A person or stationary source that knowingly violates this article after reasonable notice of the violation is guilty of a misdemeanor and may, upon conviction, be punished by imprisonment in a county jail not to exceed one year. If the violation results in, or significantly contributes to, an emergency, including a fire, the person or stationary source shall also be assessed the full cost of the county or city emergency response, as well as the cost of cleaning up and disposing of any hazardous materials.