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I • - ' TABLE 3 x ANALYTICAL RESULTS OF GROUND WATER SAMPLES ' EPA METHOD 8260 Modified Grant Line Gas & Food 2420 Grant Line Road, Tracy, California ' (1911) Constituent Date MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 _ di-isopropyl ether 01-30-98 <30 <10 <1 0 <1 0 <5 0 <1 0 -- -- (DIPE) 06-18-98 <10 <10 <10 <10 <10 <10 -- -- ' 09-28-98 <50 <10 <1 0 <3 0 <3 0 <10 _ __ 12-17-98 <10 <l 0 <1 0 <5 0 <5 0 <1 0 03-25-99 <5 0 <1 0 <10 <3 0 <1 0 <1 0 <10 <1 0 06-21-99 <10 <10 <10 <10 <10 <10 <10 <10 ' 09-20-99 <5 0 <10 <1 0 <1 0 <1 0 <1 0 <1-0 <1-0 ethyl tertiary 01-30-98 <30 <10 <10 <110 <5 0 <1 0 butyl ether 06-18-98 <1 0 <10 <10 <1 0 <1 0 <1 0 -- -- (ETBE) 09-28-98 <50 <1 0 <10 <3 0 <3 0 <1 0 = __ 12-17-98 <10 <1 0 <10 <5 0 <5 0 <10 03-25-99 <5 0 <10 <10 <3 0 <1 0 <1 0 <1 0 <1 0 06-21-99 <10 <10 <10 <10 <10 <10 <10 <10 ' 09-20-99 <5 0 <1 0 <1 0 <1 0 <1 0 <l 0 <1 0 <1 0 methyl tertiary- 01-30-98 72 <5 0 <5 0 320 260 <5 0 -- -- butyl ether 06-18-98 280 21 12 11 811 19 -- ' (MTBE) 09-28-98 1,500 30 <1 0 79 57 1 8 == 12-17-98 370 <10 <10 45 29 <10 03-25-99 190 <10 <10 110 52 <10 38 <10 06-21-99 61 <10 <10 17 18 17 25 <10 ' 09-20-99 170 <1 0 21 81 87 <1 0 77 <1 0 tertiary amyl 01-30-98 <1 0 <1 0 <1 0 <10 <5 0 <1 0 -- -- methyl ether 06-18-98 <1 0 <1 0 <1 0 <1 0 <1 0 1 5 -- -- (TAME) 09-28-98 <50 -�1 0 <1 0 <3 0 <3 0 <1 0 =� -_ 12-17-98 <10 <1 0 <1 0 <5 0 <5 0 <1 0 03-25-99 <5 0 <1 0 <1 0 <3 0 <1 0 <1 0 <1 0 <1 0 06-2t-99 <10 <10 <10 <10 <10 <10 <10 <I0 ' 09-20-99 <5 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 tertiary butyl 01-30-98 <5 0 <5 0 <5 0 <50 <50 <5 0 -- -- alcohol(TBA), 06-18-98 <5 0 <5 0 <5 0 51 <5 0 <5 0 -- -- 09-28-98 <250 <5 0 <5 0 <15 <15 <5 0 -- ^- 12-17-98 <50 <5 0 <5 0 <25 <25 <5 0 103-25-99 <25 <5 0 <5 0 <15 <5 0 <5 0 <5 0 <5 0 06-21-99 <5 0 <5 0 <5 0 60 1111 <5 0 <5 0 <5 0 09-20-99 <25 <50 <50 <5 0 <50 <50 <50 <50 micrograms per liter(pzg/l) ' - Not analyzed iAdvanced GeoEnvironmental Inc