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r I I I� I , TABLE 1 GROUNDWATER MONITORING DATA i Former Beacon Station No 12419 11 2350 Waterloo Road,Stockton,California 1 I I i � I ethyl Depth to TOC GW Well T?Hg benzene toluene benzene xylenes MTBE DIPE ETRE TAME TBA methanol ethanol DCA EDB GW Elevation ElevaGan Number Date (u 1L) (u L) (u 1L) (u L} u IL u !l) u 1L) u !L u !L) (u !L) u IL) (u IL) (u !L u !L) (feet) (feet sea level feet sea level) Comments VW 2 03/26/99 ns ns ns ns ns nsl nsns ns ns ns ns ns ns dry nm ' nm dry screened 06102/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry , n Interval 08!31!99 ns ns ns ns ns ns" nsu ns ns ns ns ns ns ns dry nm dry I 15-25 12/09199 ns ns ns ns ns ns ns nil I ns ns ns ns ns dry nm dry I 02121!00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry 05118100 ns ns ns ns ns ns, ns ns ns ns ns ns ns ns dry nm dry 09126100 ns ns ns ns ns ns', ns ns ns ns ns ns ns ns dry nm dry 12121100 ns ns ns ns ns ns' ns ns ns ns ns ns ns ns dry nm dry 03127/01 ns ns ns as ns ns' ns ns ns ns ns ns ns ns dry nm dry 06!26101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry 09105101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry 11130!01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry 102 021 ns ns ns ns ns ns, ns ns ns ns ns ns ns ns dry nm dry 05!16102 ns ns ns ns ns ns, AS ns ns ns ns ns ns ns dry nm dry + 12/04/02 ns ns ns ns ns nsI ns ns ns ns ns ns ns ns dry nm dry 02117103 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry 06103/03 ns ns ns ns ns ns ns nsi ns ns ns ns ns ns dry nm dry s 09/18/03 ns ns ns ns ns ns, ns ns ns ns ns ns ns ns dry nm dry 11124!03 ns ns ns ns ns ns' ns nII ns ns ns ns ns ns dry nm dry I 02123104 ns ns ns nsM nsI ns ns ns ns ns ns AS ns dry nm dry 06/07/04 ns ns ns ns ns ns ns ns ns ns ns ns AS ns dry nm dry 09107104 ns ns ns ns ns ns' ns ns ns ns ns ns AS ns dry nm dry 12110!04 ns ns ns ns ns ns, ns ns ns ns ns ns ns ns dry nm dry I i I4 II 03108105 ns ns ns ns ns III ns ns I ns ns ns ns ns ns dry nm dry 05124105 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry AS 1 02121!00 80000 7600 16000 1600 9100 34 <2,0 <2.0 <2 0 <20 380 12000 180 250 4589 nm nm slight odorino sheen J screened 05118100 23000 2300 4800 480 2900 <10 <10 <16 <10 <100 <1000 <100 na na 4109 nm no odorino sheen it I Interval 09126100 54000 2600 5300 590 3200 <5 0 1 na na na na na na na 49 13 nm slight odor 1 no sheen I 64-69 12/21/00 52000 5000 10000 1200 6000 <500 na nay na na na na na na 47 79 nm odorino sheen 03/27/01 140000 16000 34000 3300 18000 <500 na na na na na na na na 4665 nm odorino sheen 06!26101 140000 14000 34000 3700 18000 <1 0 .110 <1'0 <1 0 <10 -1100 -1100 83 140 49 79 nm odor/no sheen 09!05101 210000 77000 39000 4600 25000 <500 na na na na na na na na 5441 nm cdodnosheen 11/30/01 150000 12000 32000 4000 19000 <2000 na na na na na na na na 54 70 nm odor/no sheen 02!27102 200000 11000 38000 3600 19000 -12000 na rna na na na na na na 5006 nm Slight odorino sheen 05!16102 120000 11000 23000 2200 11000 <100 <100 <100 <100 <1000 <10000 <1000 <100 <100 51 11 2242 28 69 slight odol sheen 09/13102 160000 12000 44000 5100 22000 <200 na na na na na na na na 59 28 3686 oda Ino sheen 12/04/02 110000 8300 25000 2200 12000 <500 na na na na na na na na 57 50 3508 odor Ino sheen 02117/03 170000 18000 33000 3100 15000 <200 na na na na na na na na 54 97 3255 odor/no sheen 06103103 190000 20000 38000 4200 19000 <20 <21) <20 <20 <200 <2000 <200 82 93 5371 31 29 odor Ino sheen i 09/18/03 ns ns ns ns ns ns; ns ns ns ns ns ns ns ns nm I nm not sampled 11124103 ns ns ns ns ns ns, ns ns ns ns ns ns ns ns 5885 3643 not sampled 02!23104 200000 13000 29000 3500 18000 <50 <50 <50 <50 <500 <5000 e500 <50 <50 $536 3294 odor I no sheen 05/07/04 ns ns ns ns ns nsl ns ns ns ns ns ns ns ns 5563 3321 not sampled 09!07!04 ns ns ns ns ns na ns nsI ns ns ns ns ns ns fit 11 3969 not sampled 12110104 ns ns ns ns ns ns ns nsI ns ns ns ns ns ns 5979 3737 not sampled 03109!05 130000 16000 26000 3500 16000 <50 <50 <56 <50 -1500 -15000 -1500 150 <50 5621 3379 odor lnosheen 05124105 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5128 -2886 not sampled 1 C iE t I I 419gmr05 x pry I Pag 3 HORIZON ENVIRON IIFG i I I