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r <br /> r <br /> r <br /> r i <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal SS#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna Harding ' 05/30/01 13 32 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical- San Carlos <br /> Reporting <br /> Analyte Result limit' Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-2-22(L105144-30)Water Sampled 05/16/011020 Received 05/16/01'19 45 <br /> Tert-butyl alcohol ND 100 ug/l 1 1050085 05/21/01 05/21/01 EPA 8260B <br /> Methyl tent-butyl ether ND 200 " <br /> Di-isopropyl ether ND 200 " <br /> Ethyl tent-butyl ether ND 200 <br /> Tert-arnyl tnethyl ether ND 200 " <br /> Surrogate 1,2-Drchloroethane-d4 106% 76-114 <br /> NP-2-60(L105144-31)Water Sampled 05116/011110 Received 0511610119 45 0-04 <br /> Tert-butyl alcohol ND 3330 ug/1 3333 1050085 05/21/01 05/21/01 EPA 8260B <br /> Methyl tert-butyl ether - - ND_ _ 667- - " <br /> Di-isopropyl ether ND 667 " <br /> Ethyl tent-butyl ether ND 667 <br /> Tert-amyl methyl ether - - ND - - 667- <br /> Surrogate <br /> 67-Surrogate-1 2-Dichloroethane-d4 - _ - 102% _ 76-114 <br /> NP-2-116(L105144-32)Water Sampled 05/16/0109:30 Received 05/16/0119 45 <br /> Tert-butyl alcohol ND 100 ug/1 1 1050085 05/21/01 05/21/01 EPA 8260B <br /> Methyl tert-butyl ether ND 200 <br />- -Di-isopropyl ether=- —ND- 2 00 "` <br /> Ethyl tert-butyl ether ND 200 1. " <br />-----Tert-amyl methyl ether - _ --- -—-=ND--=--2 00=-- ='-' <br /> " ----- ----="== - "- - - - - -- - - - <br /> Surrogate 1,2-Dichloroethane-d4 104% 76-114 " <br /> Sequoia Analytical-San Carlos The results in this report apply to the samples analyzed in accordance with the chs <br /> custody document This analytical report must he reproduced in its entirety <br /> Page 21 of 33 <br />