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• 0 r . <br /> h � <br /> TABLE 1 <br /> Groundwater Monitoring Data <br /> Former Beacon Station No 12419 <br /> 2350 Waterloo Road,Stockton, California <br /> ethyl- Depth to TOC GW <br /> Well TPH9 benzen toluene benzen xylenes MTBE DIPE ETBE TAME TBA methano ethanol EDC EDB GW Elevation Elevation <br /> Number Date (ug/L) (ug/L) (ug1L) (ug/L) (ug/L) (ug/Q.(ug/L) (ug1L) (ug/L) (ug/L) (ug/L) (ug1L) (ug {ug/L) (feet) (feet sea level)(feet sea level) Comments <br /> MW-5 03/31/98 75 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no no no no no 4846 2043 -2803 <br /> Aiw-5-1 <br /> screened 06110198 <60 <0 50 <0 50 <0 50 <0 50 <5 0 na no no no no na no no 4272 2229 <br /> interval 09/08/98 <50 12 091 <br /> <0 50 094 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 no no 4692 -2649 no odor 1 no sheen <br /> 48'-71' 11/12/98 2043 wellhead survey <br /> 12/30/98 110 067 <0 50 <0 50 <0 50 <5 0 no no no no no no no na 4545 -2502 no odor 1 no sheen <br /> 03/26/99 67 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <20 na no 41 26 2083 no odor I no sheen <br /> 06/02/99 <br /> e50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 71 <0 50 4061 -2018 no odor 1 no sheen <br /> 06/31/99 <50 <0 5o <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 16 -050 4549 -2506 no comment <br /> 12/09/99 140 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <50 <5 0 200 <0 50 4704 -2661 <br /> 02/21/00 140 <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 /> 05/18/00 <100 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 <1 0 12 <100 <10 no no 4071 -2028 n0 odor I no sheen <br /> 0912610o 64 <0 50 <0 50 <0 50 <0 50 <50 no no no no no no no no 4882 -2839 no odor 1 no sheen <br /> 12/20/00 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no na na no no no no no 4741 -2698 no odor!no sheen <br /> 03/27/01 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no no no no na no no no 4619 -2578 no odor/no sheen <br /> UW-6 03/31/98 110 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no na no na no 4836 2066 -2770 <br /> screened 06/10/98 79 <0 50 <0 50 <0 50 <0 5o <50 no na no no na no na no 4268 -2202 <br /> interval 09/08/98 <50 086 077 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 no no 4697 -2631 no odor 1 no sheen <br /> 48'-715' 11/12/98 2065 wellhead survey <br /> 12130/98 53 <0 50 <0 50 <0 50 <0 50 <5 0 na no no no no no no no 4557 -2492 no odor I no sheen <br /> 03!26!99 84 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 na no 41 25 -2060 no odor/no sheen <br /> 06/02199 59 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 <0 50 <0 50 4071 -2006 no odor 1 no sheen <br /> 08/31199 63 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 <0 50 <0 50 4557 -2492 no comment <br /> 12/09199 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 <0 50 <0 50 4729 -2664 <br /> 02/21/00 690 29 120 20 87 <0 50 <0 50 <0 50 <0 50 <50 <50 20 1 1 16 4569 -2504 no odor/no sheen <br /> 05/18/00 <50 <0 50 23 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <50 no no 4084 -2019 no odor I no sheen <br /> 09126/00 <50 <0 50 <0 50 <0 50 <0 50 no no no no no na no no no 4092 -2827 no odor/no sheen <br /> 12/20/00 <50 <0 50 <0 50 <0 50 <0 50 <5 0 no no no no no no no no 4761 -2696 no odor/no sheen <br /> 03127/01 <50 <0 50 066 <0 50 <0 50 <5 0 no no na no no no no no 4639 -2574 no odor I no sheen <br /> 419gmroa ids Page 3 of 6 HORIZON E"MONMENTAL INC <br /> 141941 <br /> r <br /> 1 <br />