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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: 4701052861 Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 11/14/17 18:02 <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[K0085-EPA 6010B <br /> Matrix Spike(A[K0085-MS1) Source:1711058-01 Prepared&Analyzed: 11/13/17 <br /> Antimony 30.1 1.0 mg/kg 100 0.690 29.4 75-125 QM-01 <br /> Arsenic 103 1.0 100 ND 103 75-125 <br /> Arsenic 103 1.0 100 ND 103 75-125 <br /> Barium 218 2.0 100 85.6 132 75-125 QM-01 <br /> Beryllium 100 0.5 100 ND 100 75-125 <br /> Cadmium 102 1.0 100 0.113 102 75-125 <br /> Chromium 162 1.0 100 38.3 124 75-125 <br /> Cobalt 116 5.0 100 17.6 98.8 75-125 <br /> Copper 148 2.0 100 37.2 111 75-125 <br /> Lead 114 1.0 100 41.3 73.1 75-125 QM-01 <br /> Molybdenum 95.1 1.0 100 0.449 94.6 75-125 <br /> Nickel 161 1.0 100 66.9 94.4 75-125 <br /> Lead 114 1.0 100 41.3 73.1 75-125 QM-01 <br /> Selenium 96.6 2.0 100 ND 96.6 75-125 <br /> Silver 96.2 1.0 100 0.121 96.0 75-125 <br /> Thallium 86.3 2.0 100 ND 86.3 75-125 <br /> Vanadium 160 2.0 100 43.5 116 75-125 <br /> Zinc 172 2.0 100 61.4 110 75-125 <br /> Matrix Spike Dup(A[K0085-MSD1) Source:1711058-01 Prepared&Analyzed: 11/13/17 <br /> Antimony 28.9 1.0 mg/kg 100 0.690 28.2 75-125 4.17 25 QM-01 <br /> Arsenic 101 1.0 100 ND 101 75-125 1.97 25 <br /> Arsenic 101 1.0 100 ND 101 75-125 1.97 25 <br /> Barium 198 2.0 100 85.6 113 75-125 9.32 25 <br /> Beryllium 96.1 0.5 100 ND 96.1 75-125 4.28 25 <br /> Cadmium 98.9 1.0 100 0.113 98.8 75-125 2.80 25 <br /> Chromium 149 1.0 100 38.3 111 75-125 8.10 25 <br /> Cobalt 112 5.0 100 17.6 93.9 75-125 4.30 25 <br /> Copper 140 2.0 100 37.2 103 75-125 6.04 25 <br /> Lead 108 1.0 100 41.3 67.2 75-125 5.29 25 QM-01 <br /> Molybdenum 91.6 1.0 100 0.449 91.1 75-125 3.74 25 <br /> Lead 108 1.0 100 41.3 67.2 75-125 5.29 25 QM-01 <br /> Nickel 155 1.0 100 66.9 88.2 75-125 3.92 25 <br /> Selenium 95.7 2.0 100 ND 95.7 75-125 0.925 25 <br /> Silver 90.9 1.0 100 0.121 90.8 75-125 5.61 25 <br /> Thallium 83.8 2.0 100 ND 83.8 75-125 2.96 25 <br /> Vanadium 146 2.0 100 43.5 102 75-125 9.04 25 <br /> Zinc 163 2.0 100 61.4 101 75-125 5.33 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 9 of 15 <br />