((a)) ** .—** A person knowingly violating section 5104(b) or willfully or recklessly violating this chapter or a regulation, order, special permit, or approval issued under this chapter shall be fined under title 18, imprisoned for not more than 5 years, or both; except that the maximum amount of imprisonment shall be 10 years in any case in which the violation involves the release of a hazardous material that results in death or bodily injury to any person.

((b)) ** .—** For purposes of this section—

((1)) a person acts knowingly when—

((A)) the person has actual knowledge of the facts giving rise to the violation; or

((B)) a reasonable person acting in the circumstances and exercising reasonable care would have that knowledge; and

((2)) knowledge of the existence of a statutory provision, or a regulation or a requirement required by the Secretary, is not an element of an offense under this section.

((c)) ** .—** For purposes of this section, a person acts willfully when—

((1)) the person has knowledge of the facts giving rise to the violation; and

((2)) the person has knowledge that the conduct was unlawful.

((d)) ** .—** For purposes of this section, a person acts recklessly when the person displays a deliberate indifference or conscious disregard to the consequences of that person’s conduct.