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,l <br /> 885 Jarvis Dr <br /> Sequoia Morgan Hill,CA 95037 <br /> (408)776-9600 <br /> a_� <br /> ' Analytical FAX(408)782 6308 <br /> www sequoialabs can <br /> ecor-Rancho Cordova Project ARCO#4432,Stockton,CA MLK0160 <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#4932, Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 12/23/02 10 48 <br /> Total Purgeable Hydrocarbons (C&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 /> EW-6 MLK0860-13 Water Sampled 11121/021630 Received 11/22/02 11 52 <br /> Gasoline Range Organics(C6-C10) 28000 5000 ug/1 100 2LO5002 12/05/02 12/05/02 8015Bm/8021B 14C-21 <br /> Benzene 390 50 <br /> Toluene 1500 50 <br /> Ethylbenzene 1200 50 " <br /> Xylenes(total) 6200 50 <br /> Methyl tert-butyl ether 440 250 <br /> Surrogate a a,a-Tr4fluorotoluene 984% 55-142 " Q-23a <br /> DMW-1(MLK0860-14)Water Sampled 11/21/02 09 15 Received 11/22/02 11 52 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l _ 1 2LO4004 12/04/02 12/04/02 8015Bm/802I13'' <br /> Benzene 076 050 <br /> Toluene 063 0 50 <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) 15 0 50 <br /> Methyl tert-butyl ether 18 2 5 " <br /> rrogate a,a,a-Tri luorotoluene 863 % 55-142 <br /> -2(MLK0860-15)Water Sampled 11/20/02 16 20 Received 11/22/0211 52 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 2LO4004 12/04/02 12/04/02 -8015Bm/8021B <br /> Benzene ND 0 50 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) 12 0 50 <br /> Methyl tert-butyl ether 41 2 5 " <br /> Surrogate a,a,a-Tris luorotoluene 949% 55-142 " <br /> Sequoia Analytical-Morgan HiII 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 7 of 23 <br />