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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 16:27 <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 AW0029-EPA 6010B <br /> LCS Dup(A\F0029-BSD1) Prepared&Analyzed:06/05/18 <br /> Antimony 101 1.0 mg/kg 100 101 80-120 0.0986 25 <br /> Arsenic 101 1.0 100 101 80-120 0.396 25 <br /> Arsenic 101 1.0 100 101 80-120 0.396 25 <br /> Barium 99.5 2.0 100 99.5 80-120 0.381 25 <br /> Beryllium 97.7 0.5 100 97.7 80-120 0.286 25 <br /> Cadmium 98.5 1.0 100 98.5 80-120 0.436 25 <br /> Chromium 102 1.0 100 102 80-120 0.293 25 <br /> Cobalt 100 5.0 100 100 80-120 0.298 25 <br /> Copper 100 2.0 100 100 80-120 0.00 25 <br /> Lead 100 1.0 100 100 80-120 0.299 25 <br /> Molybdenum 104 1.0 100 104 80-120 0.0965 25 <br /> Nickel 100 1.0 100 100 80-120 0.398 25 <br /> Lead 100 1.0 100 100 80-120 0.299 25 <br /> Selenium 96.5 2.0 100 96.5 80-120 0.548 25 <br /> Silver 94.1 1.0 100 94.1 80-120 0.720 25 <br /> Thallium 101 2.0 100 101 80-120 0.492 25 <br /> Vanadium 96.7 2.0 100 96.7 80-120 0.0207 25 <br /> Zinc 99.7 2.0 100 99.7 80-120 1.13 25 <br /> Matrix Spike(A\F0029-MSI) Source:1806007-01 Prepared&Analyzed:06/05/18 <br /> Antimony 42.1 1.0 mg/kg 100 0.736 41.4 75-125 QM-01 <br /> Arsenic 103 1.0 100 4.01 99.1 75-125 <br /> Arsenic 103 1.0 100 4.01 99.1 75-125 <br /> Barium 349 2.0 100 199 150 75-125 QM-11 <br /> Beryllium 92.0 0.5 100 0.146 91.8 75-125 <br /> Cadmium 97.8 1.0 100 0.140 97.6 75-125 <br /> Chromium 129 1.0 100 22.1 107 75-125 <br /> Cobalt 94.3 5.0 100 6.64 87.7 75-125 <br /> Copper 211 2.0 100 83.5 128 75-125 QM-01 <br /> Lead 102 1.0 100 13.9 87.8 75-125 <br /> Molybdenum 94.1 1.0 100 0.626 93.4 75-125 <br /> Lead 102 1.0 100 13.9 87.8 75-125 <br /> Nickel 122 1.0 100 24.8 96.7 75-125 <br /> Selenium 93.1 2.0 100 ND 93.1 75-125 <br /> Silver 90.8 1.0 100 ND 90.8 75-125 <br /> Thallium 81.3 2.0 100 ND 81.3 75-125 <br /> Vanadium 115 2.0 100 31.4 83.6 75-125 <br /> Zinc 123 2.0 100 30.5 92.3 75-125 <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 />