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�& Sequoia 14 55 CA 94954 4 <br /> _AnalyPdalump,CA91954tical - - - - - - - - - -- - - - - -- - - -- - - -FAX(707;79=-0965 — <br /> WWW sequoialabs cam <br /> ' Secor-Rancho Cordova Project Arco Site 4932,Stockton,CA P503205 <br /> 3017 Kilgare Road Suite 100 Project Number WR 63964 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/30/05 12 44 <br /> Purgeable Hydrocarbons by EPA 8015B- Quality Control <br /> Sequoia Analytical-Petalullla <br /> Reporting Spike Source %REC RPD <br /> Ntialyle Result Limit Units Level Result %.REC Limits RPD Limit Notes <br /> Batch 5030181-EPA 5030B,waters/EPA 801513-VOA <br /> ' Blank 5030I81-BLKl Prepared&Analyzed 4.3/17105 <br /> Gasoline Range Organics(C4-C12) ND 14 ppmv <br /> Gasoline Range Organics(C4 C12) ND 50 mg/ml Air <br /> Surrogate 4 Bromofluoroburzene 376 ppmv 419 90 65-135 <br /> Surrogate d Brom0 luarobenzene 269 mg/m'Air 300 90 6S-135 <br /> Laboratory Control Sample(5030181-SSI) Prepared&Analyzed 03/17/05 <br /> Gasoline Range Organics(C4-C12) 2150 50 mg/m'Arc 2750 78 65-135 T <br /> ' Gasoline Range Organics(C4-C12) 610 14 ppmv 780 78 65-135 <br /> Surrogate 4 Bromofluorobenzene 413 419 101 65-135 <br /> Surrogate 4 Bromofluorobenzene 303 mg/in'Air 300 101 65-135 <br /> M Laboratory Control Sample Dip(503018.1-BSD!) Prepared&Analyzed 03/17/05 <br /> Gasoline Range Orgarrics(C4 C12) 593 14 ppmv 780 76 65-135 3 20 <br /> Gasoline Range Organics(C4-C 12) 2090 50 mg/ml Air 2750 76 65-135 3 20 <br /> Surrogate 4-Bromgr7uorobenzene 422 ppmv 419 101 65-135 <br /> Surrogate 4-Brmw luorobenzene 302 meneAir 300 101 65-13S <br /> Batch 5030215-EPA 50368 waters 1 EPA 9015B-VOA <br /> Bla 0030215-BLKI) -- Prepared&Ana!ynd 03/21/05 <br /> Gasol int:Range Organics(C4-C 12) ND — 5o u8✓1 <br /> Sirrogait 4 Brur mjluorobeiizene 269 300 90 80-110 <br /> Laboratory Control Sample(5030215-BSI) Prepared&Analyzed 03/2 1/05 <br /> Gasoline Range Organics(C4-C]2) 2850 So ug/I 2750 - 104 609-120 <br /> Surrogate 4 Bronrofluvrobemene 290 300 97 80-110 <br /> Sequoia Analytical-Petaluma M results in this report apply to the samples analyzed in accordance with the chain of <br /> curtody document Unlers otherwise stated,reavlu Are reported on a wet weigh(bate <br /> Thin analytical report must be reproduced in its entirety <br /> Page 12 of 20 <br />