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r <br /> Dr <br /> Sequoia 885]awes 37 <br /> a— ) <br /> MQ�n 11111,CA 95037(408)776-9600 <br /> ► Analytical FAX(408)782-6308 <br /> www sequoialabs c <br /> Secor-Rancho Cordova Project ARCO#595,Stockton,CA MMA0549 <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/25/03 10 42 <br /> _ Total Purgeable Hydrocarbons (C6-00) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting - - -- - - - - - - --- - -- -- —- - -- � - - - - <br /> Analyte Result Lllint Units Dilution Batch Prepared Analyzed Method Notes <br /> DMW-1 (MMA0549-09)Water Sampled 01/17/03 18 10 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/1 I 3A31001 01/31/03 01/31/03 8015Bm/8021B <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 56 " <br /> Methyl tert-butyl ether 41 2 5 " <br /> Surrogate a a,a-Trrfluorotoluene 821 % 55-142 <br /> DMW-2(MMA0549-10)Water Sampled 01/17/03 12 40 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I 1 3A31001 01/31/03 01/31/03 8015BmI8021B <br /> Benzene ND 0 50 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether 6 6 2 5 " <br /> Surrogate a a,a-Trtfluorotoluene 912% 55-142 <br /> DMW-3(MMA0549-11)Water Sampled 01/17/03 18 00 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) 110 100 ug/l 2 3A31004 01/31/03 01/31/03 8015Bm/8021B H(,-19,U-11 <br /> Benzene ND I0 <br /> Toluene ND 10 " <br /> Ethylbenzene ND- --1=0 <br /> Xylenes(total) ND 1 0 " <br /> Methyl tert-butyl ether 130 50 Q-23 <br /> Surrogate a aa-Trifluorotoluene 981 % 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 /> 6 of 22 <br />