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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 06/07/18 16:27 <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 AT0044-EPA 6010B <br /> Matrix Spike(A\F0044-MS1) Source:1806007-01 Prepared&Analyzed:06/06/18 <br /> Antimony 21.1 2.0 mg/L 20.0 0.031 105 75-125 <br /> Arsenic 21.8 0.2 20.0 0.354 107 75-125 <br /> Barium 26.5 0.4 20.0 6.66 99.0 75-125 <br /> Beryllium 19.1 0.1 20.0 0.004 95.3 75-125 <br /> Cadmium 20.6 0.2 20.0 0.014 103 75-125 <br /> Chromium 20.3 0.2 20.0 0.537 98.9 75-125 <br /> Cobalt 19.0 1.0 20.0 0.125 94.3 75-125 <br /> Copper 24.4 0.4 20.0 5.21 95.7 75-125 <br /> Lead 19.4 0.2 20.0 1.19 91.1 75-125 <br /> Molybdenum 20.5 0.2 20.0 0.078 102 75-125 <br /> Nickel 19.2 0.2 20.0 0.654 92.5 75-125 <br /> Selenium 21.2 0.4 20.0 0.003 106 75-125 <br /> Silver 18.9 0.4 20.0 ND 94.6 75-125 <br /> Thallium 17.8 0.4 20.0 ND 88.9 75-125 <br /> Vanadium 18.9 0.4 20.0 0.584 91.5 75-125 <br /> Zinc 20.6 0.4 20.0 1.66 94.6 75-125 <br /> Matrix Spike Dup(A\F0044-MSD1) Source:1806007-01 Prepared&Analyzed:06/06/18 <br /> Antimony 21.2 2.0 mg/L 20.0 0.031 106 75-125 0.521 25 <br /> Arsenic 21.9 0.2 20.0 0.354 108 75-125 0.504 25 <br /> Barium 26.5 0.4 20.0 6.66 99.0 75-125 0.0378 25 <br /> Beryllium 19.1 0.1 20.0 0.004 95.7 75-125 0.419 25 <br /> Cadmium 20.7 0.2 20.0 0.014 104 75-125 0.775 25 <br /> Chromium 20.5 0.2 20.0 0.537 99.6 75-125 0.687 25 <br /> Cobalt 19.1 1.0 20.0 0.125 94.9 75-125 0.630 25 <br /> Copper 24.5 0.4 20.0 5.21 96.5 75-125 0.655 25 <br /> Lead 19.6 0.2 20.0 1.19 91.9 75-125 0.872 25 <br /> Molybdenum 20.7 0.2 20.0 0.078 103 75-125 0.922 25 <br /> Nickel 19.3 0.2 20.0 0.654 93.1 75-125 0.572 25 <br /> Selenium 21.4 0.4 20.0 0.003 107 75-125 0.798 25 <br /> Silver 18.9 0.4 20.0 ND 94.4 75-125 0.317 25 <br /> Thallium 18.0 0.4 20.0 ND 89.9 75-125 1.12 25 <br /> Vanadium 18.9 0.4 20.0 0.584 91.8 75-125 0.317 25 <br /> Zinc 20.8 0.4 20.0 1.66 95.6 75-125 1.02 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 />