International Coordination

Frequently Asked Questions on Transboundary Issues: US-Mexico Inland Response to Hazardous Materials Accidents (1997)
Answers frequently asked questions (FAQ's) concerning emergency response to hazardous material accidents along the inland border between the United States and Mexico. Issues addressed in this draft were identified by the NRT Response Committee's Subcommittee on Transboundary Issues.

Inland Border Region

Mexico-United States Joint Contingency Plan (EPA)
The Mexico-United States Joint Contingencies and Emergencies Plan for Preparedness and Response to Events Associated with Chemical Hazardous Substances in the Inland Border Area (hereafter referred to as the Inland Border Plan), provides a mechanism for cooperation between Mexico and the United States to provide response to a chemical hazardous substances contingency or emergency that may present a significant threat for both Participants or that affects one of them in such a way that justifies the notification of the other Participant or request for assistance.

Maritime Border Region

Mexico-United States Joint Contingency (MEXUS) Plan

The Joint Contingency Plan between the Secretariat of the Navy of the United Mexican States and the United States Coast Guard Regarding Pollution of the Marine Environment by Discharges of Hydrocarbons and Other Hazardous Substances (MEXUS Plan) promotes a coordinated system for regional preparedness, planning, and response to a pollution incident that could affect the coastal waters or marine environment of the other country by providing a guide that supplements the existing national response system of each country and facilitates joint response at the regional level.  The MEXUS Plan is supplemented by two Regional Annexes, MEXUSGULF and MEXUSPAC, which are implemented under the oversight and responsibility of the respective Mexican Navy (SEMAR) Region Commanders and U.S. Coast Guard (USCG) District Commanders.  The Regional Annexes provide additional guidance with respect to the communication and coordination processes that must be used on either side of the border.


The MEXUS Plan’s Gulf of Mexico Regional Annex (MEXUSGULF Annex) and Pacific Regional Annex (MEXUSPAC Annex) compliment the MEXUS Plan.  The MEXUS Plan provides standard operational procedures with respect to joint response in case of pollution incidents that may affect the coastal waters or marine environment of the other country.  The purpose of each Annex is to augment the MEXUS Plan with regional details.

External Link

U.S.-Mexico Border 2020 Program: Goal 4: Enhance Joint Preparedness for Environmental Response (EPA)
The U.S.-Mexico Environmental Program: Border 2020 is an eight-year (2013-2020) binational effort designed to protect the environment and public health in the U.S.-Mexico Border region, consistent with the principles of sustainable development. Border 2020 has identified five long-term strategic goals to address environmental and environmental health challenges in the border region.


Working together to protect against threats to our land, air and water

United States Environmental Protection Agency United States Coast Guard United States Department of State United States Department of Defense U.S. Department of Homeland Security (FEMA) United States Department of Energy United States Department of Agriculture United States Department of Health & Human Services United States Department of the Interior United States Department of Commerce United States Department of Transportation United States Nuclear Regulatory Commission United States General Services Administration United States Department of Justice United States Department of Labor