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2018-01-24 CC Packet
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2018-01-24 CC Packet
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Stantec <br /> CITY OF CENTERVILLE -2018 LOCAL WATER PLAN <br /> WATER RESOURCE MANAGEMENT PLAN <br /> small area in the northwestern portion of the City drains directly to Lino Lakes. The Rice Creek <br /> Watershed District identifies the intercommunity flows from Centerville to Lino Lakes, via <br /> Clearwater Creek (Anoka-Washington Judicial Ditch 3) as: <br /> • 2-year, 24-hour rainfall peak flow: 196 cfs <br /> • 10-year, 24-hour rainfall peak flow: 339 cfs <br /> • 100-year, 24-hour rainfall peak flow: 573 cfs <br /> • 100-year, 10-day snowmelt peak flow: 433 cfs <br /> Because of the large storage volume available in the two lakes, peak flows entering from the <br /> City will be greatly attenuated prior to discharge from Peltier Lake. As stated earlier in this <br /> chapter, the City requires that peak flow rates from the 2-, 10-, and 100-year storm events be <br /> maintained at or below existing conditions. The RCWD rules require the infiltration and/or <br /> retention of the runoff volume as described in Section 6.1. The combination of these factors <br /> leads to a net reduction below existing conditions for discharge leaving the City and entering <br /> Lino Lakes. <br /> 6.8 EROSION AND SEDIMENT CONTROL <br /> Recognizing that erosion and sediment control can best be administered on a local level, the <br /> Centerville City Council discussed methods and policies that can be implemented to control <br /> erosion from new construction sites. In the past, this responsibility was delegated almost fully to <br /> the Rice Creek Watershed District. However, due to the number of construction projects the <br /> RCWD administers during a given construction season, it is difficult for the watershed district to <br /> inspect these projects. <br /> The erosion and sediment control criteria for new developments that resulted from these <br /> discussions with the City have been consolidated into an Erosion and Sediment Control Policy <br /> for New Developments. The policy adopts the procedures and recommendations of the <br /> Minnesota Pollution Control Agency's Protecting Water Quality in Urban Areas: Best <br /> Management Practices for Minnesota. City Code Chapter 157 addressing Erosion Control is <br /> provided in the appendix. <br /> To prevent soil erosion into surface water systems, RCWD requires a District permit where soil <br /> disturbance or removal of vegetative cover affects one acre or more of land, or where soil <br /> disturbance/removal exceeds 10,000 square feet or more of land if the disturbed area is greater <br /> than 300 feet or more. Erosion and sediment control plans must: 1) address erosion and <br /> sediment issues during and after project completion, 2) be consistent with the MPCA's <br /> document"Protecting Water Quality in Urban Areas," 3) minimize the removal of vegetation, and <br /> 4) must protect facilities used for post-construction stormwater infiltration. The RCWD has <br /> encouraged the City to participate in the District's Water Quality BMP Cost-Share Program. This <br /> is a dedicated cost-share grant program to assist property owners with the implementation of <br /> Best Management Practices (BMPs) aimed at improving the quality of surface waters within the <br /> 6.24 <br /> 62 <br />
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