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Excelchem Environmental Labs <br /> DTE Stockton,LLC Project: Ash <br /> 2526 W.Washington St. Project Number: #4701180998 Date Reported: <br /> Stockton,CA 95203 Project Manager: Dan Crawford 06/12/18 17:39 <br /> STLC Metals-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AT0086-EPA 6010B <br /> Matrix Spike(A\F0086-MS1) Source:1806033-01 Prepared:06/11/18 Analyzed:06/12/18 <br /> Antimony 21.0 2.0 mg/L 20.0 0.003 105 75-125 <br /> Arsenic 22.5 0.2 20.0 0.321 111 75-125 <br /> Barium 21.8 0.4 20.0 1.72 100 75-125 <br /> Beryllium 19.6 0.1 20.0 0.002 98.0 75-125 <br /> Cadmium 20.2 0.2 20.0 0.012 101 75-125 <br /> Chromium 20.3 0.2 20.0 0.121 101 75-125 <br /> Cobalt 18.9 1.0 20.0 0.020 94.6 75-125 <br /> Copper 20.5 0.4 20.0 1.99 92.7 75-125 <br /> Lead 18.3 0.2 20.0 0.027 91.4 75-125 <br /> Molybdenum 20.4 0.2 20.0 0.054 102 75-125 <br /> Nickel 18.9 0.2 20.0 0.103 94.0 75-125 <br /> Selenium 21.8 0.4 20.0 ND 109 75-125 <br /> Silver 18.8 0.4 20.0 0.005 94.2 75-125 <br /> Thallium 17.8 0.4 20.0 ND 88.8 75-125 <br /> Vanadium 18.7 0.4 20.0 0.320 92.1 75-125 <br /> Zinc 31.4 0.4 20.0 11.2 101 75-125 <br /> Matrix Spike Dup(A\F0086-MSD1) Source:1806033-01 Prepared:06/11/18 Analyzed:06/12/18 <br /> Antimony 20.8 2.0 mg/L 20.0 0.003 104 75-125 1.15 25 <br /> Arsenic 22.4 0.2 20.0 0.321 110 75-125 0.401 25 <br /> Barium 21.6 0.4 20.0 1.72 99.2 75-125 1.02 25 <br /> Beryllium 19.5 0.1 20.0 0.002 97.4 75-125 0.614 25 <br /> Cadmium 20.0 0.2 20.0 0.012 100 75-125 0.647 25 <br /> Chromium 20.2 0.2 20.0 0.121 100 75-125 0.544 25 <br /> Cobalt 18.8 1.0 20.0 0.020 94.0 75-125 0.582 25 <br /> Copper 20.4 0.4 20.0 1.99 92.3 75-125 0.390 25 <br /> Lead 18.2 0.2 20.0 0.027 90.8 75-125 0.658 25 <br /> Molybdenum 20.4 0.2 20.0 0.054 102 75-125 0.0490 25 <br /> Nickel 18.9 0.2 20.0 0.103 94.1 75-125 0.0529 25 <br /> Selenium 21.6 0.4 20.0 ND 108 75-125 1.01 25 <br /> Silver 18.7 0.4 20.0 0.005 93.6 75-125 0.639 25 <br /> Thallium 17.7 0.4 20.0 ND 88.6 75-125 0.282 25 <br /> Vanadium 18.8 0.4 20.0 0.320 92.4 75-125 0.266 25 <br /> Zinc 31.3 0.4 20.0 11.2 100 75-125 0.446 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 II of 14 <br />