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Sequoia 819 Striker Ave Ste 8 <br /> Sacran oto, <br /> (916 92 99600 <br /> (916)921-9600 <br /> AA FAX(916)921-0100 <br /> nalytical www.sequoiaiabs.com <br /> i <br /> Gettler-Ryan-Dublin Project: Former Unocal 0187,Stockton,CA 5309067 <br /> 6747 Sierra Court,Ste.7 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-1-22(5309067-28)Water Sampled:08128/0312:00 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3090053 09/04/03 09/04/03 EPA 8021B <br /> Benzene ND 0.50 " <br /> Toluene 0.50 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 104% 60-140 <br /> NP-1-65(5309067-29)Water Sampled:08/28/03 12:41 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons 1600 500 ug/I 10 3090053 09/04/03 09/04/03 EPA 802113 <br /> Benzene 46 5.0 <br /> Toluene 35 5.0 " <br /> Ethylbenzene 200 5.0 <br /> Xylenes(total) 2S0 5.0 <br /> Methyl tent-butyl ether 56 20 " <br /> Surrogate:a,a,a-Trifluorotoluene 114% 60-140 " <br /> NP-1-111 (S309067-30)Water Sampled: 08/28/03 13:32 Received:09/02/03 16:20 <br /> Purgeable Hydrocarbons ND 50 ugll 1 3090053 09/04/03 09/04/03 EPA 8021E <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 101 % 60-140 " <br /> Sequoia 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. <br /> This analytical report must be reproduced in its entirety. <br /> Page 13 of 29 <br />