All bulk storage of ____ gallons and above must be labeled with the contents and a "NO SMOKING" sign.

All bulk storage of 2000 gallons and above must be labeled with the contents and a "NO SMOKING" sign due to safety regulations governing the handling and storage of propane gas. Propane is a flammable substance, and proper labeling is crucial in preventing accidents and ensuring the safety of individuals in the vicinity. The requirement for a "NO SMOKING" sign is specifically aimed at mitigating fire hazards associated with propane exposure, as smoking near flammable materials can pose severe risks of ignition. Hence, bulk storage facilities handling significant volumes of propane, such as those containing 2000 gallons or more, must adhere to these regulations to maintain a safe environment. Proper signage helps to inform personnel and visitors of the potential dangers, reinforcing safe practices in areas where propane is stored.