the hearing board, in an action instituted before it by the department, may assess a civil penalty upon any person for such violation or unlawful conduct. Such a penalty may be assessed whether or not the violation was willful. The civil penalty so assessed shall not exceed $10,000, plus $500 for each day of continued violation. In determining the amount of the civil penalty, the board shall consider the willfulness of the violation, damage or injury to the stream regimen and downstream areas of the Commonwealth, cost of restoration, the cost to the Commonwealth of enforcing the provisions of the act against such person, and other relevant factors. The assessment of the civil penalty shall be made after hearing, unless hearing is specifically waived by the respondent.
32 P.S. § 693.21