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� � � >♦ � � i i i i ti i : � TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA Method 8015/802018260 Modified Fon-ner Curtiss Pontiac-Buick - 2450 Toste Road, Tracy, California di- ethyl Methyl tertlafy Well tyi Sample Mpth to Ethyl- 150propyl tertiary tertiary- amyl tertiary bu I )3 `IPHg TPH-d $envac 'toluene Xylenes methyl alcohol Date GW benzene ether butyl ether butyl.ethermethyl (TBA) Screen ilr IPE) (ETRE) (1v TDE) 3 x MW-2A 02-27-98 5 55 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <5 0 <5 0 <5 0 <5 0 25 - 30 09-28-98 700 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 12-17-98 7 04 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 03-25-99 689 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <10 <1 0 <1 0 <5 0 06-21-99 7 04 57 <50 15 64 14 7 5 <1 0 <1 0 <1 0 <10 <5 0 09-21-99 692 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <10 <10 <5 0 12-07-99 7 08 <50 <50 14 <0 5 <0 5 <0 5 <10 <1 0 <1 0 <1 0 <5 0 03-17-00 670 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 MW-2B 02-27-98 563 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <5 0 <5 0 <5 0 <5 0 5 - 15 09-28-98 7 08 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 12-17-98 7 12 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <10 <1 0 <5 0 03-25-99 6 93 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <1 0 <1 0 <1 0 <5 0 06-21-99 7 08 <50 <50 0.72 13 <0 5 16 <1 0 <1 0 <1 0 <1 0 <5 0 09-21-99 701 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 47 <1 0 6 4 12-07-99 7 17 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 19 <1 0 <5 0 03-17-00 1 673 1 <50 1 <50 1 <0 5 1 <0 5 1 <0 5 1 <0 5 1 <1 0 1 <1 0 14 1 <1 0 <5 0 Aotes Ground water depth measurements in teet i }igfl micrograms per liter or parts per billion,ppb TPH g Total petroleum hydrocarbons quantified as gasoline TPH d Total petroleum hydrocarbons quantified as diesel *ground water sample collected from 2420 Grant Line Road Concentrations in Italics indicate suspected cross contamination Advanced GeoEm ironmental Inc