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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 05/18/18 18:03 <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\E0153-EPA 6010B <br /> LCS(A\E0153-BS1) Prepared&Analyzed:05/18/18 <br /> Antimony 98.9 1.0 mg/kg 100 98.9 80-120 <br /> Arsenic 96.5 1.0 100 96.5 80-120 <br /> Arsenic 96.5 1.0 100 96.5 80-120 <br /> Barium 98.3 2.0 100 98.3 80-120 <br /> Beryllium 97.8 0.5 100 97.8 80-120 <br /> Cadmium 95.2 1.0 100 95.2 80-120 <br /> Chromium 101 1.0 100 101 80-120 <br /> Cobalt 98.6 5.0 100 98.6 80-120 <br /> Copper 97.1 2.0 100 97.1 80-120 <br /> Lead 96.9 1.0 100 96.9 80-120 <br /> Molybdenum 101 1.0 100 101 80-120 <br /> Lead 96.9 1.0 100 96.9 80-120 <br /> Nickel 98.1 1.0 100 98.1 80-120 <br /> Selenium 94.2 2.0 100 94.2 80-120 <br /> Silver 91.2 1.0 100 91.2 80-120 <br /> Thallium 96.6 2.0 100 96.6 80-120 <br /> Vanadium 95.3 2.0 100 95.3 80-120 <br /> Zinc 95.8 2.0 100 95.8 80-120 <br /> LCS Dup(A\E0153-BSD1) Prepared&Analyzed:05/18/18 <br /> Antimony 100 1.0 mg/kg 100 100 80-120 1.38 25 <br /> Arsenic 97.8 1.0 100 97.8 80-120 1.40 25 <br /> Arsenic 97.8 1.0 100 97.8 80-120 1.40 25 <br /> Barium 84.9 2.0 100 84.9 80-120 14.6 25 <br /> Beryllium 99.0 0.5 100 99.0 80-120 1.18 25 <br /> Cadmium 96.4 1.0 100 96.4 80-120 1.27 25 <br /> Chromium 102 1.0 100 102 80-120 0.885 25 <br /> Cobalt 99.7 5.0 100 99.7 80-120 1.09 25 <br /> Copper 98.8 2.0 100 98.8 80-120 1.79 25 <br /> Lead 98.3 1.0 100 98.3 80-120 1.41 25 <br /> Molybdenum 102 1.0 100 102 80-120 0.884 25 <br /> Lead 98.3 1.0 100 98.3 80-120 1.41 25 <br /> Nickel 99.2 1.0 100 99.2 80-120 1.14 25 <br /> Selenium 95.4 2.0 100 95.4 80-120 1.22 25 <br /> Silver 79.6 1.0 100 79.6 80-120 13.7 25 QR-04 <br /> Thallium 98.1 2.0 100 98.1 80-120 1.53 25 <br /> Vanadium 97.0 2.0 100 97.0 80-120 1.67 25 <br /> Zinc 96.9 2.0 100 96.9 80-120 1.10 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 16 <br />