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Nature's Refuge EAW Record of Decision page 12 Response: The proposer completed an assessment of wetland functions for all wetlands within the proposed project site, using the full Minnesota Routine Assessment Method (MNRAM version 3.0). This included assessment of both hydrologic and water quality functions of the site's wetland resources. The MN RAM assessment was used to guide the project design team through the initial steps of developing the conservation development concept site plan. The MN RAM assessment is available for the Rice Creek Watershed District to review. Furthermore, the results of the MNRAM assessment will likely serve as an integral component of the WCA wetland permit application, and Exceptional Natural Resources Value (ENRV) wetland banking application, among influencing other project components and goals. • RCWD notes that there is an indication of some floodplain fill. The RCWD is concerned about how this will affect the hydrology of the adjacent wetlands in complex 7. Response: The City and project proposer share the understanding that minimizing the impact to the hydrology of the wetlands is a critical component to maintaining the integrity of the wetland complexes. Floodplain fill will be minimized in recognition of this project goal. • RCWD notes that no comparison of quantity and quality of runoff pre- and post - construction was constructed. Because the project site ultimately discharges to Marshan Lake which is an impaired waterbody under the MPCA 303(d) list, such an assessment needs to be conducted. Response: Site - specific data has been collected including infiltration parameters using a double -ring infiltrometer for existing and impacted portions of the property. In addition, surface water and groundwater data has been collected throughout 2006. This data is being used in the development of a hydrologic model of the project site. The proposer has met with the RCWD to discuss the model development and looks forward to continuing collaboration with the RCWD in finalizing the model to represent the existing and constructed environment. The model results will be an important component of the required RCWD permit process. • The Minnesota Pollution Control Agency (MPCA) notes that a Section 401 Water Quality Certification from the MPCA is needed for the issuance of a Section 404 Permit from the U. S. Army Corps of Engineers. The 401 Certification should be included in the list of permits and approvals in Item 8 of the EAW. Although the MPCA will likely waive its 401 authority, an application for the certification is still necessary. •