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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 02/19/18 19:14 <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\B0155-EPA 6010B <br /> Matrix Spike Dup(A\B0155-MSD1) Source:1802097-01 Prepared:02/15/18 Analyzed:02/19/18 <br /> Antimony 97.7 1.0 mg/kg 100 ND 97.7 75-125 1.28 25 <br /> Arsenic 99.5 1.0 100 0.960 98.5 75-125 0.949 25 <br /> Arsenic 99.5 1.0 100 0.960 98.5 75-125 0.949 25 <br /> Barium 358 2.0 100 289 69.0 75-125 0.0839 25 QM-01 <br /> Beryllium 91.5 0.5 100 0.072 91.4 75-125 1.15 25 <br /> Cadmium 95.2 1.0 100 ND 95.2 75-125 1.16 25 <br /> Chromium 106 1.0 100 16.5 89.3 75-125 0.950 25 <br /> Cobalt 90.5 5.0 100 5.61 84.8 75-125 1.12 25 <br /> Copper 170 2.0 100 84.9 85.6 75-125 0.765 25 <br /> Lead 83.2 1.0 100 1.00 82.2 75-125 1.62 25 <br /> Molybdenum 92.6 1.0 100 0.729 91.9 75-125 1.18 25 <br /> Nickel 99.4 1.0 100 15.2 84.2 75-125 1.12 25 <br /> Lead 83.2 1.0 100 1.00 82.2 75-125 1.62 25 <br /> Selenium 92.4 2.0 100 ND 92.4 75-125 0.990 25 <br /> Silver 84.4 1.0 100 ND 84.4 75-125 1.23 25 <br /> Thallium 80.7 2.0 100 ND 80.7 75-125 1.43 25 <br /> Vanadium 103 2.0 100 24.4 78.5 75-125 0.780 25 <br /> Zinc 106 2.0 100 21.9 84.0 75-125 1.33 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 />