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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING r BP OIL COMPANY SERVICE STATION NO,11193 3202 WEST HAMMER LANE,STOCKTON,CALIFORNIA ALISTO PROJECT NO.10-136 WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D TPH B T E X MTBE HVOC DO LAB ID SAMPLINGI ELEVATION(a) WATER ELEVATION (b) (ugA) (ugA) MA) (ugA) (ugA) (ug4) (ugA) (UgA) (ugA) (ppm) MONITORING (Feet) (Feet) (Feet♦ MW-1 1221/92 3.97 20.40 -16.43 2200 MW-1 04/04/93 3.97 15.51 -11.54 16056 15 ND<0.5 8.9 »• - - - -- --- MW-1 0428433 3.97 1725 -132 92 ND<0.5 ND<O.s 0.6 PACE 8 -- __ _ _ 460 (c) -_ -- MW'1 10/05/93 3.97 18.00 -14.03 6000 450 41 W 16 - MW-1 01107!94 3.97 17.75 -13.78 6600 - - 410 200 350 (c) PACE 45 460 2800 (c) -_ .» PACE OC-1 (d) 01/07/94 - - 8700 460 240 57 600 2800 (c) - - PACE MW-1 04/20/94 3.97 16.98 -13.01 63 -- ND<o.5 ND<0.5 ND<as ND<0.5 120 (c) - 4,0 PACE OC-1 (d) 04,20194 ND<50 - ND<0-5 ND<0.5 Nms ND<0.5 200 (c) - - MW-1 0425/94 3.97 16.97 -13.00 _ PACE - _ _ _ _ MW-1 07128/94 3.97 17,41 -13.44 430 - - 3.6 12 24 7.1 - - 3.9 PACE MW-1 12/09/94 3.97 17.89 -13.92 2200 36 7.4 37 47 4.1 PACE MW-1 03/03/95 3.97 16.55 -12.58 1400 {e) - ND<2.5 ND2.6 NDd,5 ND<5.0 --- - 5.1 ATI QC-1 (d) 03/0.395 --- 1400 (a) - NDQ.5 ND2.5 ND<2.5 ND<5.0 _ --- An MW-1 04112!95 3.97 15.27 -11.30 4700 - 310 ND<5.o 79 450 -• 7.8 ATI MW-1 07120!95 3.97 15.57 -11.50 180 -- 47 0.62 3.7 3.8 -- -- 6.8 An MW-1 11/02/35 3.97 16.45 -12-48 1400 - 330 57 8.3 es 3100 4.3 ATI MW-1 01/16/96 3.97 15.86 -11.89 1400 --- --- 110 ND<5.0 ND<5.0 5.1 3900ATI MW-1 0422/96 3.97 13.75 -9.78 ND<50 - - ND<0.5 ND<1 ND<l ND<1 27 - SPL MW-1 07/12/96 3.97 14.06 -10.09 1100 --- -- 70 ND<l0 ND<10 ND<10 7700 --- 2.4 SPL MW-1 11/14/96 3.97 14.96 -10.99 40000 -- -- 350 NDaS ND 25 NBQS 66000 -- 3.3 SPL MW-1 03/11197 197 12.01 -8.04 ND<50 - ND<05 ND<1.0 ND<1.0 ND<1.0 ND<10 - 4.3 SPL OC-1 (d) 03/11197 ND<50 - N13<05 ND<1.0 ND<7.0 ND<1.0 N1k10 - - SPL MW-1 05!22/97 3.97 12.64 -6.67 60 - - ND<0.5 ND<1.0 ND<1-0 ND<1.0 17 37 SPL MW-1 08106/97 3.97 13.80 -9.83 -- -» -- �- --- •„ - ... - 82 _ MW-1 09/22/97 3.97 13.86 -9.89 ND<50 --- - ND<0.5 1`10<1.0 Np<1.0 ND<1.0 ND<10 -- 6.0 SPL MWA 01/07/96 3.97 13.57 -9.60 ND<50 -- -- ND<0.5 ND<1.0 ND<1.0 ND<1,0 14 -» 57 SPL MW-1 07101/98 3.97 9.86 -5.89 2600 --- -- ND<0.5 ND<7-0 ND<1.0 ND<1.0 7100 - 5.5 SPL MW-1 09118!98 3.97 11.50 •7.53 3000 -- -- ND4,5 ND<1.0 ND<1,0 ND<7.0 3500 - 6.3 SPL 02-Dec-98 PAGE 1