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June 8 , 2009 JUN 0 9 / 00 " Mr . Christopher J . Kafer, Jr. , P . E . , County Engineer Indian River County Engineering Division 1801 27`h Street Vero Beach, FL 32960 Re : Indian River County Parks Maintenance Complex (CAI Project No . 05 -60E) Supplemental No . 3 to Work order No . 1 to the Professional Civil Engineering Services Agreement Dear Chris : We are pleased to present this proposal for additional services relative to designing a fiber optic interconnect plan and observing the installation of conduits and pull boxes from the existing fiber optic splice vault at the north-east corner of 58 `h Ave and 77"' Street to the project site . The proposed interconnect conduit is needed to accommodate the County ' s fiber optic service installation to the new Parks Maintenance Division office building . The fiber optic facilities along 58`h Ave were only recently constructed and it is at the direction of the County ' s Telecommunications Division that the proposed off-site utility extension be included in this project ' s scope of work. All provisions of the original Work Order No . 1 to the Professional Civil Engineering Services Agreement (dated 1 /9/07), as well as Supplemental No . 1 (dated 6/5 /07) and Supplemental No . 2 (dated 9/9/08) , shall remain in full force and effect, unless otherwise specifically modified herein . A man-hour fee estimate is attached as Exhibit "A" for your use . The following describes our proposed scope of services and terms of agreement between Carter Associates, Inc . (Engineer) and Indian River County (County) : Fiber Optic Interconnect Conduit : In general , the design plans will be extended and revised to add two 2 " PVC conduits with pull boxes every 3004eet, connecting from the existing fiber optic splice vault at the north-east corner of 58t1' Ave and 77` ' Street and ending at a new splice vault at the project frontage on 77 `h Street . The project documents will be modified as follows : • Revise the Utility Plan sheet (U4 ) to add a fiber optic splice vault at the east side of the proposed western driveway onto 77`h Street, and interconnect conduits running to the west . • Revise the Water Details sheet (U4) to include an interconnect plan showing conduits and pull boxes from the project site to the 58 `h Ave connection point. • Add pull box and splice vault details on sheet U4 . Assumptions • In developing this proposal, the following assumptions have been made and deviation from these assumptions may require additional expenditures on behalf of the County to the Engineer .