David A. Heintz, Assistant Vice President, has over 20 years of experience working with regulated rates and tariffs at both the federal and state levels.  He also provides clients with analyses of natural gas projects, markets and issues.  Mr. Heintz's areas of expertise include cost of service, allocation and rate design, tariff terms and conditions, rate case preparation and regulatory issues.  Prior to joining Concentric Energy Advisors, Mr. Heintz was a Managing Consultant with Navigant Consulting, Inc. and has worked for the Federal Energy Regulatory Commission, interstate pipelines and a local distribution company.  Mr. Heintz holds an MBA from the University of Pittsburgh and a B.S. in Economics from the Pennsylvania State University.