Daniel R. Lehman has served as Director of the Office of Project Assessment since June 1991. The majority of Mr. Lehman's 30 years of Federal Service has been served within the Office of Science (formerly Energy Research). Mr. Lehman’s key responsibilities include:

• advising the Director of the Science and supporting the Office of Science (SC) programs with the construction and operation of major research facilities;
• interfacing with the DOE's other program and staff offices, including the Office of Engineering and Construction Management (Office of Management); and
• participating and representing SC in the development and implementation of policies and procedures regarding DOE corporate project management.

For the past decade, Mr. Lehman has been recognized worldwide for the development and implementation of a long-standing project peer review and evaluation procedure, which has consistently had a profound impact on DOE’s large science projects being delivered on time and on budget. Known as the “Lehman Review”, this concept has been promoted by the White House Office of Science and Technology Policy as a best practice for all Federal agencies. These reviews are conducted periodically on all large, SC construction projects and large experimental equipment under fabrication.

In support of the SC peer review process, Mr. Lehman established and maintains an extensive and unique network of world-class scientists, engineers, and management consultants. Mr. Lehman also works extensively with the community of SC Federal Project Directors and Contractor Project Managers to promote SC project management principles and to facilitate sharing of best practices and lessons learned.

Mr. Lehman has conducted hundreds of project reviews and provided project management support for many other large, SC projects including the Advanced Photon Source (APS), $800 million; the Relativistic Heavy Ion Collider (RHIC), $600 million; the Large Hadron Collider (LHC), $500 million; the Spallation Neutron Source (SNS), $1.4 billion; the Superconducting Super Collider (SSC), $11 billion; as well as non-SC projects, such as the National Ignition Facility (NIF), $3.4 billion. Mr. Lehman has lectured extensively on the lessons learned from these projects and project teams.

In February 1987, Mr. Lehman was chosen as one of the ten members of the Superconducting Super Collider Site Selection Task Force, serving as sub-committee chairperson for two of the seven selection criteria. In October 2004, Mr. Lehman served as chairperson for the Global Science Forum International Workshop on Management Practices for Establishing Large International Scientific Research Projects. The workshop was recognized as a first-of-its-kind gathering of international project management practitioners to share unique national best practices.

On September 16, 2005 Mr. Lehman was honored with a 2004 Department of Energy Presidential Rank Award.

Mr. Lehman received his B.S. in Civil Engineering with honors from the University of Maryland . He is a licensed, professional engineer and a member of the American Society of Civil Engineers.