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<br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH Concentration(µg/L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date feet feet (feet) feet Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> SW2 06/11/03 753 1873 -1120 000 2,570 200 620 220 6,770 h 380
<br /> SW2 06/11/03 753 <0 5*
<br /> SW2 09/17/03 7 53 2014 -1261 000 2,170 275 876 408 7,840 h 804
<br /> SW2 09/17/03 753 <0 5*
<br /> SW2 12/08/03 753 2010 -1257 000 1,190 104 402 109 5,820 h 139
<br /> SW2 12/08/03 753 <0 5*
<br /> SW2 03/02/04 753 1862 -1109 000 1,080 80 320 90 5,710 h <5*
<br /> SW2 06/28/04 753 1992 -1239 000 -- -- -- -- -- --
<br /> SW2 } 06/29/04 753 -- -- -- 1,190 140 370 220 4,680 h <0 5*
<br /> SW2 09/27/04 753 2074 -1321 000 -- -- -- -- -- --
<br /> SW2 1 09/28/04 753 -- -- -- 1,680 225 775 375 9,730 h <0 5*
<br /> SW2 12/01/04 753 2033 -1280 000 -- -- -- -- --
<br /> SW2 12/02/04 753 -- -- -- 1,290 162 548 237 2,570 h <0 5*
<br /> SW2 1 03/24/05 753 1840 -1087 000 564 74 184 77 2,260 h <0 5*
<br /> SW2 06/22/05 753 1846 -1093 000 -- -- -- -- -- --
<br /> SW2 06/23/05 753 -- -- -- 1,390 178 572 222 4,870 h <0 5*
<br /> SW2 10/12/05 7.53 1994 -1241 000 -- -- - - -- --
<br /> SW2 10/13/05 753 -- - -- 1,400 36 94 45 6,300 h <5 0
<br /> SW2 l,p 10/13/05 753 -- -- -- 1,500* 42* 92* 56* 5,600 h <5*,<10*
<br /> UVB-MW 1 02/28/97 742 1867 -- 000 7,200 18,000 2,000 11,000 99,000 1,100
<br /> UVB-MW1 05/08/97 742 1876 -1134 000 5,900 15,000 1,800 9,000 86,000 1,600
<br /> UVB-MW1 05/08/97 742 <200*
<br /> UVB-MW 1 d 08/26/97 742 2050 -1308 000 700 18 19 42 2,400 77
<br /> UVB-MW1 10/02/97 742 -- -- -- 1,200 1,400 240 2,400 17,000 300
<br /> UVB-MW1 11/11/97 742 21 10 -1368 000 9,400 16,000 2,300 11,000 91,000 2,200
<br /> UVB-MW1 11/11/97 742 <200*
<br /> WB-MW 1 03/03/98 742 15 55 -8 13 000 13,000 36,000 3,600 18,000 140,000 3,200
<br /> UVB-MW1 03/03/98 742 <200*
<br /> UVB-MW 1 05/20/98 742 1523 -781 000 12,000 32,000 3,500 19,000 140,000 3,300
<br /> UVB-MW1 05/20/98 742 <133*
<br /> UVB-MW l 08/19/98 742 1698 -956 000 13,000 22,000 2,900 14,000 100,000 <1,250
<br /> UVB-MW1 08/19/98 742 <100*
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