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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 9/29/99 <br /> 270 Perkins St Project Number 440 Charter, Stockton Received 9/29199 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 10/11/99 <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 /> VNI-4 5' P909681-01 Soil <br /> Tert-amyl methyl ether 9090767 9130199 9/30/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND <br /> Dr-isopropyl ether 000500 ND <br /> Ethyl tert-butyl ether 000500 ND <br /> Methyl tert-butyl ether 000500 ND <br /> Surrogate Dibromofluoromethane 800-120 942 <br /> Surrogate 12-Drchloroethane-d4 800-120 950 " <br /> Surrogate Toluene-d8 " 810-117 802 <br /> Surrogate 4-Bromofluorobenzene 740-121 858 <br /> VSi-6 0' P909681-02 Sol] <br /> Tert-amyl methyl ether 9090767 9130199 9130199 000500 ND mg/kg <br /> rt-butyl alcohol U 100 ND <br /> sopropyl ether „ 000500 N D <br /> yl Cert-butyl ether 000500 ND <br /> Methyl_te_rt-butyl ether 000500 ND " <br /> Surrogate Dthromofluoromethane 800-120 93 6 l <br /> Surrogate 1 2-Dichloroethane-d4 800-120 948 <br /> Surrogate Toluene-d8 810-117 854 <br /> Surrogate 4-Bromofluorobenzene " 740-121 918 <br /> • <br /> Sequoia Analytical- Petaluma *Rcj r to end of repot t for to�t of,roles Will dcfr,rrrrorr� <br /> Page 5 of l l <br />