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4D (40885 Jarvis Drive <br /> Sequoia Morgan Hill CA 95037 <br /> { <br /> 8)776 9600 <br /> Analytical FAX(408)7826308 <br /> J www sequoialabs cam <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MNA0375 <br /> 3017 Kilgore Rd Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 01/28/04 16 50 <br /> Purgeable Hydrocarbons by EPA 8015D-Quahty 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 4010312-EPA 5030B waters <br /> Blank(4010312-BLK1) Pre ared&Analyzed 01/19/04 <br /> Gasoline Range Organics ND 50 ug/1 <br /> Surrogate 4-Bromofluorobenzene 311 300 104 65-135 <br /> Laboratory Control Sample 4010312-BSl Prepared&Analyzed 01/19/04 <br /> Gasoline Range Organics 2140 50 ug/l 2750 78 65-135 <br /> Surrogate 4-Bromofluorobenzene 319 11300 106 65 135 <br /> Matnx Spike 4010312-MS1 Source P401188-02 Prepared&Analyzed 01/19/04 <br /> Gasoline Range Organics 3020 50 USA 2750 950 75 65-135 <br /> Surrogate 4-Bromofluorobenzene 314 300 108 65-135 <br /> Matrix Spike Dup(4010312-MSD1) Source P401188-02 Prepared&Analyzed 01/19/04 _ <br /> Gasoline Range Orgamcs 3060 50 ug/I 2750 950 77 65-135 1 20 <br /> Surrogate 4-Bromofluorobenzene 310 300 107 65-135 <br /> Batch 40110335-EPA 50308 waters <br /> Blank(4010335-BLK1) Prepared&Analyzed 01/20/04 <br /> Gasoline Range Organics ND 50 ugll <br /> Surrogate 4-Bromofluorobenzene 296 300 99 65-13S <br /> Laboratory Control Sample(4010335-BSI) Prepared&Analyzed 01/20/04 <br /> Gasoline Range Organics 2530 50 u9/1 2750 92 65-t35 <br /> Surrogate 4-Bromofluorobenzene 315 300 105 65-135 <br /> _Matrix Spike(4010335-MSI) Source ?dNA0375-10 Prepared&Analyzed 01/20/04 <br /> Gasoline Range Organics 2460 50 ug/l 2750 25 89 65-135 <br /> Surrogate 4-Bromofluorobenzene 306 300 101 65-135 <br /> Sequota Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated,results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 17 of 30 <br /> 1� <br />