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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING BP OIL OOMPANY SERVICE STATION NO.11193 3202 WEST HAMMER LANE,STOCKTON,CALIFORNIA ALJSTO 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 SAMPLING! ELEVATION(a) WATER ELEVATION (h) (UgA) (UO 444) (UgA) PGO) (UgA) (ugA) (ugA) PA {ppm) MONITORING (Feet) (Feet) (Feet) MW-5 0412594 4.38 17.40 -13.02 170 - -- 34 10 ND<0.5 8.1 -- - 3.9 PACE MW-5 07!2&94 4.38 17.86 -13.48 1000 -- -- 440 19 10 38 --- 3.9 PACE OG1 (d) 07!2&94 -- -» 1200 - 470 23 11 46 -- - - PACE MW-5 12/09/94 4.36 18.34 •13.96 930 -- -- 260 5.3 31 21 -- -- 4.6 PACE OC-1 (d) 12/09/94 --- -- --- 1000 - - 280 6 34 24 ». - PACE MW-5 03/03+95 4.38 16.99 -12.61 1200 --- - 450 7.4 5.9 28 -- - 5.4 ATI MW-5 04/12/95 4.38 15.71 -11.33 ND<50 -- - 9.0 ND<0.50 2.6 1.5 - - 7.9 ATI MW-5 07/20/95 4.38 16.00 •11.62 4100 (e) -- 220 ND<5.0 28 ND<10 - - 6.7 ATI MW-5 11/02/95 4.38 16.90 -12.52 220 -- - 44 1.4 8,7 7.4 ND<5.0 -- 3.6 ATI MW-5 0111656 4.38 16.27 -11.89 160 - •- 47 3.0 13 11 ND<5.0 --- - ATI MW-5 0492296 4.38 14,17 -9.79 100 •-- -- 48 3 S 11 ND<10 -- -- SPL MW-5 07/12+196 4.38 14.46 -10.08 960 •- -- 320 3.8 78 42.2 31 2.9 SPL MW-5 11/14196 4.38 15.36 •10.98 560 --- 180 ND<1.0 49 17 19 -- 3.1 SPL MW-5 03/11197 4.38 12.42 -8.04 ND<50 -- --- 0.52 ND<1.0 ND<1.0 ND<1.0 ND<10 -- 3.7 SPL MW-5 05122/97 4.38 13.04 -8.66 60 --- -- ND<0.5 ND<1.0 ND<S.0 ND<1.0 ND<10 4.9 SPL MW-5 OBAD"7 4.38 13.90 -9.52 -- --- --• -- •- -- -- -- - 6.2 - NMhS 09122197 4.38 13.99 -9.61 ND<50 -- -- ND<O.5 ND<1.0 ND<1.0 ND<1.0 ND<10 - 7.0 SPL QC-1 (d) 09922197 -- -- --- ND<50 - ND<0.5 ND<1.0 N04.0 ND<1.0 ND<10 - - SPL MW-5 0V07/98 4.38 13.98 -9.60 ND<W - ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 - 6.3 SPL MW-6 04125!94 3.56 16.73 -13.17 53 - NDc0.5 ND<0.6 0.6 2.4 65 (c) --- 2.0 PACE MW-6 07Y2B94 3.56 17.20 •13.64 69 -- ND<0.5 ND<0,5 ND<0.5 ND<0.5 -- -- 2.2 PACE MW-6 1210994 3.56 17.70 •14.14 ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<1 -- - 3.5 PACE MW-G 0.'1103/95 3.56 16.34 -12.78 ND<50 (e) - 0.83 ND<0.50 ND<0.50 ND<1.0 4.3 ATI MW-6 0411295 3.56 15.05 -11.49 