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;40o y -~o~~ Minnesota LocaU State/ Federal Application Form for Water/ Wetland Projects City of Roseville ~,~~ 3 ~ S 6~ 7/30/03 '~1' ~~ Page 1 of 2 Part I: Basic Application- Supplemental information ~ ~ ~~` ~;~~~ 2. Name, Type and Size of Public Waters or Wetlands Impacted: '`'s L~~74wr~ ~.. (See attached map for Wetland Types) ~~~~~f_ ,~~; Name (DNR ID) Size (acres) Location Project Foo rint (sf) Oasis Pond (205W) 8.5 Sec. 4 T29 R23 24,513.9 Bennett Lake (48W) 25.5 Sec. 11N T29 R23 8,266.64 Long Lake Pond (202W) 8.4 Sec. SN T29 R23 36,539.98 3. Project Locations: (see attached location map) 4. Type of Project: The City of Roseville is proposing to excavate silt from the vicinity of storm sewer outlets in various ponds within the City limits. This silt has been deposited at the inlets and outlets from both City and County winter maintenance activities. While the City has an aggressive street sweeping program, sand does wash into storm ponds creating deltas that block drainage, rob capacity and clog the wetland with volunteer vegetation. The work involved will take place during the winter months while the water bodies are frozen, allowing machinery to access the sites while minimizing the impacts to the shoreline. Short access roads-arid- ramps may need to be temporarily constructed to access the silt deltas at some locations. We propose to remove the silt, and reinforce the outlet structures with Rip Rap aprons for energy dissipation basins. 5. Project Purpose, Description and Dimensions: The excavated material is primarily silt runoff from urban areas that has been deposited in the vicinity of the storm sewer outlets following rainfall events. The City will be hiring an excavation Contractor to do this work. Once the annual projects are bid and awarded, we will provide supporting documentation to the DNR regarding the location of spoils disposal. We shall require that the Contractor dispose of material. in accordance with regulations from the Department of natural Resources and other agencies. Silt removal is planned for early winter (November 2003) on the three water bodies indicated in this application. It is our intent that this application will serve as a general permit for this type of routine maintenance work. Subsequent application updates will be made as water bodies are identified for maintenance on an annual basis. 6. Project Alternatives: Potential alternatives include 1. Do Nothing: this is unacceptable due to the detrimental effect the silt has on water quality, vegetation, shoreline stability, and the storage volume of the basins. 2. Create u~- stream detention basins to reduce suspended solids settling in these ponds: The City actively looks for ways to add water quality treatment capacity throughout the City. This is done either through regional pond improvements or redevelopment requirements. Each of these subwatersheds have proposed up- stream water quality improvements.