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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 /> LCS(A\E0129-BS1) Prepared&Analyzed:05/16/18 <br /> Antimony 99.0 1.0 mg/kg 100 99.0 80-120 <br /> Arsenic 96.2 1.0 100 96.2 80-120 <br /> Arsenic 96.2 1.0 100 96.2 80-120 <br /> Barium 97.0 2.0 100 97.0 80-120 <br /> Beryllium 97.8 0.5 100 97.8 80-120 <br /> Cadmium 96.0 1.0 100 96.0 80-120 <br /> Chromium 100 1.0 100 100 80-120 <br /> Cobalt 99.2 5.0 100 99.2 80-120 <br /> Copper 101 2.0 100 101 80-120 <br /> Lead 98.7 1.0 100 98.7 80-120 <br /> Molybdenum 100 1.0 100 100 80-120 <br /> Lead 98.7 1.0 100 98.7 80-120 <br /> Nickel 98.0 1.0 100 98.0 80-120 <br /> Selenium 92.6 2.0 100 92.6 80-120 <br /> Silver 94.5 1.0 100 94.5 80-120 <br /> Thallium 97.9 2.0 100 97.9 80-120 <br /> Vanadium 98.9 2.0 100 98.9 80-120 <br /> Zinc 97.0 2.0 100 97.0 80-120 <br /> LCS Dup(A\E0129-BSD1) Prepared&Analyzed:05/16/18 <br /> Antimony 98.5 1.0 mg/kg 100 98.5 80-120 0.476 25 <br /> Arsenic 96.0 1.0 100 96.0 80-120 0.198 25 <br /> Arsenic 96.0 1.0 100 96.0 80-120 0.198 25 <br /> Barium 96.9 2.0 100 96.9 80-120 0.124 25 <br /> Beryllium 97.9 0.5 100 97.9 80-120 0.123 25 <br /> Cadmium 95.9 1.0 100 95.9 80-120 0.156 25 <br /> Chromium 100 1.0 100 100 80-120 0.0300 25 <br /> Cobalt 99.2 5.0 100 99.2 80-120 0.0706 25 <br /> Copper 102 2.0 100 102 80-120 1.58 25 <br /> Lead 99.0 1.0 100 99.0 80-120 0.374 25 <br /> Molybdenum 100 1.0 100 100 80-120 0.0998 25 <br /> Nickel 98.1 1.0 100 98.1 80-120 0.173 25 <br /> Lead 99.0 1.0 100 99.0 80-120 0.374 25 <br /> Selenium 92.0 2.0 100 92.0 80-120 0.748 25 <br /> Silver 96.3 1.0 100 96.3 80-120 1.87 25 <br /> Thallium 97.9 2.0 100 97.9 80-120 0.0306 25 <br /> Vanadium 101 2.0 100 101 80-120 2.07 25 <br /> Zinc 97.6 2.0 100 97.6 80-120 0.565 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 />