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DSequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> ,!- - Analytical FAX(707) 792-0342 <br /> Cambna Environmental Project Shell Oil Co Sampled 8/11/99 to 8112/99 <br /> 270 Perkins St Project Number 440 W Charter, Stockton Received 8/13/99 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 8/20/99 <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 Notes* <br /> DSE-7 5'{conttnuedl P908378-08 Soil <br /> Surrogate Dibromofluoromethane 9080470 8/19/99 8/19/99 800-120 912 % <br /> Surrogate 1,2-Dichloroethane-d4 11 to800-120 906 vo <br /> Surrogate Toluene-d8 to to810-117 956 11 <br /> Surrogate 4-Bromofluorobenzene to " 740-121 946 " <br /> DNW-8 5' P908378-09 Sol <br /> Tert-amyl methyl ether 9080470 8/19199 8120/99 000500 ND mg/kg <br /> Tert-butyl alcohol " 110 100 ND " <br /> Di-isopropyl ether 11000500 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 00158 " <br /> Surrogate Drbromofluoromethane 10800-120 100 % <br /> Surrogate 1 2-Dichloroethane-d4 to It 11800-120 102 " <br /> agate Toluene-d8 to <br /> " 810-117 102 <br /> agate 4-Bromofluorobenzene 740-121 102 <br /> PLE 2-8 5' P908378-11 Sod <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19199 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND " <br /> Di-isopropyl ether 000500 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 ND " <br /> Surrogate Drbromofluoromethane " " " 800-120 900 % <br /> Surrogate 1,2-Drchloroethane-d4 to to <br /> " 800-120 92 0 11 <br /> Surrogate Toluene-d8 810-117 872 <br /> Surrogate 4-Bromofluorobenzene 740-121 91 0 <br /> i <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and defiazatons <br /> Page 9 of 16 <br /> �ti <br />