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Sequoia 1455 McDowell Blvd North Ste D <br /> Analytical Petaluma,CA 94954 <br /> (707) 792 1865 <br /> 0 FAX(707) 792 0342 <br /> www sequoialabs com <br /> [Rancho <br /> or-Rancho Cordova <br /> 71Cilgare Road Surte ]OQ Protect Arco Site 4932,Stockton,CA <br /> Project Number (none) 1312141 <br /> Cordova CA,95670 Reported <br /> Project Manager Rusty Benkosky 12/22/03 14 28 <br /> Purgeable Hydrocarbons by EPA 8015B- Quality Control <br /> Sequoia Analytical-Petaluma <br /> Analyte Reporting Spike Source %PEC <br /> RAD <br /> Result Limit Units <br /> Level Result %REC Limits RPD Limit Notes <br /> Batch 3120317-EPA 5030B,waters <br /> Blank 3120317-BLK1) <br /> Gasoline Range OrganicsND 50 ug/1 Pre ared&Anal zed 12/11/03 <br /> Surrogate 4-Bromofluorobenzene 312 „ <br /> 300 104 65-135 <br /> Laborata y Control Salmirils,1111tral7-BS1 <br /> Gasoline Range Organics <br /> Prepared&Analyzed 12/11/03 <br /> 2500 50 ug/l 2750 91 65-135 <br /> Surrogate 4 Bromofluorobenzene 338 » <br /> 300 113 65-135 <br /> Matrix Spike 3120317-MS1 Source 1312121-01 Pre ared&Anal zed 12/1 1/03 <br /> Gasoline Range Organtcs 2500 <br /> 50 ug/! 2750 ND 91 65-135 <br /> Surrogate 4-Bromofluorobenzene 344 <br /> 11 300 115 65-135 <br /> Matrix Spike Dv 3120317-MSD1 i ource P312121-0I <br /> Prepared&Anal zed 12/11/03 <br /> asoline Range Organics 2500 <br /> 50 ug/1 2750 ND 91 65-135 0 20 <br /> arrogate 4-Bromofluorobenzene 337 <br /> 300 112 65-135 <br /> Batch 3120359-EPA 503013waters <br /> Blank 3120359-BLKI <br /> Pre ared&Anal zed <br /> Gasoline Range Organics ND 50 ug/1 12/12/03 <br /> Surrogate 4 Bromofluorobenzene 262 „ <br /> 300 87 65-135 <br /> Laboratory Control Sam le 3120359-BS1 <br /> Prepared&Anal zed 12/12/03 <br /> Gasoline Range Organics 2 2170 <br /> 50 ug/l 2750 79 65-135 <br /> Surrogate 4-Bromofluorobenzene 283 „ <br /> 300 94 65-135 <br /> Matrix Spike 3120359-MS1 Source P312047-01 Prepare I&Anal zed 12/12/03 <br /> Gasoline Range Organics 2380 50 ug/! 2750 25 <br /> 86 65-135 <br /> Surrogate 4-Bromof]'uorobenzene 292 „ <br /> 300 97 65-135 <br /> 40equata Analytical-Petaluma p pp The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise slated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 9 of 16 <br />