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1455 McDowell Blvd. North,Ste. D <br /> Sequoia Petaluma,CA 94954 <br /> Analytical 1 <br /> 1C) (707) 792-1865 <br /> Analyl}lCa1 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: 8/20/99 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> lAnalvte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> T7-N-24.5'(continued) P908378-04 Soil 4 <br /> Surrogate: 4-Bromofluorobenzene 9080470 8119/99 8/19/99 74.0-121 94.4 % <br /> T7-S-19.0' P908378-05 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 0.00500 ND mgkg <br /> Tert-butyl alcohol 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND " <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 ND " <br /> Surrogate: Dibromofluoromethane 80.0-110 94.6 % <br /> Surrogate: 1,2-Dichloroethane-d4 80.0-120 91.6 <br /> Surrogate: Toluene-d8 81.0-117 96.8 <br /> Surrogate: 4-Bromofluorobenzene 74.0-111 97.0 <br /> DSW-7.0' P908378-06 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 0.00500 ND me"kg <br /> Tert-butyl alcohol 1. 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND " <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 ND <br /> Surrogate: Dibromofluoromethane 80.0-120 90.0 % <br /> Surrogate: 1,2-Dichloroethane-d4 " " " 80.0-120 87.0 It <br /> Surrogate: Toluene-d8 81.0-117 92.4 " <br /> Surrogate: 4-Bromofluorobenzene 74.0-121 91.6 " <br /> DSW 1-3.0' P908378-07 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/20/99 0.00500 ND mg/kg <br /> Tert-butyl alcohol 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 ND _ <br /> Surrogate: Dibromofluoromethane 80.0-110 101 % <br /> Surrogate: 1,2-Dichloroethane-d4 80.0-120 102 <br /> Surrogate: Toluene-d8 81.0-117 103 <br /> Surrogate: 4-Bromofluorobenzene 74.0-121 115 <br /> DSE-7.5' P908378-08 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 S 19:99 0.00500 ND m+,�k, <br /> Tert-butyl alcohol 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND " <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 ND " <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions. <br /> Page 8 of 16 <br /> fir, <br />