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• 1455 McDowell Blvd North Ste D <br /> ' � <br /> Sequoia Petaluma,C9 44954 <br /> T�iM�".'!` 1FAX(707)792 1865 <br /> Analytical www <br /> labsco2 <br /> www sequoiafabs coni <br /> URS Corp-Sacramento Project Arco Site 760,Lodi,CA P410096 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36622 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 10/20/04 17 30 <br /> Purgeable Hydrocarbons by EPA 8015B - Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limn Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4100231 -EPA 50306,waters I EPA 8015B-VOA <br /> Blank(4100231-BLK1) Prepared&Analyzed 10/11/04 <br /> Gasoline Range Organics(C4-C 12) ND 50 ugll <br /> Surrogate 4-Bromofluorobenzene 295 300 98 804-110 <br /> Laboratory Control Sample(4100231-BS1) Prepared&Analyzed 10/11/04 <br /> Gasoline Range Organics(C4 C12) 2710 50 ugll 2750 99 67-101 <br /> Surrogate 4-Bromofluorobenzene 309 300 103 804-110 <br /> Matrix Spike(4100231-MSI) Source P410128-04 Prepared&Analyzed 10/11/04 <br /> Gasoline Range Organics(C4 C 12) 2690 50 ugll 2750 ND 98 67-101 <br /> Surrogate 4-BromofJuorobenzene 318 300 106 804-110 <br /> Matrix Spike Dup(4100231-MSDI) Source P410128-04 Prepared&Analyzed 10/11/04 <br /> dw ohne Range Organics(C4-C 12) 2530 50 ug/l 2750 ND 92 67-101 6 20 <br /> rrogate 4-Bromofluorobenzene 289 300 96 804-110 <br /> Sequoia Analytical -Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> 0 This analytical report must be reproduced in its entirety <br /> Page 6of11 <br />