environmental commitment


Soil and noise

Upper layer of the earth's crust, situated between the bed rocky surface and composed of mineral particles, matter organic, water, air and living organisms and which constitutes the interface between the earth, the air and the water, which confers capacity to carry out so many natural functions like the use of the


Environmental Functionalities of the Soil

Soils are essential for the environmental health of the planet to fulfill essential differ not functions for the maintenance of the biosphere.

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Base function
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Soils are the basis of fixation and growth of the flora, influence the development of habitats and play a very important role important in animal diversity on the planet. In turn, contain millions of organisms that are contributing by ecosystems through the decomposition of residues (including toxic), absorption of atmospheric elements, the oxygenation of the same soil or the regulation of the hydrological and carbon cycles.

Water supply
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The soil is responsible for the distribution and storage of rainfall and therefore ultimately key in the water supply just as much for ecosystems as for the demands for human uses, consumption, irrigable, industrial use or recreational activities. Similarly, it develops key synergies due to the scarcity of water and droughts, as well as in controlling flood risks.

Climate regulation
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Soils help regulate climate by absorbing CO-2 from the atmosphere and storing large amounts of carbon, which contributes to climate change mitigation and adaptation to the same.

Forests and soils
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Forests and soils are large greenhouse gas sinks that absorb CO2 through photosynthesis and store it as carbon, turning it into organic matter. The forest biomass, wood and, of course, the soil are great carbon stores. In fact, it is estimated that European soils house 70,000 billion tons of organic carbon.

However, if such sinks emit more carbon than they absorb, they can become a source of greenhouse gases. A loss of only 0.1% of carbon accumulated in European soil to the atmosphere is equivalent to the emission of 100 million more cars on the continent. While forest lands and grasslands they pick up 100 million tons of carbon annually; the lands of cultivation set loose between 10 and 40 million tonnes.

The degradation of the soils can cause part of the CO2 previously absorbed and stored as carbon in the sinks, to be sent back again into the atmosphere. To this environmental problem one must add, in addition, the acid rain that alters the chemical composition of the soil, produces the loss of its neutralizing capacity (acidification) and moves the heavy metals in the soil that prevent vegetation from properly absorbing the water and the necessary nutrients. In addition, these “mobilized” heavy metals may reach sources of consumption, with the consequent impact on the health of the people.

Soils and underground water control strategy in EDP Spain

Protection of soil and underground water is integrated into EDP Spain’s strategy of environmental protection, and it develops through structural and management actions.

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Structural actions
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Zoning and paving of activities are basic elements of protection, to which one can add the installation of collection tanks that spill, and beaches of discharged products, networks independent water, etc..

Management measure
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Control of leakage and spill containment and collection are the main management measures to minimize the risks of soil contamination, which are developed by means of leak detectors in buried tanks, monitoring and control of groundwater through piezometers, environmental emergency kits with absorbent materials, realization of simulations and continuous training of workers, external means of rapid intervention, etc…

For the monitoring and control of facilities with more risk of soil contamination the installation of piezometers stands out for the regular monitoring of groundwater, so that if a contaminant might be identified, preventive and/or corrective actions can be taken on the potentially polluting agent or the soil itself (remediation).

In these facilities, there has been a campaign of characterization of soil, called Base Report, which will be taken into consideration when it becomes time to dismantle the facilities, given that the site must be maintained suitable for potential future use. Similarly, a Risk Analysis on the health of people has been made, which ensure that under the current conditions of the soils of these centers there is no risk to people, for example by volatile inhalation, or dermal migration risks contaminants to nearby water sources.