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V Table 2 � Historical Ground Water Analytical Results BTEX, TPH-g,'TPH-d, and MTBE: Van Buskirk Golf Course Facility 1740 Houston Avenue Stockton, California S arrtple ! Date Benzene Toluene . Ethyl Total TPH TP1i MTBE T$A (µg/i) benzene Xylenes C'iasottne Dtesel, C�cg11) (/�gll) ( ,;`. - 1 MW-1 06/22/94 <0.5 ' <0.5 <0.5 <0.5 <50 -<50 NA NA ,10/27/94 <0.5 . <0.5 <0.5 <0.5 - <50, <50 NA NA 09/26/95 NS NS NS NS NS NS• NS - NA 05/06/99 -0.3 <0.3 <0.5 <0.5 <50 <50 <0.5 <5.0 . MW-2 06/22/94 <0.5 <0.5 <0.5 <0.5 <50 . X50 NA NA 10127/94,' <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NA -NA 09/26/95. NS NS . NS NS- NS NS NS NA 05/06/99 X0.3 0.35 <0.5 <0.5 <50 <50 <0.5 <5:0 ' MW-3 06/22/94. 1.4 <0.5 <0.5 1.7' ' 55 . <50 NA NA 10/27/94 <0.5- <0.5 <0:5 <0.5 <50 -<50 NA NA , , 09/26/95 <0.5 <0:5 <0:5 <0.5 <50 <50 NA NA '05/06/99 <0.3 .<0.3' <0.5 <0,5 <50 <50 -< : <5.0 1 . MW-4 05/06/99 <0.3 <0.3 <0.5 .<0.5 <50 <50 660,, 2- MW 5 -MW-5 05/06/99 <0.3 <0.3 <0.5 <0.5 <50 <50 <0 <5.0 ' -Excavation 04/05/95 . 1,000 2,000 800 6,400 17,000 NA NA NA SB-1 12/18/96 12.4 83 98.8 67 5,100 2,500 12.7 NA SB-2 12/18/96 <0.5 •<0.5 <0.5 X0.5 <50 420 4.8 NA ' B- 12/18/96 <0.5 <0.5 X0.5 <0:5' <50 330 <5.0 NA S 3 SB-4 I2/18/96 <0.5 1.6 3.8'< 79.. 2,800 6,000 7.4 NA ' SB-$ 12/18/96- 6,500 35,000 4,500 25,000 93,000 320,000 '560- NA SB-6 ' 12/18/96 <0.5 <0.5- <0.5 <0.5 <50 450 <5.0 NA SB-7 12/18/96 590 4,100 1,900 18,000 72,000 56,000 300 NA ' B-1 05/06/99 <0.5 '<0.5 <0.5 45 <50. <50 <1.0 <5.0 B-2 05/06/99 <0.5 <0.5 <0.5 <0.50 570 <1.0 <5.0 B-3 05/06/99 <0.5 <0.5 <0.5 1'<O..5 f<<--51:0::::::: I30 <1.0 <5.0 ugll-micrograms per liter NA-Not analyzed ' NS-Not sampled MTBE-Methyl-tertiary Butyl Ether ,TBA-'tertiary-Butanol T. ' Advanced Geo Environmental,Inc.