09-23-2002 Council Packet - Laserfiche WebLink

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CMP Part 3A. EnvIroniBcntal ProtecMoB Plan 10. Lake bed altcrationi will be discouraged because of adverse short-term and long-term effects on water quality. Dredging of lake beds releases large amounts of otherwise trapped nutrients and silt which adversely affects water quality for long periods of time. Dredging of new channels or inlets will not be approved to provide riparian access where none existed naturally. Dredging will be permitted in limited circumstances only wdiere absolutely necessary to maintain existing natural riparian access permanently lost by something beyond the control of the landowner. Periodic low water conditions or the owner's desire for deeper draft watercraft are not sufficient reasons for disrupting sensitive lake beds. 11. Development or alteration of floodplains w id be restricted. Most of the City's identified floodplains are located along the shoreline or within designated marshlands and will be protected by other provisions applicable to those areas. In addition, >^re floodplains do exist on otherwise dry buildable land, construction, filling or alteration will be strictly controlled so as to avoid flow restrictions, to avoid flood level increases on other properties, and to avoid costly flood damage or pollution dangers. 12. Natural resource investigation will be required as part of all development proposals. This will include topographical information, soil analysis, drainage plans, vegetation plans, erosion control measures and similar site data related to each project, whether public or private. The extent of each such review will be determined by probable environmental impact. Greater detail will be required of larger projects than of smaller ones. As proximity to Lake Minnetonka or a major wetland increases, so will the care and concern increase in direct proportion. 13. Oo-sitc water retention facilities will be required as part of all residential, commercial or industrial development projects whenever necessary to maintain or improve the existing storm water runoff patterns. Whenever a development's location, size, scope or hardcover would tend to increase the quantity of runofif, increase the speed of runoff, or decrease the quality of runoff, that development will be required to provide on-site retention facilities sufficient to maintain the existing situation or to improve the r«‘sulting runoff by reducing quantity, reducing speed and/or improving quality. No development will be permitted to adversely impact it's nei^bors, or the City, by changing drainage patterns or by otherwise adversely affecting storm water drainage. National Urban Runoff Program (NURP) standards will be applied to the design of new stormwater ponds. CHy of Oraao O ilty blaaagcoical Ptsa PsfcSA-U