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<br />For all projects creating more than one acre of impervious surface, ponding shall be <br />required. At a minimum all pond design specifications shall conform to the city's <br />Engineering Design Standards and the current requirements found in the NPDES <br />construction permit. <br /> <br />(e) Regional ponding. <br /> <br />If the city determines the site is not suitable for on-site ponding, off- ite storm water <br />management and associated fees may be established, provided tha . sions are made to <br />manage storm water by an off-site facility, and provided that e fo' owing conditions <br />for the off-site facility are met: <br /> <br />(1) <br />solids, sh <br />waivers from <br />that the facility Ii <br />original design capa <br /> <br /> <br />(1) The facility is in place or the city has knowledge 0 <br /> <br />(2) The facility is designed and adequately sized <br />that at least meets the ordinance standards <br /> <br />(3) The city is satisfied that the facili <br />term operation and maintenance. <br /> <br />(I) Accepted alternative storm water treatm <br /> <br />Alternative storm water <br />basins, may be install <br /> <br />rain gardens and infiltration <br />d by the city. <br /> <br />(g) <br /> <br />ed by the owner in proper condition <br />ds for which they were originally designed. <br /> <br />sump . t chambers, and other devices, including settled <br />oper y disposed of on an annual basis. One (1) to five (5) year <br />may be granted by the city when the owner presents evidence <br />capacity to remove settled solids in accordance with the <br /> <br />(2) Ponds shall be inspected at least once every five (5) years to determine if settled <br />materials should be removed. Settled materials shall be removed and properly disposed of <br />when the pond is no longer functioning at the original design capacity. <br /> <br />(3) When requested by the city, a maintenance plan must be provided that defines who will <br />conduct the maintenance, the type of maintenance and the maintenance intervals of a private <br />storm water facility before the facility is approved. <br /> <br />(4) All storm water facilities must be designed to minimize the need for maintenance, to <br />provide easy vehicle and personnel access for maintenance purposes, and be structurally <br /> <br />15 <br />