From the extraction permits, Oasen is obliged to carry out ascent height measurements in 350 filters, divided over approximately 220 monitoring wells at locations in and around groundwater extraction areas, located in peatlands and agricultural lands (meadows). These ascent height measurements have been carried out by a contractor over the past 6 years. This agreement expires in July 2023. The delivery of the ascent height measurements and maintenance of the ascent height monitoring network for the coming years will be purchased through this tender.

ascent height measurements in 350 filters, divided over approximately 220 monitoring wells and 200 monitoring wells for groundwater quality monitoring network.