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819 Striker Ave Ste 8 <br /> IDSequoia Sacrarn(9 o,CA6)9219834 <br /> 600 <br /> FAX Analytical ww.seq 6) latexa0 <br /> �l wv��v.sequoialabs.com <br /> Gettler-Ryan-Dublin Project: Former Unocal 0187, Stockton,CA 5306048 <br /> 6747 Sierra Court,Ste.J Project Number: N/A Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 06/16/03 15:43 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-21 S306048-22 Water Sampled:05129/0315:20 Received: 06/0210313:40 <br /> Purgeable Hydrocarbons 59 50 ug/1 1 3060103 06/09/03 06/09/03 EPA 8015/8021 <br /> Benzene 10 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.0 " <br /> Surrogate:a,a,a-rrifluorotoluene 104% 60-140 <br /> U-22 5306048-23 Water Sampled-05127/0312:25. Received: 06102/0313:40 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3060103 06/09/03 06/09/03 EPA 8015/8021 <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Methyl tent-butyl ether ND 2.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 90% 60-140 <br /> U-23 5306048-24 Water Sampled: 05127/0313:00 Received: 06102/0313:40 <br /> Purgeable Hydrocarbons ND 50 ug/] 1 3060103 06/09/03 06/09/03 EPA 8015/8021 <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Methyl ten-butyl ether' ND 2.0 <br /> Surrogate:a,a,a-TriJluorotoluene 94 % 60-140 <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document. Unless otherwise staled,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 11 of 32 <br />