Final answer:
If no gas facilities are involved at a proposed excavation site, safety measures should be taken. This includes monitoring for other hazardous gases and being aware of the potential for underground mine fires. A thorough assessment of the site should be conducted.
Step-by-step explanation:
If no gas facilities are involved at a proposed excavation site, certain actions should be taken to ensure safety. One important action is to assess the presence of any other hazardous gases that may be present in the area. This can be done by monitoring for toxic gases such as carbon monoxide or hydrogen sulfide. If these gases are detected, appropriate safety measures should be implemented, such as wearing personal protective equipment or installing proper ventilation systems.
Another action that should be taken is to be aware of the potential for underground mine fires. If there is a history of underground mine fires in the area, precautions should be taken to prevent injuries or accidents. This may include avoiding the area or implementing fire prevention measures.
Overall, it is important to conduct a thorough assessment of the proposed excavation site and take appropriate actions based on the specific conditions and potential hazards present.