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������� 1455 McDowell Stud North Ste D ' <br /> Petaluma, CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX(707) 791-0342 <br /> r <br /> Delta Environmental Consultants Project Exxon Sampled 8126199 to 8127199 <br /> 3164 Gold Camp Dr,Suite 200 Project Number 7-01371DO99-865 Received 8/30/99 ' <br /> Rancho Cordova,CA 95670 Project Manager Jim Brownell Reported 9/15199 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control ' <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Lurut % Not , <br /> Matrix Spike 9080656-MSI P908522-01 <br /> Methyl tert-butyl ether 8127199 200 ND 201 mg/kg 758-124 100 ' <br /> Surrogate Dtbromofluoromethane Z 00 199 800-120 995 <br /> Surrogate 12-Drchloroethane-d4 200 209 800-120 104 <br /> Surrogate Toluene-d8 200 210 810-117 105 <br /> Surrogate 4-Bromofluorobenzene 200 192 FF 740-121 960 ' <br /> Matrix Spike Du p 9080656-MSD1 P908522-01 <br /> _Methyl tert-butyl ether 8127199 200 ND 208 mg/kg 758-124 104 350 392 <br /> Surrogate Dtbromofluoromethane 11200 199 800-120 995 <br /> Surrogate 12-Dichloroethane-d4 " 200 207 800-120 103 <br /> Surrogate Toluene-d8 200 206 it810-117 10.3 <br /> Surrogate 4-Bromofluorobenzene 200 192 'I 740-121 960 <br /> Batch 9080727 Date Pre ared 8131199 Extraction Method EPA 5035 <br /> Blank 9080727-BLK1 <br /> Tert-amyl methyl ether 8131/99 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 Cert-butyl ether ND 000500 <br /> Methyl tert-butyl ether ND 000500 <br /> Surrogate Dtbromofluoromethane 00S00 00492 800-120 984 <br /> Surrogate 1 2-Dichloroethane-d4 00500 00518 800-120 104 <br /> Surrogate Toluene-d8 00500 00488 810-117 976 <br /> Surrogate 4-Bromofluorobenzene 00500 00494 to740-121 988 <br /> Blank 9080727-BLK2 <br /> Tert-amyl methyl ether 9/1/99 ND mg/kg 000500 ' <br /> Tert-butyl alcohol 1, ND 1. 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 Dtbromofluoromethane 00500 00501 800-120 100 <br /> Surrogate 1 2-Drchloroethane-d4 00500 00522 800-120 104 <br /> Surrogate Toluene-d8 00500 00488 810-117 976 <br /> Surrogate 4-Bromofluorobenzene 00500 00505 740-121 101 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 17 of 20 <br />