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4D Sequoia819 Striker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> www sequmalabs corn <br /> ettler-Ryan-Rancho Cordova Project Former Unocal 2859,Stockton,CA S301507 <br /> 40 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Rlsse 02/05/03 17 48 <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 /> MW-2 S301507-01 Water Sampled 01/23/03 09 20 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons 41000 25000 ugn 500 3010455 01/28/03 01/28/03 EPA 8015/8021 <br /> Benzene 1500 250 " <br /> Toluene 6800 250 <br /> Ethylbenzene 2300 250 <br /> Xylenes(total) 11000 250 " <br /> Methyl tert-butyl ether ND 1000 <br /> Surrogate a a,a-Trifluorotoluene 98% 60-140 <br /> MW-10 5301507-02 Water Sampled 01/23/03 09 26 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons 16000 5000 ug/1 100 3010455 01/28/03 01/28/03 EPA 8015/8021 <br /> Benzene 920 50 " <br /> Toluene 2600 50 " <br /> Ethylbenzene 170 50 „ <br /> Xylenes(total) 3800 50 " <br /> Methyl tert-butyl ether ND 2004 " <br /> iogate a a,a-Trtfluorotoluene 92% 60-140 <br /> -ll (S301507-03)Water Sampled 01/23/0309 13 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons 59 50 ug/1 1 3010455 01/30/03 01/30/03 EPA 8015/8021 <br /> Benzene 14 050 <br /> Toluene ND 050 " <br /> Ethylbenzene 2 7 050 „ <br /> Xylenes(total) 17 050 " <br /> Methyl tert-butyl ether ND 2 0 <br /> Surrogate a,a,a-Trifluoratoluene 90% 60-140 " <br /> ala 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 baits <br /> This analytical report must be reproduced to its entirety <br /> Page 3 of 7 <br />