Richard J. Hallowell, Jr., P.E., CEM
Senior Mechanical Engineer
Director of NRG Consultants

Rich holds a Bachelor of Science degree in Mechanical Engineering from Drexel University and is a registered Professional Engineer in Pennsylvania, New Jersey, New York, and Ohio.
Rich designs HVAC and mechanical systems for commercial, institutional , and industrial facilities. He brings to Dawson Engineering his vast knowledge and experience in fire investigation and expert testimony in all matters relating to mechanical systems and technology.

Russell C. Campbell, P.E.
Principal Mechanical Engineer
Campbell Engineering & Associates

Russ holds a Bachelor of Science degree in Mechanical Engineering from The College of New Jersey and is a registered Professional Engineer in Pennsylvania, New Jersey, and New York.

Russ is a specialist in HVAC and mechanical systems field engineering, investigation, testing, balancing, design and corrective design for laboratory, institutional, commercial, and industrial facilities.

Ralph C. Dumack, P.E., & P.L.S.
Senior Structural Engineer
President of Ralph C. Dumack & Associates

Ralph holds a Bachelor of Science degree in Civil Engineering from Drexel University and is a registered Professional Engineer in 14 states. Ralph is also a Licensed Land Surveyor in Pennsylvania. He has been recognized by many engineering societies for his technical contributions and accomplishments.
Ralph specializes in structure engineering. His expertise include site inspections, analysis of building and structural failures, code compliance, and expert testimony.

Heath A. Dumack, P.E., & P.L.S.
Senior Civil Engineer
Ralph C. Dumack & Associates

Heath holds both Bachelor of Science and Master of Science degrees in Civil Engineering from Drexel University and is a registered Professional Engineer in 13 states, and a Licensed Land Surveyor in Pennsylvania and Delaware.
Heath’s credentials include storm water management, subdivision planning, land surveys, topography, site development, and construction.

Detailed curriculum vitae and fee schedule available upon request.