Environmental and Social Management Framework for Tanzania ...

IMPACTS DURING PLANNING AND DESIGN
Most of the impacts during planning and design will relate to the laboratory design
layout to ensure spacious, easy and safe working environment for staff. The design
should allow for free, easy and safe movement of staff to work with infected material.
The layout should consider minimal movement of people (other than the laboratory
staff) in the working areas and should include adequate space for storage of
disposable and re-usable materials as well as waste. Most important, the laboratory
should be well ventilated.
Other impacts during planning and design will relate to activities for filed
investigations and surveying, during which minor destruction of trees and vegetation,
loosening of soil as well as disturbance of wildlife and micro-organisms might occur.
IMPACTS DURING CONSTRUCTION AND REHABILITATION
The impacts during construction will be typical of any building construction works and
will include the following:
1. Impacts on Soil
During construction, soil erosion will occur on construction sites as well as sites
where construction materials will be mined. Soil exposure, breaking up,
loosening, erosion and compaction will result from movement of heavy plant,
equipment and vehicles on earth roads, around materials mining sites and
around the construction sites. Loss of productive top soil will occur in areas
where construction materials will be mined and where new temporary access
roads and working areas will be opened. These impacts will be localised,
moderate and short term
Soil contamination from construction wastes (e.g. cement, paints, fuels and
lubricants) may occur during construction. Soil contamination may also arise from
accidental or deliberate disposal of construction waste and chemicals. Soil
contamination from construction wastes will be localised, minor and short term.
2. Vegetation
Trees and vegetation are likely to be removed and destroyed during clearing of
construction sites, access routes and during mining for construction materials.
Use of burnt bricks for the project is likely to contribute indirectly to deforestation.
3. Landscape and Landform
Where new laboratory structures are to be constructed, land preparation activities
will result in changes in natural ground slopes and landform. Solid wastes from
construction activities and packaging materials may contaminate the soil and
deface the landscape. These changes may affect the existing scenery, and
restrict peoples’ movement. However due to the limited nature of the construction
and rehabilitation activities, the impacts will be localised, minor and short term.
4. Impacts on Surface Water
As a result of the loosening of soils due to movement of vehicles and mining of
construction materials, sediments will be generated and will subsequently be
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