Jump to main content or area navigation.

Contact Us

Water: Uniform National Discharge Standards (UNDS)

Uniform National Discharge Standards (UNDS) Frequently Asked Questions


What are Uniform National Discharge Standards (UNDS)?

UNDS will set national performance standards that will require the use of marine pollution control devices (MPCDs) to control discharges incidental to the normal operation of Armed Forces vessels. EPA and Department of Defense (DOD) are given authority, under Section 312 of the Clean Water Act Exit EPA Disclaimer, to develop these standards.

EPA and DOD anticipate that the standards will enhance environmental protection of U.S. waters by creating nationally protective standards for from vessels of the Armed Forces.  UNDS will ensure that the U.S. Armed Forces vessels can continue to meet operational requirements and these national standards will reduce the environmental impacts associated with these discharges, stimulate the development of improved pollution control devices, and advance the development of environmentally sound military vessels.

Top of page



What is a marine pollution control device (MPCD)?

An MPCD is any equipment or management practice designed to treat, retain, or control discharges of a vessel. EPA and DOD must consider seven statutory factors in determining whether it is reasonable and practicable to require the use of an MPCD.

Top of page



How did EPA and the Department of Defense (DOD) evaluate the discharges?

Phase I Identify and
Characterize
Discharges
Joint EPA/DOD
Rule
Final Rule
Published on
May 10, 1999
Phase II Establish MPCD
Performance
Standards
Joint EPA/DOD
Rule
Batch One
Rulemaking
Underway
Phase III Develop
Implementing
Instructions
DOD Only Rule Completed One
Year After Phase II


Phase I:
EPA and DOD published Phase I of the Uniform National Discharge Standards rule, on May 10, 1999. The Phase I rule identified all discharges incidental to the normal operation of Armed Forces vessels, and characterized each discharge to determine if it required control, based on its potential to have an environmental impact. The Phase I rule also established procedures for no-discharge zones.

Phase II:
In Phase II, EPA and DOD, in consultation with the U.S. Coast Guard (USCG), are developing standards for each discharge that was determined to require control in Phase I.  The standards will be established in two batches.

Phase III:
In Phase III, DOD, in consultation with EPA and USCG, will establish regulations governing the design, construction, installation, and use of MPCDs onboard vessels of the Armed Forces. These regulations will be required to meet the performance standards promulgated in Phase II. The Phase II performance standards do not become effective until Phase III requirements are in place.

Top of page



What have EPA and DOD done to assess discharges produced by Vessels of the Armed Forces?

As part of the UNDS process, EPA and DOD evaluated the environmental effects of the discharges, and proposed performance standards for MPCDs to control these discharges. Each discharge is evaluated according to the following statutory factors listed in Section 312(n)(2)(B):

  • Nature of the discharge
  • Environmental effects of the discharge
  • Practicability of using the MPCD
  • Effect of an MPCD on the operation of a vessel
  • Applicable United States law
  • Applicable international standards
  • Costs of MPCD installation and use

Top of page



What vessels are covered by UNDS?

navyshipsUNDS is Applicable to:
U.S. Navy
U.S. Army
U.S. Air Force
Military Sealift Command
U.S. Marine Corps
U.S. Coast Guard

UNDS applies to Vessels of the Armed Forces operating in the navigable waters of the United States  or the waters of the contiguous zone.

UNDS is Not Applicable to:
Maritime Administration vessels
Time- and voyage-chartered vessels
Vessels while under construction
Memorial/museum vessels
Vessels in drydock
Amphibious vehicles
Army Corps of Engineers vessels
Private vessels
Vessels owned or operated by states, local, or tribal governments
Commercial vessels

Top of page





How have EPA and DOD involved the states?

Clean Water Act Section 312(n) preempts states from regulating the fourteen discharges identified during Phase I that do not require control and will preempt states from regulating the remaining 25 discharges once Phase III is complete. Consequently, Executive Order 13132 requires that appropriate state elected officials or their representative national organizations be consulted.

Outreach efforts involving the states, territories, tribes and other federal agencies is an integral component of the UNDS rulemaking process.  EPA and DOD have consulted extensively with state environmental agencies. 

 

Top of page





How does UNDS affect the public, the states, and the Armed Forces?

The public:

Man_fishing
United States Armed Forces vessels operate nationwide in coastal and inland waters. We believe the UNDS requirements will enhance environmental protection of these waters by reducing the major constituents of concern from Armed Forces vessel discharges that could be harmful to our coastal communities, fishing and recreational industries, wildlife and human health.

UNDS applies to Vessels of the Armed Forces operating in the navigable waters of the United States  or the waters of the contiguous zone.


CoastGuard_Patrol_DCThe states:

Clean Water Act Section 312(n) preempts states from regulating the fourteen discharges identified during Phase I that do not require control and will preempt states from regulating the remaining 25 discharges once Phase III is complete.  States, however, can petition EPA and DOD to review whether or not a discharge should require control by an MPCD. Additionally, the Phase I rule established a process through which states may request the establishment of no-discharge zones (where any release of a specified discharge is prohibited).


The Armed Forces:

USCG_tug
Ultimately, 25 performance standards will be promulgated for discharges from Armed Forces vessels. While operating in inland waters or within 12 nautical miles of shore, Armed Forces vessels will be required to meet the performance standards.

UNDS standards will advance the ability of the Armed Forces to better design and build environmentally sound ships, to train crews to operate vessels in a manner that is protective of the environment, and to maintain operational flexibility both domestically and internationally. Additionally, UNDS is expected to stimulate the development of innovative vessel pollution control technologies.

Top of page






a-zindex2

Jump to main content.