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I.,. i t �� t -3 I,. rlll3 it L v=+_4 <br /> (707)792 1 s6D <br /> wet 1-C4..d r s k 1707 1 793 03 F? <br /> -� - �« ` sequarallhscnm <br /> URS Corp-Sacramento Project Arco Site 6100 Tracy CA P403161 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36619 Reported <br /> Sacramento CA, 95833 Project Manager Jay Johnson 03/11/04 11 27 <br /> Purgeable Hvdrocarbons and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared AnaIvzed Method Notes <br /> 6100 2 INF 3904(P403161-01)Air S tmpled 03/09/04 11 24 Recerc ed 03/10/04 i0 00 <br /> Gasoline Range Organics (C6-C10) 2500 250 mg/ml Air 5 4030228 03/10/04 03/10/04 EPA <br /> 8015B/8021B <br /> Benzene 25 25 " " " " QR-04 <br /> Toluene 33 2 5 <br /> Ethylbenzene 26 2 5 <br /> Xylenes(total) 16 2 5 " <br /> Alethyl tert-butyl ether 35 10 QR-04 <br /> Surrogate a a a-Trifluorotoluene 1000/0 65-135 <br /> Surrogate 4-8romofluoroben eiw 101 % 65-135 " <br /> Gasoline Range Organics (C6-C10) 720 71 ppmv 5 " <br /> Benzene 78 0 80 QR-04 <br /> Toluene 89 065 <br /> Ethylbenzene ND 060 " <br /> Wteves(tot'll) 36 060 <br /> hyl tert-butyl ether 97 28 QR-04 <br /> Suri ogate a,a a-Trifluorotcluene 100% 65-135 " <br /> Sur t ogate 4-Bromofluoi obenzene 101 % 65-135 <br /> 6100 2 EFF 3904(P403161-02) A,ir Sampled 031091041122 Received 03/10/04 10 00 <br /> Gasoline Range Organics(C6-CIO) ND 10 mg/nn'Air 02 4030228 03/10/04 03/10/04 EPA <br /> 80158/8021B <br /> Benzene ND 010 " <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 " <br /> Xylenes(total) ND 0 1 " <br /> 1Vlethvl tert-butyl ether ND 040 " <br /> Stu rogate a u a-Trifluorotoluene 95% 65-135 <br /> Szarogate 4-Bromofluoioben_ene 95% 65-135 " <br /> Gasoline Ranee Organics(C6-CIO) ND 2 8 ppmv 0 2 <br /> Benzene ND 0 032 <br /> Toluene ND 0 026 " <br /> Ethylbenzene ND 0 024 <br /> Xylenes(total) ND 0 024 " <br /> Methyl tert-butyl ether ND 0 11 " <br /> Sza rogate a a a-Trifluor otoluene 9.5% 65-135 " <br /> Sirs i agate -l-Bromofluoi ober,-ene 95% 65-135 <br /> �ota Analytical - Petaluma fhe i esults tri this i eport apply to the samples analyzed in attar dance with the cho- <br /> of custody document Unless other mise stated i esielis are repos ted on a fret weight <br /> bavis This of ciAaco iepoit nrtist he ieptoduced in its entoety <br /> Page ) of 6 <br />