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I I I I I I I I I I I I ! I I I I I I VI. I~O A~TION ALTERNATIVE ~edu 13 ne landfill expansion is not developed, the solid waste which would .ndftlled at the site must be disposed of by another means. The could be disposed of at other existing landfills or new landfills. ~ptn County and the other counties in the Metropolitan Area are 4reo under the Solid Waste Management Caw (M.S. 473.149-473.834 as ded} to prepare a county master plan containing an inventory of new d waste disposal sites and land disposal abatement proposals to ce the need for land disposal. The abatement proposal is to address at ~ast waste reduction, separation and resource recovery. The EIS will ~valluate existing landfills and proposed new landfills and various abate- men~ proposals as alternatives to the project. rTl, he [following is a sumary of the general types of information and tudies to be included in the EIS. GROUNDWATER [. IA description of the hydrogeologic setting of the site and surrou~J- Fm ling area including groundwater depths, flows, quality and users. ~. ~IEstimates of potent~,al leachate formation and transportation includ- ', ling vol~,es, timing and composition. ~3. iAmalysis of potentially affected aquifers including the extent and ~AIR imagnitude of the impact. Evaluation of potential changes in groundwater levels. Evaluation of potential human health impacts. rACE WATER [ 'Discussion of the potential effect of leachate on off-site surface iwaters including the magnitude of pollution and the sensitivity of ~the affected water bodies. Evaluation of the impact of alterations to drainage patterns and pro- .posed surface water management plans including the impact on the ~river bluff. EvaluatiOn of the potential impact on human health. Evaluation of the possible impact on biological communities in sur- ~face waters including Grass Lake, Minnesota River and Purgatory Creek. QUALITY Analysis of potential impacts from trucks and landfill equipment on air quality including dust and engine emissions. Discussion of landfill gas problems including methane migration and methane control and odors and odor controls.