Description
This includes hydraulic conductivity and flow porosity of backfill, seals and excavation disturbed zones.
OPA Category
Category as used in the OPA assessment
Tunnels and shafts
OPA Number
Number as used in the OPA assessment
1.03
NEA V1 IFEP Reference(s)
Related IFEPs from the NEA V1 IFEP list from 1999
2.1.08