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a we %&VAV currents in the study area . The primary focus of the task will be the determination of the parameters required to properly simulate the currents and water levels . iii . Wave Transformation Calibration Wave measurements and water levels will provide the offshore boundary conditions for each calibration run . Available nearshore data will be used to calibrate the transformation of the waves . FIT collects offshore data in 90 feet of water and closer in at 28 feet. This data will be used to calibrate the wave transformation . The purpose of this task will be the determination of the parameters required to properly estimate wave transformation . iv . Calibration of Morphological Changes ( Erosion & Deposition ) Once the DeIft3DFLOW and SWAN models have been calibrated to simulate water levels , currents , and wave transformation , the Delft3DFLOW model will be calibrated to simulate morphological changes (erosion & deposition) specific to this study . The basis for calibration will be the beach profile and bathymetric changes between at least one past condition and the present condition . The starting bathymetry for each calibration run will be a past bathymetry . The present bathymetry or another past bathymetry will provide the basis for evaluating the results . The model will be calibrated to match the sediment budget developed through comparison of survey data . Wave climate information will be utilized to determine the typical wave conditions during the morphological change calibration period . The typical wave conditions will be schematized using approximately 19 wave cases (CPE , 2009) combined with a representative tide to delineate the offshore boundary conditions . A sufficient number of calibration runs will be performed to determine the best combination of parameters to realistically simulate the beach profile changes in the entire study area . v . Modeling of Preliminary Alternatives As discussed previously , a finer grid and the DELFT3D- FLOW module will be applied in Sectors 3 , 51 and 7 , where fill and structural solutions will likely be required to address chronic erosional problems . The preliminary alternatives developed during the beach management strategy section will be evaluated using the DeIft3D model . We will model two fill only scenarios and 4 structural solutions . Each modeled alternative will be compared to a baseline condition in order to draw conclusions on the expected result of implementing each scenario . Optimization of the structural layout is not proposed as part of this effort . Instead , the concept will be evaluated to determine whether it is cost effective and feasible , and estimate any downdrift or offshore impacts . The alternatives analysis will incorporate up to 14 production runs . Each of the 7 alternatives ( no action , 2 fill scenarios and 4 structural scenarios) , will be analyzed under a 10 -year storm event and then a 5-year simulation period .