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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: #4701180998 Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 02/20/18 17:00 <br /> BA CT 1 <br /> 1802122-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.588 0.10000 pH Units A\B0198 02/19/18 02/19/18 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic ND 1.0 mg/kg A\B0208 02/20/18 02/20/18 EPA 6010B <br /> Antimony ND 1.0 <br /> Arsenic ND 1.0 <br /> Barium 146 2.0 " <br /> Beryllium ND 0.5 " <br /> Cadmium ND 1.0 " <br /> Chromium 12.0 1.0 " <br /> Cobalt 5.1 5.0 " <br /> Copper 46.5 2.0 " <br /> Lead 1.5 1.0 " <br /> Molybdenum ND 1.0 " <br /> Nickel 11.8 1.0 " <br /> Selenium ND 2.0 <br /> Silver ND 1.0 <br /> Thallium ND 2.0 <br /> Vanadium 21.2 2.0 " <br /> Zinc 22.5 2.0 " <br /> Lead 1.5 1.0 " <br /> Mercury ND 0.016 A\B0183 02/19/18 02/19/18 EPA7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L A\B0196 02/19/18 02/20/18 EPA 6010B <br /> Arsenic ND 0.2 <br /> Barium 5.0 0.4 " <br /> Beryllium ND 0.1 " <br /> Cadmium ND 0.2 " <br /> Chromium 0.3 0.2 " <br /> Cobalt ND 1.0 <br /> Copper 1.5 0.4 " <br /> Lead 0.3 0.2 " <br /> Molybdenum ND 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 0.4 0.4 " <br /> Zinc 0.9 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 /> b_ <br /> Laboratory Representative Page 2of15 <br />