Remediation of contaminated site O76, Linz coke plant, section 1

The remediation of the contaminated site Linz coke plant covers the premises of the coke plant of Linz’s iron and steelworks. The coke plant has existed since 1942 and had been put back into service after being mostly destroyed in the Second World War. The coke plant’s site measures some 350,000 m² in size. The old site’s subsoil – divided into hot spots – is heavily contaminated by tar oil and aromatic hydrocarbons. This subsoil contamination results in significant pollutant entry into the groundwater. A contaminant plume several hundred metres in length has formed in the groundwater. Due to the fact that the old site presents a major environmental risk, it was classified as priority 1.

The remediation project’s section 1 primarily includes the excavation, transport, treatment, disposal and processing of contaminated materials originating from the specified remediation areas. Additional parts of the contract are the recirculation of treated materials, their installation and compaction in the cleaned remediation sections as well as the operation of the interim storage facilities and the bridge scale which were made available. The contract’s third major item is the delivery of concrete.