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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 /> STLC Metals-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch A[H0056-EPA 6010B <br /> Matrix Spike(A[H0056-MS1) Source:1708005-01 Prepared&Analyzed:08/04/17 <br /> Antimony 21.0 2.0 mg/L 20.0 0.130 104 75-125 <br /> Arsenic 24.1 0.2 20.0 1.34 114 75-125 <br /> Barium 25.6 0.4 20.0 5.10 102 75-125 <br /> Beryllium 19.3 0.1 20.0 0.007 96.7 75-125 <br /> Cadmium 19.8 0.2 20.0 0.059 98.6 75-125 <br /> Chromium 21.1 0.2 20.0 0.628 102 75-125 <br /> Cobalt 19.2 1.0 20.0 0.083 95.3 75-125 <br /> Copper 21.2 0.4 20.0 3.14 90.4 75-125 <br /> Lead 18.7 0.2 20.0 0.057 93.3 75-125 <br /> Molybdenum 20.8 0.2 20.0 0.159 103 75-125 <br /> Nickel 18.4 0.2 20.0 0.395 90.3 75-125 <br /> Selenium 21.1 0.4 20.0 ND 106 75-125 <br /> Silver 18.4 0.4 20.0 ND 91.8 75-125 <br /> Thallium 17.7 0.4 20.0 0.023 88.5 75-125 <br /> Vanadium 19.0 0.4 20.0 0.308 93.3 75-125 <br /> Zinc 34.1 0.4 20.0 12.8 106 75-125 <br /> Matrix Spike Dup(A[H0056-MSD1) Source:1708005-01 Prepared&Analyzed:08/04/17 <br /> Antimony 21.0 2.0 mg/L 20.0 0.130 104 75-125 0.238 25 <br /> Arsenic 24.0 0.2 20.0 1.34 113 75-125 0.291 25 <br /> Barium 25.4 0.4 20.0 5.10 101 75-125 0.863 25 <br /> Beryllium 19.3 0.1 20.0 0.007 96.6 75-125 0.0517 25 <br /> Cadmium 19.8 0.2 20.0 0.059 98.8 75-125 0.202 25 <br /> Chromium 21.1 0.2 20.0 0.628 103 75-125 0.142 25 <br /> Cobalt 19.2 1.0 20.0 0.083 95.6 75-125 0.261 25 <br /> Copper 21.1 0.4 20.0 3.14 89.9 75-125 0.472 25 <br /> Lead 18.9 0.2 20.0 0.057 94.0 75-125 0.799 25 <br /> Molybdenum 20.8 0.2 20.0 0.159 103 75-125 0.193 25 <br /> Nickel 18.5 0.2 20.0 0.395 90.5 75-125 0.217 25 <br /> Selenium 21.1 0.4 20.0 ND 106 75-125 0.00 25 <br /> Silver 18.4 0.4 20.0 ND 92.1 75-125 0.381 25 <br /> Thallium 17.8 0.4 20.0 0.023 88.9 75-125 0.450 25 <br /> Vanadium 19.0 0.4 20.0 0.308 93.6 75-125 0.263 25 <br /> Zinc 33.6 0.4 20.0 12.8 104 75-125 1.27 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 12 of 15 <br />