1) Repeated topographic surveys of washover fan, dunes, and beach profile; 2) installation and repeated monitoring of water levels and salinity in several transect of wells across the island on Parramore at the pimple pump site, and if possible, one transect at the south Cobb fan site as well; 3) periodic sampling of overwash sediment with shallow trenches; and 4) one-time transect of cores from selected areas at the Parramore site. High frequency measurements/sampling will occur between June-August, with approximately quarterly visits during the remainder of the two years. Impact of sampling on site integrity:: Sampling will have nominal effect on site integrity except for the presence of transect of PVC piezometer wells which will be in place for a period of 1-2 years. Little disturbance will occur from topographic surveying and shallow trenching. No hazardous materials will be involved in the project.