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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 06/13/18 16:19 <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 AT0087-EPA 6010B <br /> Matrix Spike(A\F0087-MS1) Source:1806052-01 Prepared:06/11/18 Analyzed:06/13/18 <br /> Antimony 20.8 2.0 mg/L 20.0 0.035 104 75-125 <br /> Arsenic 22.1 0.2 20.0 0.647 107 75-125 <br /> Barium 22.2 0.4 20.0 2.00 101 75-125 <br /> Beryllium 19.6 0.1 20.0 0.010 97.9 75-125 <br /> Cadmium 20.2 0.2 20.0 0.019 101 75-125 <br /> Chromium 20.5 0.2 20.0 0.283 101 75-125 <br /> Cobalt 19.0 1.0 20.0 0.091 94.8 75-125 <br /> Copper 27.9 0.4 20.0 8.74 96.0 75-125 <br /> Lead 18.0 0.2 20.0 ND 90.2 75-125 <br /> Molybdenum 20.6 0.2 20.0 0.091 102 75-125 <br /> Nickel 19.2 0.2 20.0 0.255 95.0 75-125 <br /> Selenium 21.9 0.4 20.0 0.022 109 75-125 <br /> Silver 18.5 0.4 20.0 ND 92.6 75-125 <br /> Thallium 17.5 0.4 20.0 0.012 87.4 75-125 <br /> Vanadium 18.1 0.4 20.0 0.533 88.0 75-125 <br /> Zinc 59.5 0.4 20.0 34.6 125 75-125 <br /> Matrix Spike Dup(A\F0087-MSD1) Source:1806052-01 Prepared:06/11/18 Analyzed:06/13/18 <br /> Antimony 20.9 2.0 mg/L 20.0 0.035 104 75-125 0.240 25 <br /> Arsenic 22.2 0.2 20.0 0.647 108 75-125 0.271 25 <br /> Barium 22.0 0.4 20.0 2.00 99.8 75-125 0.952 25 <br /> Beryllium 19.6 0.1 20.0 0.010 98.0 75-125 0.153 25 <br /> Cadmium 20.2 0.2 20.0 0.019 101 75-125 0.0494 25 <br /> Chromium 20.5 0.2 20.0 0.283 101 75-125 0.195 25 <br /> Cobalt 19.1 1.0 20.0 0.091 94.8 75-125 0.0525 25 <br /> Copper 27.7 0.4 20.0 8.74 94.8 75-125 0.827 25 <br /> Lead 18.2 0.2 20.0 ND 90.8 75-125 0.608 25 <br /> Molybdenum 20.6 0.2 20.0 0.091 103 75-125 0.194 25 <br /> Nickel 19.4 0.2 20.0 0.255 95.5 75-125 0.518 25 <br /> Selenium 22.0 0.4 20.0 0.022 110 75-125 0.592 25 <br /> Silver 18.3 0.4 20.0 ND 91.6 75-125 1.19 25 <br /> Thallium 17.7 0.4 20.0 0.012 88.2 75-125 0.910 25 <br /> Vanadium 18.0 0.4 20.0 0.533 87.3 75-125 0.775 25 <br /> Zinc 59.0 0.4 20.0 34.6 122 75-125 0.928 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 10 of 13 <br />