In May 1997, the IAEA Board of Governors approved the additional protocol model in the INFCIRC/540 (corrected) and asked the Director-General to use this model as a standard text for the conclusion of additional protocols to comprehensive protection agreements. The model additional protocol was designed for all states that have one of three types of safeguard agreements with the IAEA. States that have full safeguard agreements (CSAs) that decide on the conclusion and entry into force of additional protocols must accept all provisions of the model replacement protocol. States that have ad hoc or discretionary offer agreements can adopt and implement the measures of the additional protocol model that they are prepared to accept. As of October 16, 2019, additional protocols are in effect with 136 states and Euratom. Fifteen other states have signed an additional protocol, but it has not yet entered into force. A state provisionally applies an additional protocol to its comprehensive protection agreement until it enters into force. Bolivia, a country in western South America. Bolivia covers 1,500 km north-south and 1,300 km to the west and borders Brazil to the north and east, Paraguay to the southeast, Argentina to the southwest, Chile to the southwest and Peru to the northwest.
Bolivia shares Lake Titicaca, the second largest lake in South America (after Lake Maracaibo), with Peru. The country was closed within the Pacific War (1879-84), but agreements with neighbouring countries granted it indirect access to the Pacific and the Atlantic Ocean. The constitutional capital is the historic city of Sucre, where the Supreme Court is located, but the administrative capital is La Paz, where the executive and legislative branches of government operate. IbWC focuses on the sanitation, distribution and protection of natural river waters and the distribution of borders between the United States and Mexico.  Contracts and agreements focus in depth on the distribution of water from the Rio Grande, the Colorado River, the Tijuana River, La Santa Cruz and other water components flowing into these rivers. These bodies of water must be maintained on both sides at their own expense. The IBWC also protects land along the river from flooding caused by dike and flood projects.  Each country has expanded its IBWC divisions to include organizations within its flood, pollution and waste deterrence department. These divisions include sewage treatment plants, dams,, emergency services, data recording services and field offices.  The cooperation agreement for the protection and improvement of the environment in the border area, known as the La Paz Agreement, was signed on 14 August 1983 and enforced on 16 February 1984.  This agreement on environmental protection provides the political basis between the United States and Mexico for four subsequent programs. Each program dealt with environmental degradation in the border region as a result of the rise of maquiladora industries, those who emigrated to northern Mexico to work in industries, the lack of infrastructure to deal with people, Mexico`s lax regulation of all these factors, the resulting contagion in the United States and the polluting trends in the United States.
The programs were: IBEP (1992), Border XXI (1996), Border 2012 (2003) and Border 2020 (2012).  The Treaty of Guadalupe Hidalgo and another treaty of 1884 were the agreements that were originally responsible for the colonization of the international border, both of which claimed that the centre of Rio Grande was the border, regardless of changes in canals or banks. The Rio Grande moved south between 1852 and 1868, the most radical displacement of the river took place after a flood in 1864.