The Noise Regulations 2005 require managers to provide health surveillance for hazards identified through risk assessment if a valid technique to monitor health is available.
Yn ôl Rheoliadau Sŵn 2005, mae gofyn i reolwyr arolygu iechyd mewn perthynas â pheryglon a nodir drwy asesiad risg, os oes techneg ddilys i fonitro iechyd ar gael.