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410 stormwater lift stations will only be reviewed if <br /> complete documentation of no other reasonable option is <br /> provided. Stormwater lift stations will be approved on <br /> a case-by-case basis . <br /> 5 . 9 Swales - Swales shall be designed to accommodate the <br /> 10-year storm runoff within the proposed banks . <br /> 411 5 . 10 Ditches - Proposed ditches shall accommodate the 100- <br /> year runoff within the banks or a designated easement . <br /> 5 . 11 Perimeter Drain Collection - All residential <br /> development regulated by this Ordinance shall indicate <br /> on their plans an appropriately sized, common <br /> collection swale, ditch or subsurface pipe structure <br /> that provides a positive discharge, collects and <br /> effectively conveys perimeter drain discharge to an <br /> appropriate offsite outlet . <br /> 6 . 0 Emergency Access Easement Requirements <br /> Emergency Access Easements shall be provided to Mooresville as <br /> follows : <br /> 6 . 1 Detention Structures <br /> Detention structures serving drainage basins greater than <br /> ten thousand (10 , 000) sq. ft . or receiving runoff from off- <br /> site or being dedicated to the Town shall have an emergency <br /> access easement around the 100-year flood elevation. This <br /> emergency access easement shall include all release control <br /> devices . The minimum emergency access easement requirements <br /> for detention structures shall be designated in the <br /> Mooresville Stormwater Design Manual . <br /> 6 .2 Conveyance Systems <br /> An emergency access easement shall be provided for all <br /> conveyance systems that will be accepted by the Town and/or <br /> be located adjacent to public or private roads or ways or <br /> lead to public conveyance systems located adjacent to public <br /> or private roads or ways, maintained by a homeowners <br /> association or receive off-site runoff . The minimum <br /> emergency access easement requirements for conveyance <br /> systems shall be designated in the Mooresville Stormwater <br /> Design Manual. <br /> The owner of the property shall be responsible for maintenance of <br /> the property' s drainage facilities . The granting of an emergency <br /> MOORESVILLE STORMWATER MANAGEMENT ORDINANCE <br /> 20 <br />