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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 Poss 0 t/30/08 13:51 <br /> Purgeable Petroleum Hydrocarbons by EPA 8015B-Quality Control <br /> SunStar Laboratories,Inc. <br /> ' Reporting Spike Source %PEC RPD <br /> Analyte Result Limit Units Level Result °%REC Limits RPD Limit Notes <br /> Batch 8012903-EPA 5030 GC <br /> ' Blank(8012903-BLKI) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-Bromofluorobenzene 267 119/1 200 133 65-135 <br /> C6-C12(GRO) ND 50 " <br /> LCS(8012903-BSI) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-BromoJluorobemene 256 ug/I 200 128 65-135 <br /> C&C 12(GRO) 6060 50 5500 110 75-125 <br /> LCS Dup(8012903-BSDI) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-BromoJluorobemene 250 ug/I 200 125 65-135 <br /> C&C 12(GRO) 6160 50 5500 112 75-125 1.70 20 <br /> Batch 8012904-EPA 5030 GC <br /> Blank(8012904-BLKI) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-Bromofluorobenzene 675 ug/kg 500 135 65-135 <br /> C6-C12(GRO) ND 500 1. <br /> LCS(8012904-BS1) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-BromoJluorobomene 593 ug/kg 500 119 65-135 <br /> C6-Cl2(GRO) 13300 500 13800 96.7 75-125 <br /> LCS Dup(8012904-BSDI) Prepared&Analyzed:01/29/08 <br /> Surrogate:4-Bromofluorobenzene 666 ug/kg 500 133 65-135 <br /> C6-C12(GRO) 14400 500 13800 105 75-125 7.99 20 <br /> i <br /> SunStar Laboratories,Inc. The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety. <br /> Albert Vargas For John Shepler,Laboratory Director Page 16 of 24 <br />