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5. WETLANDS MANAGEMENT -~ 5.1 GENERAL As described in Section 3, the formation of the landscape in Orono has resulted in the creation of many wetlands. The City recognizes a variety of functions and values provided by [ts wetlands, including: ❖ Acting as part of the natural surface water management system • maintenance of water quality • flood attenuation • erosion and sedimentation reduction ❖ Providing habitat for a variety wildlife ❖ Preserving open spaces and natural landscapes ❖ Contributing to an enhanced overall quality of life Orono's leaders formally recognized these values in the 1960 1s and adopted the City's first comprehensive wetland protection ordinance in 1970. Based on various water quality /quantity studies that supported the 197 4 SWMP, Orono adopted additional ordinances in 1975, which prohibited filling or draining wetlands, and required a 26-foot setback from a wetland boundary to any construction or grading activtty. This section of the SWMP describes the City's multi-faceted resource management approach to maintaining or improving the City's wetland resources. Stemming from the goals and policies of both MCWD and Orono, the following process serves as the backbone of Orono's wetland management plan: ❖ Discussion of impacts to wetland resources (Section 5.2) ❖ Inventory wetlands likely to be affected by runoff (Section 5.3) ❖ Assessment of wetland functions and values (Section 5.3) ❖ Determination of a runoff susceptibility rating (Section 5.3) ❖ Develop protection strategies to minimize impact (Section 5.4) • classify wetlands by required level of protection • volume and rate control (quantity) to manage bounce • phosphorous limits to maintain or improve water-quality • buffer strip standards for quantity and quality ❖ Plan for enhancement or restoration of wetlands (Section 5.S) • identify candidate wetlands • .create an improvement plan for each City of Orono C:11~ro JA/-=t,/-,.., M-.--.-----"" n, __ 5-1