In many cases the information necessary to carry out a study of environmental impact is not available in preview form, which requires design or adapt the most suitable methodologies to each case particular analysis and selection of aaspectos most important to determine the environmental impacts through effectively consider the fragility and quality of the affected territory.Environmental impact studies referred in the positive implications that involve human actions as well as the negative aspects. Also discusses the benefits that can be achieved through the execution of the same.An environmental impact study uses the comparison of situations and/or environmental dynamics existing in the Middle without and with the implementation a human action. Compare the environmental situation in prior to the implementation of the activity with one that will be generated as a result of its implementation and operation. The direct impacts on the human population and natural resources, also risks which can induce are evaluated both.A study should also identify the characteristics of impacts on aspects such as: Caracter.positivo or negative. Magnitud.Aspectos quantitative and normative. Here are interested in emphasizing bla frequency with which could exceed norms and standards, the number of affected individuals, etc. Significado.valorizacion according to the quality of the medium or variable affected. Tipo.Directo or indirect.
Temporal behavior.Persistent, periodic, intermittent, etc. All these aspects constitute basic elements for decision-making, allowing adequately measure what will happen with a particular human action from the environmental point of view.In short, is to identify and analyse the modifiers elements, scales in them are, critical impact thresholds plus sidnificativos are associated with human actions, the temporal behavior of these impacts and compatibility or unacceptability of them. 3.Contenidos of environmental impact studies. The processes of environmental impact assessment that have been implemented in different countries usually provide various procedures for activities that differ on the significance of their environmental impacts. When the impacts are minor is presented to the authority a simple document stating that it complies with the environmental standards and that the expected effects are not significant.