Mae'r rhaglen i ddarparu un CGD ar gyfer y GUA o Gymru, Lloegr a Gogledd Iwerddon wedi'i ariannu gan Lywodraeth y DU a bydd yn cael ei gyflenwi gan Radioactive Waste Management Ltd (RWM), is-gwmni yr Awdurdod Datgomisiynu Niwclear.
The programme to deliver a single GDF for the HAW from Wales, England and Northern Ireland is funded by the UK government and will be delivered by Radioactive Waste Management Ltd (RWM), a subsidiary of the Nuclear Decommissioning Authority.