Agenda - Council - 02/26/2019 - Laserfiche WebLink

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year storms for both existing and proposed conditions. Agencies which will need to grant approval are listed on pages 8-1 and 8-2 of the AUAR. This list should be amended to include the neighboring property owner in drainage area 10 for the wetland mitigation of the bordering wetland (Wetland D - DNR Protected Water 2-670W). Figure 12-6 shows Anoka County extending Ramsey Blvd. southward into the (Mississippi Regional) park. The City of Ramsey suspended construction on the connection to TH 10 -Ramsey Blvd. for the Rivenwick development in the southeastern quadrant to TH 10 - Ramsey Blvd. until Mn/DOT finalizes plans for the intersection. Anoka County, or the Rivenwick developer, must provide an area for a storm drainage pond to handle the increased run-off from this intersection due to added lanes. Page 12-7 of the AUAR summarizes the wetland mitigation. Wetlands must be mitigated at 1 to 1, and Public Value Credits at 2 to 1. In drainage area 10, there seems to be a discrepancy in the mitigation rate. A Mn/DOT contact is given. Response: The final route for runoff from the RTC site has not yet been determined. Currently, as described in Item 17, a very small amount of runoff from the site discharges into the Right of Way and eventually infiltrates. Under the preferred drainage route, increased runoff from the site will pass through the Mn/DOT ROW and proceed southerly along a route currently owned by the County. The new Appendix J describes the impact of this discharge and the assumptions used in evaluating it, which include use for drainage from the future upgrade of TH 10. A Mn/DOT permit will be sought once the final route is established. The Rivenwick development currently provides its own drainage. Its relationship to the ultimate drainage plan developed for the RTC site remains to be determined. However, the City, County and Mn/DOT will all be involved in this final determination once the drainage route is finalized. During preparation of the wetland replacement plan, the property owner(s) abutting drainage area 10 will be contacted to determine their willingness to convey easements to the City for the wetland restoration and buffer establishment. It is also assumed that any work within this wetland will also be reviewed for DNR Protected Waters Permit requirements as well. The PVC credits estimated for drainage area 10 is 3.79 acres for wetland restoration and 1.80 acres for wetland buffer establishment. This would provide a total of 5.59 acres of PVC for drainage area 10. This assumes an approximately 50-foot buffer around the entire wetland. The exact PVC credits for restoring the existing wetland and for buffer establishment within drainage area 10, will be not be determined until a final determination is made as to wetland replacement requirements for the entire Ramsey Station project. Table 12.3 was changed to reflect the proper numbers. Comment 6.3: Any work on, or affecting Mn/DOT Right of Way will require a permit, including access, drainage, or other impacts. A Mn/DOT permit contact is given. Response: Table 8.1 changed to reflect the need for a permit for any work within a Mn/DOT Right of Way. 34-6