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885 Jarvis Drive <br /> Sequoia Morgan(40 C95437 <br /> (448)7776 9649 <br /> a_ � <br /> Analytical FAX equoi lab 63o8 <br /> WWW sequgialabs com <br /> • <br /> Sector-Rancho Cordova(ARCO) Project ARCO#2133, Stockton,CA MPCO263 <br /> 3017 Kilgore Rd Suite 100 Project Number Arco#2133,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Brian Carey 03/31/06 1101 <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 /> AS-10-W-60-060227(MPCO263-04)Water Sampled 02/27/0611 25 Received 03/04/06 08 00 <br /> tert-Amyl methyl ether ND 050 ug/l ! 6C 13001 03/13/06 03/13106 EPA 8260B <br /> Benzene ND 0 50 " <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 0 50 <br /> " <br /> i,2-Dibromoethane(EDB) ND 050 „ <br />--1,2-Dichloroethane- -_- - - s - - - 0 55 -- -- 050 - - -- - - - - -- - - - -- - -- -- - <br /> ND 300 <br /> Ethanol „ <br />—Ethyl tert-butyl ether —ND—0 50_ _ <br /> _Ethylbenzene _ - 29 050 <br />�Methyl tert-butyl ether 067 0 50 <br /> Toluene ND 050 " <br /> Xylenes(total) 36 0 50 " <br /> Gasoline Range Organics(C4-C12) 320 50 " <br /> Chlorobenzene ND 050 <br /> 1 2-Dichlorobenzene ND 0 50 <br /> 1,3-Dichlorobenzene ND s 0 50 " <br /> 1,4-Dichlorobenzene <br /> ND 0 50 <br /> Surrogate 1 2-Dichloroethane-d4 118% 60-135 " <br /> Surrogate 4-Bromofluoro6enzene " <br /> 92% 70-120 " <br /> Surrogate Dtbromofluoromethane <br /> 106% 65-130 <br /> Surrogate Toluene-d8 93% 70-110 <br /> AS-11-W-25-060302 (MPCO263-05)Water Sampled 03/02/06 09 55 Received 03/04/06 08 00 <br /> tert-Amyl methyi ether ND 0 50 ug/l 1 6C16020 03/16/06 03/16/06 EPA 8260B <br /> Benzene ND 050 <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 0 50 <br /> 1 2-Dibromoethane(EDB) ND 0 50 " <br /> PF <br /> 1,2-Dichloroethane ND 050 <br /> " <br /> Ethanol ND 300 1C <br /> Ethyl tert-butyl ether ND 050 <br /> " <br /> F_thylbenzene ND 0 50� " <br /> Methyl tert-butyl ether ND 0 50 " <br /> Toluene ND 050 „ <br /> Xylenes(total) ND 0 50 " <br /> Gasoline Range Organics(C4-C 12) ND 50 " <br /> Surrogate 1 2-Diehloroethane-d4 78% 60-135 <br /> Surrogate Toluene-d8 101 % 70-110 <br /> Surrogate Dtbromolluoromethane 94% 65-130 <br /> Sequoia Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain o <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 />