Gwaith Powdwr, situated in Penrhyndeudraeth, Wales is a decommissioned explosives works now managed as a Nature Reserve by the North Wales Wildlife Trust.

They do not apply to gaseous effluents, or to radioactive waste, mineral waste, annual carcases and agricultural waste, waste water, and decommissioned explosives where these types of waste are subject to specific Community rules Member States must prohibit the abandonment, dumping or uncontrolled disposal of waste.