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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 15:07 <br /> Total Recoverable Metals-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch A[B0027-EPA 6010B <br /> Blank(A[B0027-BLKI) Prepared:01/27/17 Analyzed:02/03/17 <br /> Arsenic ND 1.0 mg/kg <br /> Lead ND 1.0 " <br /> LCS(A[B0027-BS1) Prepared:01/27/17 Analyzed:02/03/17 <br /> Arsenic 94.4 1.0 mg/kg 100 94.4 80-120 <br /> Lead 97.7 1.0 100 97.7 80-120 <br /> LCS Dup(A[B0027-BSD1) Prepared:01/27/17 Analyzed:02/03/17 <br /> Arsenic 95.5 1.0 mg/kg 100 95.5 80-120 1.20 25 <br /> Lead 98.5 1.0 100 98.5 80-120 0.816 25 <br /> Matrix Spike(A[B0027-MS1) Source:1701110-01 Prepared:01/27/17 Analyzed:02/03/17 <br /> Arsenic 126 1.0 mg/kg 100 41.0 85.0 75-125 <br /> Lead 437 1.0 100 391 45.8 75-125 QL-01 <br /> Matrix Spike Dup(A[B0027-MSD1) Source:1701110-01 Prepared:01/27/17 Analyzed:02/03/17 <br /> Arsenic 124 1.0 mg/kg 100 41.0 82.7 75-125 1.84 25 <br /> Lead 476 1.0 " 100 391 85.3 75-125 8.66 25 <br /> EXcelchenl 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 7 of <br />