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819 Sinker Ave Ste 8 <br /> 4ZNSequoia 34 <br /> r Sacrum(9 6)921-986M <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs caro <br /> Gettler-Ryan-Dublin 1 = Project Former Unocal 0187, Stockton,CA S302221 <br /> 6747 Sierra Court,Ste J Project Number NIA v, Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 02/28/03 19 02 <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 /> NP-1-22 (5302221-28)Water Sampled 02/06/0312 35 Received 02/07/03 10 30 <br /> Purgeable Hydrocarbons - ` - - ND y 50 -ugll = ,,I 3020224 _ 02/18/03 02/19/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a,a,a-Trifluorotoluene 85% 60-140 " <br /> NP-1-65(5302221-29)Water Sampled 02/061031325 Received 02/07/03 10.30 _ <br /> Pargeable Hydrocarbons - 5200 1000 ugfl 20 3020224 02/18/03 02/19/03 EPA 801518021 <br />- Benzene <br /> 120 10 "` <br /> Toluene 110 10 " <br /> Ethylbenzene 460 f 10 - <br /> Xylenes(total) 1200 10 <br /> -Methyl tert-butyl ether- 52 40 <br /> Surrogate a,a,a-Trifluorotoluene 90% 60-140 <br /> NP-1-111 (5302221-30)Water Sampled 02/06/03 14 15 Received 02/07/03 10 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3020224 02/18/03 02/19/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 <br /> Methyl tert-bury]ether ND 2 0 "T " <br /> Surrogate a a,a-Trifluorotoluene =- i- —-_-- -90%—--60-140-- <br /> Sequoia <br /> -60-140-Sequoia Analytical - Sacramento The results rn this report apply to the samples analyzed in accordance with the chain o <br /> custody document Unless otherwise stated results are reported on a wet weight bases <br /> This analytical repos t must be reproduced in its entirety <br /> Page 13 of 33 <br />