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i <br /> TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> Former Beacon Station No 12419 <br /> 2350 Waterloo Road,Stockton,Caltfomta <br /> ethyl Depth to TOC GW <br /> Well TPH9 benzene toluene benzene xylenes MTBE D1PE ETBE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Date u R ug/L)( (u-IL) u 1! (U91L) u R u IL u 1L (uWL) (ug/t u 11 (u/L u !L (u/L feet feet sea level feet sea level Comments <br /> MIN 5 03131M 75 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no no na na no 4846 2043 2803 <br /> screened 06/10198 <50 <0 50 <0 50 <0 50 <0 50 <5 0 na no no no no na no no 4272 2229 <br /> interval 09108198 <50 1 2 091 <0 50 094 <0,50 <0 50 <0 50 <0 50 <5 0 <50 <50 na no 4692 2649 no odor 1 no sheen <br /> 48 71 11/12198 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 2043 wellhead survey <br /> 17130198 110 061 <0 50 <0 50 <0 50 <50 no no no no no no no no 4545 2502 no odor 1 no sheen <br /> 03126199 67 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <20 no no 4126 2083 no odor f no sheen <br /> 06102199 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <5 0 71 <0 50 4061 2018 no odor 1 no sheen <br /> 08131199 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <50 16 <0 50 4549 2506 no comment <br /> 12109199 140 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <50 200 <0 50 4704 2661 <br /> 02/21100 140 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 190 <0 50 4547 2504 no odor 1 no sheen <br /> 05/18100 <100 <1 0 <1 0 <1 0 <10 <10 <10 <10 <1 0 12 <100 <10 no no 4071 2028 no odor 1 no sheen <br /> 09/26100 64 <0 50 <0 50 <0 50 <0 50 <50 na no na no no no no no 4882 2839 no odor 1 no sheen <br /> 12/20100 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no no no no na 4741 2698 no odor 1 no sheen <br /> 03/27/01 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no na no no no 46 19 2576 no odor 1 no sheen <br /> 06/26/01 <50 <0 50 <0 5D <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 16 <0 50 4876 2833 no odor 1 no sheen <br /> 09105101 <50 <0 50 <0 50 <0 50 <0 50 <50 no no no na no no no na 5379 3336 no odor I no sheen <br /> 11/30/01 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no no no no no no no no 5398 3345 no odor I no sheen <br /> 02!27!02 <50 <0 50 062 <0 50 <0 50 <5 0 no no no no no no no no 5052 3009 no odor 1 no sheen <br /> 05116/02 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 14 <0 50 5062 2199 2863 no odor 1 no sheen <br /> 09/12/02 <50 <0 50 <0 50 <0 50 <0 50 <50 no no no no na no no na 5857 3658 no odor 1 no sheen <br /> 12104/02 <50 <0 50 <0 50 <0 50 <0 50 <50 n8 no no no no no no no 5711 3512 no odor 1 no sheen <br /> 02117!03 57 <0 50 <0 50 <0 50 <0 50 <0 50 no no no no na no na na 5403 3204 no odor 1 no sheen <br /> 06102/03 <50 <0 50 <0 50 <0 50 <0 50 <0 50 4050 <0 50 <0 50 <50 <50 <50 30 <0 50 5317 31 18 no odor 1 no sheen <br /> 09118/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 11/24/03 ns ns ns ns ns ns ns ns n$ ns ns ns ns ns 5833 3634 not sampled <br /> 02123104 <50 <0 50 <0 50 <0 50 4050 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 22 <0 50 5484 3285 no odor I no sheen <br /> 06107/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5504 33 05 not sampled <br /> 09107/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 6153 3954 not sampled <br /> 12/10/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5930 3731 not sampled <br /> 03MB105 <50 '050 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <50 <0 50 <0 50 5574 3375 no odor I no sheen <br /> 05124!05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5085 2886 not sampled <br /> 08/31/05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5583 3384 not sampled <br /> r <br /> 4lagmrn5 PIS 13 HORIZON ENVIRO AL Inc <br /> Prolecl No� <br />