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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 X lenes TPH-g MTBE
<br /> SWI 10/19/95 -- -- Air sparging well--samples not collected
<br /> SW 1 02/13/96 -- -- Air spargmg well--samples not collected
<br /> SW 1 04/18/96 -- -- Air spargmg well--samples not collected
<br /> SW 1 08/08/96 -- Air spargmg well--samples not collected
<br /> SW1 11/04/96 -- 2424 -- 000 2,400 3,100 290 2,800 25,000 <250
<br /> SW1 12/04/01 825 -- -- -- -- -- -- -- -- --
<br /> SWI 03/05/02 825
<br /> SWI 06/11/02 825 -- -- -- -- -- -- -- __ __
<br /> SWI 09/10/02 825
<br /> SWI 12/18/02 825 -- -- --
<br /> SWI
<br /> -SW1 03/24/03 825 19 15 -1090 000 -- -- -- -- -- --
<br /> SWI 03/25/03 825 -- -- -- 1,750 1,910 426 1,680 18,100 h 620
<br /> SWI 03/25/03 825 <5*
<br /> SWI 06/11/03 825 1926 -1101 000 1,970 2,510 570 2,080 18,700 h 58 0
<br /> SW1 06/11/03 825 <2 5*
<br /> SWI 09/17/03 825 2064 -1239 000 2,210 1,810 534 1,690 17,800 h 102
<br /> SWI 09/17/03 825 <5*
<br /> SWI 12/08/03 825 20 64 -1239 000 1,720 1,610 416 1,360 18,900 h 789
<br /> SW1 12/08/03 825 <0 5*
<br /> SWI 03/02/04 825 19 15 -1090 000 1,520 1,680 379 1,420 13,400 h 179
<br /> SWI 03/02/04 825 <5*
<br /> SWI 06/28/04 825 2030 -1205 000 -- -- -- -- -- --
<br /> SWI
<br /> -SW1 06/29/04 825 -- -- -- 1,830 1,960 549 1,720 18,400 h <0 5*
<br /> SWI 09/27/04 825 21 17 -1292 000 -- -- -- -- -- --
<br /> SWI 09/28/04 825 -- -- -- 2,240 2,050 614 1,880 19,300 h <0 5*
<br /> SWI 12/01/04 8 25 2082 -1257 000 -- -- -- -- -- --
<br /> SWI 12/02/04 825 -- -- 946 2,830 788 3,310 20,000 h <0 5*
<br /> SWI 03/24/05 8 25 1898 -1073 000 1,760 1,990 469 1,540 17,800 h <0 5*
<br /> SWI 06/22/05 825 19 02 -1077 000 -- -- -- -- -- --
<br /> SWI 06/23/05 825 -- -- -- 1,990 2,180 548 I,940 17,300 h <0 5*
<br /> SWI 10/12/05 825 2041 -12 16 000 -- -- -- -- -- --
<br /> SWI 1 10/13/05 825 -- -- -- 1,800 1,600 390 1,400 14,000 h <5*
<br /> SWI 12/22/05 825 2024 -1199 000 1,500 1,900 420 1,800 13,000 h <250
<br /> g 1projects%73942\nasterlwplq 120513942gw As page 42 of 59
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