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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 06/12/18 17:39 <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 AW0056-EPA 6010B <br /> LCS Dup(A\F0056-BSD1) Prepared:06/07/18 Analyzed:06/08/18 <br /> Antimony 102 1.0 mg/kg 100 102 80-120 0.489 25 <br /> Arsenic 101 1.0 100 101 80-120 0.0993 25 <br /> Arsenic 101 1.0 100 101 80-120 0.0993 25 <br /> Barium 102 2.0 100 102 80-120 0.878 25 <br /> Beryllium 101 0.5 100 101 80-120 0.297 25 <br /> Cadmium 100 1.0 100 100 80-120 0.529 25 <br /> Chromium 103 1.0 100 103 80-120 0.486 25 <br /> Cobalt 102 5.0 100 102 80-120 0.489 25 <br /> Copper 101 2.0 100 101 80-120 0.691 25 <br /> Lead 101 1.0 100 101 80-120 0.591 25 <br /> Molybdenum 102 1.0 100 102 80-120 0.391 25 <br /> Nickel 101 1.0 100 101 80-120 0.492 25 <br /> Lead 101 1.0 100 101 80-120 0.591 25 <br /> Selenium 98.4 2.0 100 98.4 80-120 0.365 25 <br /> Silver 101 1.0 100 101 80-120 1.48 25 <br /> Thallium 101 2.0 100 101 80-120 0.787 25 <br /> Vanadium 102 2.0 100 102 80-120 0.881 25 <br /> Zinc 100 2.0 100 100 80-120 0.895 25 <br /> Matrix Spike(A\F0056-MSI) Source:1806034-01 Prepared:06/07/18 Analyzed:06/08/18 <br /> Antimony 34.5 1.0 mg/kg 100 3.43 31.1 75-125 QM-01 <br /> Arsenic 132 1.0 100 33.6 98.0 75-125 <br /> Arsenic 132 1.0 100 33.6 98.0 75-125 <br /> Barium 545 2.0 100 467 77.8 75-125 <br /> Beryllium 91.8 0.5 100 0.168 91.6 75-125 <br /> Cadmium 100 1.0 100 2.10 98.1 75-125 <br /> Chromium 172 1.0 100 83.1 89.2 75-125 <br /> Cobalt 95.3 5.0 100 10.1 85.2 75-125 <br /> Copper 296 2.0 100 208 88.2 75-125 <br /> Lead 171 1.0 100 91.2 80.1 75-125 <br /> Molybdenum 90.6 1.0 100 2.82 87.8 75-125 <br /> Nickel 134 1.0 100 51.7 82.7 75-125 <br /> Lead 171 1.0 100 91.2 80.1 75-125 <br /> Selenium 93.1 2.0 100 ND 93.1 75-125 <br /> Silver 96.5 1.0 100 0.416 96.0 75-125 <br /> Thallium 75.9 2.0 100 ND 75.9 75-125 <br /> Vanadium 133 2.0 100 47.3 86.0 75-125 <br /> Zinc 452 2.0 100 377 74.2 75-125 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 6 of 14 <br />