ABSTRACT
The article analyzes the issue of determining environmental risk for the purposes of environmental safety. When using risk assessment methods, we should understand that the concept of risk implies the probability of a negative event multiplied by the amount of damage. In this regard, the issue of risk and uncertainty is considered. The author believes that the essence of assessing any risk is not to completely avoid or decrease it but to calculate it and determine whether it is acceptable or unacceptable and whether the damage is controllable or uncontrollable. All this determines the safety (acceptability) of the risk and the amount of losses that should be accepted when carrying out construction works. A matrix of distributions of environmentally extreme conditions gives an idea of quantitative characteristics of possible ecosystem “failures” as a result of anthropogenic interference.
