07-16-2012 Planning Commission Packet

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e. Analysis of the site based on the findings and recommendations of the Orono Natural Resources Inventory with regards to: •Conceptual greenways and open space corridors; •Existence of rare plant communities; . � •Potential need for proactive management and protection. (Ord. No. 67 3rd series, § 1, 1-11-2010) Sec.78-1635. Basic Conservation Design Master Plan requirements and evaluation criteria. The developer shall prepare a Conservation Design Master Plan for development of the property, consisting of written and visual documentation including maps in an acceptable electronic format, addressing the following topics: (1) Consideration of the existing drainage system; (2) Establishment of a stormwater management system, using multi-cell treatment principles, and defining proposed methods of stormwater phosphorus reduction; �(3) Removal of invasive species and diseased trees; (4) Protection of significant tree stands and woodlands that support scenic and/or ecological goals, including mitigation of any such;stands to be impacted by development activities; (5) Protection of existing wetlands, including augmentation of buffers, mitigation of impacts, and enhancement of degraded systems; (6) Justification and mitigation of any negative impact to ecological communities. "Negative impact" includes any modification to a lower level of ecological community quality, as described by the Minnesota Land Cover Classification System (M-34X Modifiers); (7) Maintenance of ecological connections through site design, as shown on the Orono Natural Resource Inventory; (8) Maintenance and protection of existing positive views, and mitigation of any existing or proposed negative views using appropriate measures such as site layout, screening, building design and coloration, etc.; and (9) Preservation or reinterpretation of existing landmarks. The planning commission and city council shall evaluate the Conservation Design Master Plan to determine whether the proposed development: � (1) Preserves existing drainage patterns and enhances stormwater collection and conveyance by applying an ecologically-based multi-cell stormwater management system that improves ecosystems by reducing reliance on manmade infrastructure, reducing downstream runoff of contaminants, and enhancing ecological connections; (2) Includes a program for the removal of invasive species and diseased trees; protects significant tree stands and woodlands that support scenic and/or ecological goals; and includes mitigation of any such stands that will be impacted by development activities; �� 3 Protects existin wetlands b im lementin new buffers or au mentin existin buffers; miti ates � ) 9 Y � p 9 9 9 9 9 identified wetland impacts; and enhances degraded wetland systems; . (4) Results in no negative impact to ecological communities of Ecological Management Categories 1 and 2; results in no negative modification of any ecological communities as described by the Minnesota Land Cover Classification System; and establishes, maintains and improves native ecological communities including natural and semi-natural areas to provide wildlife habitat and support natural ecological functions (i.e. drainage, filtering, buffering, etc.);