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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 06/07/18 17:24 <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 AW0047-EPA 6010B <br /> Matrix Spike(A\F0047-MS1) Source:1806019-01 Prepared:06/06/18 Analyzed:06/07/18 <br /> Antimony 40.2 1.0 mg/kg 100 1.05 39.1 75-125 QM-01 <br /> Arsenic 105 1.0 100 6.97 97.8 75-125 <br /> Arsenic 105 1.0 100 6.97 97.8 75-125 <br /> Barium 353 2.0 100 304 49.3 75-125 QM-01 <br /> Beryllium 89.8 0.5 100 0.200 89.6 75-125 <br /> Cadmium 97.3 1.0 100 0.204 97.1 75-125 <br /> Chromium 124 1.0 100 32.8 91.2 75-125 <br /> Cobalt 92.2 5.0 100 7.05 85.2 75-125 <br /> Copper 213 2.0 100 110 103 75-125 <br /> Lead 92.2 1.0 100 13.6 78.6 75-125 <br /> Molybdenum 91.4 1.0 100 0.916 90.4 75-125 <br /> Nickel 115 1.0 100 27.7 86.9 75-125 <br /> Lead 92.2 1.0 100 13.6 78.6 75-125 <br /> Selenium 92.7 2.0 100 ND 92.7 75-125 <br /> Silver 89.1 1.0 100 ND 89.1 75-125 <br /> Thallium 80.2 2.0 100 ND 80.2 75-125 <br /> Vanadium 109 2.0 100 30.7 78.0 75-125 <br /> Zinc 118 2.0 100 58.0 60.2 75-125 QM-01 <br /> Matrix Spike Dup(A\F0047-MSD1) Source:1806019-01 Prepared:06/06/18 Analyzed:06/07/18 <br /> Antimony 37.9 1.0 mg/kg 100 1.05 36.9 75-125 5.79 25 QM-01 <br /> Arsenic 107 1.0 100 6.97 99.9 75-125 1.98 25 <br /> Arsenic 107 1.0 100 6.97 99.9 75-125 1.98 25 <br /> Barium 402 2.0 100 304 98.0 75-125 12.9 25 <br /> Beryllium 90.6 0.5 100 0.200 90.3 75-125 0.809 25 <br /> Cadmium 99.0 1.0 100 0.204 98.8 75-125 1.73 25 <br /> Chromium 123 1.0 100 32.8 89.9 75-125 1.05 25 <br /> Cobalt 93.0 5.0 100 7.05 85.9 75-125 0.810 25 <br /> Copper 190 2.0 100 110 80.2 75-125 11.2 25 <br /> Lead 91.9 1.0 100 13.6 78.3 75-125 0.337 25 <br /> Molybdenum 93.5 1.0 100 0.916 92.6 75-125 2.34 25 <br /> Nickel 112 1.0 100 27.7 84.3 75-125 2.29 25 <br /> Lead 91.9 1.0 100 13.6 78.3 75-125 0.337 25 <br /> Selenium 94.8 2.0 100 ND 94.8 75-125 2.21 25 <br /> Silver 90.0 1.0 100 ND 90.0 75-125 0.960 25 <br /> Thallium 80.1 2.0 100 ND 80.1 75-125 0.187 25 <br /> Vanadium 114 2.0 100 30.7 82.8 75-125 4.32 25 <br /> Zinc 132 2.0 100 58.0 74.3 75-125 11.3 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 7 of 13 <br />