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�� �� s �� � wi w� �� ins �1• s �� �■■■� �� � � I• � <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 /> V4 07/16-17/91 938 3306 -2365 004 Not sampled-LPH <br /> V4 10/15/91 938 3374 -2434 003 Not sampled-LPH <br /> V4 01/28/92 938 3192 -2254 Sheen 23,000 63,000 5,300 27,000 220,000 -- <br /> V4 04/30/92 938 3148 -2209 001 Not sampled-LPH <br /> V4 08/13/92 938 3360 -2417 007 Not sampled-LPH <br /> V4 10/08/92 938 3420 -2473 012 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 02/17/94 938 2889 -1951 000 -- -- -- -- -- <br /> V4 05/10/94 938 2854 -1916 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 2782 -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 2360 -1422 Sheen -- -- -- -- -- -- <br /> V4 11/04/96 938 2402 -1464 000 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 -1104 Sheen -- -- -- -- -- -- <br /> V4 08/26/97 822 2080 -1247 0 15 -- -- -- -- -- -- <br /> V4 11/11/97 822 2134 -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 -887 013 -- -- -- -- -- -- <br /> V4 11/18/98 822 1753 -924 009 -- -- -- -- -- -- <br /> V4 03/30/99 822 -- -- -- -- -- -- -- -- <br /> V4 05/05/99 822 1595 -772 001 -- -- -- -- -- -- <br /> V4 08/20/99 822 1761 -939 000 637 5 14 145 537 190 126 <br /> g%pro3ects%739421masterlwplq 100513942gw xis Page 54 of 58 <br />