A DEVELOPER AND ITS CONTRACTOR CONSTRUCTED THREE ARCHED CULVERTS OVER A TRIBUTARY TO HINKSON CREEK, AND DISCHARGED CONCRETE INTO THE TRIBUTARY IN THE CONSTRUCTION. RESPONDENT ALSO PLACED A CONCRETE BLANKET AROUND A RETAINING WALL AND WITHIN THE CREEK. THESE ACTIONS, DISCHARGING POLLUTANTS INTO A WATER OF THE UNITED STATES WERE PERFORMED WITHOUT A CWA 404 PERMIT, AS REQUIRED UNDER THE LAW. EPA IS REQUIRING THAT MITIGATION BE PERFORMED IN THE SAME WATERSHED AS THE PLACE OF VIOLATION. THE DEVELOPER AND CONTRACTOR WILL RESTORE ABOUT 736 FEET OF A RIPARIAN CORRIDOR BY PLANTING GRASSES, TREES AND SHRUBS.