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i • i TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING BP OIL COMPANY SERVICE STATION NO.11192 1403 COUNTRY CLUB BOULEVARD,STOCKTON,CALIFORNIA ALISTO PROJECT NO.10-037 I WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G B T E X MTBE DO LAB ID SAMPLING/ ELEVATION(a) WATER ELEVATION (b) (ug4) (ug/l) (ug4) (ugA) (ug/1) MA (ppm) MONITORING (Feet) (Feet) (Feet) MW-t 05101!90 5.52 25.11 -19.59 140 1 ND NO NO - PRE MW-1 08/05/91 5.52 DRY - --- PRE MW-1 1210"1 5.52 DRY - - - - - - PRE MW-1 0309W 5.52 DRY PRE MW-1 06/19/92 5.52 DRY --- - --- --- - - - ANA MW-1 09/18/92 5.52 DRY - -- - - - - ANA MW-1 (c) 12/09/92 5.52 DRY -- - - -- - - ANA MW-1 02/15/95 5.52 --- -- -- -- -- - - ANA MW-1 04/21/95 5.52 23.82 -18.30 820 27 2.6 3.1 5.6 --- 4.5 ATI QC-1 (d) 04/21/95 -- -- --- 720 31 2.9 3.5 5.7 --- ATI MW-1 07/19/95 5.52 22.92 -17.40 620 40 2 2.4 2.3 - 5.2 ATE MW-1 (e) 10120!95 5.52 23.32 -17.60 440 16 0.51 0.73 2.2 6.4 4.7 ATE QC-1 (d)(a) 10/20155 -- -- --- 480 17 ND<0.50 ND<0.50 1.5 ND<5A -- ATI MW-1 10!20!95 --- - 450 30 0.67 0.60 1.0 5.3 4.4 ATE QC-1 (d) 1GV20195 --- - -- 460 'r 29 0.91 0.52 1.5 ND<5.0 --- ATE ��(e) 04!23/96 5.52 19.8 -14.35 ND<500 ' 11 ND<0.5 ND<0.5 ND<0.5 r9 j --- SPL MW-1 04/23/96 5.52 --- --- ND<500 10 ND<0.5 ND<0.5 ND<0.5 42 - SPL MW-2 (ty 05/01/90 5.96 25.23 -- NO ND ND NO NO -- PRE MW-3 05/01/90 5.52 25.23 -19.71 200 33 NO 2 1.5 --- - PRE MW-3 08/05/91 5.52 DRY --- --- ... ... ... PRE MW-3 12109/9i 5.52 DRY - - - - -- - PRE MW-3 03+09192 5.52 DRY -- - - - - PRE MW-3 06119/92 5.52 DRY --- - --- --- -- - - - ANA MW-3 09!18!92 5.52 DRY --- ANA MW-3 12/09/92 5.52 DRY --- - - - - - ANA MW-3 03111/93 5.52 DRY -- - PACE MW-3 06115/93 5.52 27.02 -21.50 - PACE MW-3 09/15193 5.52 27.43 -21.91 - - - PACE MW-3 12!22193 5.52 27.30 -21.78 2300 31 6.5 120 220 - - PACE OC-i (d) 12/22/93 -- -- --- 2300 31 6.6 120 220 - - PACE MW-3 04/01/94 5.52 26.42 -20.90 --- --- •-- --- MW-3 07/27/94 5.52 26.50 -20.98 920 8.2 2 41 64 --- 3.2 PACE QC-1 (d) 07P27194 --- --- -- 1100 8.6 2.4 60 90 -- PACE MW-3 11/30/94 5.52 26.86 -21.34 --- -- .- MW-3 02/15195 5.52 26.55 -21.03 1200 10 1.2 85 110 - 3.5 ATI OC-1 (d) 02/15/95 -- --- --- 950 9.1 0.99 59 79 --- ATI MW-3 04/21/95 5.52 24.58 -19.06 --- --- --- --- - MW-3 07/19/95 5.52 23.69 -18.17 --- --- - --- --- - MW-3 (e) 10@0195 5.52 24.11 -18.59 520 5.6 ND<0.50 2.2 1.4 410 4.3 ATI MW-3 10/20/95 5.52 --- 520 4.7 ND<0.50 14 12 240 4.7 ATE MW ) 04/23196 5.5220-60 -1528 ND<500 0 " 5.7 2 2 1 cll � T SPL W-3 04!23196 5.52 ND<500 5.1 ND<0.5 10 5 280 SPL MW-3 (d) 04!2311996 5.52 - - ND<500 5.1 ND<0.5 12 4 240 -- SPL IR,liin-9fr PAGE 1