> Cobalt ND 1.0 " <br /> Copper 2.5 0.4 " <br /> Lead 1.5 0.2 " <br /> Molybdenum ND 0.2 <br /> Nickel 0.4 0.2 " <br /> Selenium ND 0.4 " <br /> Silver ND 0.4 <br /> Thallium ND 0.4 <br /> Vanadium 0.4 0.4 " <br /> Zinc 9.1 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 2of18 <br />