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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHM AVENUE, STOCKTON,CALIFORNIA
<br /> I
<br /> Casing Depth Groundwater LPH Concentration(Pi?/L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number } {feet) (feet) Benzene Date (feet) (feet) ) e Toluene benzene Xylenes TPH-g MTBE
<br /> ------------------ -- . ...,_ .--- _......
<br /> RW3 08/02/94 889 3035 -2146 000 -- -- -- __ __
<br /> RW3 11/01/94 8 89 3059 -21 70 000 11,000 16,000 2,800 14,000 92,000 --
<br /> RW3 02/17/95 8 89 2808 -19 19 000 9,800 12,000 2,600 11,000 79,000 --
<br /> RW3 05/11/95 8 89 2537 -1648 000 7,600 10,000 2,700 12,000 90,000 --
<br /> RW3 08/24/95 8 89 2672 -17 83 000 9,600 15,000 4,600 20,000 100,000 --
<br /> RW3 10/19/95 8 89 2705 -18 16 000 7,000 12,000 3,400 14,000 87,000 <1,000
<br /> RW3 02/13/96 8 89 2484 -15 95 000 4,800 5,800 2,100 8,700 59,000 <500
<br /> RW3 04/18/96 8 89 2245 -13 56 000 5,100 6,700 2,600 11,000 78,000 <250
<br /> RW3 08/08/96 8 89 2360 -1471 000 4,200 5,900 2,600 12,000 58,000 <1,250
<br /> RW3 11/04/96 8 89 2394 -15 05 000 4,300 4,300 2,600 11,000 67,000 X250
<br /> RW3 02/03/97 8 89 -- -- -- _- -_ --
<br /> RW3 05/08/97 Converted to UVB well
<br /> RW4 01/30/91 923 3480 -2557 000 30,000 41,000 4,500 27,000 170,000 --
<br /> RW4 05/02/91 9 23 3479 -2556 000 16,000 34,000 4,200 22,000 110,000 --
<br /> RW4 07116-17191 923 3569 -2646 000 12,000 31,000 2,700 14,000 110,000 --
<br /> RW4 10/15/91 9 23 3622 -2699 000 13,000 28,000 3,100 15,000 120,000 --
<br /> RW4 01/28/92 9 23 3439 -25 16 000 13,000 30,000 3,600 18,000 110,000 --
<br /> RW4 04/30/92 923 34 04 -2481 000 11,000 25,000 2,800 13,000 98,000 --
<br /> RW4 08/13/92 9 23 36 18 -2695 000 8,500 24,000 2,500 13,000 120,000 --
<br /> RW4 10/08/92 9 23 3678 -2755 000 6,000 17,000 1,700 10,000 95,000 --
<br /> RW4 02/23/93 9 23 3332 -2409 0 00 7,000 16,000 3,000 14,000 88,000 --
<br /> RW4 05/18/93 9 23 3184 -2261 000 5,700 18,000 2,600 4,100 57,000 --
<br /> RW4 08/22/93 923 1220 -2297 0 00 -- -- __
<br /> RW4 12/30/93 9 23 3133 -22 10 000 5,200 23,000 3,500 16,000 88,000 --
<br /> RW4 02/17/94 923 3080 -2157 000 -- -- -- _- __
<br /> RW4 05/10/94 923 3023 -2100 000 2,400 15,000 2,300 9,700 70,000 --
<br /> RW4 08/02/94 923 3179 -2256 000 4,100 26,000 4,000 18,000 100,000 --
<br /> RW4 11/01/94 923 3227 -2304 000 2,700 17,000 2,300 11,000 69,000 --
<br /> RNV4 02/17/95 923 2970 -2047 000 1,000 9,100 1,900 7,600 45,000 --
<br /> RW4 05/11/95 923 2696 -1773 000 1,400 11,000 1,600 7,400 59,000 --
<br /> RW4 08124195 9 23 2800 -1877 000 590 4,500 970 3,700 17,000 --
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