Mo. Rev. Stat. § 386.572
2. The maximum penalties for violations of federally mandated natural gas safety standards, or such stricter natural gas safety standards or rules as may be approved by the commission, shall not be greater than fifteen thousand dollars for each violation with a maximum penalty for a continuing violation or a multiple series of violations of the same standard or rule provision not to exceed one hundred fifty thousand dollars, notwithstanding any provisions of subsection 1 of section 386.570 to the contrary. The maximum penalty for each violation shall increase to twenty thousand dollars, effective January 1, 2015, twenty-five thousand dollars, effective January 1, 2025, thirty thousand dollars, effective January 1, 2035, and forty thousand dollars, effective January 1, 2040. The maximum penalty for a continuing violation or a multiple series of violations of the same standard or rule provision shall increase to two hundred thousand dollars, effective January 1, 2015, two hundred fifty thousand dollars, effective January 1, 2025, three hundred thousand dollars, effective January 1, 2035, and four hundred thousand dollars, effective January 1, 2040. In determining the amount of the penalty, the commission shall consider the nature, circumstances, and gravity of the violation, and also shall consider, with respect to the entity found to have committed the violation:
(L. 2008 H.B. 1779)