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681 )sapeake Drive Redwood City CA 940 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)9$8-9673.1�- <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (9t6)921-9600 FAX(916)921-0100 <br /> Analytical <br /> 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 /> Sequoia-Redwood City Project Kayvan Kimyai Sampled 2/26/99 <br /> 680 Chesapeake Drive Project Number 9903085-(Cambna) Received 3/3/99 <br /> Redwood City,CA 94063 Project Manager Ka an Kim ai Reported 3/16/99 <br /> U217191W1512111 <br /> �,f� ec�tta�a <br /> rDate Spike , Sample QC Reporting Limit Recov RPD RPD <br /> lAnatyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9030010 Date Prepared_ 313/99 Extraction Method EPA 5030B [P/'I'1 <br /> Blank 9030010-BLK1 <br /> Ethanol 3/3/99 ND ug/l 3000 <br /> Tert-butyl alcohol ti ND it200 <br /> Methyl tent-butyl ether it ' ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 1,2-Dichloroethane-d4 500 511 760-114 102 <br /> Blank 9030010-BLK2 <br /> Ethanol 314199 ND ug/l 3000 <br /> Tert-butyl alcohol 11ND 11200 <br /> Methyl tent-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tent-butyl ether ND 200 . <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 1,2-Dichloroethane-d4 500 535 760-114 107 <br /> LCS 9030010-BSI <br /> Methyl tert-butyl ether 3/3/99- 53 8 ug/l 70 0=130 <br /> Surrogate 1,2-Dichloroethane-d4 it500 548 760-114 110 <br /> LCS 9030010-BS2 <br /> Methyl tert-butyl ether 314/99 500 51 6 ug/1 700-130 103 <br /> Surrogate 1,2-Dichloroethane-d4 it500 52 6 760-114 105 <br /> Matrix Spike 9030010-MS1 L903019-03 <br /> Methyl tett-butyl ether 3/3/99 500 1[22 163 ug/l 600-140 820 <br /> Surrogate 12-Dichloroethane-d4 if 500 504 if760-114 101 <br /> Matrix Spike Duo 9030010-MSD1 L903019-03 <br /> Methyl tert-butyl ether 313199 56-0 -122 174 ug/l 600-140 104 250 23 7 <br /> Surrogate 12-Dichloroethane-d4 500 510 760-114 102 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitio <br /> Page 10 of 11 <br />