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Technical Standards for Manually Drilled Boreholes in Chad
The Ministry of Fisheries, Pastoral and Rural Hydraulics has, after consultation with national and international experts, decided to maintain standards for boreholes drilled manually to a depth between 30 and 50 metres (exceptions only allowed in exceptional hydrogeological situations and after consultation of the responsible department) as explained below.
General
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Good quality of work should be maintained al all times;
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During drilling operations sufficient safety precautions for staff and bystanders are arranged;
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Contamination of the aquifer should be prevented by all reasonable means;
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A bore-log according to the standards is maintained for all boreholes (successes and failures).
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