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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma CA 94954 <br /> 4 (707) 792-1865 <br /> Analytical FAX (707) 792-0342 <br /> Cambria Environmental Project Shell Oil Co Sampled 8/11/99 to 8/12/99 <br /> 270 Perkins St Project Number 440 W Charter, Stockton Received 8/13/99 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 8120/99 <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 Nates* <br /> T6-N-25 0' P908378-01 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 000500 ND mg/kg <br /> Tert-butyl alcohol 11 1. 0 100 ND " <br /> Di-isopropyl ether " " 000500 ND " <br /> Ethyl tert-butyl ether 1. 000500 ND " <br /> Methyl tert-butyl ether " 000500 ND " <br /> Surrogate Dibromofluoromethane or to <br /> " 800-120 966 % <br /> Surrogate 1,2-Drchloroethane-d4 " to to 800-120 922 " <br /> Surrogate Toluene-d8 " " " 810-117 990 " <br /> Surrogate 4-Bromofluorobenzene or " " 740-121 966 " <br /> T6-S-25 0' P908378-02 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 000500 ND mg/kg <br /> Tert-butyl alcohol " " 0 100 ND " <br /> opropyl ether " " 11000500 ND <br /> 1 tert-butyl ether " " 000500 ND " <br /> Methyl tert-butyl ether 1. <br /> " 000500 ND " <br /> Surrogate Dibromofluoromethane 10or 800-120 93 4 % <br /> Surrogate 1,2-Dichloroethane-d4 11 11 11 800-120 93 4 " <br /> Surrogate Toluene-d8 11 11 " 810-117 972 " <br /> Surrogate 4-Bromofluorobenzene 11 11or 740-121 958 " <br /> T6/7-S-20 0' P908378-03 Soil 4 <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 00250 ND mg/kg <br /> Teri-butyl alcohol 11 1. 0 500 ND " <br /> Di-isopropyl ether " 00250 ND " <br /> Ethyl tert-butyl ether 1. 00250 ND " <br /> Methyl tert-butyl ether " 00250 ND " <br /> Surrogate Dibromofluoromethane 800-120 94 6 % <br /> Surrogate 1,2-Drchloroethane-d4 800-120 92 8 " <br /> Surrogate Toluene-d8 " " " 81 0-117 988 " <br /> Surrogate 4-Bromofluorobenzene 740-121 93 6 11 <br /> T7-N-24 5' P908378-04 Soil 4 <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 00250 ND mg/kg <br /> Tert-butyl alcohol 0 500 ND " <br /> Di-isopropyl ether 00250 ND " <br /> Ethyl tert-butyl ether 00250 ND " <br /> Methyl tert-butyl ether 00250 ND <br /> Surrogate Dibromofluoromethane 800-120 962 % <br /> AIKgate 12-Dichloroethane-d4 'I 80 0-120 98 4 '' <br /> gate Toluene-d8 810-117 992 <br /> Sequoia Analytical -Petaluma *Refer to end of report for text of notes and definitions <br /> I <br /> I <br /> I <br /> i <br /> Page 7 of 16 <br />