Texas Natural Resources Code - NAT RES § 88.134. Penalties

(a) A person who violates any of the provisions of Sections 88.091 through 88.093 of this code, or any person who fails to comply with any of the provisions of those sections, is guilty of a misdemeanor and on conviction shall be subject to a fine of not more than $500, or by confinement in the county jail for not more than six months, or by both.

(b) A person who violates any other provision of this chapter other than those covered by Subsection (a), a person who fails to comply with any of the other terms of this chapter, a person who fails to comply with the terms of a rule or order adopted by the governmental agency under the terms of this chapter, or a person who violates any of the rules or orders of the governmental agency adopted under the provisions of this chapter on conviction is considered guilty of a felony and on conviction shall be punished by imprisonment in the Texas Department of Criminal Justice for a term of not less than two nor more than four years.