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�!(,Y <br /> Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma,CA 94954 <br /> (707)792-1865 <br /> a— ) <br /> WAnalytical FAX(707)792-0342 <br /> www sequoialabs com <br /> URS Corp-Sacramento Project Arco Site 760,Lodi,CA P401360 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number VWR36622 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/06/04 09 57 <br /> Purgeable Hydrocarbons by EPA 8015B- Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lima Units Level Result %REC Limits RPA Limit Notes <br /> Batch 4010528-EPA 5030B waters <br /> Blank 4010528-BLK1 Prc ared&Analyzed 01/28/04 <br /> Gasoline Range Organics ND 50 ug/l <br /> Surrogate 4-Bromofluorobenzene 289 300 96 65-135 <br /> Laboratory Control Sample(4010528-BSI) Prepared&Analyzed 01/28/04 <br /> Gasoline Range Organics 2480 50 ug/l 2750 90 65-135 <br /> Surrogate 4-Bromofluorobenzene 313 300 104 65-135 <br /> Matnx Spike 4010528-MSI Source P401357-01 Prepared&Analyzed 01/28/04 <br /> Gasoline Range Organics 2650 50 ug/I 2750 150 91 65-135 <br /> Surrogate 4-Bromofluorobenzene 312 300 104 65-135 <br /> Matrix Spike Du 4010528-MSD/ Source P401357-01 Prepared&Analyzed 01/28/04 <br /> Gasoline Range Organics 2560 50 ugll 2750 150 88 65-135 3 20 <br /> urrogate 4-Bromofluorobenzene 311 300 104 65-135 <br /> i <br /> I <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> ojcustody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 6 of 9 <br />