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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 05/24/18 11:08 <br /> CFA CT 1 <br /> 1805138-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.654 0.10000 pH Units AT0205 05/23/18 05/23/18 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic 25.4 1.0 mg/kg AT0208 05/23/18 05/23/18 EPA 6010B <br /> Antimony 1.3 1.0 " <br /> Arsenic 25.4 1.0 " <br /> Barium 320 2.0 " <br /> Beryllium ND 0.5 " <br /> Cadmium 1.6 1.0 " <br /> Chromium 33.9 1.0 " <br /> Cobalt 7.5 5.0 " <br /> Copper 117 2.0 " <br /> Lead 43.6 1.0 " <br /> Molybdenum 2.2 1.0 " <br /> Nickel 26.3 1.0 " <br /> Selenium ND 2.0 " <br /> Silver ND 1.0 " <br /> Thallium ND 2.0 <br /> Vanadium 33.9 2.0 " <br /> Zinc 357 2.0 " <br /> Lead 43.6 1.0 " <br /> Mercury 0.021 0.016 AT0188 05/21/18 05/22/18 EPA 7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L AT0209 05/23/18 05/23/18 EPA 6010B <br /> Arsenic 2.5 0.2 " <br /> Barium 6.8 0.4 " <br /> Beryllium ND 0.1 " <br /> Cadmium ND 0.2 " <br /> Chromium 1.0 0.2 " <br /> Cobalt ND 1.0 " <br /> Copper 5.2 0.4 " <br /> Lead 0.4 0.2 " <br /> Molybdenum 0.3 0.2 " <br /> Nickel 0.7 0.2 " <br /> Selenium ND 0.4 <br /> Silver ND 0.4 <br /> Thallium ND 0.4 <br /> Vanadium 0.5 0.4 " <br /> Zinc 20.2 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 2of15 <br />