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2018-02-28 CC Packet
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2018-02-28 CC Packet
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(' Stantuc <br /> CITY OFCENTERV|LLE -2D1QLOCAL WATER PLAN <br /> WATER RESOURCE MANAGEMENT PLAN <br /> TABLE Q.1 -TPREMOVAL FACTORS FOR PROPERLY DESIGNED ByNPa <br /> Infiltration Infiltration Feature 1.00 <br /> Water Reuse Irrigation 1.00 <br /> Biofiltration Underdrain 0.65 <br /> Filtration Sand or Rock Filter 0.50 <br /> Stormwater Shallow Wetland 0.40 <br /> Wetlands Pond/Wetland 0.55 <br /> Stormwater Wet Pond 0.50 <br /> Ponds Multiple Ponds 0.60 <br /> Infiltration may be infeasible, due to potential contamination (i.e. contaminated soils or potential <br /> otormvvaterhob;poto\. physical limitations /i.e. low permeability soils, bedrock close tothe <br /> infiltration area, seasonal high water tables, or karst areas), or land use limitations /i.e. nearby <br /> vve||o or utility locations). In these oaoeo. alternative BMPo are required, as listed inTable 0.1 <br /> These BMPo are stated in order of RCVVD'o preferenoe, due toTP removal efficiencies. <br /> The RCWD requires protective easements for all stormwater detention facilities and conveyance <br /> structures. These easements are intended to protect floodplain and otormvvaterotonage areas <br /> from alterations that may interfere with storage and/or flow ofsurface water, particularly during <br /> flood conditions. They also serve as formal notice to the property owners and future property <br /> owners that the land within the easements may be inundated atany future date. <br /> Maintenance of stormwater facilities will be coordinated with the RCWD. Currently, inspections <br /> are performed in the spring and fall, with maintenance done as needed. Maintenance of the <br /> current system will continue to be a priority for the City. As new development occurs, developers <br /> will "turn over" these new otornnvvatertsoi|ideo to the City Public Works Departnnent, including <br /> trunk and lateral storm sewers, catch basins, stormwater BMPs, and ponds and outlet <br /> structures. With such a relatively new storm sewer system, there are currently few maintenance <br /> tasks other than street sweeping, which is done a minimum of twice per year. However, the City <br /> plans to formulate a Maintenance Plan Budget within five years. <br /> As an MS4 oih/. Centerville is ultimately responsible for the monitoring and maintenance of <br /> water bodies and other best management practices or structural stormwater conveyance <br /> oyotenno as defined in its NPDEE) permit. It shall be oih/ policy that the City is directly <br /> responsibility for the monitoring and maintenance of elements of the City's MS4 system when <br /> those elements take drainage from public property or the public right-of-way. Where elements of <br /> the oib/'o MS4oyotem are constructed on, and take drainage from, solely private propertv, oih/ <br /> policy shall bethat the private property owner is responsible for monitoring and maintenance of <br /> 0.21 <br />
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