As of 2009, 29 mostly small municipalities had signed concession contracts with private companies.

As under all concession contracts, the infrastructure itself remains public, but is being operated by the private sector.

The segment was re-tendered as a concession contract in February 2013.

The concession contract was signed for the unusually long duration of 99 years.

In 2002 a process was initiated to renegotiate the concession contract.

The concession contracts fixed a 22 percent annual rate of return for the private operators.

Thus, local regulatory agencies were created for the concession contracts to secure a sustained process.

I am optimistic about the prospects for the capital being put up once the projects and the concession contracts are in place.

That will finally allow us to found this concession contract on a reasonable financial basis.

The company sent a commissioner to Europe to bring immigrants to form agricultural colonies, as required by the concession contract.