 This includes the funding, organization, management, operation and disposal of waste, as well as responsibility over any other facilities required for their waste.The proposed DGR was to be located 680 metres or 2,230 feet below ground, constructed in low-permeability limestone capped by 200 meters of low-permeability shale, which had remained stable for more than 450 million years.OPG states that the limestone is stable and predictable, with excellent isolating capabilities.