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PSI--Oakland Project: Interra Development <br /> 4703 Tidewater Ave Ste B Project Number: 865-86002 Reported: <br /> Oakland CA,94601 Project Manager: Frank Pose 01/30/08 13:51 <br /> ' Extractable Petroleum Hydrocarbons by 8O15B-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 8012801-EPA 355OB GC <br /> Blank(8012801-BLKI) Prepared&Analyzed:0128/08 <br /> Surrogate:p-Terphnryl 95.9 mg/kg 100 95.9 65-135 <br /> C6-C12(GRO) ND 10 " <br /> C13-C28(DRO) ND 10 '1 <br /> C29-C40(MORO) ND 10 <br /> LCS(8012801-BS1) Prepared&Analyzed:01/28/08 <br /> Surrogate:p-Terpheny/ 97.7 mg/kg 100 97.7 65-135 <br /> CI3-C28(DRO) 490 10 500 97.2 75-125 <br /> Matrix Spike(8012801-MSI) Source:T800116.02 Prepared&Analyzed:0128/08 <br /> Surrogate:p-Terphenyl 97.2 mg/kg /00 97.2 65-135 <br /> C13-C28(DRO) 470 10 500 29 87.8 75-125 <br /> Matrix Spike Dup(8012801-MSDI) Source:T800116-02 Prepared&Analyzed:01/28/08 <br /> Surrogate:p-Terphenyl 80.6 mg/kg 100 80.6 65-135 <br /> C13-C28(DRO) 420 10 500 29 78.3 75-125 10.7 20 <br /> Batch 8012802-EPA 351OC GC <br /> Blank(8012802-BLKS) Prepared&Analyzed:01/28/08 <br /> Surrogate:p-Terpheny/ 3.48 m9/7 4.00 87.0 65-135 <br /> Diesel Range Hydrocarbons ND 0.50 " <br /> ' LCS(8012802-BS1) Prepared&Analyzed:01/28/08 <br /> Surrogate:p-Terpheny/ 3.97 mg/I 4.00 99.2 65-135 <br /> Diesel Range Hydrocarbons 18.1 0.50 20.0 90.3 75-125 <br /> i <br /> tSunStar 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 /> Albert Vargas For John Shepley, Laboratory Director Page 17 of 24 <br /> 1 <br />