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ustral <br /> Sequoia los, A 94070-4111 <br /> 4070 �d <br /> �i San Carlos, to 94070-4 1 1 1 <br /> 4 (650)232-9600 <br /> Ci) FAX(650) 232-9612'" <br /> �„� Analytical <br /> - r <br /> Gettler-Ryan/Geostrategies(1) Troject Unocal(l) Sampled 1'1/23/99 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#0187/Job#280045 Received 11/24/99 <br /> Dublin,CA 94568 Project Manager Deanna HardinReported 12/10/99 <br /> a Volatile Organic Oxygenated Compoonds_6y EPA Method SZ60AIQnahty ControIY", vv- <br /> i xa,Y'"asy eC1 i M�xh ry 5 <br /> V eq�o34 Anojt!Calr�x oS Io(.:a3..xS3„av,e '_V";1 5` <br /> ; i�.3 <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued) 9120004-BLKI ` <br /> Tert-amyl methyl ether 12/1/99 ND ug/1 2.00 ' <br /> Surrogate 1,2-Drchloroethane-d4, " 500 559 760-114 111 <br /> LCS 9120004-BS1 <br /> Methyl tert-butyl ether 12/1/99 500 469 ug/l 700-130 938 <br /> Surrogate 12-Dtchloroethane-d4 500 563 r 760-114 113 , <br /> Matrix Spike 9120004-MSI L911275-16 <br /> Methyl tett-butyl ether 12/1/99 500 460 ug/1 - _ 600-140 <br /> Surrogate 1,2-Drchloroethane-d4 500 566 76 0-II4 113 <br /> Matrix Spike Dup 9120004-MSDI L911275-16 <br /> Methyl tert-butyl ether 12/1/99 Soo 51 1 ug/l 600-140 250 <br /> Surrogate 1,2-Drchloroethane-d4 500 541 -760-1 1 14 -. 108 -- - <br /> Batch• 9120020 Date Prepared 12/5/99 Extraction Method EPA 5030E 1P/Tl <br /> Blank 9120020-BLKI - <br /> Ethanol 12/5/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br />—Methyl tert-butyl ether = =_- ��=r--=��— __ - —trU ry _- =,- �2 uu _ <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ethers- _ __ ,._. ND " -r�_2.00 T _. 1. <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 1,2-Drchloroethane-d4 -" - -50 0-- - 541 -- "-- - -760-114 108-- <br /> _ <br /> LCS 9120020-BS1 <br /> Methyl tert-butyl ether 1215/99 500 494 ug/1 700-130 988 <br /> Surrogate 1,2-Drchloroethane-d4 ff 500 515 760-114 105 <br /> Matrix Spike 9120020-MSI L911177-02 <br /> Methyl tert-butyl ether 12/5/99 500 7 19 54 1 ug/1 60 0440 938 <br /> Surrogate 12-Drchloroethane-d4 _ 500 506 " 760-114 101 <br /> Matrix Spike Dn„p 9120020-MSD1 L911177-02 <br /> Methyl tert-butyl ether 12/5/99 Soo 7 19 525 ug/1 600-140 906 250 347 <br /> Surrogate 11-Drchloroethane-d4 500 508 11760-114 102 <br /> Batch 9120029 Date Prepared 1_217199 Extraction Method _EPA 503013 IPr'I'1 <br /> Blank 9120029-BLKI <br /> Ethanol 12/7/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND q1200 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and def nitro <br /> Page 26 of 28 <br />