Under parallel settlements seeking to resolve the criminal and civil cases, the company has agreed to pay $18 million in criminal fines. The plea agreement also includes a one-year term of probation and publishing of a public apology. The $12.1 million in civil penalty payments will be made through bankruptcy proceedings. TPC Group will also spend approximately $80 million to improve its risk management program and improve safety issues at both facilities. TPC Group has agreed to plead guilty to knowingly failing to implement its own written operating procedures, including monthly flushing of production lines, that would have prevented the explosion. Clean Air Act regulations require planning to prevent accidental releases of hazardous chemicals and makes implementation of those plans mandatory.