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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 05/24/18 11:08 <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\E0208-EPA 6010B <br /> Matrix Spike(A\E0208-MS1) Source:1805138-01 Prepared&Analyzed:05/23/18 <br /> Antimony 21.8 1.0 mg/kg 100 1.28 20.5 75-125 QM-01 <br /> Arsenic 126 1.0 100 25.4 100 75-125 <br /> Arsenic 126 1.0 100 25.4 100 75-125 <br /> Barium 413 2.0 100 320 92.8 75-125 <br /> Beryllium 82.4 0.5 100 0.280 82.1 75-125 <br /> Cadmium 90.1 1.0 100 1.60 88.5 75-125 <br /> Chromium 118 1.0 100 33.9 84.4 75-125 <br /> Cobalt 86.6 5.0 100 7.50 79.1 75-125 <br /> Copper 210 2.0 100 117 92.9 75-125 <br /> Lead 124 1.0 100 43.6 80.2 75-125 <br /> Molybdenum 81.7 1.0 100 2.18 79.5 75-125 <br /> Lead 124 1.0 100 43.6 80.2 75-125 <br /> Nickel 106 1.0 100 26.3 79.5 75-125 <br /> Selenium 86.6 2.0 100 ND 86.6 75-125 <br /> Silver 75.0 1.0 100 ND 75.0 75-125 <br /> Thallium 68.9 2.0 100 ND 68.9 75-125 QM-01 <br /> Vanadium 106 2.0 100 33.9 71.6 75-125 QM-01 <br /> Zinc 454 2.0 100 357 97.7 75-125 E <br /> Matrix Spike Dup(A\E0208-MSD1) Source:1805138-01 Prepared&Analyzed:05/23/18 <br /> Antimony 23.8 1.0 mg/kg 100 1.28 22.5 75-125 8.69 25 QM-01 <br /> Arsenic 122 1.0 100 25.4 96.4 75-125 3.23 25 <br /> Arsenic 122 1.0 100 25.4 96.4 75-125 3.23 25 <br /> Barium 422 2.0 100 320 101 75-125 2.01 25 <br /> Beryllium 86.6 0.5 100 0.280 86.3 75-125 4.97 25 <br /> Cadmium 94.8 1.0 100 1.60 93.2 75-125 5.03 25 <br /> Chromium 120 1.0 100 33.9 85.8 75-125 1.18 25 <br /> Cobalt 89.5 5.0 100 7.50 82.0 75-125 3.33 25 <br /> Copper 198 2.0 100 117 81.5 75-125 5.59 25 <br /> Lead 123 1.0 100 43.6 79.5 75-125 0.567 25 <br /> Molybdenum 87.0 1.0 100 2.18 84.8 75-125 6.30 25 <br /> Lead 123 1.0 100 43.6 79.5 75-125 0.567 25 <br /> Nickel 108 1.0 100 26.3 82.2 75-125 2.52 25 <br /> Selenium 92.6 2.0 100 ND 92.6 75-125 6.68 25 <br /> Silver 75.7 1.0 100 ND 75.7 75-125 0.849 25 <br /> Thallium 73.2 2.0 100 ND 73.2 75-125 6.12 25 QM-01 <br /> Vanadium 109 2.0 100 33.9 75.2 75-125 3.36 25 <br /> Zinc 432 2.0 100 357 74.7 75-125 5.19 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 9 of 15 <br />