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S TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3708,2705 COUNTRY CLUB BOULEVARD, STOCKTON,CA Reference Depth to Groundwater Ethyl- Total TPH as Other Oxygenates Dissolved Monitoring Elevation Groundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE and Additives Lead Well Date (feet) ((feet) feet) ( g/L) L) ( L} ) ( MW3 05/31/94 050 1158 -1108 490 24 11 22 1,200 NA NA NA MW3 08/30/94 a 050 1325 -1275 420' 18 38 <0 5 1,000 NA NA NA MW3 11/22/94 a 050 1405 -1355 48 <0 5 <0 5 <0 5 160 NA NA NA MW3 01/12/95 a 050 1283 -1233 81 05 14 <0 5 270 NA NA NA MW3 03/31/95 050 NM NC 490 <5 0 67 <5 0 1,300 NA NA NA MW3 04/05/95 050 856 -806 610 <5 0 83 <5 0 1,700 NA NA NA MW3 07/14/95 050 NM NC 15 <0 5 <0 5 <0 5 <50 NA NA NA MW3 07/17/95 050 1031 -981 NS NS NS NS NS NS NS NS MW3 10/05/95 050 1227 -1177 13 <0 5 <0 5 <0 5 <50 NA NA NA MW3 12/01/95 STATION OPERATIONS TRANSFERRED TO NEW WEST PETROLEUM MW3 04/02/96 050 7 19 -669 24 <0 5 <0 5 <0 5 <50 NA NA NA MW3 07/31/96 050 973 -923 580 <10 I I <10 1,400 NA NA NA MW3 10/23/96 050 1088 -1038 20 <0 5 <0 5 <0 5 55 29 NA NA MW3 02/07/97 050 577 -527 8 1 <0 5 <0 5 <0 5 <50 NA NA NA MW3 05/30/97 050 844 -794 23 <0 5 <0 5 <0 5 74 27 NA NA MW3 08/20/97 050 1027 -977 <0 5 <0 5 <0 5 <0 5 <50 19 NA NA MW3 11/24/97 050 1021 -971 1 0 <0 5 <0 5 <0 5 <50 67h ND NA MW3 03/30/98 050 575 -525 <0 5 <0 5 <0 5 <0 5 <50 77h ND NA MW3 06/30/98 050 720 -670 <0 5 <0 5 <0 5 <0 5 <50 59' ND NA MW3 10/05/98 050 869 -8 19 <0 5 <0 5 <0 5 <0 5 <50 53 NA NA MW3 12/16/98 050 8 10 -760 <0 5 <0 5 <0 5 <0 5 <50 62 NA NA MW3 03/05/99 050 661 -611 <0 5 <0 5 <0 5 <0 5 <50 66 NA NA MW3 05/14/99 050709 - 6 59 <0 5 MW3 06/04/99 050 756 -706 NS NS NS NS NS NS NS NS MW3 08/31/99 050 NM NC NS NS NS NS NS NS NS NS MW3 11/23/99 051 NM NC NS NS NS NS NS NS NS NS g 1ptDjvcts173708timaster�wp1g090413708gw As Page 6 of 23