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Blvd Nrth Ste D <br /> Sequoia 1455 McDowePetalumaoCA 94954 <br /> 4D Analytical (707) 792-0865 <br /> FAX(707) 792-0342 <br /> Sequoia San Carlos Project Subbed in Sampled 4/22/99 <br /> 1551 Industial Blvd Project Number L904337 Received 4/28/99 <br /> San Carlos,CA 94070 Project Manager Mike Gregory Reported 5/6/99 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequota Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MVV-1 P904776-01 Water <br /> Tert-amyl methyl ether 9050079 5/4/99 5/5/99 1000 ND ug/l <br /> Tert-butyl alcohol " " 20000 ND " <br /> Di-isopropyl ether 1000 ND " <br /> 1,2-Dibromoethane(EDB) 500 ND " <br /> 1,2-Dichloroethane 500 ND " <br /> Ethanol 100000 ND " <br /> Ethyl ter[-butyl ether 1000 ND " <br /> Methyl tert-butyl ether _ 500 35900 <br /> Surrogate Dibromofluoromethane " " 860-118 102 % <br /> Surrogate 1,2-Dichloroethane-d4 " " " 800-120 110 It <br /> Surrogate Toluene-d8 " 880-110 958 of <br /> Surrogate 4-Bromofluorobenzene " or 860-115 102 It <br /> MW-2 P904776-02 Water <br /> 0 amyl methyl ether 9050079 515/99 5/5199 1 00 ND ug/l <br /> -butyl alcohol 200 ND " <br /> Di-isopropyl ether 100 ND " <br /> 1,2-Dibromoethane(EDB) I. <br /> 0 500 ND " <br /> 1,2-Dichloroethane 0 500 ND " <br /> Ethanol 100 ND " <br /> Ethyl tert-butyl ether 1 00 ND " <br /> Methyl tert-butyl ether _ _ 0 500 ND _ <br /> Surrogate Dibromofluoromethane 860-118 101 <br /> Surrogate 1,2-Dichloroethane-d4 800-120 112 <br /> Surrogate Toluene-d8 880-110 93 4 " <br /> Surrogate 4-Bromofluorobenzene 860-115 102 " <br /> MW-3 P904776-03 Water <br /> Tert-amyl methyl ether 9050079 5/4/99 5/4/99 100 ND ug/l <br /> Tert-butyl alcohol 200 ND " <br /> Di-isopropyl ether 1 00 ND " <br /> 1,2-Dibromoethane(EDB) 0 500 ND " <br /> 1,2-Dichloroethane 0 500 ND " <br /> Ethanol 100 ND " <br /> Ethyl tert-butyl ether 1-00`' ND " <br /> Methyl tert_-butyl ether _ _ _ _ _ _ _ 0 500 ^_ND <br /> Surrogate Dibramofluoromethane 86 0-118 100 <br /> Surrogate 1,2-Dichloroethane-d4 800-120 107 <br /> Surrogate Toluene-d8 880-110 962 " <br /> Surrogate 4-Bromofluorobenzene 860-115 104 <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 2 of 6 { <br />