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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
<br /> Well Elevation StAhL Top EILIRtion Groundwater
<br /> Sample of Top Watcr of of Flog Ethyl- Total
<br /> Nutnkx Date of Casing Level Serccn GroundIIatLr Direction TPHG Benzine Toluene benzcne Xylenes MTBE 111 Observations
<br /> MW-4 (63) 02/15/95 1157 42 12 4400 -3055 E <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,O=NE
<br /> MW-4 (63) 05/12/95 1157 4028 -2871 E <50 <0 5 <0 5 <0 5 <0 5 NA No 171',No S,No O
<br /> MW-4 (63) 08/29/95 1157 41 72 -30 15 E <50 <0 5 <0 5 <0 5 <0 5 NA No F1',No S,No O
<br /> MW-4 (63) 12/04/95 1157 4044 -2887 E <50 <0 5 <0 5 <0 5 <0 5 NA No H,No S,No O
<br /> MW-4 02/02/96 1157 3854 -2697 E <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No O
<br /> MW-4 (63) 05/10/96 1157 3602 -2445 E <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S,No O
<br /> MW-4 (63) 08/29/96 1157 3760 -2603 E <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S,No O
<br /> MW4 (63) 11/20/96 1157 3671 -25 14 E <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S,No O
<br /> MW-4 (63) 03/19/97 1157 33 08 -2151 E-SL <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S,No O
<br /> MW-4 05/27/97 1157 33 21 -2164 E-SE <50 <0 5 <0 5 <0 5 <0 5 <3 No 171',No S,No O
<br /> MW-4 (62) 08/12/97 1157 3445 -2288 L <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW-4 (64) 11/18/97 1 1 57 3431 -2274 E <50 4 5 2 5 091 2 1 <5 No FP,No S,No O
<br /> MW-4 (63 8) 02/16/98 1157 31 17 -1960 SE <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW-4 (62) 06/23/98 [P] 1157 2852 -1695 SE <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW-4 (62) 09/29/98 [P] 1157 30 13 -1856 E <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW-4 12/30/98 1157 NM -- SE -----------------------Well inaccessible--------------------------
<br /> MW-4 (62) 03/31/99 [P] 11 57 2669 -15 12 E-SE <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW-4 (62) 06/28/99 [P] 1157 2766 -1609 SE <50 <0 5 <0 5 <0 5 <0 5 <5 No 1 P,No S,No O
<br /> MW-4 (62) 09/10/99 [P] 1157 2954 -1797 L <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No O
<br /> MW4 (62) 12/13/99 [P] 1157 2880 -1723 E <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S,O=NE
<br /> MW-4 (62) 03/28/00 [P] 1 1 57 2571 -14 14 SE <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S,No O
<br /> MW-4 (63) 06/26/00 [P] 1157 2653 -1496 E <50 <0 5 <0 5 <0 5 <0 5 <2 0[2] No FP,No S,No O
<br /> MW-4 09/28/00 [P] 1 l 57 2894 -1737 E-NE <50 <0 5 <0 5 <0 5 <0 5 <2 5 No FP,No S,No O
<br /> C lARCO\05481QIRLY10548Q300 Delta
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