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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: #7401180998 Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 05/17/18 18:25 <br /> CFA CT 1 <br /> 1805096-01(Soil) <br /> Reporting Date Date <br /> Analyte Result Limit Units Batch Prepared Analyzed Method Notes <br /> Wet Chemistry <br /> pH 12.726 0.10000 pH Units AT0142 05/17/18 05/17/18 EPA 9040B <br /> Total Recoverable Metals <br /> Arsenic 11.2 1.0 mg/kg AT0129 05/16/18 05/16/18 EPA 6010B <br /> Antimony 1.4 1.0 " <br /> Arsenic 11.2 1.0 " <br /> Barium 355 2.0 " <br /> Beryllium ND 0.5 " <br /> Cadmium ND 1.0 " <br /> Chromium 32.0 1.0 " <br /> Cobalt 7.8 5.0 " <br /> Copper 82.4 2.0 " <br /> Lead 26.4 1.0 " <br /> Molybdenum 1.5 1.0 " <br /> Nickel 25.1 1.0 " <br /> Selenium ND 2.0 " <br /> Silver ND 1.0 " <br /> Thallium ND 2.0 " <br /> Vanadium 41.2 2.0 " <br /> Zinc 189 2.0 " <br /> Lead 26.4 1.0 " <br /> Mercury ND 0.016 ATO 121 05/15/18 05/15/18 EPA7471A <br /> STLC Metals <br /> Antimony ND 2.0 mg/L AT0144 05/17/18 05/17/18 EPA 6010B <br /> Arsenic 0.9 0.2 " <br /> Barium 4.2 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 1.7 0.4 " <br /> Lead 0.8 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 ND 0.4 <br /> Zinc 6.3 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 />