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

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Synchro assignment diagram (Attachment 2 at the end of this response document); the PM peak hour intersection calculation for TH 10 and Sunfish Lake Boulevard (Attachment 3 at the end of this response document); future with project (mitigated) Synchro assignment diagram (Attachment 4 at the end of this response document); and the PM peak hour intersection calculation for TH 10 and Sunfish Lake Boulevard for this condition (Attachment 5 at the end of this response document). Comment #7. The Minnesota Department of Natural Resources (DNR) submitted the following set of comments: Comment 7.1: Since all options assume discharge to the (Mississippi) River in one Corridor location or another (ex. page 17-17), and since there are recommendations, as well as text and figure references, for potential stormwater and wetland mitigation projects within the Mississippi River Critical Area Corridor/WSR/MNRRA, the City of Ramsey should also include a permit for "Environmental Permit Review and Approval as applicable for projects within the Mississippi River Critical Area Corridor/Wild and Scenic River District" in Table 8.1. Response: The applicable City of Ramsey permit, as required by the City of Ramsey Comprehensive Plan (as amended February 26th, 2002) for placement of a stormwater outfall within the Mississippi River Critical Area Corridor, will be obtained before work on the outfall structure is initiated. Comment 7.2: On page 9-2, paragraph 4, in the list of nearby environmental resources, we suggest that the Mississippi River citation should also note that it is "designated a state Critical Area and Wild, Scenic and Recreational River". Response: The document has been changed to reflect the comment. Comment 7.3: The DNR strongly encourages the implementation of proposals mentioned to mitigate impacts associated with the stormwater outfall to the Mississippi River, including high use at multiple scales of on -site retention and infiltration into the project; minimization of scour, erosion and velocities; and directional boring, erosion control and native re -vegetation. The proposed stormwater outfall to the Mississippi River will likely require a Public Waters work permit. This discussion of response to impact mitigation for the outfall should also reference the mitigation to improve the water quality of runoff prior to discharge to the River. The DNR appreciates that proposed outlets for public waters wetland 2-670W (on -site) and Lake Itasca (off -site) will be above the ordinary high water levels and above the 100- year flood elevation for Lake Itasca. This will allow the natural storage of these basins to be utilized and permits for working in public waters will not be necessary for these two outlets. Response: The City is currently working with the County to determine the route and character of the ultimate River discharge. Once these items are determined, the City can begin to work in earnest with the regulatory agencies to define the protection needed. 34-8