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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 02/19/18 19:14 <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\B0155-EPA 6010B <br /> LCS Dup(A\B0155-BSD1) Prepared:02/15/18 Analyzed:02/16/18 <br /> Antimony 96.7 1.0 mg/kg 100 96.7 80-120 1.37 25 <br /> Arsenic 93.4 1.0 100 93.4 80-120 1.59 25 <br /> Arsenic 93.4 1.0 100 93.4 80-120 1.59 25 <br /> Barium 99.6 2.0 100 99.6 80-120 1.01 25 <br /> Beryllium 93.6 0.5 100 93.6 80-120 0.418 25 <br /> Cadmium 99.8 1.0 100 99.8 80-120 0.432 25 <br /> Chromium 94.0 1.0 100 94.0 80-120 1.20 25 <br /> Cobalt 100 5.0 100 100 80-120 0.409 25 <br /> Copper 94.8 2.0 100 94.8 80-120 0.179 25 <br /> Lead 94.8 1.0 100 94.8 80-120 1.06 25 <br /> Molybdenum 96.0 1.0 100 96.0 80-120 1.12 25 <br /> Nickel 93.6 1.0 100 93.6 80-120 1.23 25 <br /> Lead 94.8 1.0 100 94.8 80-120 1.06 25 <br /> Selenium 94.3 2.0 100 94.3 80-120 1.64 25 <br /> Silver 94.0 1.0 100 94.0 80-120 0.192 25 <br /> Thallium 101 2.0 100 101 80-120 0.597 25 <br /> Vanadium 94.4 2.0 100 94.4 80-120 0.0318 25 <br /> Zinc 92.0 2.0 100 92.0 80-120 0.961 25 <br /> Matrix Spike(A\B0155-MS1) Source:1802097-01 Prepared:02/15/18 Analyzed:02/19/18 <br /> Antimony 96.5 1.0 mg/kg 100 ND 96.5 75-125 <br /> Arsenic 98.5 1.0 100 0.960 97.6 75-125 <br /> Arsenic 98.5 1.0 100 0.960 97.6 75-125 <br /> Barium 358 2.0 100 289 68.7 75-125 QM-01 <br /> Beryllium 90.4 0.5 100 0.072 90.3 75-125 <br /> Cadmium 94.2 1.0 100 ND 94.2 75-125 <br /> Chromium 105 1.0 100 16.5 88.3 75-125 <br /> Cobalt 89.4 5.0 100 5.61 83.8 75-125 <br /> Copper 169 2.0 100 84.9 84.3 75-125 <br /> Lead 81.8 1.0 100 1.00 80.8 75-125 <br /> Molybdenum 91.5 1.0 100 0.729 90.8 75-125 <br /> Lead 81.8 1.0 100 1.00 80.8 75-125 <br /> Nickel 98.3 1.0 100 15.2 83.1 75-125 <br /> Selenium 91.5 2.0 100 ND 91.5 75-125 <br /> Silver 83.4 1.0 100 ND 83.4 75-125 <br /> Thallium 79.6 2.0 100 ND 79.6 75-125 <br /> Vanadium 102 2.0 100 24.4 77.7 75-125 <br /> Zinc 104 2.0 100 21.9 82.6 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 8 of 16 <br />