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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 /> 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[A0122-EPA 6010B <br /> Blank(A[A0122-BLK1) Prepared:01/20/17 Analyzed:01/23/17 <br /> Arsenic ND 1.0 mg/kg <br /> Lead ND 1.0 " <br /> LCS(A[A0122-BSI) Prepared:01/20/17 Analyzed:01/23/17 <br /> Arsenic 94.0 1.0 mg/kg 100 94.0 80-120 <br /> Lead 98.9 1.0 100 98.9 80-120 <br /> LCS Dup(A[A0122-BSD1) Prepared:01/20/17 Analyzed:01/23/17 <br /> Arsenic 101 1.0 mg/kg 100 101 80-120 6.80 25 <br /> Lead 106 1.0 100 106 80-120 6.62 25 <br /> Matrix Spike(A[A0122-MS1) Source:1701084-01 Prepared:01/20/17 Analyzed:01/23/17 <br /> Arsenic 96.1 1.0 mg/kg 100 3.33 92.8 75-125 <br /> Lead 89.6 1.0 100 3.54 86.0 75-125 <br /> Matrix Spike Dup(A[A0122-MSD1) Source:1701084-01 Prepared:01/20/17 Analyzed:01/23/17 <br /> Arsenic 94.6 1.0 mg/kg 100 3.33 91.3 75-125 1.62 25 <br /> Lead 88.3 1.0 " 100 3.54 84.8 75-125 1.39 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 15 of 17 <br />