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Ocean Disposal of Dredged Material

In the United States, uncontaminated dredged material is the primary material disposed into the ocean today. Dredged material is sediment excavated or otherwise removed from the bottoms of the navigable waters of the United States to maintain navigation channels and docks.

Permits and Federal Projects Involving Dredged Material

Under section 103 of the Marine Protection, Research and Sanctuaries Act (MPRSA), the U.S. Army Corps of Engineers (USACE) is the federal agency that decides whether to issue a permit authorizing the ocean disposal of dredged materials. In the case of federal navigation projects, USACE may implement the MPRSA directly in the USACE projects involving ocean disposal of dredged materials. USACE relies on EPA’s ocean dumping criteria when evaluating permit requests for (and implementing federal projects involving) the transportation of dredged material for the purpose of dumping it into ocean waters. MPRSA permits and federal projects involving ocean dumping of dredged material are subject to EPA review and concurrence.

According to USACE regulations (33 CFR 325.6 (PDF)), MPRSA permits for, and federal projects involving, the transportation of dredged material for the purpose of dumping it into ocean waters may not exceed three years.

Dredge working in Mobile Bay Ship Channel, AlabamaOcean Disposal Sites for Dredged Material Permits and Federal Projects Involving Dredged Materials

The permitting process for ocean disposal of dredged material requires the identification and designation of a site where materials may be disposed. Ocean disposal sites are precise geographic areas within which ocean disposal is permitted subject to specific conditions in individual MPRSA permits. Site designations are based on environmental studies of each site and regions adjacent to the site, and on historical knowledge regarding the effects of waste disposal on areas similar to such sites in physical, chemical and biological characteristics. Please see Ocean Disposal Site Designation for more information about the site designation process.

For more information about the ocean disposal of dredged material, including disposal data for ocean dredged material disposal sites, please visit the U.S. Army Corps of Engineers Ocean Disposal Database.

Process for Obtaining an Ocean Dumping Permit for Dredged Material

USACE District Offices are responsible for coordination of all federal actions, including EPA concurrences, pertaining to MPRSA section 103 applications (permit applications for ocean dumping of dredged material). All MPRSA section 103 applications are coordinated with the appropriate EPA Regional Office. For a list of EPA Regional contacts, please see our Protecting Our Oceans Web page.

Clamshell DredgeThe process for obtaining an ocean dumping permit for dredged material typically lasts between six to 18 months after application. Before applying, applicants are encouraged to contact the local USACE District to meet with USACE and EPA in order to fully understand the process and requirements for obtaining the permit. EPA does not concur on a proposed permit unless the proposed dredged material has been shown to meet the ocean dumping criteria. EPA’s ocean dumping criteria consider, among other things:

  • the need for dumping;
  • the environmental impact of the dumping, including the effect of dumping on marine ecosystems, shorelines and beaches;
  • the effect of the dumping on esthetic, recreational or economic values;
  • the adverse effect of dumping on other uses of the ocean including navigation, scientific study, fishing and resource exploitation activities; and
  • land-based alternatives to ocean dumping.

EPA’s ocean dumping criteria are published at 40 CFR 220-229. EPA may concur with or without conditions or decline to concur on the permit, i.e. non-concur. If EPA concurs with conditions, the final permit must include those conditions. If EPA declines to concur (non-concurs) on an ocean dumping permit for dredged material, the USACE cannot issue the permit. Data requirements for ensuring this compliance can be extensive. The permit process is outlined below and consists of the following general steps:

  1. Pre-application Consultation: Includes discussion of alternatives to minimize volume of material proposed for disposal in the ocean, including potential beneficial uses of the dredged material (e.g., sand for beach nourishment or fine grain sediments for marsh restoration), and the information and testing required to evaluate the proposed dredged material.
  2. Evaluation of Dredged Material Proposed for Ocean Disposal: Includes development, approval and implementation of a sampling and analysis plan and an assessment of compliance with the ocean dumping criteria. To learn more about how dredged material is evaluated, please visit our Testing and Evaluation Web page.
  3. Permit Application: 33 CFR 325.1 (PDF) describes the requirements of the permit application under the MPRSA. In addition, the application should include:
    1. an evaluation of dredged material disposal alternatives including an examination of potential beneficial uses of the proposed dredged material;
    2. written documentation of the site dredging history and a general survey of other prior or current dredging activities at or near the site; and
    3. references to existing or prior MPRSA Section 103 permits.
  4. Review of Application for Completeness: Additional information is requested if the application is incomplete.
  5. Issuance of Public Notice by District: Public Notices must include all of the information required in 33 CFR 325.3(a) (PDF).
  6. Evaluation and Review includes, but is not limited to:
    1. Public interest review: the USACE District considers all comments and incorporates them into the administrative record associated with the application.
    2. Evaluation and determination by USACE District Engineer.
    3. EPA review:  EPA has 30 days to request additional information it deems necessary to evaluate the proposed permit. EPA has 45 days with an optional additional 45-day extension to review the information, to evaluate the proposed permit, to determine compliance with the ocean dumping criteria, and to respond in writing on the proposed permit. EPA may concur with or without conditions or decline to concur on the permit. If EPA concurs with conditions, the final permit must include those conditions. If EPA declines to concur (i.e., non-concurs), the USACE cannot issue the permit.
  7. Permit Issued or Denied: A decision to issue or deny a permit is discussed in either a Statement of Findings or Record of Decision and the final decision (i.e., a permit or a denial) is issued.