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Sequoia 885 Jarvis Dr <br /> Mapn Hill,CA 95037 <br /> (408)776-9600 <br /> Analytical <br /> FAX(408)752-6306 <br /> www,sequoia]abs.com <br /> tratus Environmental Inc. Project: ARCO x5469,Stockton,CA MLL0441 <br /> 330 Cameron Park Dr.,Suite 550 Project Number: ARCO#5469, Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 01/07/03 12:15 <br /> BTEX by EPA Method 8260B <br /> Sequoia Analytical- Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-5(ML.L0441-0)Water Sampled: 12/11/02 08:23 Received: 12/11/02 12:00 <br /> Benzene ND 25 uo 50 21,20026 12/19/02 12/20/02 EPA 8260B <br /> Toluene ND 25 ,. , ^ „ „ 11 <br /> Ethylbenzene ND 25 <br /> Xylenes(total) ND 25 <br /> Surrogate: 1,2-Dichloroethane-d4 113% 78-129 " <br /> NM'-6(MLL0441-06)Water Sampled: 12/11/02 09:43 Received: 1211110212.00 <br /> Benzene ND 1000 ugJl 2000 2L20026 121]9/02 12/20/02 EPA 8260B <br /> Toluene ND 1000 " " , 1+ „ ,. <br /> Ethylbenzene ND 1000 <br /> Xylenes(total) ND 1000 ^ " <br /> Surrogate: 1,2-Dichloroethane-d4 117% 78-129 <br /> MW-7(MLL0441-07)Water Sampled: 12/11/02 04:45 Received: 12/1110212:00 <br /> Benzene 1.2 1.0 ug/1 2 2L24008 12/24/02 12/24/02 EPA 82603 <br /> Toluene NTI) 1.0 " „ <br /> *ylbcnzene ND 1.0 <br /> lenes(total) I.9 1.0 „ <br /> Surrogate: 1,2-Dichloroethane-d4 116% 78-129 " <br /> MW-8(MLL0441-08)Water Sampled: 12/11/02 05:58 Received: 12111/0212:00 <br /> Benzene 9600 250 ug/1 500 2L24008 12/24/02 12/24/02 EPA 8260B <br /> Toluene ND 250 " " , <br /> Ethylbenzene ND 250 " <br /> Xylenes(total) ND 250 ^ ^ <br /> Surrogate 1,2-Dichloroethane-d4 117% 78-129 " ^ <br /> noia 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 6 of 20 <br />