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I <br />! <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> <br /> I <br /> I <br />I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> <br />-6- <br /> <br /> Groundwater Monitorin~ <br /> <br /> The question was raised at the hearing as to whether ground- <br />water could adequately be monitored by routine methods at the new <br />site considering that it is adjacent to the existing Oak Grove <br />landfill. The comment was made that the existing landfill has no <br />liner, that leachate is inevitable from that landfill, and that it <br />will be impossible to differentiate between groundwater affected <br />by the existing landfill and that affected by a failure resulting <br />in a leachate release at the new site. <br /> <br /> Available information indicates the direction of groundwater <br />flow beneath the existing landfill is to the south and groundwater <br />flow beneath the new proposed site is also to the south. <br /> <br />Therefore, the area of concern would be the point at which the new <br />site is located near the existing landfill, where groundwater <br />flowing beneath the two sites would come together. This is to the <br />east and south of the existing landfill. Groundwater monitoring <br />has been ongoing at the existing landfill since 1972, and wells <br />were installed on the east site of the existing landfill in 1979. <br />The groundwater monitoring results indicate the wells to the east <br /> <br />of the exsiting landfill have not been affected by leachate. If <br /> <br />the site is proposed for development, extensive groundwater <br /> <br />monitoring would be required at the new site to define background <br />water quality conditions, directions of groundwater flow, and the <br />effects of the existing landfill on groundwater quality where flow <br />from the two sites might come together. Therefore, available <br /> <br /> <br />