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!�.I 1r 1v•✓U rIC.7 DMVUfcr1U W1 - r.4 _ } 1)i` ill e 3. Hydrglogical review of the proposed quarry operation: Stormwater management plans will direct and manage water from the proposed quarry operation through a series of detention ponds that would be created. These would occur within the existing subdrainage basins through which the water currently flows. Diversion of surface waters through these detention basins and a slightly reduced groundwater infiltration component will result with the management of surface waters in association with the mining. Because most water will be directed to the same !' subdrainage basins (tributary areas) where it currently flows and because there is a long distance between the detention basins and the ultimate discharge location for this water, our preliminary analysis suggests there will be ample time for infiltration and hydrologic attenuation which will result in no significant change in the groundwater or surface water discharge from the proposed quarry operation !` property into any of the adjacent parcels, including to Camrock Park. Because no indicators of the groundwater maintained wetlands are present within • the Camrock Park location investigated no changes to wetlands dependent on groundwater are likely to occur. In addition, based on preliminary analysis we anticipate no impacts on local wells or groundwater resources. The site closure plan and ultimate use for agricultural purposes will likely result in very similar conditions to what currently exist being realized after mining activities and site reclamation occurs. There are ways to benefit wildlife habitat opportunities in association with the mining reclamation and closure process. Restoration of the mined areas after mining to prairie vegetation and other deep rooted perennial native vegetation would greatly improve the habitat conditions in the Howard Lien property and contribute wildlife habitat benefits to adjacent properties. In summary, based on this assessment, with proper reclamation, planning, and daily site maintenance (including noise abatement, dust abatement and sediment control) we anticipate no major wildlife impacts and no major hydrologic impacts to ground or surface waters in association with the proposed Howard Lien quarry project. Should you have any questions on this matter, or these opinions please do call on us at you earliest possible convenience. Very truly yours, !ii Steven 1. Apfelbaum 'I Research and Consulting Ecologist ha5:95339aOi795 Page 3 of 3 Roethe/Stan Lien Quarry Letter Report ii •I