1. Senior Research Engineer, Dept. of Waste Science and Technology, Luleå Univ. of Technology, SE-971 87 Luleå, Sweden (corresponding author).
2. Environmental Geotechnical Engineer, Swedish Geotechnical Institute (SGI), Universitetsallén 32, SE-851 71 Sundsvall, Sweden.
3. Professor, Dept. of Waste Science and Technology, Luleå Univ. of Technology, SE-971 87 Luleå, Sweden.
4. Associate Professor, Swedish Geotechnical Institute (SGI), Hugo Grauers gata 5B, SE-412 96 Göteborg, Sweden.
5. Senior Researcher, Swedish Geotechnical Institute (SGI), Olaus Magnus väg 35, SE-581 93 Linköping, Sweden.
6. Project Manager, Swedish Forest Agency, Hästmarksvägen 2, SE-89 138 Örnsköldsvik, Sweden.