Section 209.109 - Payment of penalty; compromise(a) Payment of a civil penalty may be made by certified check, money order, or credit card. Payments made by certified check or money order should be made payable to the Federal Railroad Administration and sent to DOT/FRA, Mike Monroney Aero Center, General Accounting Division, AMZ-300, P.O. Box 25082, Oklahoma City, OK 73125. Overnight express payments may be sent to DOT/FRA, Mike Monroney Aero Center, General Accounting Division, AMZ-300, 6500 South MacArthur Blvd. Headquarters Building, Room 176, Oklahoma City, OK 73169. Payment by credit card must be made via the Internet at https://www.pay.gov/paygov/. Instructions for online payment are found on the Web site.(b) At any time before an order assessing a penalty is referred to the Attorney General for collection, the respondent may offer to compromise for a specific amount by contracting the Chief Counsel.42 FR 56742, Oct. 28, 1977, as amended at 71 FR 77295 , Dec. 26, 2006