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4. Supplemental Nourishment. If there is not adequate volumetric capacity within the Sectors 1 and 2 construction fill template to meet the average annual target bypass volume, supplemental fill material should be placed by the District on the downdrift beach in areas determined by Indian River County from R-17 to R-30. Supplemental volumes will be identified through beach survey and agreement between the County and the District. A figure identifying the location of the Supplemental Fill template (R-17 — R-30) is attached as Exhibit 2 and incorporated by reference herein. District and Indian River County Responsibilities: In order to maximize success of the Sand Bypassing and Supplemental Nourishment Plans, the District and Indian River County must cooperate closely, and any such placement should be guided by the Sebastian Inlet Management Plan and Indian River County's Beach Preservation Plan. • County shall be responsible for: 1) identifying, designing, permitting, and constructing Beach Nourishment from R-17 to R-30; and 2) securing necessary releases and approvals from upland property owners. • District shall be responsible for fill excavation, transportation and placement of beach compatible sand on downdrift beaches to meet the FDEP target bypassing objective. • District shall be responsible for: 1) identifying, designing, permitting, and constructing Sand Bypassing locations north of R-17; and 2) securing necessary releases and approvals from upland property owners; and 3) coordinating with County supplemental fill placement projects from R-17 to R-30. • District shall be responsible for any monitoring requirements that may be triggered solely by the placement of the District within the County's R17 through R-30 supplemental fill boundaries. District responsibility at post -placement monitoring shall end when a County initiated project triggers required monitoring. • County and District shall continue to coordinate monitoring to maximize efficiency and minimize overall cost. 5. Bypass Credit. District and County agrees, in conformance with Background Recitals 3 and 4, bypassed quantities of sand dredged from the inlet system and/or trucked from upland sources and placed -on the downdrift beaches by the District will be applied towards the Sebastian IMP bypass objective. 6. Beach Access. District agrees to coordinate beach projects with appropriate County departments. County agrees to authorize, at no expense, District and its Contractor use of Treasure Shores Beach Park for the limited purpose of delivering beach material and locating certain heavy equipment onto the beach to perform Inlet sediment bypassing and supplemental downdrift related activities. Ambersand Beach Park may also be closed, upon request by the District and concurrence by the County, for public safety related to District sand placement activities but shall not be utilized for locating certain heavy equipment onto the beach. District agrees to restore utilized beach access to their pre -use condition at no expense to County. 7. Monitoring. District agrees to assume all physical and biological monitoring associated with the approved Sectors 1 and 2 fill template as required by permits for purposes of measuring the potential impacts to sea turtles, shorebirds, and nearshore hard 191