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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 05/18/18 18:03 <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\E0153-EPA 6010B <br /> Matrix Spike(A\E0153-MS1) Source:1805105-01 Prepared&Analyzed:05/18/18 <br /> Antimony 30.8 1.0 mg/kg 100 4.99 25.8 75-125 QR-07 <br /> Arsenic 109 1.0 100 10.4 98.9 75-125 <br /> Arsenic 109 1.0 100 10.4 98.9 75-125 <br /> Barium 448 2.0 100 377 70.5 75-125 QR-07 <br /> Beryllium 89.5 0.5 100 0.514 89.0 75-125 <br /> Cadmium 98.9 1.0 100 0.395 98.5 75-125 <br /> Chromium 135 1.0 100 41.4 93.5 75-125 <br /> Cobalt 107 5.0 100 22.6 84.7 75-125 <br /> Copper 1740 2.0 100 1740 0.00 75-125 QR-07 <br /> Lead 84.0 1.0 100 4.62 79.4 75-125 <br /> Molybdenum 92.8 1.0 100 1.95 90.9 75-125 <br /> Nickel 107 1.0 100 22.1 84.5 75-125 <br /> Lead 84.0 1.0 100 4.62 79.4 75-125 <br /> Selenium 86.9 2.0 100 ND 86.9 75-125 <br /> Silver 75.0 1.0 100 ND 75.0 75-125 <br /> Thallium 70.2 2.0 100 ND 70.2 75-125 QR-07 <br /> Vanadium 141 2.0 100 59.0 82.1 75-125 <br /> Zinc 154 2.0 100 69.4 85.0 75-125 <br /> Matrix Spike Dup(A\E0153-MSD1) Source:1805105-01 Prepared&Analyzed:05/18/18 <br /> Antimony 27.1 1.0 mg/kg 100 4.99 22.1 75-125 12.8 25 QR-07 <br /> Arsenic 99.6 1.0 100 10.4 89.2 75-125 9.30 25 <br /> Arsenic 99.6 1.0 100 10.4 89.2 75-125 9.30 25 <br /> Barium 467 2.0 100 377 89.4 75-125 4.13 25 <br /> Beryllium 82.1 0.5 100 0.514 81.6 75-125 8.71 25 <br /> Cadmium 90.4 1.0 100 0.395 90.0 75-125 8.96 25 <br /> Chromium 126 1.0 100 41.4 84.4 75-125 6.98 25 <br /> Cobalt 100 5.0 100 22.6 77.5 75-125 6.94 25 <br /> Copper 1670 2.0 100 1740 NR 75-125 4.10 25 QR-07 <br /> Lead 77.1 1.0 100 4.62 72.4 75-125 8.62 25 QR-07 <br /> Molybdenum 84.8 1.0 100 1.95 82.8 75-125 9.07 25 <br /> Nickel 103 1.0 100 22.1 80.9 75-125 3.44 25 <br /> Lead 77.1 1.0 100 4.62 72.4 75-125 8.62 25 QR-07 <br /> Selenium 78.8 2.0 100 ND 78.8 75-125 9.69 25 <br /> Silver 86.3 1.0 100 ND 86.3 75-125 14.1 25 <br /> Thallium 64.4 2.0 100 ND 64.4 75-125 8.53 25 QR-07 <br /> Vanadium 135 2.0 100 59.0 75.9 75-125 4.49 25 <br /> Zinc 143 2.0 100 69.4 73.3 75-125 7.88 25 QR-07 <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 9 of 16 <br />