It is important to know the effect of different environmental aspects surroundings projects and to value them during the process. Not only from the point of view of design, but also from the point of view of the CONSTRUCTOR.

During the drawing-board stage, and especially when looking at civil work, the impact the project will causes is taken into account.  In fact, for many types of projects  a Declaration of Environmental Impact on the part of the competent environmental organism is mandatory. This implicitly indicates the condition that one must always take into account the impact the project may have and what changes in design can be made so that  negative effects do not surpass the benefits that will be obtained.

The objective is to complement the measures established by the Declaration of Environmental Impact, assuring that the construction process considers all the environmental aspects caused by a project. In this way, various factors are weighed and determined to be  significant so as to  diminish the impact to the environment by means of preventive measures and control. 

 The main environmental aspects of a project may be:

Atmospheric emissions
Emission of dust and particles
Emission of smoke and gases
Noises

Vibrations
Spills
Spills in the sanitation
Spills in the ocean
Spills and affects to water sources such as river, dam, etc..

Residues
Urban residues
Non-dangerous residues
Dangerous residues

Raw materials and natural resources
Water acquisition
Acquisition of channels 
 Acquisition of land
Occupation water
Water consumption
Consumption of electrical energy
Fuel Consumption

Other
Changes in accessibility
Affects of services
Affects to the patrimony
Affects to the fauna
Affects to natural spaces
Affects to the vegetation

Each project evaluates, on the basis of parameters previously established, how significant the environmental impact in each particular case. This way measures necessary are taken to avoid the negative effects on the surroundings and maintain environmental objections to a minimum. These parameters consider the scale and the magnitude of the impact, the seriousness and the duration of the aspect, and the technical difficulty to correct the impact.