From the Royal Commission's website:
The technical report Management of Earthquake Risk by Canterbury Regional Council and Christchurch City Council - Obligations and Responses under RMA was commissioned by the Commission. The purpose of the report is to investigate the manner in which issues of earthquake risk have been dealt with in the relevant planning documents of the Canterbury Regional Council (“Environment Canterbury”) and the Christchurch City Council (“the City Council”). This includes an analysis of the councils’ obligations under the Resource Management Act 1991 (“the RMA”), and the various steps that the councils have taken in carrying out those obligations.
The report is here.