Environmental and Social Impact Assessment - Gibe III

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Gibe III – Environmental and Social Impact Assessment 300 ENV R CS 002 C - A9003099 Secondary data on socio economic conditions of the affected weredas and kebeles were collected from wereda administration offices. Furthermore, site-specific data were collected through interviewing and discussions with local community members. 4.4 Assessment The characteristics of the foreseeable impacts have been identified considering: • the actions that may produce impact, evaluated in the description of the Gibe III Hydroelectric Project; • basic environmental data obtained from direct field observations; • information gathered from the available scientific publications and information derived by the study of similar projects. A matrix that links project activities to the environmental components, considering the impacts (both positive and negative) generated by the project activities during all the different temporal phases of the project has been proposed. In particular, in Table 4.2 a blank matrix is proposed that contains the aspect whose impact will be treated in this report, giving for each aspect considered, a different weight in terms of impact. Weights for each aspect in the different phases are the results of comparisons between the technicians that have taken part to the ESIA project. For each phase (during construction activities, and during operation stage activities), as made in studies on other project cases, the impacts are defined considering the main six activities which may have some effect on the environment: • the dam erection; • the relevant reservoir creation; • the temporary and the final roads built for the construction activities and for standard operation activities; • the Power House construction; • the temporary site camps and related facilities; • the substation construction. This matrix links environmental aspects to project activities in each project phase. Each cell of the matrix will contain the relevant value, according to the legend as determined during the Study (See Table 7.7). CESI SpA - Mid-Day International Consulting Engineers Page 73
Gibe III – Environmental and Social Impact Assessment 300 ENV R CS 002 C - A9003099 Table 4.2: Synthesis of Environment Impact Matrix Environment Component Physical Geothermal activity Seismology Hydrology Hydrogeology Water quality Global Climate: Local Landscape Biological Environment National parks and protected areas Ecologically sensitive areas Priority Forest Area Wildlife and wildlife corridor Fishery Resources Wetland Ecosystem Aquatic Ecosystem Aquatic weeds Eutrophisation Socio-Economical Environment Property residence Agricultural land Grazing land Disease ecology (malaria, etc.) Traditional community Employment opportunity Cultural Heritage Sites and monuments Local Services Migrant workers and local population Construction Stage Activity Component Operation Stage Activity Component Dam Reservoir Roads Power House Substation Site camp Dam Reservoir Roads Power House Substation Site camp Positive Impact A = Very Important B = More Important C = Important D = Fair Important E = Less Important No Impact 0 Negative Impact 1 = Very important 2 = More important 3 = Important 4 = Fair important 5 = Less important CESI SpA - Mid-Day International Consulting Engineers Page 74
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