Leadership Team

Michael Abarno, CCM

Michael Abarno, CCM

Project Manager

Michael Abarno is a Certified Construction Manager conferred by the Construction Management Association of America. He has more than 29 years of experience in the construction industry with more than 24 years spent in...
Jay Appleton, PE, CHC, CSSHO

Jay Appleton, PE, CHC, CSSHO

Project Executive

Jay Appleton joined GREYHAWK in 2015. He has more than 35 years of experience in the design and construction industry, and he leads large and diverse project teams in the development of educational and...
Ross Caldwell, CCM, LEED AP

Ross Caldwell, CCM, LEED AP

Project Executive

Ross Caldwell joined GREYHAWK in 2002. He has more than 35 years of experience in the construction industry and serves in an oversight role on multiple projects for GREYHAWK. Ross has also been involved...
Robert J. Dinan, PE, CCM, LEED AP

Robert J. Dinan, PE, CCM, LEED AP

Project Executive

Robert Dinan joined GREYHAWK in 2002. He has more than 20 years of professional construction management experience. Robert has served in a leadership role for GREYHAWK on more than $300 million of new construction,...
Grayling L. Johnson, RA, NCARB

Grayling L. Johnson, RA, NCARB

Project Executive

Grayling Johnson joined GREYHAWK in 2015. He has more than 25 years of concentrated experience in architectural design and documentation, as well as construction contract administration. He has acted in the capacity of both...
Fritz T. Marth, PE, CFCC

Fritz T. Marth, PE, CFCC

Senior Managing Consultant

Fritz Marth joined GREYHAWK in 2008. He has over 25 years of experience in the construction industry specializing in disputes and claims resolution, critical path method scheduling and delay analysis, cost damages analysis, and...
Jeffery Riggs, CCP

Jeffery Riggs, CCP

Commissioning Manager

Jeffery Riggs joined GREYHAWK in 2013. He has more than 30 years of experience specializing in the mechanical construction industry. Jeff’s specific experience includes coordination of all aspects of plumbing and mechanical piping layout...
Barrett Richards, CEP, CCC, PSP

Barrett Richards, CEP, CCC, PSP

Managing Consultant

Barrett Richards joined GREYHAWK in 2016. He has more than 15 years of experience in project management oversight; claims and litigation support; project planning and scheduling as well as pre-construction and constructing cost estimating....