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_ I n ISI J li <br /> 4 lit 171 4 <br /> (707)792-1S6�) <br /> q b � f-1X(707)792 0342 <br /> se ju011l ih coin <br /> URS Corp-Sacramento Project Alco Site 6100, Tracy CA P403162 <br /> 2870 Gateway Oaks Diive Suite 300Project Number WR36619 Repotted <br /> Sacramento CA 95833 Project Manager Jay Johnson 03111/04 11 36 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Anahte Result Limit Units Dilution Batch Prepared Anal)zed Method Notes <br /> 6100 1 INF 3904(P403162-01)Air Sampled 03/09/04 11 30 Received 03/10/04 10 00 <br /> Gasoline R1nge Ot gantcs (C6-C10) 2300 250 mg/m'Air 5 4030228 03/10/04 03/10/04 EPA <br /> 80158/80213 <br /> Benzene 12 25 " " " QR-04 <br /> Toluene 72 25 " <br /> QR-04 <br /> Ethylbenzene ND 2 5 <br /> Xylenes (total) 41 2 5 " <br /> Methyl tert-butyl ether 51 10 " <br /> Sut rogate a,a a-Trrfluorotoluene 106% 65435 " <br /> .Stu rogate 4-Bromgfluoi obenzene 97% 65-135 " <br /> Gasoline Range Org inics (C6-CIO) Soo 71 ppmv 5 " <br /> Benzene 3 6 0 80 QR-04 <br /> Toluene 19 065 " " " " QR-04 <br /> Ethylbenzene ND 060 " <br /> AftenesW <br /> (total) 9 5 060 thyl tert-butyl ether 14 2 8 " <br /> Sta rogate a a a-Trtfluorotoluene 106% 65-135 <br /> Stu rogate 4-Bi otnofluw oben_ene 97 Ya 65-135 <br /> 6100 1 EFF 3904(P403162-02) kir Sampled 03/09/04 1128 Receitied 03/10/0410 00 <br /> Gasoline Range Organics(C6-CIO) 28 10 ma/m'Air 0 2 4030228 03/10/04 03/10/04 EPA <br /> 801513/802113 <br /> Benzene 031 0 10 " " <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 " <br /> Xylenes(total) ND 0 10 " <br /> Metliy I tert-butyl ether 041 0 40 " <br /> Suri agate a a a-Ti<fluaratoluene 100 0 65-135 <br /> Surrogate 4-Bronzofluorobenzene 95 a/o 65-135 " <br /> Gasoline Range Organics (C6-CIO) 8 1 2 8 ppm-, 0 2 <br /> Benzene 0 096 0 032 <br /> Toluene ND 0 026 " <br /> Ethylbenzene ND 0 024 <br /> Xylenes(total) ND 0 024 " <br /> 1yIethyl tert-butyl ether 0 11 0 11 " <br /> Stu rogate a a a-Ti rfluorotoluene 100 a/o 65-135 <br /> Sztri ogate 4-Bromofluot oben:;ene 95/o 65-135 " <br /> oia Anal-,tical -Petaluma The)esztlts in this i eport apph,to the samples analyced in accoi dance with the chain <br /> of custody document Unless otherivise stated t esztlts are t epoi ted on a wer weight <br /> basis This analytical i epor t mast be t epi oduced in its entirety) <br /> Page 3 oP6 <br />