What is the restriction on combustible materials in relation to stationary containers?

The correct response highlights the requirement that combustible materials must be at least 10 feet away from stationary containers. This safety regulation is in place to minimize the risk of fire hazards and potential explosions that could occur if combustible materials are allowed to be situated too closely to containers that store compressed natural gas (CNG).

Maintaining a distance of at least 10 feet provides a safety buffer, ensuring that any heat, sparks, or flames from combustible materials do not have the chance to ignite the gas. Regulatory standards often stem from protocols designed to protect both personnel and property in the vicinity of hazardous materials.

This distance plays a critical role in effective safety management and emergency response strategies within environments where CNG is utilized, thereby reinforcing a culture of safety and adherence to best practices in handling potentially dangerous substances.