The commissioner may impose an administrative fine not to exceed $2,000 for each offense upon any person who violates any provision of this chapter, including any rule adopted under the provisions of this chapter. Appeals from a decision of the commissioner under this section shall be in accordance with RSA 21-O:9, V. Any administrative fine imposed under this section shall not preclude the imposition of further penalties under this chapter. The commissioner shall adopt rules, under RSA 541-A, relative to a schedule of administrative fines which may be imposed under this section for violations of this chapter as provided above.