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e -u of a 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 iii Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical <br /> 1 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> �F <br /> Blaine Technical Services,Inc Project Shell Oil Co Sampled 1/19/99 <br /> 1680 Rogers Ave Project Number 341 E Mam,Ripon/990119-J3 Received 1/22/99 <br /> San Jose,CA 95112 Project Manager Fran Thie _ _Re orted _2/2/99__- <br /> - Volahle1OrganiVCompouiids by EPA <br /> aMetloa'8260BQ�al.irty�Cone trar�o�l <br /> lyc'alu-Palum1.a�i Sequoia"Aa <br /> — <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike 9010561-MS1 P901316-02 <br /> =Methyl tert-butyl ether 1/29/99250 572 828=ug/1 70 0A 30=102 2 <br /> Surrogate Dibromofluoromethane tr 500 466 " 860-118 932 <br /> Surrogate 12-Dichloroethane-d4 500 404 800-120 808 <br /> Surrogate Toluene-d8 500 509 880-110 102 <br /> Surrogate 4-Bromofluorobenzene 500 527 to 860-115 105 <br /> Matrix Spike Dup 9010561-MSD1 P901316-02 <br /> Methyl tent-butyl ether 1/29/99 250 572 876 ug/1 700-130 122 150 179 2 <br /> Surrogate Dibromofluoromethane If 500 463 It 860-118 926 <br /> Surrogate 1,2-Dichloroethane-d4 500 419 It <br /> 800-120 838 <br /> Surrogate Toluene-d8 500 505 If 880-110 101 <br /> Surrogate 4-Bromofluorobenzene 500 525 It 860-115 105 <br /> Sequoia Analytical-Petaluma *Refer to end of report far text of notes and definitions <br /> E <br /> Page 12 of 13 <br />