The A9 project consists of widening the platform from three to four lanes along a 11.4 km section of the A9 motorway between Badhoevedorp and Holendrecht in the Netherlands. This is the sixth and final section of the Schiphol–Amsterdam–Almere (SAA) corridor developed by the country's Ministry of Infrastructure. The works also include adapting eleven existing structures, new links to other roads, bridges and false tunnels. The project also includes maintenance for two years once construction is complete.

Considering the intrinsic characteristics of the project and with a view to minimising any environmental impact caused by the works, this project is being undertaken under CO₂ Performance Ladder.

The CO₂ Performance Ladder aims to achieve a substantial improvement in reducing CO₂ emissions by firms, encouraging specific measures to be implemented in their works, projects and value chain. For FCC Construcción this certification shows the company's commitment to cutting emissions
and reducing the environmental impact of the works.

Achieving the highest level of CO₂ Performance Ladder certification has made it necessary to make material and human resources available for the certification in order for the project to meet the relevant requirements.

Compiling data and managing documents, together with the synergies that it has been possible to leverage by calculating FCC Construcción's carbon footprint, have been key factors in the calculation of CO₂ emissions in accordance with the CO₂ Performance Ladder requirements.

Obtaining level-5 certification, which is the highest possible level on the CO₂ Performance Ladder scale, has meant making an undertaking to reduce CO₂ emissions by approximately 3,750 tonnes per year with regard to the reference calculation, besides an expected reduction of 30,000 tonnes of CO₂ during the working life of the project (2020–2028).

Renewables will be deployed by adopting energy-efficiency measures and replacing the use of fossil fuels at the projects offices and sites. Particular attention will also be paid to reducing CO₂ emissions related to steel, concrete, soil and asphalt, which are the materials with the most impact on infrastructure design.

FCC Construcción thus strengthens even further its efforts and commitments to integrate and adopt specific measures to mitigate and adapt to climate change on this project.