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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 03/08/17 14:02 <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[C0009-EPA 6010B <br /> Blank(A[C0009-BLK1) Prepared:03/01/17 Analyzed:03/03/17 <br /> Arsenic ND 1.0 mg/kg <br /> Lead ND 1.0 " <br /> LCS(A[C0009-BSI) Prepared:03/01/17 Analyzed:03/03/17 <br /> Arsenic 96.7 1.0 mg/kg 100 96.7 80-120 <br /> Lead 97.8 1.0 100 97.8 80-120 <br /> LCS Dup(A[C0009-BSD1) Prepared:03/01/17 Analyzed:03/03/17 <br /> Arsenic 95.1 1.0 mg/kg 100 95.1 80-120 1.62 25 <br /> Lead 96.3 1.0 100 96.3 80-120 1.49 25 <br /> Matrix Spike(A[C0009-MS1) Source:1702136-01 Prepared:03/01/17 Analyzed:03/03/17 <br /> Arsenic 112 1.0 mg/kg 100 25.5 86.7 75-125 <br /> Lead 118 1.0 100 44.8 73.6 75-125 QL-01 <br /> Matrix Spike Dup(A[C0009-MSD1) Source:1702136-01 Prepared:03/01/17 Analyzed:03/03/17 <br /> Arsenic 113 1.0 mg/kg 100 25.5 87.3 75-125 0.533 25 <br /> Lead 139 1.0 " 100 44.8 93.8 75-125 15.7 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 9 of It <br />