Whoever violates any provision of section 5409 of this title, or any regulation or final order issued thereunder, shall be liable to the United States for a civil penalty of not to exceed $1,000 for each such violation. Each violation of a provision of section 5409 of this title, or any regulation or order issued thereunder shall constitute, a separate violation with respect to each manufactured home or with respect to each failure or refusal to allow or perform an act required thereby, except that the maximum civil penalty may not exceed $1,000,000 for any related series of violations occurring within one year from the date of the first violation.