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40 40 • r Nearshore hardbgttom resources exist within the plan view limits of each of the proposed sector beachfill projects. The character and exact extent of these resources, as well as anticipated primary and secondary impacts associated with beachfill construction, will be determined in a study of project feasibility to be initiated by Indian River County in December 1998. A summary of the project design features for each of the SPP projects is provided in Table 11, 4.2 PROJECT COSTS Uniformed sand unit prices are assumed for the purpose of plan development and costing purposes for each "project sector" at $8 per cubic yard in place. These unit costs were derived by Indian River {County and were reduced to $7 per cubic yard for the anticipated projects in Sectors 1, 2 and 3 to account for a probable single mobilization of dredging and beachfill equipment to construct all three (3) sector improvements sequentially. Essentially the mobilization fee is assumed to be approximately $1,000,000 and thus the unit sand placement is estimated at $6 per cubic yard. Mobilization of dredging equipment and work crews will be dependent upon sand source proximity to each of the sector beachfill sites, the dredge plant type necessary to properly access and excavate sand from the borrow area(s) and transport it to share, the proximity of such equipment and crews to the project site at the time of project bidding, and whether one or more projects are anticipated to be bid sequentially. An analysis of present worth and annualized costs of the plan recommended construction (restoration) and maintenance (renourishment) was conducted to provide an indication of budgeting requirements necessary to implement plan recommendations. The year of construction and maintenance events is assumed to assist with this computation. A three (3) percent discount rate (five (5) percent interest and a two (2) percent inflation factor) was further assumed