[1] Tech Univ Bergakad Freiberg, Lehrstuhl Hydrogeol, D-09596 Freiberg, Germany
[2] SRK Consulting, Cardiff CF10 3BX, S Glam, Wales
[3] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[4] Commiss European Communities, IPTS, Joint Res Ctr, Seville 41092, Spain
[5] Newcastle Univ, Hydrogeochem Engn Res & Outreach HERO Grp, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[6] Univ Tartu, Inst Technol, EE-51014 Tartu, Estonia
[7] State Supervis Mines, NL-2270 AA Voorburg, Netherlands
[8] Geol Survey Slovak Republ, Spisska Nova Ves 05240, Slovakia
[9] Bundesminist Wirtschaft & Arbeit, A-1200 Vienna, Austria
[10] Minist Environm & Water, H-1011 Budapest, Hungary
[11] DIRES, Dipartimento Restauro & Conservaz Beni Architet, I-50121 Florence, Italy
[12] Newcastle Univ, Dept Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England