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Embm = M = M = M W = = M � � � �4r TABLE 1 GROUNDWATER MONITORING DATA,FORMhR EXXON RS 7-3708,2705 COUNTRY CLUB BOULEVARD, STOCKTON, CA Reference Depth to Groundwater Ethyl- Total TPH as Oxygenate Monitoring Elevation Groundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE Compounds Well Date (feet) (feet) (feet) GgIL) (µg fl (µg11) (µgll-) (pglL) (Pg/L) (µglL) MW2 02%07/97 207 7 32 -5 25 <0 5 <0 5 <0 5 <0 5 <50 NA NA 05/30/97 992 -7 85 <0 5 <} 5 <0 5 <0 5 <50 50 NA (Screened 08/20/97 1179 -972 -0 5 <0 5 <0 5 <0 5 <50 8 8 NA 12-27 ft 11/24/97 11 71 -964 <0 5 <0 5 <0 5 <0 5 <50 5 81° ND bgs) 03/30/98 723 -5 16 <o 5 <0 5 <0 5 <0 5 <50 64h ND 06/30/98 8 85 -678 -05 <0 5 <0 5 <0 5 <50 7 1' ND 10/05/98 1033 -826 <0 5 <0 5 <0 5 <0 5 <50 60 NA 12/16/98 974 -767 <0 5 <0 5 <0 5 <0 5 <50 8 8 NA 03/05/99 8 18 -6 11 0 5 <0 5 <0 5 <0 5 <50 <2 5 NA 05/14/99 859 -652 <0 5 <0 5 <0 5 <0 5 <50 <2 0 NA 06/04/99 901 -694 NS NS NS NS NS NS NS 08/31/99 NM NC NS NS NS NS NS NS NS 11/23/99 208 NM N( NS NS NS NS NS NS NS 02/10/00 NM NC NS NS NS NS NS NS NS 05/17/00 NM N( NS NS NS NS NS NS NS 08/07/00 NM NC NS NS NS N5 NS NS NS MW3 08/23/91 052 15 15 -1463 NS NS NS NS NS NS NS 08,129/91 1526 -1474 240 14 <2 5 3 5 630 NA NA (Screened 12/13/91 1540 -14 88 270 8 <0 5 <0 5 560 NA NA 12-27 tt 02/11/92 050 1447 -1397 NS NS NS NS NS NS NS bgs) 03/18/92 12 37 -11 87 79 05 07 <0 5 170 NA NA 06/04/92 13 19 -1269 25 <0 5 <0 5 <0 5 87 NA NA 09/28/92 15 82 -15 32 300 59 5 1 73 680 NA NA 12/18/92 15 67 -15 17 1700 150 91 140 4,000 NA NA 04/05/93 940 -890 360 54 30 75 1,100 NA NA 09/23/93 1276 -1226 1 0 09 <0 5 19 <50 NA NA 11/15/93 13 52 -13 02 36 <0 5 <0 5 <0 5 210 NA NA 02/10/94 1239 -1189 950 19 84 16 1,900 NA NA 05/31/94 1158 -1108 490 24 11 22 1,200 NA NA 08130194, 13 25 -1275 420' 1 8 3 8 <0 5 1,000 NA NA 11/22/944 1405 -13 55 48 <0 5 <0 5 <0 5 160 NA NA 01/12/95a 12 83 -12 33 81 0 5 1 4 <0 5 270 NA NA I 11piojetts173708Imasterlwplgg0013708gw als Page 3 of 12