Hawaii Ocean Dredged Material Disposal Sites Monitoring Reports

EPA Region 9, often in coordination with the U.S. Army Corps of Engineers (USACE), conducts oceanographic surveys to identify appropriate locations for ocean disposal sites and to monitor the impacts of regulated dumping at the ocean disposal sites. Region 9 monitors Hilo, HI and South Oʻahu, HI Ocean Dredged Material Disposal Sites to ensure that unexpected or significant negative effects are not occurring from past or continued use of the disposal site and to verify regulatory and permit compliance.

• 2013 Hawaii Ocean Disposal Site Monitoring Synthesis Report (pdf) (4.36 MB, April 27, 2015)
  This report synthesizes the results and analyses from sub-bottom profiling, sediment profiling, plan view imaging, sediment grain size, chemistry, and benthic sampling conducted in 2013 on the South Oʻahu and Hilo Ocean Dredged Material Disposal Sites. These results were used to update the site management and monitoring plans for the specified sites.