United States
Environmental Protection
Agency
Office of Solid Waste
and Emergency Response
January 2015
vwvw2.epa.gov/ernergency-response
Proposed Changes to Subpart J of the National
Contingency Plan
The U.S. Environmental Protection Agency (EPA) is proposing to amend Subpart J of the
National Contingency Plan (NCP) requirements for the use of dispersants, and other chemical and
biological agents to respond to oil spills in waters of the U.S. The public has the opportunity to
comment on this proposed rule during a 90-day period following its publication in the Federal
Register.
On April 22, 2010, the mobile offshore drilling unit Deepwater Horizon sank after an explosion
and a severe fire. The US Coast Guard (USCG), as the Federal On-Scene Coordinator for the
Deepwater Horizon oil spill response, implemented its responsibility to lead the federal environmental
response actions in the coastal zone and oversaw all response operations. EPA provided additional
response support.
The USCG, in consultation with EPA, other federal agencies and affected states, authorized
the use of dispersants on the water surface in an attempt to mitigate the shoreline impacts on
fisheries, nurseries, wetlands and other sensitive environments. In addition, in consultation with
response teams and EPA, the USCG authorized subsurface dispersant application. As part of the
authorization for subsurface dispersant use, EPA and USCG, in consultation with other federal
agencies and affected states, put in place additional requirements including controls regarding the
application of dispersants specific to volume limitations and monitoring.
EPA now expands on the lessons learned through these proposed revisions to Subpart J for
dispersants and other tools for addressing oil spills.
Proposed Rule Amendments
Over the past several years, EPA has conducted research on improved laboratory protocols for
dispersant and bioremediation efficacy. As a result of this research and the lessons learned during
the Deepwater Horizon event, EPA is proposing several amendments to Subpart J. The proposed
Subpart J amendments seek to ensure that:
•	chemical and biological agents have met efficacy and toxicity requirements,
•	product manufacturers provide important use and safety information, and
•	the planning and response community is equipped with the proper information to authorize
and use the products in a judicious and effective manner.
The proposed revisions take into consideration not only efficacy, but also toxicity, contingency
planning, monitoring, confidential business information, and environmental impacts for better
protection of human health and the environment.
Toxicity and Efficacy
The proposed amendments help to ensure that only products that perform effectively in laboratory
testing would be listed on the NCP Product Schedule. Manufacturers would be required to provide:
History
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Proposed Subpart J Rule Amendments
January 2015
•	more detailed product application materials,
•	ecological toxicity data, and
•	human health and safety information, including more detailed instructions for product
application in the field.
The proposed amendments are intended to ensure that On-Scene Coordinators (OSCs), Regional
Response Teams (RRTs), and Area Committees (AC) have sufficient information to support agent
preauthorization or authorization of use decisions.
Contingency Planning and Authorization of Use
Under the NCP, no agent may be used on an oil spill unless it is authorized for use by an OSC. The
RRTs and ACs generally develop "preauthorization plans" which address the specific context in which
products can be used under OSC direction. The proposed amendments to the authorization of use
provisions are designed to strengthen the existing planning and preauthorization framework and to
clarify responsibilities. These elements will assist OSCs, RRTs, and ACs in their advanced planning
activities. The goal is to ensure that preauthorization or expedited decision making plans are
developed and maintained to effectively result in the greatest environmental protection.
Monitoring
Comprehensive monitoring in certain situations is necessary to determine the overall effectiveness of
dispersants. Monitoring dispersant use in the field provides product information for decision-making
during subsurface or prolonged surface dispersant applications. The proposed amendments establish
monitoring requirements for:
•	subsurface application of dispersants,
•	dispersants used for an extended period of time, and
•	for major oil discharges.
Confidential Business Information
When chemical agents are used on oil discharges, it is critically important for the public and all other
stakeholders to have information regarding the chemicals being added to the environment, along with
information about their toxicity and fate. The proposed amendments provide limitations to what
submitters are allowed to claim as CBI, in an effort to balance public access to information with
proprietary business needs.
Environmental Impacts
The proposed amendments are designed to provide the OSCs, RRTs, and EPA sufficient information
regarding product performance, toxicity, and appropriate uses to ensure that planners and first
responders have the best information on which to decide how best to mitigate the environmental
effects of oil spills. The required submission of additional product performance, toxicity, use, and
handling information also helps when deciding whether and which products to use to mitigate hazards
to the environment and human health associated with discharges of oil.
In addition, to encourage the development and use of safer technologies, EPA is proposing a
requirement for the submitter to identify products that have met and can be labeled Design for the
Environment certified.
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Proposed Subpart J Rule Amendments
January 2015
Comments
Comments must be received on or before 90 days after publication of the proposed rule in the
Federal Register. Comments must be identified by Docket ID No. EPA-HQ-OPA-2006-0090, and
submitted by one of the following methods:
•	Federal Rulemaking Portal: http://www.regulations.gov. Follow the on-line instructions for
submitting comments.
•	Mail: The mailing address of the docket for this rulemaking is EPA Docket Center (EPA/DC),
Docket ID No. EPA-HQ-OPA-2006-0090, 1200 Pennsylvania Avenue NW, Washington, DC
20460.
•	Hand Delivery: Such deliveries are only accepted during the Docket's normal hours of operation,
and special arrangements should be made for deliveries of boxed information. The Public Reading
Room is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal holidays. The
telephone number for the Public Reading Room is 202-566-1744.
For More Information
Read the Proposed Subpart J Rule Amendment:
http://www2.epa.gov/emergency-response/national-contingency-plan-subpart-j
Visit the EPA Emergency Response Website:
http://www2.epa.gov/emergency-response
Call the National Contingency Plan Product Schedule Information Line
(202) 260-2342 (phone)
To Report an Oil or Chemical Spill
Call the National Response Center:
(800) 424-8802 or (202) 267-2675
TDD (202) 267-4477
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