Since 1973 the US EPA has implemented Spill Prevention, Control, and Countermeasures (SPCC) regulations governing above ground storage of petroleum product. These regulations were developed in an effort to prevent the release of petroleum product (oil spills) and are contained in 40 CFR 112.7.
Preparation of a SPCC plan is required for those facilities having an aggregate volume of petroleum storage greater than 1,320 gallons in 55-gallon containers or larger, including oil-filled transformers. The SPCC plan has a shelf-life of five years under current regulations and must be updated every five years, or whenever the petroleum storage at a facility changes.