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IABLE 1 GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3708, 2705 COUNTRY CLUB BOULEVARD, SI OCKTON, CA Reference Depth to Groundwater Ethyl- Total TPH as Oxygenate Monitoimg Elevation Gioundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE Compounds Well Date (feet) (feet) (feet) (µg I ) (µg/L) (µg/1 ) (pg/L) (µg/L) (µg/L) (pg/L) MW2 07 31 96 2 07 1 1 53 -946 _0 1� �0 5 <0 5 <50 NA NA 10123/96 12 51 -1044 {} -05 -,05 <0 5 <50 <5 0 NA 0107/97 7 32 -5 25 - 0 ti �0 5 -05 <O 5 <50 NA NA 05'30,'97 992 -7 85 0 5 -0 > <0 5 <0 5 <50 5 0 NA 08120,97 It 79 -972 (1 -0 5 <0 5 <0 5 <50 8 8 NA 11,24/97 11 71 -964 (} �0 S -0 5 <0 5 <50 5 8' ND 03,30/98 7 23 -5 16 (1 <0 5 -0 5 =0 5 <50 64 ND 06 30/98 8 85 -6 78 (} -_0 5 -0 5 <0 5 -50 7 Ih ND 10/05/98 1033 -826 04 < 05 -05 <05 <50 60 NA 12 1698 9 -74 -767 0 -0 5 <0 5 0 5 <50 8 8 NA 03 05199 8 18 -6 11 U -0 5 ,0 5 <0 5 <50 <2 5 NA 051 141199 8 59 -6 52 0 �0 5 -0 5 <0 5 <50 <2 0 NA 06/04/99 901 -694 N5 N5 NS NS NS NS NS 08,31/99 NM NC NS NS NS NS NS NS NS 11 23199 208 NM NC NS NS NS NS NS NS NS 0110/00 NM NC NS NS NS NS NS NS NS 05/17/00 NM NC NS NS NS NS NS NS NS 08107/00 NM 1,C NS NS N5 NS NS NS NS 11/06/00 NM NC NS NS NS NS NS NS NS 02/26/01 NM N( NS N5 NS NS NS NS NS MW3 0823/91 052 15 15 -1461 NS NS NS NS NS NS NS 08129/91 15 26 -14 74 240 14 1-2 5 3 5 630 NA NA (Screened 12/13/91 1540 -14 88 270 8 <0 5 <0 5 560 NA NA 12-27 ft 02/11/92 050 1447 -13 97 NS NS NS NS NS NS NS bgs) 03/18/92 12 37 -11 87 79 0 5 07 <0 5 170 NA NA 06/04/92 13 19 -1269 25 <0 5 �-0 5 <0 5 87 NA NA 09128192 15 82 -15 32 300 59 5 1 7 3 680 NA NA 12/18/92 15 67 -15 17 1 -700 150 91 140 4,000 NA NA 04'05/93 940 -8 90 160 54 30 75 1,100 NA NA 0923193 12 76 -12 26 1 n 0 5 l () -50 NA NA 11 15193 13 52 -1302 36 <0 5 <-0 5 <0 5 210 NA NA I f pmlrits 7370b nllsler+gyp qMl 3718," Nl5 11 1-t _