1. A violation of section 15-0501, 15-0503 or 15-0505, shall constitute a misdemeanor, punishable by a fine of not to exceed ten thousand dollars, or by imprisonment not to exceed one year or by both such fine and imprisonment and, in addition thereto, by a civil penalty of not more than five thousand dollars.

2. A subcontractor, employee or agent of such person or public corporation, or of a state department who knowingly and intentionally acts, or a prime contractor of such person, public corporation or state department who acts with or without an intention to violate the provisions of title 5 of article 15, in disregard of specifications provided in a construction contract protecting against stream damage, shall be guilty of a violation punishable by a fine of not less than twenty-five dollars, nor more than two hundred fifty dollars, or by imprisonment for not more than fifteen days, or by both such fine and imprisonment, and, in addition, thereto, by a civil penalty of not more than five thousand dollars.