57 --- •- N04.50 0.52 NDc0.50 ND<1.0 - -- 4,6 ATI MW-6 07!20135 3.56 15.37 -11.81 ND<50 -- -- ND<6.50 ND<O,50 ND<o.50 ND<1.0 -- -- 7.3 ATI MW-6 1110255 3.56 16.24 -12.68 ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<7.0 55 --- 4.3 ATI MW-6 01/16136 3.56 15.65 -12.09 ND<50 -•- - ND<0.50 ND<0.50 ND<0.50 ND<1.0 89 -_ -- AT1 MW-6 0412296 3.56 13.53 -9-97 ND<50 -- - ND<0.5 ND<1 ND<1 ND<t 58 -- - SPL MW-6 07/12196 3.56 13.85 -10.29 ND<50 -- - ND<0.5 ND<t ND<7 ND<1 62 -- 3.3 SPL MW-6 11/14/96 3.56 14.75 •11.19 BO -- ND<0.5 ND<1.0 ND<7.0 2.1 64 --- 3.9 SPL MW-6 03/11/97 3.56 11.74 -8,18 120 -- ND<05 ND<1.0 ND<1.D ND<1.0 130 -- 3.9 SPL MW-6 05122/97 3.56 12.34 -8.78 100 - ND<U.5 ND<1.0 ND<1.0 ND<1.0 57 -- 3,7 SPL MW-6 08/06/97 3.56 13.20 -9.64 - -- - - - - --- 6.2 - MW-6 09122!97 3.56 13.31 -9.75 ND<50 -- - ND<0.5 ND<1.0 ND0.0 ND<1A ND<10 6.3 SPL MW-6 01/07/96 3.56 13.44 -9.86 ND<50 --- ND<0.5 ND<1.0 ND0.0 ND<1.0 17 5,9 SPL MW-7 0412554 4A6 17.59 -13.13 76 - - 1.0 ND<0.5 ND<0.5 2.0 - -- 4.7 PACE MW-7 07/28184 4A6 18.06 -13.60 67 - 6.8 ND<0.5 ND<0.5 ND<0.5 -- -- 4.6 PACE MW-7 12!09/94 4.46 18.76 -14.32 57 - - 6.1 0.5 ND<0.5 NNI --- -- 4.7 PACE MW-7 03AMS 4.46 17.40 -12.94 ND<50 •» -- 5.8 Nm.50 ND<0.50 ND<1.0 - --- 4.3 ATI MW-7 04/12/95 4.46 16.29 -11.83 ND<50 --- -- 4.6 ND<0.50 ND<0.50 ND<1.0 -- --- 7.6 AT1 MW-7 07120195 4.46 16.26 -11.80 ND<50 --- - 3.1 ND<0.50 ND<0.50 NA<1.0 --- -- 5.3 An MW-7 11/02195 4.46 17.10 -12.64 ND<50 --- - 3.4 ND<0.5 ND<0.5 ND<1.0 ND<5.0 --- 4.2 AT1 MW-7 01/16196 4.46 16.44 -11.98 ND<% 4.6 ND<0.50 ND<0.50 ND<1.0 ND<5.0 -- -- ATI MW-7 04/22196 4.46 14.27 -9.81 ND % -- - 2.0 ND<1 ND<t ND<7 ND<10 --- -- SPL MW-7 07/12196 4.46 14.67 -10.21 NO-% - - ND<0.5 ND<1 ND-1 ND-1 ND<10 --- 1.7 SPL MW-7 104/96 4.46 15.60 -11.14 ND<50 -- - ND<0.5 ND<1.0 ND<1.0 NO<1.0 ND<10 ••- 32 SPL MW-7 03111197 4.46 12.55 -8.09 -- --• --- -- --- --- -- _-_ -- - MW-7 05922197 4.46 13.19 -8,73 -- --- - -- --- --- .- MW-7 06106997 4.46 13.99 -9.53 - - -- - - - MW-7 09!22!97 4.46 14.06 -9.60 __ ___ - -„ ___ __ - - - - MW-7 01/07138 4.46 14.20 -9.74 ND<50 ••- - ND<0.5 ND<1.0 ND<7.0 ND<1.0 ND<10 - 6.3 SPL 29-Jan-98 PAGE 3