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1455 McDowell Blvd North Ste D <br /> Sequoia <br />' PetalumaCA 94954 <br /> (70 <br /> (7U7)792 1855 <br /> Analytical www <br /> seq 7}792 0342 <br /> FAX <br /> equoiala6s com <br /> • <br /> URS Corp-Sacramento Project Arco Site 6100,Tracy, CA P411134 <br /> Project Number VVR36619 Reported <br /> 2870 Gateway Oaks Drive Suite 300 Pro J <br /> Sacramento CA,95833 Project Manager Jay Johnson 11/07/04 17 30 <br /> Purgeable Hydrocarbons by EPA 8015B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> 6100AEFF-110404(P411134-01)Air Sampled 11/04/04 08 03 Received 11/05/04 09 00 <br /> Gasoline Range Organics(C4-C12) 160 50 nig/m3 Air 1 4110178 11/05/04 11/05/04 EPA 8015B-VOA <br /> 10 58 <br /> Surrogate 4-Bromofluorobenzene 82% 65-135 <br /> Gasoline Range Organics(C4-C12) 46 14 ppmv " <br /> Surrogate 4-Bromofluorobenzene 82% 65-135 " <br /> • <br /> uola Analytical- Petaluma The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 3 of 8 <br />