25. Provisions

The timing of the outflow of resources for the total amount of the provisions outstanding per balance sheet date is uncertain except for an amount of 2.5 million euros recorded as part of the other provisions which is expected to be settled within a two year time frame.

The decommissioning provision of 1.7 million euros relates to obligations in respect of demolition and or repair work after the use of the asset.

Perfluorooctane sulfonic acid (PFOS) contamination of the soil was detected during excavations in the context of development projects at Amsterdam Airport Schiphol. The environmental provision of 33.6 million euros concerns the expenditures to be incurred in connection with the temporary storage and decontamination and or depositing of the contaminated soil. The addition to the provision in 2018 mainly relates to the development of new aprons.

The 7.4 million euro provision for onerous contracts relates to an onerous contract regarding a future obligation to contribute land at a fixed price to a common land bank.

Included in the provisions in the category 'other' is a claim of 10.0 million euros concerning a dispute with Chipshol on the consequences of the ban on the development of the Groenenberg site in place from 19 February 2003 to 28 June 2007. It is not clear when the Amsterdam Court of Appeal will deliver a final judgement. The Management Board assumes that there is no indication to revise their assessment of the provision against Chipshol. The Management Board does not expect that the remaining amount of compensation which eventually has to be paid to Chipshol will exceed the Groenenberg site provision. Further disclosures regarding the Chipsol receivable are included in note 15. Other non-current receivables.