SYNOPSIS OF CASE: TEXAS TANK CAR WORKS, INC., OWNS AND OPERATES A RAILROAD TANK CAR REPAIR AND MAINTENANCE FACILITY LOCATED IN SAN ANGELO, TX. THIS LITIGATION REPORT ALLEGES THAT TEXAS TANK CAR HAS DISCHARGED INDUSTRIAL WASTEWATER, WITHOUT AUTHORIZATION FROM THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY ( EPA ), TO THE CONCHO RIVER, A WATER OF THE UNITED STATES.