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Sequoia 885JarvisDr <br /> MQpn Hjll,CA 95037 <br /> qW AnalyticaI (408)776 9600 <br /> FAX(406)782-6308 <br /> www'Wquoialabs cam <br /> ecor-Rancho Cordova Project ARCO#4932,Stockton,CA <br /> 13017 Kilgore Rd Suite 100 MLK0860 <br /> Project Number ARCO#4932,Stockton,CA Reported <br /> ancho Cordova CA,95670 Project Manager Rusty Benkosky 12/23/02 10 48 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-7 LK0860-07 Water Sampled 11/20/02 13 57 Received 11/22/02 11 52 <br /> Gasoline Range Organics(C6-C10) 260 50 ug/l 1 2L04003 12/04/02 12/04/02 8015Bm/8021B HC-12 <br /> Benzene 8 3 0 50 " <br /> Toluene 078 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 „ <br /> Methyl tert-butyl ether 4 1 2 5 <br /> Surrogate a,a a-Triuorotoluene 102% 55-142 <br /> MW-8 MLK0860-08 Water Sampled 11/20/02 14 30 Received 11/22/02 11 52 <br /> Gasoline Range Organics(C6-C 10) ND 50 ug/I 1 2LO4003 12/04/02 12/04/02 8015Bm/8021B <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> EthyIbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 <br /> ogate a a a-Tris luorotoluene 800% 55-142 <br /> -9 LK0860-09 Water <br /> Sampled 11/21/02 08 28 Received 11/22/02 11 52 <br /> Gasoline Range Organics(C6-C10) 120 50 ug/1 1 2LO4003 12/04/02 12/04/02 8015Bm/8021B HC-12 <br /> Benzene 0 75 0 50 <br /> Toluene 066 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 „ <br /> Methyl tent-butyl ether ND 2 5 <br /> Surrogate a,a,a-Trifluorotoluene 982 % 55-142 " ,. <br /> Sequoia Analytical-Morgan Hill 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 5 of 23 <br />