Must secondary containment be provided for transfer operations (i.e. for a tanker truck loading or unloading fuel at a facility?
Answer – The secondary containment system should be designed to hold at the least maximum capacity of any single compartment of a tank car or tank truck loading or unloading at the facility. This is not to say that a truck must park within a diked wall for loading/unloading. The regulation allows flexibility here for diversion structures such as curbing or diking to channel a potential spill to a secondary containment structure.