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885 Jarvis Drive <br /> Sequoia Morgan Hill 09 <br /> =�' (4040 8)77 9600 <br /> fi 4640 <br /> �1� Analytical FAX 6308 <br /> www sequoiquoialabs cam <br /> Secor-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 0313 1106 14 03 <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-8-W-60-060223 (MPCO263-01)Water Sampled 02/23/06 16 10 Received 03/04/06 08 00 <br /> tert-Amyl methyl ether ND 050 ug/l 1 6CO9012 03/09/06 03/09/06 EPA 8260B <br /> Benzene <br /> ND 050 <br /> „ <br /> " <br /> tort-Butyl alcohol ND 20 " <br /> " <br /> Di-isopropyl ether ND 050 „ <br /> 1,2-Dibromoethane(EDS) ND 050 " <br />- 1,2-Dichloro_ethane _ ND 050 " <br /> Ethanol NDk--, 300 -- <br />-Ethyl tert-butyl ether ND 050 ��, _ <br /> Ethylbenzene ND 0-50'-" <br /> Methyl[ert-13uty1 ether - --- -- - — ND- - 0 50- - - -- - --- <br /> f oluene ND 0 50 " ;' " <br /> Xylenes(total) ND 050 1. 11 <br /> 1.Gasoline Range Organics(C4-Cl2) ND 50 " <br /> 1 2-Di benzene <br /> ND 050 " <br /> I 2-Dichlorobenzene ND 050 <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 050 " <br /> Surrogate 12-Dichloroethane-d4 <br /> 101 % 60-135 " <br /> Surrogate 4-Bromohuorobenzene 96% 70-120 <br /> Surrogate Dtbromofluoramethane <br /> 105% 65-130 " <br /> Surrogate Toluene-d8 96% 70-120 <br /> AS-9-W-60-060224(MPCO263-02)Water Sampled 02/24/06 14 15 Received 03/04/06 08 00 <br /> cert-Amyl methyl ether ND 050 ug/1 1 6CO9034 03/09/06 03/10/06 EPA 82608 <br /> Benzene ND 050 " <br /> tert-Butyl alcohol 61 20 <br /> Di-isopropyl ether ND 050 " <br /> 1,2-0ND 0 50ibromoethane(EDB) <br /> " <br /> 1,2-Dichloroethane 12 050 „ <br /> Ethanol ND 300 " <br /> " <br /> Ethyl tent-butyl ether ND 050 „ <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether 36 050 " <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C 12) ND 50 " <br /> Chiorobenzene ND 050 „ <br /> 1,2-DiWorobenzene ND 0 50 " <br /> 1 3-Dichlorobenzene ND 050 " <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 4 of 20 <br />