HB 1147 – Immunity from civil and criminal actions. Provides immunity from both civil and criminal actions to certain companies subject to environmental regulation. Exempts companies that comply with the audit requirements from criminal liability, unless there is some intentional scheme to violate environmental regulations. Prohibits prosecutors from using the audit reports for either civil or criminal purposes if requirements for self disclosure are met. Economic damages for noncompliance discovered through methods that meet the audit requirements are generally limited to the benefits gained by the company because of its noncompliance.