Remediation of the Bonfol hazardous waste landfill, Switzerland

In the 1960s and 1970s, mainly waste from the chemical industry was deposited in a former clay pit. At the time, the landfill complied with all current regulations and permits. 25 years after its closure, the canton of Jura demanded the complete removal of the landfill.
Following a functional call for tenders with an ideas competition, the "Groupment DIB", consisting of Züblin Umwelttechnik GmbH, Züblin Spezialtiefbau GmbH and other companies, won the contract to carry out the requested measures. The coherent concept with a movable column-free hall with a span of up to 150 m and two remote-controlled crane grab systems suspended from the hall structure for waste excavation was convincing, also in terms of execution.

Special features

• The contract was awarded following a functional tender with an ideas competition

Scope of services

• Approval and implementation planning for all structures, the exhaust air technology and the entire building and safety technology as well as the excavation operation.
• Construction of the infrastructure on an area of 160,000 m² (paths, squares, railroad connection incl. all utility lines and civil engineering measures).
• Outbuildings such as the visitor center, laboratory and offices.
• Construction of interim storage, handling and loading areas as a reinforced concrete structure including all safety equipment.
• Shifting of the excavation hall (2013), dismantling (2017)