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ID (701455 McDowell Blvd North,Ste D <br /> Sequoia Petaluma EA 94954 <br /> Analytical FAX <br /> 7) 792-1865 <br /> (707) 792-0342 <br /> Blaine Technical Services,Inc Project Shell Oil Co Sampled 2/11/99 <br /> 1680 Rogers Ave PrRlect Number 1267 Country C1ub,Stockton/990211-K2 Received 2/16/99 <br /> San Jose,CA 95112 Project Mana er Ann Pember Reported 4/9/99 <br /> Volatile Organic Compounds by EPA Method 82608/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 % Lirrut % Notes' <br /> Batch 9030726 Date Prepared 4/1/99 Extraction Method EPA 5030 waters <br /> Blank 9030726-BLK3 <br /> Tert-amyl methyl ether 4/1/99 ND ug/1 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-tsopropyl ether I. <br /> ND 100 <br /> 1,2-Dibromoethane(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate Dibromofluoromethane 500 504 860-118 101 <br /> Surrogate 1,2-Dichloroethane-d4 5 00 524 800-120 105 <br /> Surrogate Toluene-d8 5 00 498 880-110 996 <br /> Surrogate 4-Bromofluorobenzene 500 465 860-115 930 <br /> LCS 9030726-BS3 <br /> Methyl tert-butyl ether 4/1/99 500 489 ug/l 727-119 978 <br /> Surrogate Dibromofluoromethane 500 480 860-118 960 <br /> Surrogate 1,2-Dichloroethane-d4 500 519 800-120 104 <br /> Surrogate Toluene-d8 500 472 880-110 944 <br /> Surrogate 4-Bromofluorobenzene 500 —456 66 0=115-912 <br /> Matrix Spike 9030726-MS1 P903684-02 <br /> Methyl tert-butyl ether 3/31/99 25 0 ND 25 1 ug/1 727-119 100 <br /> Surrogate Dibromofluoromethane 500 508 860-118 102 <br /> Surrogate 12-Dichloroethane-d4 500 544 800-120 109 <br /> Surrogate Toluene-d8 10 500 4 76 00 880-110 952 <br /> Surrogate 4-Bromofluorobenzene " 500 436 11860-115 872 <br /> Matrix Spike DuR 9030726-MSD1 P903684-02 <br /> Methyl tert-butyl ether 3/31/99 25 0 ND 25 8 ug/1 727-119 103 15 0 296 <br /> Surrogate Dibromofluoromethane to 500 520 860-118 104 <br /> Surrogate 12-Dichloroethane-d4 11500 558 800-120 112 <br /> Surrogate Toluene-d8 to 500 500 to 880-110 100 <br /> Surrogate 4-Bromofluorobenzene " 500 4 80 to860-115 960 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definazo <br /> A P IR 0 S 1999 <br /> D Page 10 of 1 l <br />