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' FROM Ground Zero Rnalysr5 • PHONE NO. : 209 838 9883 •Feb. 24 1999 10:19NN P4 <br /> TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles Property <br /> Stockton, California <br /> Page 3 of 3 <br /> (in pans per billion) <br /> Sample DateDIPS ETBt MTBE TAME <br /> MW12 05198 1.9 <1.0 <5.0 <1.0 —49- <br /> cont. <br /> 9cont. 08/98 3.4 <1.0 <1.0 <1.0 58 <br /> 11198 3.3 <1.0 <1 <1.0 45 <br /> 02/99 2.7 <1.0 1.2 <1.0 18 <br /> MW13 11197 <5.0 <5.0 <5.0 <5.0 <50 <br /> 02/98 <30 <30 <30 <30 <500 <br /> 05/98 <60 <60 <60 <60 <600 <br /> 08198 <50 <50 <50 <50 <250 <br /> 11198 <100 <100 <100 I <100 <500 <br /> 02199 <100 <100 <100 <100 <5,000 <br /> NOTES: <br /> Analyzed using modified EPA method 8260. <br /> Bold values Indicate vale at or above method detection limit. <br /> DIPE = Diisopropyl ether <br /> ETRE = Ethyl tert-butyl ether <br /> MTBE = Methyl tart-butyl ether <br /> TAME = tert-amyl methyl ether <br /> TBA = ten-butanol (tertiary butyl alcohol) <br /> < = Less than the indicated detection limit <br /> • = Resampled 12/16/97 <br /> roWgmntbt3oxy_lab <br />