Final answer:
The requirement for a permit for LPG containers depends on regulations by the Department of Transportation and EPA, particularly if the storage exceeds 1,320 gallons above ground or 42,000 gallons below-ground. Permits may also be affected by emissions regulations, where each year less pollution is permitted. Marketable permits allow for the buying and selling of emission rights.
Step-by-step explanation:
The number of LPG (liquefied petroleum gas) containers that require a permit for storage, use, handling, or transportation can vary depending on the regulations stipulated by various government agencies, such as the United States Department of Transportation and the Environmental Protection Agency (EPA). Permits are often based on the potential impact on safety and the environment. In the context of the Spill Prevention, Control, and Countermeasure (SPCC) rule, facilities must have a written plan if they store more than 1,320 gallons of fuel above ground or more than 42,000 gallons below ground.
Alongside storage, regulations for permits can include considerations for reducing emissions over time, where a permit might allow lesser emissions each subsequent year. Additionally, marketable permits can enable firms to buy and sell the right to emit a certain amount of pollutants, further regulating the distribution and use of LPG containers. It's important to note that local regulations and the specific quantities and use of LPG containers will ultimately determine the necessity for a permit.