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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 05/17/18 18:09 <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 A\E0144-EPA 6010B <br /> LCS Dup(A\E0144-BSD1) Prepared&Analyzed:05/17/18 <br /> Antimony 20.0 2.0 mg/L 20.0 100 80-120 1.44 25 <br /> Arsenic 19.4 0.2 20.0 97.2 80-120 1.07 25 <br /> Barium 19.5 0.4 20.0 97.3 80-120 0.308 25 <br /> Beryllium 19.7 0.1 20.0 98.4 80-120 1.11 25 <br /> Cadmium 19.6 0.2 20.0 97.9 80-120 1.02 25 <br /> Chromium 19.4 0.2 20.0 97.0 80-120 1.18 25 <br /> Cobalt 19.6 1.0 20.0 98.2 80-120 1.01 25 <br /> Copper 19.1 0.4 20.0 95.4 80-120 1.15 25 <br /> Lead 19.7 0.2 20.0 98.4 80-120 0.911 25 <br /> Molybdenum 19.8 0.2 20.0 99.0 80-120 0.905 25 <br /> Nickel 19.7 0.2 20.0 98.6 80-120 0.958 25 <br /> Selenium 19.6 0.4 20.0 97.8 80-120 1.07 25 <br /> Silver 19.1 0.4 20.0 95.5 80-120 0.470 25 <br /> Thallium 19.9 0.4 20.0 99.5 80-120 1.05 25 <br /> Vanadium 19.3 0.4 20.0 96.7 80-120 0.978 25 <br /> Zinc 19.4 0.4 20.0 97.1 80-120 0.923 25 <br /> Matrix Spike(A\E0144-MS1) Source:1804163-01 Prepared&Analyzed:05/17/18 <br /> Antimony 20.5 2.0 mg/L 20.0 0.060 102 75-125 <br /> Arsenic 21.0 0.2 20.0 ND 105 75-125 <br /> Barium 21.4 0.4 20.0 2.18 96.1 75-125 <br /> Beryllium 19.6 0.1 20.0 0.002 97.8 75-125 <br /> Cadmium 19.9 0.2 20.0 0.004 99.5 75-125 <br /> Chromium 19.4 0.2 20.0 0.147 96.4 75-125 <br /> Cobalt 19.1 1.0 20.0 0.163 94.5 75-125 <br /> Copper 19.8 0.4 20.0 1.68 90.6 75-125 <br /> Lead 18.3 0.2 20.0 ND 91.4 75-125 <br /> Molybdenum 20.1 0.2 20.0 0.080 100 75-125 <br /> Nickel 18.9 0.2 20.0 0.199 93.6 75-125 <br /> Selenium 21.3 0.4 20.0 ND 107 75-125 <br /> Silver 18.5 0.4 20.0 0.0007 92.6 75-125 <br /> Thallium 17.5 0.4 20.0 ND 87.6 75-125 <br /> Vanadium 19.0 0.4 20.0 0.254 93.6 75-125 <br /> Zinc 20.1 0.4 20.0 0.466 98.0 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 II of 16 <br />