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�1 <br /> 1455 McDowell Blvd,North Sic D <br /> el� Sequoia Petaluma,CA 94954 <br /> (707)792 1865 <br /> Analytical FAX(707)792-0342 <br /> www sequoialabs com <br /> l <br /> Secor-Rancho Cordova Project Arco Site 4932,Stockton,CA P307150 <br /> 3017 Kilgare Road Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Protect Manager Rusty Benkosky 07/23/03 16 39 <br /> Total Petroleum Hydrocarbons as Gasoline by EPA 8015B-Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3070268-EPA 5030 waters <br /> Blank 3070268-BLK] Prepared&Analyzed 07/14/03 <br /> Gasoline Range Organics ND 50 ug/l <br /> Surrogate 4-Bromofluorobenzene 291 300 97 65-135 <br /> Laboratory Control Sample(3070268-BSI) Prepared&Analyzed 07/14/03 <br /> Gasoline Range Organics 2550 50 ug/I 2750 93 65-135 <br /> Surrogate 4-Bromofluorobenzene 313 300 104 65-135 <br /> Matrix Spike(3070268-MSI) Source P307150-05 Prepared&Analyzed 07/14/03 <br /> Gasoline Range Organics 2480 50 ugrl 2750 18 90 65-135 <br /> Surrogate 4-Bromofluorobenzene 311 300 104 65-135 <br /> Matrix Spike Du 3070268-MSD1 Source P307150-05 Prepared&Analyzed 07/14/03 <br /> �a-I ne Range Organics 2470 50 ug/l 2750 18 89 65-135 04 20 <br /> Surrogate 4-Bromofluorobenzene 303 300 101 65-135 <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 9 of 16 <br />