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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 02/08/17 17:54 <br /> STLC Analysis-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch A[B0051-EPA 6010B <br /> Blank(A[B0051-BLKI) Prepared:02/06/17 Analyzed:02/07/17 <br /> Arsenic ND 0.2 mg/L <br /> Lead ND 0.2 11 <br /> LCS(A[B0051-BS1) Prepared:02/06/17 Analyzed:02/07/17 <br /> Arsenic 20.8 0.2 mg/L 20.0 104 80-120 <br /> Lead 19.1 0.2 20.0 95.4 80-120 <br /> LCS Dup(A[B0051-BSDI) Prepared:02/06/17 Analyzed:02/07/17 <br /> Arsenic 20.8 0.2 mg/L 20.0 104 80-120 0.00 25 <br /> Lead 19.1 0.2 20.0 95.4 80-120 0.00 25 <br /> Matrix Spike(A[B0051-MS1) Source:1702002-01 Prepared:02/06/17 Analyzed:02/07/17 <br /> Arsenic 22.4 0.2 mg/L 20.0 1.54 104 75-125 <br /> Lead 19.0 0.2 20.0 0.470 92.9 75-125 <br /> Matrix Spike Dup(A[B0051-MSD1) Source:1702002-01 Prepared:02/06/17 Analyzed:02/07/17 <br /> Arsenic 23.0 0.2 mg/L 20.0 1.54 107 75-125 2.65 25 <br /> Lead 19.0 0.2 11 20.0 0.470 92.9 75-125 0.00 25 <br /> EXcelchem.Environmental Lab. The results in this report apply to the samples analyzed in accordance with the chain of <br /> y custody document.This analytical report must be reproduced in its entirety. <br /> Laboratory Representative Page 6 of <br />