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Sequoia <br />Analytical <br />0 <br />1455 McDowell Blvd North Ste D <br />Petaluma CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />www sequoialabs com <br />3lame Tech/Chevron <br />Project <br />Chevron <br />Sampled <br />3/1100 <br />1680 Rogers Ave <br />Project Number <br />301 R' Kettleman Lane, Lodi <br />Received <br />3/2/00 <br />San .lose CA 95112 <br />Project Manager <br />Scott Boor <br />Reported <br />3/23/00 <br />Volatile Organic Compounds by EPA Method 8264B/Quality Control <br />Sequoia Analytical - Petaluma <br />Date Spike Sample QC Reporting Linit Recov RPD RPD <br />Analyte Analyzed Level Result Result Units Recov Limits % Lirrut % Notes" <br />Batch 0030090 <br />Date Prepared <br />3/4/00 <br />Extraction Method EPA 5030 waters <br />Blank <br />0030090-BLKI <br />Tert-amyl methyl ether <br />3/4100 <br />ND <br />ug/l <br />1 00 <br />Tert-butyl alcohol <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />too <br />1,2-Dibromoethane (EDB) <br />ND <br />0 500 <br />1,2-Dichloroethane <br />ND <br />0 500 <br />Ethanol <br />ND <br />100 <br />Ethyl tert-butyl ether <br />ND <br />100 <br />Methyl tert-butyl ether <br />ND <br />0 500 <br />Surrogate Dibromofluoromethane <br />500 <br />457 <br />860-118 <br />91 4 <br />Surrogate 12-Dichloroethane-d4 <br />500 <br />473 <br />800-120 <br />946 <br />Surrogate Toluene -d8 <br />Soo <br />490 <br />880-110 <br />980 <br />Blank <br />0030090-BLK2 <br />rt -amyl methyl ether <br />3/6/00 <br />ND <br />ug/l <br />1 00 <br />rt -butyl alcohol <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />1 00 <br />1,2-Dibromoethane (EDB) <br />ND <br />0 500 <br />1,2-Dichloroethane <br />ND <br />0 500 <br />Ethanol <br />ND <br />100 <br />Ethyl tert-butyl ether <br />ND <br />1 00 <br />Methyl tert-butyl ether <br />ND <br />0 500 <br />Surrogate Dibromofluoromethane <br />500 <br />472 <br />860-118 <br />944 <br />Surrogate 1,2-Dichloroethane-d4 <br />500 <br />497 <br />800-120 <br />994 <br />Surrogate Toluene -d8 <br />500 <br />495 <br />880-110 <br />990 <br />Blank <br />0030090-BLK3 <br />Tert-amyl methyl ether <br />3/7100 <br />ND <br />ug/l <br />1 00 <br />Tert-butyl alcohol <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />1 00 <br />1,2-Dibromoethane (EDB) <br />ND <br />0 500 <br />1,2-Dichloroethane <br />ND <br />0 500 <br />Ethanol <br />ND <br />100 <br />Ethyl tort -butyl ether <br />ND <br />1 00 <br />Methyl tent -butyl ether <br />ND <br />0 500 <br />Surrogate Dibromofluoromethane <br />500 <br />500 <br />860-118 <br />100 <br />Surrogate 1 2-Dichloroethane-d4 <br />Soo <br />554 <br />800-120 <br />111 <br />Surrogate Toluene -d8 <br />500 <br />503 <br />880-110 <br />101 <br />LCS <br />0030090-BS1 <br />Methyl tert-butyl ether <br />3/4/00 <br />500 <br />504 <br />ug/l <br />727-119 <br />101 <br />IWEquoia Analytical - Petaluma <br />*Refer to end of report for text of notes and definitions <br />Page 5 of 7 <br />