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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 02/20/18 16:41 <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\B0160-EPA 6010B <br /> Matrix Spike Dup(A\B0160-MSD1) Source:1802106-01 Prepared&Analyzed:02/16/18 <br /> Antimony 20.0 1.0 mg/kg 100 0.834 19.2 75-125 22.5 25 QM-01 <br /> Arsenic 85.0 1.0 100 0.958 84.0 75-125 3.58 25 <br /> Arsenic 85.0 1.0 100 0.958 84.0 75-125 3.58 25 <br /> Barium 281 2.0 100 207 74.7 75-125 8.02 25 QM-01 <br /> Beryllium 87.1 0.5 100 0.199 86.9 75-125 2.73 25 <br /> Cadmium 92.6 1.0 100 ND 92.6 75-125 3.01 25 <br /> Chromium 134 1.0 100 47.2 86.5 75-125 12.5 25 <br /> Cobalt 99.7 5.0 100 17.2 82.4 75-125 7.46 25 <br /> Copper 109 2.0 100 24.2 84.4 75-125 1.73 25 <br /> Lead 92.3 1.0 100 20.6 71.7 75-125 6.94 25 QM-01 <br /> Molybdenum 75.6 1.0 100 0.143 75.5 75-125 7.88 25 <br /> Nickel 128 1.0 100 45.4 82.7 75-125 6.93 25 <br /> Lead 92.3 1.0 100 20.6 71.7 75-125 6.94 25 QM-01 <br /> Selenium 81.0 2.0 100 ND 81.0 75-125 3.23 25 <br /> Silver 79.6 1.0 100 ND 79.6 75-125 5.02 25 <br /> Thallium 80.9 2.0 100 0.260 80.7 75-125 3.42 25 <br /> Vanadium 126 2.0 100 45.8 80.1 75-125 0.0795 25 <br /> Zinc 134 2.0 100 50.9 83.2 75-125 1.70 25 <br /> Batch A\B0183-EPA 7471A <br /> Blank(A\B0183-BLK1) Prepared&Analyzed:02/19/18 <br /> Mercury ND 0.016 mg/kg <br /> LCS(A\B0183-BS1) Prepared&Analyzed:02/19/18 <br /> Mercury 0.170 0.016 mg/kg 0.200 85.2 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 9 of 16 <br />