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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 08/07/17 10:51 <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[H0052-EPA 6010B <br /> LCS(A[H0052-BS1) Prepared:08/03/17 Analyzed:08/04/17 <br /> Antimony 96.1 1.0 mg/kg 100 96.1 80-120 <br /> Arsenic 99.9 1.0 100 99.9 80-120 <br /> Arsenic 99.9 1.0 100 99.9 80-120 <br /> Barium 101 10.0 100 101 80-120 <br /> Beryllium 118 0.5 100 118 80-120 <br /> Cadmium 91.7 1.0 100 91.7 80-120 <br /> Chromium 101 1.0 100 101 80-120 <br /> Cobalt 96.5 5.0 100 96.5 80-120 <br /> Copper 98.6 2.0 100 98.6 80-120 <br /> Lead 97.4 1.0 100 97.4 80-120 <br /> Molybdenum 98.5 1.0 100 98.5 80-120 <br /> Nickel 107 1.0 100 107 80-120 <br /> Lead 97.4 1.0 100 97.4 80-120 <br /> Selenium 97.4 2.0 100 97.4 80-120 <br /> Silver 94.9 1.0 100 94.9 80-120 <br /> Thallium 96.2 2.0 100 96.2 80-120 <br /> Vanadium 98.9 2.0 100 98.9 80-120 <br /> Zinc 101 2.0 100 101 80-120 <br /> LCS Dup(A[H0052-BSD1) Prepared:08/03/17 Analyzed:08/04/17 <br /> Antimony 95.0 1.0 mg/kg 100 95.0 80-120 1.10 25 <br /> Arsenic 100 1.0 100 100 80-120 0.589 25 <br /> Arsenic 100 1.0 100 100 80-120 0.589 25 <br /> Barium 102 10.0 100 102 80-120 1.08 25 <br /> Beryllium 120 0.5 100 120 80-120 2.02 25 <br /> Cadmium 93.7 1.0 100 93.7 80-120 2.19 25 <br /> Chromium 104 1.0 100 104 80-120 2.94 25 <br /> Cobalt 100 5.0 100 100 80-120 3.48 25 <br /> Copper 102 2.0 100 102 80-120 3.11 25 <br /> Lead 103 1.0 100 103 80-120 5.28 25 <br /> Molybdenum 100 1.0 100 100 80-120 1.53 25 <br /> Lead 103 1.0 100 103 80-120 5.28 25 <br /> Nickel 111 1.0 100 111 80-120 3.85 25 <br /> Selenium 96.3 2.0 100 96.3 80-120 1.12 25 <br /> Silver 99.0 1.0 100 99.0 80-120 4.21 25 <br /> Thallium 99.2 2.0 100 99.2 80-120 3.03 25 <br /> Vanadium 105 2.0 100 105 80-120 5.90 25 <br /> Zinc 110 2.0 100 110 80-120 8.24 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 8 of 15 <br />