Controlled area
Controlled area means:
(1) The surface area, identified by passive institutional controls, that encompasses no more than 300 square kilometers. It must not extend farther:
(a) South than 36°40′13.6661″ north latitude, in the predominant direction of ground water flow; and
(b) Than five kilometers from the repository footprint in any other direction; and
(2) The subsurface underlying the surface area.
Source
40 CFR § 197.12
Scoping language
All definitions in subpart A of this part and the following: