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i <br /> 819 Sinker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> {916}9219600 <br /> Analytical www <br /> (916)921-0100 <br /> www sequoialabs com <br /> ttler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S301506 <br /> 40 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager- Geoffrey D Risse 02/06/03 18 03 <br /> Gasoline(2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Repotting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-10 5301506-01 Water Sampled 01/23/03 07 08 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3010538 01/31/03 01/31/03 EPA 8015/8021 <br /> Benzene ND 0 50 11 " " " " <br /> Toluene ND 050 It <br /> " " " " " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Trtfluorotoluene 98% 60-140 " <br /> NP-2-22 5301506-02 Water Sampled 01/23/03 07 18 Received 01/23/0314 25 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3010538 01/31/03 01/31/03 EPA 8015/8021 <br /> Benzene ND 0 50 " " " " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> *ogate a a a-Tnfluorotoluene 97% 60-140 " <br /> 2-60 5301506-03 Water Sampled 01/23/03 07 27 Received 01/23/0314 25 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3010538 01/31/03 01/31/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a,a a-Tnfluorotoluene 96% 60-140 " <br /> ola Analytical- Sacramento The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> Thos analytical report must be reproduced in its entirety <br /> Page 3 of 9 <br />