backfilling
as defined in Directive 2008/98/EC of the European Parliament and of the Council of…, Article 3 (Definitions)
17a.
‘backfilling’ means any recovery operation where suitable non-hazardous waste is used for purposes of reclamation in excavated areas or for engineering purposes in landscaping. Waste used for backfilling must substitute non-waste materials, be suitable for the aforementioned purposes, and be limited to the amount strictly necessary to achieve those purposes;