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tttttttttt� w w w w �■ w w w w tt�w tttw■ �w w � a.w .w. TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA Method 80151802018260 Modified Former Curtiss Pontiac Buick - 2450 Toste Road, Tracy, California ethyl methyl tertiary Well di tertiary tertiary, amyl Sample Depth Ethyl- isopropyl butyl I.D. TPH-g TPH-d Benzene Toluene Xylenes butyl butyl methyl Date to GW benzene ether ' alcohol Screen ether ether ether (DIPE) ETBE MTBE TAME (TBA) MW-2B 02-27-98 5 63 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <5 0 <5 0 <5 0 <5 0 5- 15 09-28-98 708 <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 <1 0 <l 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 06-21-99 708 <50 <50 072 13 <0 5 16 <1 0 <1 0 <1 0 <1 0 <5 0 09-21-99 7 01 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 4 7 <1 0 69 12-07-99 7 17 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 1.9 <1 0 <5 0 MW-3 02-27-98 631 <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 87 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 12-17-98 7 85 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <l 0 <1 0 <5 0 03-25-99 769 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <1 0 <1 0 <l 0 <5 0 06-21-99 7 85 <50 <50 <0 5 is <0 5 1.7 <1 0 <1 0 <1 0 <1 0 <5 0 09-21-99 774 <50 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 12-07-99 7 88 <50 <50 1 <0 5 <0 5 <0 5 <0 5 MW-4 12-07-99 725 1.,600 500 280 13 15 76 <1 0 <1 0 6 2 <1 0 <5 0 S- IS Notes Ground i►ater depth measurements in feet V%A micrograms per liter or parts per billion ppb 1 TPN-g Total petroleum hydrocarbons quantified as gasoline TPN-d Total petroleum hydrocarbons quanGfed as diesel 'ground water sample collected from 2420 Grant Line Road Concentrations in Italics indicate suspected crass-contammation Advanced GeoEnwronmental Inc