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1551 <br /> Sequoia San Carios CA94070-41 11 <br /> 4D (650) 232-9600 <br /> 1%ff Analytical FAX (650) 232-9612 <br /> lame Tech Services Project Shell(l) Sampled 4/22/99 <br /> 1680 Rogers Avenue Project Number Shell 2575 Country Club Blvd,Stockton Received 4/23/99 <br /> San Jose,CA 95112 Pro ect Manager Fran Thte Reported 5/13/99 <br /> Volatde Organic Oxygenated Compounds by EPA Method 8260A/Quahty 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 % Not <br /> Batch 90401.52 Date Prepared 4129199 Extraction Method EPA 5030B FP/TI <br /> Blank 9040152-BLKI <br /> Ethanol 4/29/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tert-butyl ether " 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-Dtchloroethane-d4 500 504 760-114 101 <br /> Blank 9040152-BLK2 <br /> Ethanol 4/30/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> yI tert-butyl ether ND 200 <br /> -amyl methyl ether ND 2.00 _ _-- <br /> Surrogate 12-Dichloroethane-d4 500 512 " 760-114 102 <br /> LCS 9040152-BS1 <br /> Methyl tert-butyl ether 4/29/99 500 487 ug/I 700-130 974 <br /> Surrogate 1,2-Dtchloroethane-d4 11Soo 511 760-114 102 <br /> LCS 9040152-BS2 <br /> Methyl tert-butyl ether 4/30/99 500 478 ug/l 700-130 956 <br /> Surrogate 1,2-Dtchloroethane-d4 f, 500 508 if760-114 102 <br /> Matnx Spike 9040152-MS1 <br /> Methyl tert-butyl ether 4/30/99 500 499 ug/l 600-140 -- <br /> Surrogate 1 2-Dtchloroethane-d4 " 500 532 760-114 106 <br /> Matrix Spike Duo 9040152-MSD1 <br /> Methyl tert-butyl ether 4/30/99 Soo 508 ug/l 600-140 250 <br /> Surrogate 1,2-Dtchloroethane-d4 500 525 It760-114 105 <br /> uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 5 o£6 <br />