1. SECTION 309 OF THE CLEAN WATER ACT ( CWA ). 2. ATCH-TOP-SAN FE RR-HARDIN 900 POLK STREET AMARILLO, HARDIN COUNTY, TEXAS 79101 3. RESPONDENT WAS IN VIOLATION OF SECTION 301 OF THE CWA BY EXCEEDING THE EFFLUENT LIMITS OF ITS PERMIT. 4. RELIEF SOUGHT PURSUANT TO SECTION 309 OF THE CWA, EPA IS- SUED AN ADMINISTRATIVE ORDER (AO) ORDERING THE RESPONDENT TO COMPLY WITH THE EFFLUENT LIMITS OF ITS PERMIT.