With this purpose, work began on the preparation of the Environmental Impact Study “Las Salinas Land Reclamation Project”, which included more than 5 campaigns to characterize the impact on soil and water, environmental monitoring and corrective activities, with the objective of rehabilitating the land. This study was approved by the National Environmental Commission (CONAMA) in 2004 and by the Council of Ministers in 2006, in its first phase corresponding to the use of Parks and Gardens. The remediation was based on a method widely used worldwide called “Human Health Risk Assessment” (HHRA), which consists of evaluating the implications for people’s health associated with chemical compounds present in soil and water as a result of an alteration of their natural condition. For the phase approved for Parks and Gardens use, the HHRA defined the cleaning of the first meter of soil, since it is the one that is in direct contact with people via inhalation, ingestion and dermal contact; in addition, it defined that the subsurface soil (beyond the meter) does not represent a risk for the circulation of people on the ground. However, a subsequent stage that involves excavating subsurface soils will require new studies to define the relevant remediation activities. The remediation activities, or land cleanup, began in 2009 and included the removal and safe disposal of soil and water; in addition, above-ground and underground infrastructure was removed, including pipes in the beach area. In total, over 50,000 tons of soil were extracted and disposed of in authorized and safe storage areas. Each of the works was supervised by , as Independent Environmental Auditor, who reported directly to the authorities on each of the tasks performed. In 2012 and 2013, the so-called “Final Soil Monitoring” was performed, the objective of which was to verify and certify the final condition of the surface soil that was subject to remediation. The reports of Copec and Fundación Chile were submitted to the Environmental Impact Service (SEA) in 2013, which meant the closure of this stage. This process meant an investment of close to US$25 million.
