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<br /> Table 1
<br /> Groundwater Monitoring Data
<br /> 1995 to Present
<br /> ARCO Service Station No 548, 1612 Hammer Lane, Stockton, California Page 5 of 6
<br /> Well Elevation Static Top Elevation Groundwater
<br /> Sample of Top Water of of Flow Ethyl- Total
<br /> Number Date of Casing Level Screen Groundwater Direction 1 PHG Benzene Toluene benzene Xylenes MTBE [1] Observations
<br /> VW-1 06/28/99 NM 2599 -- SE Not scheduled for samplmg No FP,No S,O=NE
<br /> VW-1 09/10/99 NM 2833 -- E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-1 12/13/99 NM 2746 E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-1 03/28/00 NM 2423 SE Not scheduled.for sampling No FP,No S,O=NE
<br /> VW-2 (41) 09/29/98 [NP] NM 2901 -- E 13,200 822 <12 5 1,370 754 <125 No FP,No S,Yes 0
<br /> VW-2 (41) 12/30/98 [NP] NM 2747 -- SE 8,950 778 <20 1,180 339 <200 No FP,No S,Yes O
<br /> VW-2 03/31/99 NM 2521 -- E-SE Not scheduled for sampling No FP,No S,No O
<br /> VW-2 06/28/99 NM 2635 -- SE Not scheduled for sampling No FP,No S,O=NE
<br /> VW-2 09/10/99 NM 2929 -- E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-2 12/13/99 NM 2843 E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-2 03/28/00 NM 2524 SE Not scheduled for sampling No FP,No S,O=NE
<br /> VW-3 (40) 09/29/98 [NP] NM 2945 -- E 39,300 2,360 391 1,540 9,790 <500 No FP,No S,Yes 0
<br /> VW-3 (40) 12/30/98 [NP] NM 2728 -- SE 40,500 3,450 287 2,370 11,700 <500 No FP,No S,Yes O
<br /> VW-3 03/31/99 NM 2587 -- E-SE Not scheduled for sampling No FP,No S,No 0
<br /> VW-3 06/28/99 NM 2688 -- SE Not scheduled for sampling No FP,No S,O=NE
<br /> VW-3 09/10/99 NM 2889 -- E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-3 12/13/99 NM 2806 E Not scheduled for sampling No FP,No S,O=NE
<br /> VW-3 03/28/00 NM 2488 SE Not Scheduled for sampling No FP,No S,O=NF
<br /> VW-4 (42) 09/29/98 [NP] NM 2935 -- E 328 171 <0 5 110 612 2,560 No FP,No S,Yes O
<br /> VW-4 (42) 12/30/98 [NP] NM 2720 -- SE 972 <0 5 0 562 <0 5 0 746 2,240 No FP,No S,No 0
<br /> VW-4 03/31/99 NM 2581 -- E-SE Not scheduled for sampling No FP,No S,No 0
<br /> VW-4 06/28/99 NM 2694 -- SE Not scheduled for sampling No FP,No S,O=NE
<br /> VW-4 09/10/99 NM 2900 -- E Not scheduled for samplmg No FP,No S,O=NE
<br /> VW-4 12/13/99 NM 2812 E Not scheduled for samplmg No FP,No S,O=NE
<br /> VW-4 03/28/00 NM 2489 SE Not scheduled for sampling No FP,No S,0= --
<br /> VW-5S 12/30/98 NM Well not located -- Inaccessible because of soil stockpiles
<br /> VW-5S 03/31/99 NM NM -- -- Not scheduled for sampling No FP,Yes S,Yes 0
<br /> VW-5S 06/28/99 NM Dry -- -- Not scheduled for sampling NM
<br /> VW-5S 09/10/99 NM 1463 -- -- Not scheduled for sampling No FP,No S,0=
<br /> VW-55 12/13/99 NM 1464 -- Not scheduled for sampling No FP,No S,0=
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<br /> 5/5100
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