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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 02/20/18 17:00 <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\B0208-EPA 6010B <br /> Matrix Spike(A\B0208-MS1) Source:1802122-01 Prepared&Analyzed:02/20/18 <br /> Antimony 45.2 1.0 mg/kg 100 0.208 45.0 75-125 QM-01 <br /> Arsenic 105 1.0 100 0.393 105 75-125 <br /> Arsenic 105 1.0 100 0.393 105 75-125 <br /> Barium 273 2.0 100 146 127 75-125 QM-01 <br /> Beryllium 99.4 0.5 100 0.038 99.3 75-125 <br /> Cadmium 101 1.0 100 ND 101 75-125 <br /> Chromium 108 1.0 100 12.0 96.0 75-125 <br /> Cobalt 97.4 5.0 100 5.09 92.3 75-125 <br /> Copper 131 2.0 100 46.5 84.9 75-125 <br /> Lead 91.0 1.0 100 1.45 89.6 75-125 <br /> Molybdenum 95.8 1.0 100 0.473 95.3 75-125 <br /> Nickel 103 1.0 100 11.8 91.6 75-125 <br /> Lead 91.0 1.0 100 1.45 89.6 75-125 <br /> Selenium 97.9 2.0 100 ND 97.9 75-125 <br /> Silver 88.2 1.0 100 ND 88.2 75-125 <br /> Thallium 92.8 2.0 100 ND 92.8 75-125 <br /> Vanadium 111 2.0 100 21.2 90.2 75-125 <br /> Zinc 117 2.0 100 22.5 94.1 75-125 <br /> Matrix Spike Dup(A\B0208-MSD1) Source:1802122-01 Prepared&Analyzed:02/20/18 <br /> Antimony 41.6 1.0 mg/kg 100 0.208 41.4 75-125 8.30 25 QM-01 <br /> Arsenic 105 1.0 100 0.393 105 75-125 0.00 25 <br /> Arsenic 105 1.0 100 0.393 105 75-125 0.00 25 <br /> Barium 369 2.0 100 146 223 75-125 30.0 25 QM-01 <br /> Beryllium 98.1 0.5 100 0.038 98.1 75-125 1.24 25 <br /> Cadmium 101 1.0 100 ND 101 75-125 0.0987 25 <br /> Chromium 108 1.0 100 12.0 96.4 75-125 0.369 25 <br /> Cobalt 96.9 5.0 100 5.09 91.8 75-125 0.546 25 <br /> Copper 152 2.0 100 46.5 105 75-125 14.3 25 <br /> Lead 90.4 1.0 100 1.45 89.0 75-125 0.661 25 <br /> Molybdenum 94.8 1.0 100 0.473 94.3 75-125 1.08 25 <br /> Lead 90.4 1.0 100 1.45 89.0 75-125 0.661 25 <br /> Nickel 103 1.0 100 11.8 91.4 75-125 0.0968 25 <br /> Selenium 97.4 2.0 100 ND 97.4 75-125 0.512 25 <br /> Silver 88.0 1.0 100 ND 88.0 75-125 0.193 25 <br /> Thallium 91.5 2.0 100 ND 91.5 75-125 1.41 25 <br /> Vanadium 109 2.0 100 21.2 88.0 75-125 2.09 25 <br /> Zinc 115 2.0 100 22.5 92.3 75-125 1.56 25 <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 15 <br />