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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 08/07/17 10:51 <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[H0052-EPA 6010B <br /> Matrix Spike(A[H0052-MS1) Source:1708005-01 Prepared:08/03/17 Analyzed:08/04/17 <br /> Antimony 37.5 1.0 mg/kg 100 1.84 35.7 75-125 QM-01 <br /> Arsenic 122 1.0 100 17.8 105 75-125 <br /> Arsenic 122 1.0 100 17.8 105 75-125 <br /> Barium 458 10.0 100 302 156 75-125 QM-01 <br /> Beryllium 111 0.5 100 0.310 111 75-125 <br /> Cadmium 94.4 1.0 100 0.941 93.5 75-125 <br /> Chromium 124 1.0 100 27.4 96.2 75-125 <br /> Cobalt 90.7 5.0 100 6.26 84.4 75-125 <br /> Copper 200 2.0 100 110 89.8 75-125 <br /> Lead 116 1.0 100 27.0 88.7 75-125 <br /> Molybdenum 90.0 1.0 100 1.51 88.5 75-125 <br /> Lead 116 1.0 100 27.0 88.7 75-125 <br /> Nickel 116 1.0 100 21.6 94.8 75-125 <br /> Selenium 92.6 2.0 100 ND 92.6 75-125 <br /> Silver 86.2 1.0 100 ND 86.2 75-125 <br /> Thallium 75.7 2.0 100 ND 75.7 75-125 <br /> Vanadium 117 2.0 100 31.2 86.2 75-125 <br /> Zinc 393 2.0 100 270 123 75-125 <br /> Matrix Spike Dup(A[H0052-MSD1) Source:1708005-01 Prepared:08/03/17 Analyzed:08/04/17 <br /> Antimony 37.4 1.0 mg/kg 100 1.84 35.5 75-125 0.427 25 QM-01 <br /> Arsenic 121 1.0 100 17.8 103 75-125 1.23 25 <br /> Arsenic 121 1.0 100 17.8 103 75-125 1.23 25 <br /> Barium 433 10.0 100 302 130 75-125 5.61 25 QM-01 <br /> Beryllium 112 0.5 100 0.310 112 75-125 0.805 25 <br /> Cadmium 93.7 1.0 100 0.941 92.7 75-125 0.798 25 <br /> Chromium 121 1.0 100 27.4 93.8 75-125 1.96 25 <br /> Cobalt 90.1 5.0 100 6.26 83.8 75-125 0.708 25 <br /> Copper 190 2.0 100 110 80.3 75-125 4.87 25 <br /> Lead 116 1.0 100 27.0 89.3 75-125 0.517 25 <br /> Molybdenum 90.0 1.0 100 1.51 88.5 75-125 0.0111 25 <br /> Lead 116 1.0 100 27.0 89.3 75-125 0.517 25 <br /> Nickel 115 1.0 100 21.6 93.0 75-125 1.56 25 <br /> Selenium 93.4 2.0 100 ND 93.4 75-125 0.882 25 <br /> Silver 86.2 1.0 100 ND 86.2 75-125 0.00 25 <br /> Thallium 75.6 2.0 100 ND 75.6 75-125 0.172 25 <br /> Vanadium 115 2.0 100 31.2 83.5 75-125 2.33 25 <br /> Zinc 398 2.0 100 270 127 75-125 1.11 25 QM-01 <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 />