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Big Striker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> Sequoia (9 16)921-9600 <br /> lx� Analytical ww.equoi921-0100 <br /> www.scquoialabs.com <br /> Gettler-Ryan -Dublin Project: Former Unocal 0187,Stockton,CA S309067 <br /> 6747 Sierra Court,Ste.J Project Number: NIA Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 09/15/43 16:39 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Dilution Batch Prepared Analyzed Method Notes <br /> Analyte Result Limit Units <br /> U-18(S309067-19)Water Sampled:08/29/03 11:02 Received: 09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3090053 09/04/03 09/04/03 EPA 8021B <br /> Benzene ND 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-Trifluorotoluene <br /> 110% 60-140 <br /> U-19(5309067-20)Water Sampled:08/29/03 10:30 Received: 09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/I 1 3090053 09/04/03 09/04/03 EPA 8021B <br /> n ' <br /> Benzene <br /> NO 0.50 „ <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 <br /> X (total) ND 0.50 <br /> M tert-butyl ether ND 2.0 „ <br /> Surrogate:a,a,a-Trifluorotoluene 110% 60-140 <br /> U-20(S309067-21)Water Sampled:08/28/03 19:36 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons 360 50 u9/1 1 3090053 09/04/03 09/04/03 EPA 8021B <br /> Benzene 104 5.0 10 09/04/03 ^ <br /> Toluene ND 0.50 ^ 1 09/04/03 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) 1.5 0.50 <br /> Methyl tert-butyl ether 18 2.0 <br /> Surrogate:a,a,a-Trifluorotoluene 126% 60-140 " <br /> Se uoia Analytical- Sacramento The results in 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. I <br /> This analytical report must be reproduced in its entirety. <br /> Page 10 of 29 <br /> u <br />