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SequoSequoia 1455 McDowell Blvd North Ste D ' <br /> ia Petaluma CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX(707) 792 Q342 <br /> Delta Environmental Consultants Project Exxon Sampled 8/26/99 to 8127/99 <br /> 3164 Gold Camp Dr,Suite 200 Project Number 7-0137/D099-865 Received 8/30/99 <br /> Rancho Cordova,CA 95670 Project Manager Jim Brownell Reported 9/15199 <br /> Volatile Organic Compounds by EPA Method 8260B ' <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed limits Limit Result Units Notes° , <br /> SB3-21 P908685-01 Sol] <br /> Tert-amyl methyl ether 9080727 9/1199 9/l/99 000500 ND mg/kg ' <br /> Tert-butyl alcohol 0 100 ND " <br /> Di-isopropyl ether 000500 ND " <br /> 1,2-Dibromoethane(EDB) 000500 ND " <br /> 1,2-Dichioroethane 000500 ND <br /> Ethanol 0200 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 ND ' <br /> Surrogate Dibromofluoromethane 800-120 982 % <br /> Surrogate 1,2-Dichloroethane-d4 800-120 105 <br /> Surrogate Toluene-d8 810-117 944 " <br /> Surrogate 4-Bromofluorobenzene 740-121 94 6 ' <br /> SB3-46 P908685-02 Sol] <br /> Tert-amyl methyl ether 9080727 9/1/99 9/1/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND <br /> Di-isopropyl ether 000500 ND " <br /> 1,2-Dibromoethane(EDB) 000500 ND " <br /> 1,2-Dichloroethane 000500 ND ' <br /> Ethanol 0200 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> _Methyl tert-butyl._ether 000500 ND <br /> Surrogate Dihromofluoromethane Fr 11 800-120 918 <br /> Surrogate 12-Dichloroethane-d4 800-120 984 " <br /> Surrogate Toluene-d8 810-117 892 " <br /> Surrogate 4-Bromofluorobenzene 740-121 922 , <br /> SB4-16 P908685-03 Sod <br /> Tert-amyl methyl ether 9080727 9/l/99 911/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND <br /> Di-isopropyl ether 000500 ND " <br /> 1,2-Dibromoethane(EDB) 000500 ND " <br /> 1,2-Dichloroethane 000500 ND ' <br /> Ethanol 0200 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 ND " <br /> Surrogate Dibromofluoromethane 800-120 958 % <br /> Surrogate 1 2-Dichloroethane-d4 " to 800-120 103 " <br /> Surrogate Toluene-d8 810-117 940 11 <br /> Surrogate 4-Bromofluorobenzene 740-121 980 If <br /> 1 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 7 of 20 <br />