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TAIL' 1 . <br /> GROUND WATER MONITORING DATA <br /> Ekon Service Station 7-3708 <br /> 2705 Country Club Boulevard <br /> Stockton, California <br /> Depth to Ground <br /> Reference Ground Water Ethyl- Total TPPH as <br /> Monitoring Elevation Water Elevation Benzene Toluene benzene Xylenes gasoline MTBE <br /> Well Date (ft) (ft) (ft) (gg/L) (Rg/L) (gg/L) (µg/L) (gg/L) (gg/L) Comments <br /> MW-2 08/23/91 209 1659 -1450 NS NS NS NS NS NS No LPH or sheen <br /> 08/29/91 1669 -1460 <0 5 <0 5 <0 54 <0 5 82 NA No LPH or sheen <br /> 12/13/91 1681 -1472 <0 5 <0 5 0 9 <0 5 <50 NA No LPH or sheen <br /> 02/11/92 207 1589 -13 82 NS NS NS NS NS NS No LPH or sheen <br /> 03/18/92 1382 -1175 0 9 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 06/04/92 1461 -1254 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 09/28/92 1728 -1521 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 12/18/92 1704 -1497 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 04/05/93 1087 -880 <0 5 <0 5 <0 5 <0 5 <50d NA No LPH or sheen <br /> 09/23/93 1438 -1231 0 6 0 9 <0 5 14 <50 NA No LPH or sheen <br /> j 11/15/93 1500 -12 93 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> j 02/10/94 13 86 -1179 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 05/31/94 13 06 .1099 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 08/30/94° 1488 -1281 10 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 11122194' 1551 -1344 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 01112195' 1429 -1222 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 03/31/95 NM NC NS NS NS NS NS NA NM <br /> 04/05/95 9 98 -791 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 07/14/95 NM NC <0 5 <0 5 <0 5 <0 5 <50 NA NM <br /> 07/17/95 1182 -975 NS NS NS NS NS NS No LPH or sheen <br /> 10/05/95 1381 -1174 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 04/02/96 863 -4556 10 <0 5 0 6 0 53 <50 NA No LPH or sheen <br /> 07/31/96 1153 -946 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 10/23/96 1251 -10 44 <0 5 <0 5 <0 5 <0 5 <50 <5 0 No LPH or sheen <br /> 02/07/97 732 -525 <0 5 <0 5 <0 5 <0 5 <50 NA No LPH or sheen <br /> 05/30/97 992 -785 <0 5 <0 5 <0 5 <0 5 <50 No LPH or sheen <br /> 08/20/97 1179 -972 <0 5 <0 5 <0 5 <0 5 <50 8 No LPH or sheen <br /> (Page 2 of 9) 93-809 XIS <br />