Accessible environment
Accessible environment means any point outside of the controlled area, including:
(1) The atmosphere (including the atmosphere above the surface area of the controlled area);
(2) Land surfaces;
(3) Surface waters;
(4) Oceans; and
(5) The lithosphere.
Source
40 CFR § 197.12
Scoping language
All definitions in subpart A of this part and the following: