Significant, imminent environmental harm to land, air or water resources
Significant, imminent environmental harm to land, air or water resources means -
(a) An environmental harm is an adverse impact on land, air, or water resources which resources include, but are not limited to, plant and animal life.
(b) An environmental harm is imminent, if a condition, practice, or violation exists which -
(1) Is causing such harm; or,
(2) May reasonably be expected to cause such harm at any time before the end of the reasonable abatement time that would be set under section 521(a)(3) of the Act.
(c) An environmental harm is significant if that harm is appreciable and not immediately reparable.
30 CFR § 701.5
As used in this chapter, the following terms have the specified meanings, except where otherwise indicated: