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Table 1 <br /> Groundwater Monitoring Data <br /> Former Beacon Station No 419 <br /> 2350 Waterloo Road,Stockton,California <br /> Well Date i TPHg Benzene Toluene E-benzene Xylenes Depth to TOC GW <br /> Number ug/L ug/L uglL ugfL ug/L GW Elevation Elevation Comments <br /> WW-1 03/31/98 65 <0 50 <0 50 <0 50 <0 50 4804 21 11 -2693 <br /> (screerndM 06/10/98 <50 <0 50 <0 50 <0 50 <0 50 4250 -2139 <br /> 'uterval09/08/98 230 8 1 0 58 <0 50 0 72 4695 -25 84 no odor/no sheen <br /> off-g5j I ' 11/12/98 2036 Wellhead Survey Data <br /> 12/30/98 87 <0 50 <0 50 <0 50 <0 50 4533 -24 97 no odor/no sheen <br /> Z - 03/26/99 55 <0 50 <0 50 <0 50 <0 50 4 IJA -2080 no odor/no sheen <br /> 06/02!99 180 74 <0 50 051 <0 50 4064 -2028 no odor/no sheen <br /> MW 2„ 03/31/98 94 <0 50 <0 50 <0 50 <0 50 21.35 -2691 <br /> (scioernd 06/10/98 <50 <0 50 <0 50 <0 50 <0 50 42 67 -2132 <br /> 'interval= 09/08/98 98 <0 50 <0 50 <0 50 <0 50 4731 -2596 no odor/no sheen <br /> 11/12/98 <br /> 2059 Wellhead Survey Data <br /> 12/30/98 84 <0 50 <0 50 <0 50 <0 50 4555 -2496 no odor 1 no sheen <br /> V 03/26/99 78 <0 50 <0 50 <0 50 <2 0 41 25 -2066 no odor/no sheen <br /> 06/02/99 I20 <0 50 <0 50 <0 50 <0 50 4075 -20 16 no odor/no sheen <br /> -IMW-3 03/31/98 780 220 2 0 3 2 70 4827 21.38 -2689 <br /> (samedf 06/10/98 220 2 6 18 0 6 18 4267 -2129 <br /> Interval a 09/08/98 3,800 420 180 260 280 4721 -2583 Petroleum odor/no sheen <br /> 65'-859 11/12/98 2065 Wellhead Survey Data <br /> 12/30/98 620 18 099 17 14 4556 -2491 slight odor/no sheen <br /> ' 03/26/99 63 <0 50 <0 50 <0 50 <0 50 4126 -2061 slrght odor/no sheen <br /> 06/02/99 74 1 7 13 23 078 4076 -2011 slight odor/no sheen <br /> MW-4 - 03/31/98 75 <0 50 <0 50 <0 50 <0 50 4792 2000 -2792 <br /> (&erecned 06/10/98 58 <0 50 <0 50 <0 50 <0 50 4221 -2221 <br /> interval= 09/08/98 50 13 14 <0 50 2 4664 -2664 no odor/no sheen <br /> '48=709 11/12/98 2000 Wellhead Survey Data <br /> 12/30/98 68 14 087 <0 50 1 1 45 00 -2500 no odor/no sheen <br /> 03/26/99 74 <0 50 f0 50 <0 50 <0 50 4075 -2075 no odor/no sheen <br /> 06/02/99 <50 <0 50 ;k0 50 <0 50 <0 50 4019 -20 19 no odor/no sheen <br /> MW-5 03/31/98 75 <0 50 <0 50 <0 50 <0 50 4846 2043 -2803 <br /> (screened 06/10/98 <50 <0 50 <0 50 <0 50 <0 50 42 72 -2229 <br /> interval- 09/08/98 <50 1 2 091 <0 50 094 4692 -2649 no odor/no sheen <br /> 48'-719 11/12/98 20 43 Wellhead Survey Data <br /> - 12/30/98 110 067 <0 50 <0 50 <0 50 4545 -25 02 no odor/no sheen <br /> 03/26/99 67 <0 50 <0 50 <0 50 <0 50 4126 -2083 no odor/no sheen <br /> 06/02/99 <50 <0 50 <0 50 <0 50 <0 50 4061 -20 18 no odor/no sheen <br /> 99QMTable 01 Page 1 of 3 HORIZON ENVIRONMENTAL INC. <br /> I <br />