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! i <br /> • <br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration( /L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) feet feet Benzene Toluene benzene Xylenes TPH- <br /> � } � MTBE <br /> V4 08/13/92 938 3360 -2417 007 Not sampled-LPH <br /> V4 10/08/92 938 3420 -2473 0 12 Not sampled- LPH <br /> V4 02/23/93 938 3085 -2147 000 15,000 35,000 4,300 23,000 150,000 -- <br /> V4 05/18/93 938 2935 -1997 000 13,000 47,000 5,900 28,000 240,000 -- <br /> V4 08/22/93 938 2960 -2022 000 9,400 42,000 3,900 21,000 150,000 -- <br /> V4 12/30/93 938 2926 -1988 000 10,000 36,000 4,800 26,000 150,000 -- <br /> V4 02/17/94 9 38 2889 -19 51 000 -- -- -- __ __ <br /> V4 05/10/94 938 28 54 -19 16 002 Not sampled-LPH <br /> V4 08/02/94 938 2993 -2055 002 Not sampled-LPH <br /> V4 11/01/94 938 3034 -2096 000 <br /> V4 02/17/95 938 27 82 -1844 000 <br /> V4 05/11/95 938 25 12 -1574 Sheen <br /> V4 08/24/95 938 -- -- <br /> V4 10/19/95 938 2685 -1747 Sheen <br /> V4 02/13/96 938 2474 -1536 Sheen <br /> V4 04/18/96 938 2236 -1298 Sheen <br /> V4 08/08/96 938 23 60 -1422 Sheen -- -- __ __ __ __ <br /> V4 11/04/96 938 2402 -14 64 0 00 3,200 24,000 2,900 16,000 120,000 <1,250 <br /> V4 02/03/97 938 1940 -1002 Sheen -- -- -- __ __ -- <br /> V4 05/08/97 822 1926 -11 04 Sheen <br /> V4 08/26/97 822 2080 -1247 0 15 <br /> V4 11/11/97 822 21 34 -13 12 Sheen <br /> V4 03/03/98 822 1567 -744 001 <br /> V4 05/20/98 822 1562 -735 007 <br /> V4 08/19/98 822 17 19 -887 0 13 -- <br /> V4 11/18/98 822 1753 -924 009 <br /> V4 03/30/99 822 -- -- __ <br /> V4 05/05/99 822 1595 -772 0 01 -- -- -- __ __ -- <br /> V4 08/20/99 822 1761 -939 000 63 7 5 14 14 5 537 190 12 6 <br /> V4 12/06/99 822 17 85 -956 010 -- -- - <br /> __ __ <br /> V4 02/29/00 822 1525 -699 006 <br /> V4 05/16/00 822 1526 -7 01 004 <br /> g Sprojecis\739421masterlwp1g0643U9421,w As Page 44 of 49 <br />