2708700103 Wasserhaltung Zechau III / Haselbach I 2027, optional 2028

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The water level in the residual pit Zechau III is to be lowered to a level of +177.0 m NHN year-round by means of an existing, floating pumping station in order to ensure a maximum water level of +178.5 m NHN. In doing so, it must be ensured that the lowering rate of the water level does not exceed 1.0 cm per day. The water level in the residual pit Haselbach I is to be lowered to a level of at least +146.4 m NHN and kept below +146.9 m NHN by means of a power-independent, temporarily to be constructed and operated pumping station. Weather-related interruption of pumping operations during the winter months. In addition to pure pumping operation, the maintenance of the overall water-management system is necessary: clearing and cleaning out drainage ditches and surface waters, keeping the bank area and the pontoon facility clear. The care and management of access routes and farm/utility roads includes mulching, clearing, keeping clearance profiles free, mowing of grass. Dewatering, pumping operation

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