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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 11/13/17 17:56 <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[K0080-EPA 6010B <br /> Matrix Spike(A[K0080-MS1) Source:1711054-01 Prepared: 11/10/17 Analyzed: 11/13/17 <br /> Antimony 42.9 1.0 mg/kg 100 1.04 41.8 75-125 QM-01 <br /> Arsenic 123 1.0 100 19.0 104 75-125 <br /> Arsenic 123 1.0 100 19.0 104 75-125 <br /> Barium 484 2.0 100 381 103 75-125 <br /> Beryllium 97.9 0.5 100 0.122 97.8 75-125 <br /> Cadmium 100 1.0 100 1.36 98.8 75-125 <br /> Chromium 121 1.0 100 26.1 94.8 75-125 <br /> Cobalt 94.9 5.0 100 6.03 88.8 75-125 <br /> Copper 258 2.0 100 174 83.8 75-125 <br /> Lead 130 1.0 100 42.9 87.4 75-125 <br /> Molybdenum 96.6 1.0 100 2.26 94.3 75-125 <br /> Nickel 107 1.0 100 18.5 88.6 75-125 <br /> Lead 130 1.0 100 42.9 87.4 75-125 <br /> Selenium 97.4 2.0 100 ND 97.4 75-125 <br /> Silver 98.3 1.0 100 0.196 98.1 75-125 <br /> Thallium 80.9 2.0 100 ND 80.9 75-125 <br /> Vanadium 126 2.0 100 34.1 91.4 75-125 <br /> Zinc 391 2.0 100 298 93.0 75-125 <br /> Matrix Spike Dup(A[K0080-MSD1) Source:1711054-01 Prepared:11/10/17 Analyzed: 11/13/17 <br /> Antimony 40.5 1.0 mg/kg 100 1.04 39.4 75-125 5.78 25 QM-01 <br /> Arsenic 113 1.0 100 19.0 94.3 75-125 8.21 25 <br /> Arsenic 113 1.0 100 19.0 94.3 75-125 8.21 25 <br /> Barium 443 2.0 100 381 62.1 75-125 8.84 25 QM-01 <br /> Beryllium 91.6 0.5 100 0.122 91.4 75-125 6.70 25 <br /> Cadmium 93.1 1.0 100 1.36 91.8 75-125 7.32 25 <br /> Chromium 112 1.0 100 26.1 85.7 75-125 7.82 25 <br /> Cobalt 88.5 5.0 100 6.03 82.4 75-125 6.96 25 <br /> Copper 238 2.0 100 174 64.0 75-125 7.99 25 QM-01 <br /> Lead 114 1.0 100 42.9 71.0 75-125 13.4 25 QM-01 <br /> Molybdenum 90.0 1.0 100 2.26 87.7 75-125 7.14 25 <br /> Nickel 98.2 1.0 100 18.5 79.7 75-125 8.65 25 <br /> Lead 114 1.0 100 42.9 71.0 75-125 13.4 25 QM-01 <br /> Selenium 89.8 2.0 100 ND 89.8 75-125 8.17 25 <br /> Silver 92.5 1.0 100 0.196 92.3 75-125 6.09 25 <br /> Thallium 76.4 2.0 100 ND 76.4 75-125 5.72 25 <br /> Vanadium 118 2.0 100 34.1 83.7 75-125 6.33 25 <br /> Zinc 344 2.0 100 298 46.3 75-125 12.7 25 QM-01 <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 />