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" S 19 Sinker Ave Ste 8 <br /> Sequoia Saenmeatu,CA 95834 <br />' PAX(916)921-9600 <br /> Analytical WWW sequ ialabs c m <br /> • Weston Solutions Inc-Walnut Creek Project San Joaquin HSA S303630 <br />' 1575 Treat Blvd,Ste 212 Project Number N/A Reported <br /> Walnut Creek CA,94596 Project Manager Jessica Levmc 04/09/03 17 58 <br />' Gasoline (2-Methylpentane to 1,2,4-Trlmethylbenzene) and BTEX by EPA 8015M and 8021D <br /> Sequoia Analytical-Sacramento <br /> Reporting <br />' Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> - S303630-01 Water Sam led 03/25/03 12 20Received-03/25/03 17 30 <br />' Purgeable Hydrocarbons ND 50 ugA 1 3030436 03/27/03 03/27/03 EPA <br /> 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 w " <br /> Xylenes(total) ND 050 " <br /> Surro,eate a a a-Tnfluorotoluene 68% 60-140 " <br /> MW-2(S303630-02)Water Sampled.03/25/03 13 30 deceived 03/25103 17 30 <br /> Purgeable Hydrocarbons 30000 5000 ug4 100 3030436 03/27/03 03/27/03 EPA <br /> 8015/8021 <br /> Benzene 13000 500 " 1000 " 03/28/03 " <br /> Toluene ND 50 100 " = 03/27/03 <br /> Ethylbenzene 1200 50 " <br /> Xylenes(total) 1900 50 <br /> Surrogate a a a-Trifluorotoluene 86% 60-140 " <br /> MW-2A(S303630-03}Water Sampled 0385103 14 50 Received 03/25/03 17:30 <br /> Purgeable Hydrocarbons 1400 250 ugll 5 3030436 03/26/03 03/28/03 EPA <br /> 801518021 <br /> Benzene 30 25 " <br /> Toluene 3.3 25 <br /> Ethylbenzene 4 8 25 <br /> Xylenes(total) 86 25 <br /> Surrozate a a a-Tnfluorotoluene 98% 60-140 " <br /> oldine Tank S303630-04 Water Sampled 03/25/0315 30 Received 03/25103 17 30 <br /> Purgeable Hydrocarbons ND 50 ug/t 1 3030394 03/28/03 03/28/03 EPA <br /> 8015/8021 <br /> Benzene 11 050 " <br /> Toluene ND 050 w " <br /> Ethylbenzene 14 050 " <br /> Xylenes(total) 16 050 " <br /> ' Methyl tert-butyl ether ND 2 0 <br /> Surrozate a a a-Trifluorotoluene 95% 60-140 " <br /> 1 <br /> ' Sequoia Amlytical-Sacramento The results in thus report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> . basis This analytical report must be reproduced in its entirety <br /> ' Page 3 of 9 <br />