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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 05/16/18 18:05 <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\E0127-EPA 6010B <br /> Matrix Spike(A\E0127-MS1) Source:1805087-01 Prepared:05/15/18 Analyzed:05/16/18 <br /> Antimony 32.8 1.0 mg/kg 100 1.72 31.0 75-125 QM-01 <br /> Arsenic 112 1.0 100 17.1 95.0 75-125 <br /> Arsenic 112 1.0 100 17.1 95.0 75-125 <br /> Barium 528 2.0 100 430 97.2 75-125 <br /> Beryllium 90.5 0.5 100 0.406 90.1 75-125 <br /> Cadmium 95.8 1.0 100 1.49 94.3 75-125 <br /> Chromium 132 1.0 100 42.7 89.1 75-125 <br /> Cobalt 93.4 5.0 100 9.63 83.7 75-125 <br /> Copper 214 2.0 100 141 73.3 75-125 QM-01 <br /> Lead 134 1.0 100 52.7 80.9 75-125 <br /> Molybdenum 88.7 1.0 100 2.38 86.3 75-125 <br /> Nickel 117 1.0 100 33.0 83.6 75-125 <br /> Lead 134 1.0 100 52.7 80.9 75-125 <br /> Selenium 87.2 2.0 100 ND 87.2 75-125 <br /> Silver 94.1 1.0 100 ND 94.1 75-125 <br /> Thallium 73.2 2.0 100 ND 73.2 75-125 QM-01 <br /> Vanadium 148 2.0 100 55.3 93.2 75-125 <br /> Zinc 432 2.0 100 335 97.4 75-125 <br /> Matrix Spike Dup(A\E0127-MSD1) Source:1805087-01 Prepared:05/15/18 Analyzed:05/16/18 <br /> Antimony 32.6 1.0 mg/kg 100 1.72 30.9 75-125 0.428 25 QM-01 <br /> Arsenic 114 1.0 100 17.1 96.4 75-125 1.24 25 <br /> Arsenic 114 1.0 100 17.1 96.4 75-125 1.24 25 <br /> Barium 540 2.0 100 430 110 75-125 2.30 25 <br /> Beryllium 91.4 0.5 100 0.406 91.0 75-125 0.978 25 <br /> Cadmium 96.9 1.0 100 1.49 95.4 75-125 1.09 25 <br /> Chromium 134 1.0 100 42.7 91.1 75-125 1.51 25 <br /> Cobalt 94.2 5.0 100 9.63 84.6 75-125 0.959 25 <br /> Copper 216 2.0 100 141 75.0 75-125 0.791 25 <br /> Lead 135 1.0 100 52.7 82.1 75-125 0.894 25 <br /> Molybdenum 89.2 1.0 100 2.38 86.8 75-125 0.607 25 <br /> Lead 135 1.0 100 52.7 82.1 75-125 0.894 25 <br /> Nickel 118 1.0 100 33.0 84.9 75-125 1.11 25 <br /> Selenium 87.8 2.0 100 ND 87.8 75-125 0.731 25 <br /> Silver 97.0 1.0 100 ND 97.0 75-125 3.00 25 <br /> Thallium 74.4 2.0 100 ND 74.4 75-125 1.53 25 QM-01 <br /> Vanadium 152 2.0 100 55.3 96.7 75-125 2.33 25 <br /> Zinc 436 2.0 100 335 101 75-125 0.899 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 8 of 10 <br />