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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 02/07/17 15:08 <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[B0026-EPA 6010B <br /> Blank(A[B0026-BLKI) Prepared:01/20/17 Analyzed:02/03/17 <br /> Arsenic ND 0.2 mg/L <br /> Lead ND 0.2 11 <br /> LCS(A[B0026-BS1) Prepared:01/20/17 Analyzed:02/03/17 <br /> Arsenic 18.2 0.2 mg/L 20.0 91.0 80-120 <br /> Lead 16.9 0.2 20.0 84.6 80-120 <br /> LCS Dup(A[B0026-BSDI) Prepared:01/20/17 Analyzed:02/03/17 <br /> Arsenic 20.5 0.2 mg/L 20.0 102 80-120 11.8 25 <br /> Lead 19.1 0.2 20.0 95.6 80-120 12.3 25 <br /> Matrix Spike(A[B0026-MS1) Source:1701073-02 Prepared:01/20/17 Analyzed:02/03/17 <br /> Arsenic 22.6 0.2 mg/L 20.0 2.01 103 75-125 <br /> Lead 18.1 0.2 20.0 0.136 90.0 75-125 <br /> Matrix Spike Dup(A[B0026-MSD1) Source:1701073-02 Prepared:01/20/17 Analyzed:02/03/17 <br /> Arsenic 23.3 0.2 mg/L 20.0 2.01 107 75-125 3.00 25 <br /> Lead 18.0 0.2 11 20.0 0.136 89.3 75-125 0.720 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 16 of 17 <br />