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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: [none] Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 08/14/17 17:46 <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 A[H0118-EPA 6010B <br /> Matrix Spike(A[H0118-MS1) Source:1708079-01 Prepared:08/10/17 Analyzed:08/11/17 <br /> Antimony 30.9 1.0 mg/kg 100 1.80 29.1 75-125 QM-01 <br /> Arsenic 112 1.0 100 18.8 93.0 75-125 <br /> Arsenic 112 1.0 100 18.8 93.0 75-125 <br /> Barium 442 2.0 100 340 102 75-125 <br /> Beryllium 84.8 0.5 100 ND 84.8 75-125 <br /> Cadmium 91.3 1.0 100 0.642 90.7 75-125 <br /> Chromium 120 1.0 100 32.3 87.3 75-125 <br /> Cobalt 87.2 5.0 100 6.79 80.4 75-125 <br /> Copper 212 2.0 100 131 81.1 75-125 <br /> Lead 107 1.0 100 32.6 74.6 75-125 QM-01 <br /> Molybdenum 83.8 1.0 100 2.17 81.6 75-125 <br /> Lead 107 1.0 100 32.6 74.6 75-125 QM-01 <br /> Nickel 102 1.0 100 22.9 79.3 75-125 <br /> Selenium 86.2 2.0 100 ND 86.2 75-125 <br /> Silver 83.5 1.0 100 ND 83.5 75-125 <br /> Thallium 74.9 2.0 100 0.633 74.3 75-125 QM-01 <br /> Vanadium 115 2.0 100 33.9 81.0 75-125 <br /> Zinc 336 2.0 100 246 90.3 75-125 <br /> Matrix Spike Dup(A[H0118-MSD1) Source:1708079-01 Prepared:08/10/17 Analyzed:08/11/17 <br /> Antimony 30.4 1.0 mg/kg 100 1.80 28.6 75-125 1.73 25 QM-01 <br /> Arsenic 110 1.0 100 18.8 90.7 75-125 2.08 25 <br /> Arsenic 110 1.0 100 18.8 90.7 75-125 2.08 25 <br /> Barium 428 2.0 100 340 88.3 75-125 3.06 25 <br /> Beryllium 84.0 0.5 100 ND 84.0 75-125 0.948 25 <br /> Cadmium 90.0 1.0 100 0.642 89.4 75-125 1.41 25 <br /> Chromium 114 1.0 100 32.3 81.2 75-125 5.23 25 <br /> Cobalt 86.0 5.0 100 6.79 79.2 75-125 1.42 25 <br /> Copper 204 2.0 100 131 73.8 75-125 3.51 25 QM-01 <br /> Lead 105 1.0 100 32.6 72.0 75-125 2.46 25 QM-01 <br /> Molybdenum 82.2 1.0 100 2.17 80.1 75-125 1.90 25 <br /> Lead 105 1.0 100 32.6 72.0 75-125 2.46 25 QM-01 <br /> Nickel 100 1.0 100 22.9 77.5 75-125 1.78 25 <br /> Selenium 85.3 2.0 100 ND 85.3 75-125 1.07 25 <br /> Silver 82.5 1.0 100 ND 82.5 75-125 1.18 25 <br /> Thallium 74.3 2.0 100 0.633 73.6 75-125 0.845 25 QM-01 <br /> Vanadium 114 2.0 100 33.9 79.9 75-125 0.962 25 <br /> Zinc 321 2.0 100 246 75.9 75-125 4.38 25 <br /> EXcelchem.Enviromnental 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 9 of 15 <br />