1997-11-24 - CC Packet - (Admin.)

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Mr. Dave Nyberg -3- May 13, 1997 Seellor (�. Administrative Improvements. The city should compile an "Administrative Improvements Plan" (AIP) to identify future administrative efforts (i.e., updates to existing / T or Implementation of new ordinances, adoption of a Wetland Protection Plan, establishment J of a stormwater utility, etc.). 7.0 Capital Improvements. The city plan identifies several areas where untreated stormwater discharges to the creek or into Centerville Lake (La Motte ditch). The city should identify 7 these areas within the capital improvements section as areas for retrofit water quality treatment. The RCWD has a cost -share program available to facilitate such projects. SS Individual Sewage Treatment Systems (ISTS). While the city plans to soon be as+ T O entirely within the metropolitan urban service area, there are still areas of the city served by J ISTS. The 'r' j' should inch de Sn its mutzgement plan an inspo'Ciion schedaie for rcgularly visiting ISTS sites for determining if problematic sewage treatment conditions exist. This should be continued until all sites are abandoned. S• 1 Erosion Control. The city's plan should include a statement adopting the MPCA's "Best Management Practices handbook, Protecting Water Quality in Urban Areas. Also, a process for notifying the MPCA of grading activities affecting areas over 5 acres, as required for NPDES permitting, should be provided. The RCWD would also encourage the city to participate in the District's streambed and bank stabilization (SBBS) program. The RCWD is promoting erosion control projects completed by residents along Clearwater Creek by ffering a cost -share to mitigate the expense of erosion control/bank stabilization profiles. Additional input by the city will make this A program even more attractive. Ah ibi4 7 Mapping. A floodplain map should be included in the appendix for reference by developers and city staff. Sources of information should include the city's revised floodplain $zelo� 2-10 (FEMA) map for Clearwater Creek and Centerville and Peltier Lake, as well as information relating to the stormwater management designs for the recent developments within the city. This latter information is available from the RCWD District Engineer. Fahi4a S A map showing those areas of the city which currently meet RCWD requirements for water quality discharges should also be included in the plan. The limits of RCWD- approved r ear prnjects Can be obtained frOM the Office of lie RC District Engineer. 4&bil ; A citywide map showing the locations of all proposed CIPs should also be included. Fxlub� A final map inclusion showing the location of MDNR protected waters and wetlands, as well as any information shown on the National Wetland Inventory or mosquito control maps, SccT�ons 1_� would be very helpful for determining if wetland management issues might be of concern for s 4? developers and city /watershed staff when reviewing proposed developments. Hydrologic Modeling. The plan should include information relative to floodplain elevations in ponding areas and along Clearwater Creek. 7 The city may wish to include in its stormwater modeling a completely routed stormwater system encompassing the entire city. Special attention could be paid to as yet undeveloped Portions of the city to determine what levels of rate control and water quality provisions will be required for new developments. /