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SunStar 25712 Commercentre Drive <br /> Laboratories, Inc. Lake Forest,California 92630 <br /> PROVIO[NO QUALITY ANALYTICAL SEMcus NATIo"= 949.297.5020 Phone <br /> 949.297.5027 Fax <br /> ' PSI--Oakland Project: Farmington-Tank Pull <br /> 4703 Tidewater Ave Ste B Project Number: 575-352-1 Reported: <br /> Oakland CA,94601 Project Manager: Frank Poss 11/04/11 16:55 <br /> ' Cold Vapor Extraction EPA 7470/7471 - Quality Control <br /> SunStar Laboratories, Inc. <br /> ' Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1102835-EPA 7471A Soil <br /> ' Blank(1102835-BLKI) _ Prepared: 10/28/11 _Analyzed: 11/01/11 <br /> Mercury ND 0.10 mg/kg <br /> LCS(1102835-BS1) Prepared: 10/28/11 Analyzed: 11/01/11 <br /> ' Mercury 0.460 0.10 mg/kg 0.417 110 80-120 <br /> Matrix Spike(1102835-MSI) Source:T111593.10 Prepared: 10/28/11 Analyzed: 11/01/11 <br /> ' M=my 0.530 0.10 mg/kg 0.417 ND 127 75-125 QM-07 Matrix Spike Dup(1102835-MSD1) Source:T111593-10 Prepared: 10/28/11 Analyzed: 11/01/11 <br /> Mercury 0.529 0.10 mg/kg 0.417 ND 127 75-125 0.220 20 QM-07 <br /> Batch 1103119-EPA 7471A Soil <br /> Blank(1103119-BLKI) Prepared: 10/31/11 Analyzed: 11/01/11 <br /> Mercury ND 0.10 mg/kg <br /> ' LCS(1103119-BS1) Prepared: 10/31/11 Analyzed: 11/01/11 <br /> Mercury 0.385 0.10 mg/kg 0.417 92.3 80-120 <br /> ' LCS Dup(1103119-BSDI) Prepared: 10/31/11 Analyzed: 11/01/11 <br /> Mercury 0.477 0.10 mg/kg 0.417 114 80-120 21.4 20 QR-02 <br /> 1 <br /> SunStar Laboratories,Inc. The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Wendy Hsiao,Project Manager Page 31 of 36 <br />