FACILITY SUBJECT TO THIS AO IS A HORSE RACETRACK OWNED AND OPERATED BY RESPONDENT (CHESTER DOWN AND MARINA, LLC). THE FACILITY INCLUDES A PRIVATELY OWNED AND OPERATED STORMWATER COLLECTION SYSTEM WITH OUTFALLS TO THE DELAWARE RIVER. DURING RAIN EVENTS, POLLUTANTS FROM HORSE WASTE ENTERS STORMWATER COLLECTION SYSTEM AND IS DISCHARGED. FACILITY DID NOT HAVE A PERMIT AT THE ITEM OF INSPECTION.