• For the purposes of the EPA, an onshore facility is any facility of any kind located in, on, or under any land within the United States, other than submerged lands.
• An offshore facility is any facility of any kind (other than a vessel or public vessel) located in, on, or under any of the navigable waters of the United States, and any facility of any kind that is subject to the jurisdiction of the United States and is located in, on, or under any other waters.

The Environmental Protection Agency (EPA) has the authority to regulate non-transportation-related onshore and offshore facilities that could reasonably be expected to discharge oil into navigable waters of the U.S. or adjoining shorelines. Section 112.2 defines an “onshore facility” as “any facility of any kind located in, on, or under any land within the United States, other than submerged lands.” Requirements under Subparts B and C are divided based on the location of the facility and the type of operations. Sections 112.8 and 112.12 apply to all onshore facilities (excluding oil production facilities). Section 112.9 applies to all onshore oil production facilities, and section 112.10 applies to all onshore oil drilling and workover facilities. Finally, sections 112.20 and 112.21 apply to any non-transportation-related onshore facilities that, because of their location, could reasonably be expected to cause substantial harm to the environment by discharging oil into or on the navigable waters or adjoining shorelines.

“Offshore facility” means any facility of any kind (other than a vessel or public vessel) located in, on, or under any of the navigable waters of the United States, and any facility of any kind that is subject to the jurisdiction of the United States and is located in, on, or under any other waters. Section 112.11 applies to all offshore oil drilling, production, or workover facilities.

Some facilities may include both onshore and offshore components. In these instances, facilities may be considered “hybrid” facilities and subject to more than one set of requirements under Part 112. For example, an oil production facility located along a coastline that has a tank battery located onshore and associated wellheads and flowlines located offshore may be subject to the requirements of section 112.9 (for onshore oil production facilities) and section 112.11 (for offshore oil drilling, workover and production facilities).