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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: #7401180998 Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 05/17/18 18:25 <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\E0129-EPA 6010B <br /> Matrix Spike(A\E0129-MS1) Source:1805096-01 Prepared&Analyzed:05/16/18 <br /> Antimony 29.6 1.0 mg/kg 100 1.44 28.2 75-125 QM-01 <br /> Arsenic 111 1.0 100 11.2 99.8 75-125 <br /> Arsenic 111 1.0 100 11.2 99.8 75-125 <br /> Barium 418 2.0 100 355 63.4 75-125 QM-01 <br /> Beryllium 93.6 0.5 100 0.306 93.3 75-125 <br /> Cadmium 97.8 1.0 100 0.882 96.9 75-125 <br /> Chromium 126 1.0 100 32.0 94.4 75-125 <br /> Cobalt 95.9 5.0 100 7.84 88.0 75-125 <br /> Copper 172 2.0 100 82.4 89.5 75-125 <br /> Lead 109 1.0 100 26.4 82.9 75-125 <br /> Molybdenum 91.7 1.0 100 1.53 90.1 75-125 <br /> Nickel 112 1.0 100 25.1 87.0 75-125 <br /> Lead 109 1.0 100 26.4 82.9 75-125 <br /> Selenium 93.8 2.0 100 ND 93.8 75-125 <br /> Silver 85.0 1.0 100 ND 85.0 75-125 <br /> Thallium 74.9 2.0 100 ND 74.9 75-125 QM-01 <br /> Vanadium 124 2.0 100 41.2 82.6 75-125 <br /> Zinc 270 2.0 100 189 80.7 75-125 <br /> Matrix Spike Dup(A\E0129-MSD1) Source:1805096-01 Prepared&Analyzed:05/16/18 <br /> Antimony 30.2 1.0 mg/kg 100 1.44 28.8 75-125 2.04 25 QM-01 <br /> Arsenic 110 1.0 100 11.2 98.6 75-125 1.09 25 <br /> Arsenic 110 1.0 100 11.2 98.6 75-125 1.09 25 <br /> Barium 396 2.0 100 355 40.5 75-125 5.63 25 QM-01 <br /> Beryllium 93.1 0.5 100 0.306 92.8 75-125 0.493 25 <br /> Cadmium 97.1 1.0 100 0.882 96.2 75-125 0.739 25 <br /> Chromium 124 1.0 100 32.0 92.4 75-125 1.68 25 <br /> Cobalt 95.4 5.0 100 7.84 87.5 75-125 0.512 25 <br /> Copper 168 2.0 100 82.4 85.2 75-125 2.53 25 <br /> Lead 112 1.0 100 26.4 86.0 75-125 2.80 25 <br /> Molybdenum 90.1 1.0 100 1.53 88.5 75-125 1.77 25 <br /> Nickel 116 1.0 100 25.1 90.6 75-125 3.16 25 <br /> Lead 112 1.0 100 26.4 86.0 75-125 2.80 25 <br /> Selenium 92.1 2.0 100 ND 92.1 75-125 1.84 25 <br /> Silver 85.1 1.0 100 ND 85.1 75-125 0.223 25 <br /> Thallium 75.2 2.0 100 ND 75.2 75-125 0.426 25 <br /> Vanadium 124 2.0 100 41.2 82.4 75-125 0.243 25 <br /> Zinc 268 2.0 100 189 79.4 75-125 0.483 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 9 of 15 <br />