H.Amdt.481 - An amendment numbered 4 printed in House Report 115-391 to add a new section to the Federal Power Act (FPA) to improve the hydropower licensing process. It directs the Commission and the Federal resource agencies to convene a negotiated rulemaking within 90 days of enactment with state and local government representatives, Indian tribes, and stakeholders to develop a process that will coordinate all necessary Federal authorizations and enable the Commission to make a final decision on a license not later than 3 years of receiving a completed license application.