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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 06/12/18 17:39 <br /> Total Recoverable Metals-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AW0056-EPA 6010B <br /> Matrix Spike Dup(A\F0056-MSD1) Source:1806034-01 Prepared:06/07/18 Analyzed:06/08/18 <br /> Antimony 34.8 1.0 mg/kg 100 3.43 31.4 75-125 1.01 25 QM-01 <br /> Arsenic 131 1.0 100 33.6 97.5 75-125 0.381 25 <br /> Arsenic 131 1.0 100 33.6 97.5 75-125 0.381 25 <br /> Barium 526 2.0 100 467 58.3 75-125 3.64 25 QM-01 <br /> Beryllium 92.1 0.5 100 0.168 91.9 75-125 0.315 25 <br /> Cadmium 100 1.0 100 2.10 98.3 75-125 0.199 25 <br /> Chromium 170 1.0 100 83.1 86.4 75-125 1.64 25 <br /> Cobalt 95.6 5.0 100 10.1 85.5 75-125 0.262 25 <br /> Copper 294 2.0 100 208 86.8 75-125 0.475 25 <br /> Lead 169 1.0 100 91.2 78.1 75-125 1.17 25 <br /> Molybdenum 90.5 1.0 100 2.82 87.7 75-125 0.121 25 <br /> Nickel 134 1.0 100 51.7 81.9 75-125 0.597 25 <br /> Lead 169 1.0 100 91.2 78.1 75-125 1.17 25 <br /> Selenium 93.9 2.0 100 ND 93.9 75-125 0.845 25 <br /> Silver 96.2 1.0 100 0.416 95.8 75-125 0.249 25 <br /> Thallium 75.5 2.0 100 ND 75.5 75-125 0.568 25 <br /> Vanadium 133 2.0 100 47.3 85.6 75-125 0.301 25 <br /> Zinc 446 2.0 100 377 68.4 75-125 1.29 25 QM-01 <br /> Batch AW0058-EPA 7471A <br /> Blank(A\F0058-BLK1) Prepared:06/07/18 Analyzed:06/08/18 <br /> Mercury ND 0.016 mg/kg <br /> LCS(A\F0058-BS1) Prepared:06/07/18 Analyzed:06/08/18 <br /> Mercury 0.194 0.016 mg/kg 0.200 97.2 80-120 <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 7 of 14 <br />