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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> D�„ Analytical FAX 1707? 792-034Z <br /> Cambria Environmental Project Shell Oil Co Sampled 8/11199 to 8/12199 <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/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9080470 Date Prepared 8/19199 Extraction Method EPA 5035 <br /> Blank 9080470-BLKI <br /> Tert-amyl methyl ether 8/19199 ND mg/kg 000500 <br /> Tert-butyl alcohol ND 0 100 <br /> Di-isopropyl ether ND 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> 1,2-Dichloroethane ND 000500 <br /> Ethanol ND 0200 <br /> Ethyl tert-butyl ether ND 000500 <br /> Methyl tert-butyl ether ND 000500 <br /> Surrogate Dibromofluoromethane 00500 00506 800-120 101 <br /> Surrogate 1 2-Dichloroethane-d4 00500 00483 800-120 966 <br /> Surrogate Toluene-d8 00500 00528 810-117 106 <br /> Surrogate 4-Bromofluorobenzene 00500 00501 740-121 100 <br /> BIank 9080470-BLK2 <br /> Tert-amyl methyl ether 8/20/99 ND mg/kg 000500 <br /> Tert-butyl alcohol ND 0 100 <br /> Di-isopropyl ether ND 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> 1 2-Dichloroethane ND 000500 <br /> Ethanol ND 0200 <br /> Ethyl tert-butyl ether ND 000500 <br /> Methyl tert-butyl ether ND 006500 <br /> _Surrogate Abramofluoromethane __ " _ _ 00500 T M 0 04_96 _ __ 80_0-120 99 2 v <br /> Surrogate 1,2-Dichloroethane-d4 00500 00492 800-120 984 <br /> Surrogate Toluene-d8 00500 00514 81 0-117 103 <br /> Surrogate 4-Bromofluorobenzene 00500 00494 or <br /> 740-121 988 <br /> LCS 9080470-BSI <br /> Methyl tert-butyl ether 8/19/99 00500 00497 mg/kg 75 8-124 994 <br /> Surrogate Dibromofluoromethane or00500 00493 11800-120 986 <br /> Surrogate 1,2-Dichtot oethane-d4 1100500 00477 11800-120 954 <br /> Surrogate Toluene-d8 1100500 00508 11810-117 102 <br /> Surrogate 4-Bromofluorobenzene to00500 00476 to740-121 952 <br /> LCS 9080470-BS2 <br /> Methyl tent-butyl ether 8/20/99 00500 00533 mg/kg 75 8-124 107 _ <br /> Surrogate Dibromofluoromethane 1100500 00523 to 800-120 105 <br /> Surrogate 1,2-Dichloroethane-d4 " 00500 00522 to 800-120 104 <br /> Surrogate Toluene-d8 to00500 00539 to 810-117 108 <br /> Surrogate 4-Bromofluorobenzene " 00500 00531 to 740-121 106 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definato <br /> Page 14 of 16 <br />