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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> a- ) 404 N W1get Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9t6)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650) 232 9600 FAX(650)232-9612 <br /> i <br /> Blaine Tech Services Project Shell(]) Sampled 4/15/99 Ask <br /> 1680 Rogers Avenue Project Number Shell 2575 Country Club Blvd, Stockton Received 4/16/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 5/6/99 <br /> �]xygenated Compounds�y EPA 1Wlethod 8260A/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued) 9040107-BLK1 <br /> Tert-amyl methyl ether 4/21/99 ND ug/l 200 <br /> Surrogate 12-Dichloroethane-d4 IF 500 524 io760-114 105 <br /> Blank 9040107-BLK2 <br /> Ethanol 4/22/99 ND ug/l 3000 <br /> Tert-butyl alcohol it ND " 200 <br /> Methyl tert-butyl ether it ND IF <br /> 200 <br /> Di-isopropyl ether It <br /> ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND " 200 <br /> Surrogate 1,2-Dichloroethane-d4 Soo 520 760-114 104 <br /> Blank 9040107-BLK3 <br /> Ethanol 4/22/99 ND ug/l 3000 <br /> Tert-butyl alcohol " ND 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether IF <br /> ND 200 <br /> Tert-amyl methyl ether " ND 200 <br /> Surrogate 12-Dichloroethane-d4 to500 510 760-114 102 <br /> LCS 9040107-BS1 <br /> Methyl tert-butyl ether 4/21/99 500 48 1 ug/1 700-130 962 <br /> Surrogate 1,2-Dachloroethane-d4 If 500 52 7 11 760-114 105 <br /> LCS 9040107-BS2 <br /> Methyl tert-butyl ether 4/22/99 500 483 ug/l 700-130 966 <br /> Surrogate 12-Dachloroethane-d4 to Soo 52 9 IF 760-114 106 <br /> LCS 9040107-BS3 <br /> Methyl tert-butyl ether 4/22/99 500 459 ug/1 700-130 91 8 <br /> Surrogate 1,2-Dachloroethane-d4 11Soo 518 IF 760-114 104 <br /> Matrix Spike 9040107-MSI L904208-15 <br /> Methyl tert-butyl ether 4/21/99 500 ND 509 ug/l 600-140 102 <br /> Surrogate 1,2-Dachloroethane-d4 11 500 550 if 760-114 110 <br /> Matrix Spike Duo 9040107-MSD1 L904208-15 <br /> Methyl tert-butyl ether 4/21/99 500 ND 51 7 ug/l 600-140 103 250 0 976 <br /> Surrogate 12-Dachloroethane-d4 IF 500 -558 IF 760-114 112 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitao <br /> Page 29 of 32 <br />