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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 /> 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\B0196-EPA 6010B <br /> Matrix Spike(A\B0196-MS1) Source:1802125-01 Prepared&Analyzed:02/19/18 <br /> Antimony 21.6 2.0 mg/L 20.0 0.012 108 75-125 <br /> Arsenic 22.3 0.2 20.0 0.091 111 75-125 <br /> Barium 22.9 0.4 20.0 3.63 96.3 75-125 <br /> Beryllium 19.3 0.1 20.0 ND 96.4 75-125 <br /> Cadmium 20.7 0.2 20.0 0.004 103 75-125 <br /> Chromium 20.3 0.2 20.0 0.231 100 75-125 <br /> Cobalt 19.1 1.0 20.0 0.062 95.2 75-125 <br /> Copper 19.1 0.4 20.0 1.23 89.4 75-125 <br /> Lead 18.5 0.2 20.0 0.014 92.5 75-125 <br /> Molybdenum 20.7 0.2 20.0 0.068 103 75-125 <br /> Nickel 19.0 0.2 20.0 0.238 94.1 75-125 <br /> Selenium 22.0 0.4 20.0 0.078 110 75-125 <br /> Silver 17.2 0.4 20.0 ND 86.0 75-125 <br /> Thallium 17.2 0.4 20.0 ND 85.8 75-125 <br /> Vanadium 17.5 0.4 20.0 0.304 86.1 75-125 <br /> Zinc 20.0 0.4 20.0 0.558 97.1 75-125 <br /> Matrix Spike Dup(A\B0196-MSD1) Source:1802125-01 Prepared&Analyzed:02/19/18 <br /> Antimony 22.0 2.0 mg/L 20.0 0.012 110 75-125 1.93 25 <br /> Arsenic 22.6 0.2 20.0 0.091 113 75-125 1.60 25 <br /> Barium 22.2 0.4 20.0 3.63 92.7 75-125 3.15 25 <br /> Beryllium 19.4 0.1 20.0 ND 96.8 75-125 0.518 25 <br /> Cadmium 21.0 0.2 20.0 0.004 105 75-125 1.72 25 <br /> Chromium 20.6 0.2 20.0 0.231 102 75-125 1.61 25 <br /> Cobalt 19.4 1.0 20.0 0.062 96.7 75-125 1.56 25 <br /> Copper 19.2 0.4 20.0 1.23 89.8 75-125 0.470 25 <br /> Lead 18.8 0.2 20.0 0.014 93.8 75-125 1.45 25 <br /> Molybdenum 21.0 0.2 20.0 0.068 105 75-125 1.58 25 <br /> Nickel 19.3 0.2 20.0 0.238 95.4 75-125 1.41 25 <br /> Selenium 22.4 0.4 20.0 0.078 112 75-125 1.89 25 <br /> Silver 16.6 0.4 20.0 ND 83.2 75-125 3.25 25 <br /> Thallium 17.4 0.4 20.0 ND 87.2 75-125 1.62 25 <br /> Vanadium 17.6 0.4 20.0 0.304 86.5 75-125 0.399 25 <br /> Zinc 20.2 0.4 20.0 0.558 98.3 75-125 1.14 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 13 of 16 <br />