The Commission may impose on a person who violates this subtitle or a regulation adopted in accordance with this subtitle a civil penalty that does not exceed the maximum penalties provided in 49 U.S.C. Chapter 601 (Hazardous Liquid Pipeline Safety Act). Each day a violation continues is a separate violation under this section. To determine the amount of a penalty imposed under this section, the Commission shall consider: the nature, circumstances, and gravity of the violation; with respect to the violator: the degree of culpability; any history of prior violations; the ability to pay; any effect on the ability to continue doing business; and good faith in attempting to comply; and other matters that justice requires.