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Exhibit' D" The goals for the Lagoon Greenway include creation of a continuous set of pathways for non - motorized use through the upland and lowland areas along the Indian River Lagoon, provision of a diversity of recreational and educational opportunities within the Greenway Planning Area for the residents and visitors of Indian River County, continuation of the protection and conservation of the natural resources of the Lagoon and adjoining wetland and upland habitats and development of interpretive facilities (and corresponding programs) to educate the public on the significance of the Greenway's natural and cultural resources and the need for their management. Acquisition History In May 1990, United Financial Group, Inc., owner of the +300 acre original ORCA property at that time, unsuccessfully requested that 65 acres of the property (mature coastal hammock) be rezoned from RS -1, Single-family Residential, 1 unit per acre, to RM -10, Multi -family Residential, and 10 units per acre density. United Financial Group's request was denied by the Board of County Commissioners, which cited traffic and utilities "Level of Service" (LOS) concerns. Subsequently, in August, 1991, the property was acquired jointly by Indian River County and the St. Johns River Water Management District for $1,860,000, for purposes of resource conservation and enhancement. The Flinn Tract was acquired jointly by the County, the District and FIND in October 1997 for a total cost of $1,353,550 from Robert and Richard Flinn. The parcel was evaluated as the key parcel in the County's Indian River Boulevard South initiative, since non -fee simple protection methods were being use to protect 6 of the 7 other ownerships in that overall project. The Flinn Tract was the only parcel that contained intact maritime hammock east of the boulevard. Its acquisition also provided opportunities to work with the Indian River County Mosquito Control District to enhance the RIM program within the mosquito impoundment, and to collaborate with FIND for an integrated management regime addressing both the Flinn Tract and FIND's dredged material management site immediately adjacent to the north. Land Use Designations The Future Land Use Element of the Indian River County Comprehensive Plan designates the Conservation Area, including the Flinn Tract addition, as C-1 Conservation, and the property is zoned as Con -1, Public Lands Conservation District. NATURAL AND CULTURAL RESOURCES OVERVIEW Topography and Hydrology The history of mosquito impoundment to reduce mosquito populations along the Indian River has produced significant effects on the topography and hydrology of the estuarine shoreline. In the 1950s and 1960s, salt marshes and mangrove swamps associated with the Indian River Lagoon were "impounded" for mosquito control purposes. A mosquito control impoundment is a marsh or mangrove swamp which has been partially or totally enclosed with an earthen dike. An impoundment allows a marsh (wetland) to be flooded during mosquito egg -laying season. This seasonal flooding substantially controls mosquito production, because mosquitoes will not lay their eggs on standing water. Although 6