DECISIONS IN TOOLBOX Clause Samples

DECISIONS IN TOOLBOX. ‌ 2.3.1 Risk classes‌ The risk classes used in the toolbox are shown in Table 2.3.1 below. Depending on a combi- nation of levels of consequence and hazard selected by the user, three risk classes can be assigned by the toolbox: Low, Medium and High. In this simplified model, "High risk" repre- sents an unacceptable risk that requires new site investigations, stability calculations and mitigation measures, "Medium risk" is a risk level that requires considering doing new site investigations and analyses. For "Low risk" situation, further risk reducing measures are not necessary. 2.3.2 Ranking of measures‌ The selection of the most appropriate mitigation measures to be adopted in specific situations take into account the following: (1) the factors that affect the hazard, in terms of the type, rate, depth and the probability of occurrence of the movement or landslide, such as, for example: − the physical characteristics of the geo-system, including the stratigraphy and the mechanical characteristics of the materials, the hydrological (surface water) and the hydro-geological (groundwater) regime; − the morphology of the area; − the actual or potential causative processes affecting the geo-system, which can determine the occurrence of movement or landslides;