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, <br /> 1551 Irsdustrial Road <br /> Sequoia `+ M &-mCMm`A 9487 4111 <br /> (650)232-9600 <br /> FAX(650)232-9612 <br /> Analytical wv'~'sequoialahs , <br /> Gettler-Ryan/Geost vtgpes(1) Project Unocal(3) Sampled 11/22/00 <br /> 6747 Sierfa Court,Suite J Project Number FORMER UNOCAL SS#0187 Received 11/22/00 <br /> Dublin,CA 94568 Pro ect Manager Deanna Harding Reported 12/5100 <br /> u <br /> Date Spilm Sample` QC Reporting Limit Recov 'RPD RPD <br /> Anal Analyzed Level Result Result Units Recov Limits % Limit % Notes' <br /> 5 <br /> Blank 0110130-BLK3 <br /> Ethanol 11/30/00 ND ug/l 1000 <br /> Tort-butyl alo0h01 ND 100 <br /> Methyl tart-butyl ether ND 2.00 <br /> Di-isopropyl ether ND " 2.00 <br /> Ethyl tort-butyl ether " ND 2.00 <br /> Tert-amyl methyl ether " ND 2.00 <br /> Surrogate 1,2-Dichloroethane-d4 " 500 SS 8 760-114 112 <br /> _ .. <br /> I. S 0110130-BS1 <br /> Methyl tart-butyl ether - 3 - 11/28/00 -- 500 528 ug/l 700-130 106. <br /> Surrogate 1,2-Dichloroethane-d4 of 500 471 " 760-114 942 <br /> I, _' 0110130-BS2 - <br /> Methyl tat-butyl ether T_ 11/30/00_ ._50 0 _ _ 56 1 ugll _ 700-130 112 <br /> Surrogate 1,2 Dichloroethane-d4 500 530 760-114 106 <br /> 0110130-BS3 <br /> Methyl tem-kutyrt ether 11/30/00 500 527 ngll 700-130 105 <br /> _Surrogate=-1,2 Dichloroethane-&-=-, - --50 0—`= ___=54 2� 0-114= —108 <br />____Matrix Spike <br /> Methyl tent butyl ether 11/28/00 500 ND 520 u 600-140 104 <br /> Surrogate -1,2Lhchloroethane-d4 = v -" -- _-=50 0—-- - _-=- 524 " 760-114 105 _ <br /> Matrix Sglke.RHn 0110130-MSDI L01124643 <br /> Methyl tert-butyl ether -11/28/00 500 ND 535 u 600-140 107 250 2.84 <br /> Surrogate 1,2 Dschloroethane-d4 SO 0 518 760-114 104 <br /> Batch: 0110138 Date Prepared 11/29/00 Extraction Method: EPA 5030B <br /> Pink _ r 1011013&-B <br /> Ethanol P 11/29/00 ND ugll 1000 <br /> Tat-butyl alcohol ND " 100 <br /> Methyl tart-butyl other ND 2.00 <br /> Di-isopropyl ether ND 2.00 <br /> Ethyl tertbutyl ether ND 2.00 <br /> Tert-amyl methyl ether ND 2.00 <br /> Surrogate 1,2 Drchloroethane-d4 500 471 760-114 942 <br /> I 0110138-BSI <br /> Methyl tat-bu 1 ether 11/29100 500 "8 u 700-130 896 <br /> Surrogate 1,2-Dichloroethane-d4 " 500 494 of 760-114 988 <br /> Sequoia Analytical-San Carlos 'Refer to end of report for text of notes and definitsons <br /> Page 21 of 23 <br />