The Environmental Protection Agency (EPA) has designated an Ocean Dredged Material Disposal Site (ODMDS) at Isles of Shoals North to serve Maine, New Hampshire, and the northern Massachusetts coastal region. The Isles of Shoals North Disposal Site (IOSN) is located approximately 10.8 nautical miles east of Portsmouth, New Hampshire. The Final Environmental Assessment for theDesignation of an Ocean Dredged Material Disposal Site for the Southern Maine, New Hampshire, and Northern Massachusetts Coastal Region (IOSN EA) was released on September 25, 2020. EPA released the Draft IOSN on September 18, 2019 for public comment. The comment period ended on October 18, 2019. Both the Final and Draft IOSN EAs can be found below. For more information, please visit the EPA Region 1 Ocean Dumping Page.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Final Environmental Assessment for the Designation of an Ocean Dredged Material Disposal Site in the Southern Maine, New Hampshire, and Northern Massachusetts Coastal Region and Finding of No Significant Impact (PDF)(634 pp, 52 MB, September 25, 2020)
- Draft Environmental Assessment and Evaluation Study for Designation of an Ocean Dredged Material Disposal Site for the Southern Maine, New Hampshire, and Northern Massachusetts Coastal Region (PDF)(423 pp, 33 MB)