The task includes emptying of settling tanks on properties in Hjørring Municipality covered by Hjørring Kommunes Regulation for the control and emptying of house tanks. It includes about 6,400 annual empties, as well as a smaller number of extrateries on request. For emptying, dewatering and replenishment must be carried out. At some addresses, emptying must be carried out by a smaller sludge suction vehicle and without dewatering and replenishment.

See Section II.1.4).