The San Lorenzo Thermal Power Plant was environmentally assessed by the National Energy Commission and the public entities with environmental competency of the Atacama Region. It also obtained its corresponding RCA N° 161 on May 20, 2008.
Through Exempt Resolution N° 190 of December 4, 2013, the Environmental Assessment Service of the Atacama Region decided, in relation to the Environmental Relevance Letter submitted by Enlasa Generación Chile S.A., that Enlasa is not required to enter into the Environmental Impact Assessment System. This letter includes the installation of four additional generating engines, in order to achieve the power authorized by the RCA, and definitively cancels the use of fuel N° 6 in all the premises of the project.
The San Lorenzo plant has its own strict environmental monitoring program for the air component. It has an air quality monitoring plant that constantly measures online parameters such as PM10, SO2, NOx, O3 and CO.
In the case of particulate material (PM10), the plant has a beta analyzer (continuous), and has continuous analyzers for gases installed on a rack inside a monitoring booth with the appropriate temperature and conditions. The data is stored in a data-logger with a storage frequency of every 5 minutes.