8/6/14 - PERMIT NUMBER AC0000425. ADMINISTRATIVE ORDER ISSUED. EXPRESS JET'S EMB-145LR AIRCRAFT REGULARLY SERVES AN AVERAGE OF AT LEAST 25 INDIVIDUALS DAILY AT LEAST 60 DAYS OF THE YEAR AND THEREFORE EXPRESS JET OWNS AND/OR OPERATES A PUBLIC WATER SYSTEM WITHIN THE MEANING OF SDWA SECTION 1401 AND IS AN AIRCRAFT WATER SYSTEM. 40 CFR 141.804 PROVIDES THAT EACH AIR CARRIER MUST DEVELOP AN OPERATIONS AND MAINTENANCE PLAN FOR EACH APWS THAT IT OWNS AND/OR OPERATES, THAT INCLUDES A COLIFORM SAMPLING PLAN IN ACCORDANCE WITH 40 CFR 141.802 AND 141.803. 40 CFR 141.803(b) REQUIRES THAT THE ROUTINE SAMPLING FREQUENCY MUST BE DETERMINED BY THE DISINFECTION AND FLUSING FREQUENCY IDENTIFIED IN THE APWS'S O&M PLAN. ACORDING TO THE INFO CONTAINED IN THE APWS'S O&M PLAN, WHICH EXPRESS JET ENTERED INTO ARCS, EXPRESS JET IS REQUIRED TO CONDUCT ROUTINE DISINFECTION AND FLUSHING OF THE SUBJECT APWS DURING THE TIMEFRAME OF APRIL THRU JUNE 2013. AFTER A REVIEW OF THE ARCS SYSTEM, EPA DETERMINED THAT NO DISINFECTION AND FLUSHING DATA HAD BEEN SUBMITTED FOR THE APR THRU JUNE MONITORING PERIOD. DURING A COMPLIANCE VISIT HELD ON APR 23, 2014, EPA ADVISED EXPRESS JET OF THE DISCREPANCY AND GAVE THE AIR CARRIER THE OPPORTUNITY TO PROVIDE ANY ADD'L INFO ON THE PERFORMANCE OF THE DISINFECTION AND FLUSHING. ON MAY 22, 2014, EXPRESS JET PROVIDED A WRITTEN RESPONSE WHICH DOCUMENTED THAT THE APR THRU JUNE 2013 DISINFECTION AND FLUSHING FOR THE SUBJECT APWS HAD NOT BEEN CONDUCTED. EXPRESS JET VIOLATED 40