The South Oahu and Hilo ocean dredged material disposal sites (ODMDS) were, designated by EPA Region 9 and actively used beginning in the 1980s. The primary objective of site monitoring is to assess performance and site conditions relative to disposal operations, including determination of the horizontal extent of the dredged material deposit footprint relative to site boundaries, no adverse impacts of disposal of dredged material, and confirmation of pre-disposal sediment.
ERG contracted ANAMAR to assist in the ODMDS monitoring surveys at the South Oahu and Hilo sites. The surveys were performed using the NOAA ship Hi’ialakai. Tasks included: