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819 Striker Ave Ste 8 <br /> Sacraento,CA5834 <br /> Sequoia m(9 6)92199600 <br /> FAX(916)921-0100 <br /> r Analytical www,sequoialabs.com <br /> Gettler-Ryan-Dublin Project- Former Unocal 0187,Stockton,CA 5309067 <br /> 6747 Sierra Court,Ste.J Project Number: N/A Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 09/15/03 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 /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-2-22(S309067-31)Water Sampled:0812810313:51 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3090053 09/05/03 09/05/03 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 109% 60-140 " <br /> NP-2-60(S309067-32)Water Sampled:08/2810314:16 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons 330 50 ugll 1 3090053 09/05/03 09/05/03 EPA 8021B <br /> Benzene 65 0.50 <br /> Toluene 9.0 0.50 <br /> Ethylbenzene 1.9 0.50 " <br /> XyJft(total) 27 0.50 " <br /> M ert-butyl ether 5.8 2.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 119% 60-140 " <br /> NP-2-116(S309067-33)Water Sampled:08/28/03 15:00 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 u9/1 1 3090053 09/05/03 09/05/03 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 107% 60-140 <br /> Se a Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> w <br /> custody document. Unless otherwise stated,results are reported a on a et weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> i <br /> Page 14 of 29 <br />