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a— ) <br /> 8Hi!arw s Drive <br /> Sequoia Morgan Hdl CA 95437 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> WWW sequoialabs com <br /> 7287 <br /> S Corporation fArcoI I Project ARCO#5469, Stockton,CA MPC0315 <br /> 0 Gateway Oaks Dr,Ste 300 Project Number GOBZP-0010 Reported <br /> ramento CA,95833 Project Manager Jay Johnson 03/30/06 14 47 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> MW-9(MPC0315-07)Water Sampled 03/06/06 04 24 Received 03/06/06 15 20 <br /> tert-Amyl methyl ether ND 050 ug/1 1 6C18011 03/18/06 03/19/06 EPA 8260B <br /> Benzene ND 0 50 PE <br /> tcrt-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 " <br /> 1,2-Dlbromoethane(EDB) ND 050 " <br /> 1,2-Drchloroethane 18 050 " <br /> Ethanol ND 300 " <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether 84 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogate 1 2-Drchloroethane-d4 102% 60-135 <br /> *;:te Toluene-d8 102% 70-120 <br /> le Dibromofluaromethane 104% 65-130 " <br /> Surrogate 4-Bromofluorobenzene 98% 70-120 <br /> MW-10(MPC0315-08)Water Sampled 03/06/06 05 39 Received 03/06/0615 20 <br /> tert-Amyl methyl ether ND 050 ug/I 1 6C18011 03/18/06 03/19/06 EPA 8260B <br /> Benzene ND 050 PE <br /> tert-Butyl alcohol ND 20 " <br /> DI-Isopropyl ether 2 1 050 " <br /> 1,2-Dlbromoethane(EDB) ND 050 " <br /> 1,2-Drchloroethane 6 7 050 <br /> Ethanol ND 300 " <br /> Ethyl ter(-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether 23 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogate 1 2-Dichloroethane-d4 102% 60-135 <br /> Surrogate Toluene-d8 102% 70-120 " <br /> Surrogate Dibromofluoromethane 98% 65-130 " <br /> Surrogate 4-Bromofluorobenzene 97% 70-120 <br /> �uoia Analytical-Morgan Hill The results in this report apply to the samples analyzed to 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 8 of 29 <br />