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1 i <br /> it <br /> TABLE 1 <br /> GROUNDWATER MONiTORING'DATA <br /> Former Beacon Station No 12419 <br /> I!235 Wat' rloo Road, Stockton,California <br /> 1 <br /> 1 ethyl �� Depth to TOC GW <br /> Well TPH9 benzene toluene benzene xylenes MTBEI,RIPE ETRE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Date (ug/L) (ug/L) (ug/L) (ug/L) (ug1L) (uglL)i (ug)L) (ug/L) (ug1L) (ug1L) (ug/L) (uglL) (ug/L) (ug1L) (feet) (feet sea level) (feet sea level) Comments <br /> 1 MW 2 03/31/98 94 <0 50 <0 50 <0 50 <0 50 <5 0 nana na na na na na na 4826 2135 2691 <br /> screened 06/lo/9e <50 <0 50 '050 <0 50 <0 50 <5 0 {I na na na na na na na na 4267 2132 <br /> interval 09/08/98 98 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 24 <50 <5 0 na na 4731 2596 no odor 1 no sheen <br /> 65 85 11112,x98 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 2059 wellhead survey <br /> 12/30/98 84 <0 50 <0 50 <0 50 <0 50 <50 jl na na na na na na na na 4555 2496 no odor 1 no sheen <br /> 03/26/99 78 <0 50 <0 50 <0 50 <2 0 <0 50 l <0 50 <0 50 <0 50 <50 40 <20 na na 41 25 2066 no odor 1 no sheen <br /> 06102/99 120 <0 50 <0 50 <0 50 <0 50 <0 50{, <0 50 <0 50I <0 50 97 <50 <5 0 160 <0 50 4075 2016 no odor 1 no sheen <br /> 08/31/99 79 <0 50 <0 50 <0 50 <0 50 <0 50 E <p SOI <0 501 <0 50 74 <50 <5 0 65 <0 50 4572 2513 no comment <br /> 12109/99 <50 4 50 <0 50 <0 50 <0 50 15 <0 50 4 501 <0 50 <5 0 <50 <5 0 42 <0 50 4720 2661 <br /> 02121/00 <50 <0 50 <0 50 <0 50 -050 1k <0 50 <D 501 <0 50 <50 <50 <5 0 30 <0 50 4552 2493 no odor 1 no sheen <br /> 05/18/00 67 <0 50 <0 50 <0 50 <0 50 <0 50 l <0 50 <0 50 <0 50 <5 0 <50 <50 na na 4076 2017 no odor(no sheen <br /> 09!26100 <50 <0 50 <0 50 <0 50 <0 50 <5 0 1 na na na na na na na na 4913 2854 no odor!no sheen <br /> l 12120/00 <50 <0 50 <0 50 <0 50 <0 50 <5 0 ,I na na na na na na na na 4735 2676 no odor!no sheen <br /> 03127/01 <50 <0 50 <0 50 <0 50 <0 50 14 , na I na na na na na na na 4631 2572 no odor 1 no sheen <br /> 06/26/01 <50 4 50 <0 50 <0 50 <0 50 25 <0 50 <0 50 <0 50 <5 0 <50 <5 0 60 <0 50 4902 2843 no odor 1 no sheen <br /> I 09/05101 230 <0 50 053 <0 50 <0 50 <5 0 na i na na na na na na na 5425 3366 no odor/no sheen <br /> 11130101 64 <0 50 <0 50 <0 50 <0 50 <5 0 na I na na na na na na na 5396 3337 no odor 1 no sheen <br /> 02/27/02 110 -050 <0 50 <0 50 <0 Sp c5 6 ail na na na na na na na na 5065 3006 no odor!no sheen <br /> 05/16/02 120 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 110 <0 50 5091 2214 2877 no odor 1 no sheen <br /> 1 09/12/02 160 14 063 <0 50 <0 50 <5 0 6 na na na na na na na na 5913 3699 no odor 1 no sheen <br /> t2104102 79 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 5713 3499 no odor 1 no sheen <br /> 02/17/03 100 <0 50 <0 50 4050 <0 50 <0 50 na na na na na na na na 5401 31 87 no odor 1 no sheen <br /> 06/03/03 100 <0 50 <0 50 <0 50 4 50 1 7 <0 50 4 50 <0 50 <5 0 <50 <50 75 <0 50 5372 31 58 no odor 1 no sheen <br /> 09/18/03 ns ns ns ns ns ns I ns ns ns ns ns ns ns ns nm nm not sampled <br /> 11/24/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns 5843 3629 not sampled <br /> 02/23/04 <50 24 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 38 <0 50 5487 3273 no odor 1 no sheen <br /> 06107/04 ns ns ns ns AS ns I ns i ns AS ns ns ns ns ns 5535 3321 not sampled <br /> 09/07/04 ns ns ns ns ns ns 1r ns j ns ns ns ns ns ns ns 6191 3977 not sampled <br /> 12110104 ns ns ns ns ns ns 1 ns I ns ns ns ns ns ns ns 5948 3734 not sampled <br /> �+ I <br /> l <br /> I' <br /> j I <br /> h <br /> 1 <br /> I ' <br /> 1 j <br /> � I <br /> I , <br /> 4194wO4 xis ' <br /> ProWl.No 1410 Page HORIZON ENVIRRONM*C <br /> i {il <br /> l i i <br />