Andrea Siefers, P.E.

Andrea Siefers is a Project Engineer based in North Carolina with more than 10 years of consulting and regulatory experience focused on air quality permitting, compliance, carbon management, and greenhouse gas (GHG) management.

Andrea Siefers is a Project Engineer based in North Carolina with more than 10 years of consulting and regulatory experience focused on air quality permitting, compliance, carbon management, and greenhouse gas (GHG) management.


Andrea provides air quality consulting to clients across a wide variety of industries including chemical manufacturing, oil and gas, underground coal mining, and municipal solid waste landfills. A team-oriented consultant, Andrea collaborates with colleagues and clients towards a goal through experience, research, fast and effective learning, overcoming obstacles, and ultimately achieving high-quality solutions for complex problems.

A key contributor to Geosyntec’s Energy Transition Practice, Andrea guides clients addressing goals related to carbon reduction including developing GHG inventories, evaluating GHG reduction scenarios, and developing GHG reduction targets. Andrea is a valued member of client teams because she approaches problems thoughtfully, from multiple angles, and incorporates multiple perspectives to provide support, tools, and resources to help her clients along a path to achieve the results they want in the fast-changing field of energy transition.

She has experience managing project teams, preparing air permit applications and supporting engineering documentation, providing environmental compliance assistance and auditing services, and developing corporate sustainability initiatives. Prior to consulting, Andrea was an environmental engineer at the U.S. Environmental Protection Agency where she developed and reviewed federal air regulations for various source categories of chemical manufacturers.

Contact Andrea Siefers at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-919-424-1837.

Career Summary of Andrea Siefers, P.E.

  • Specialties: Air quality permitting and compliance, GHG inventories and management, Regulatory applicability analysis and emission quantification, Regulatory compliance assurance and auditing, Agency and permit negotiations
  • Practice Areas: Environmental Management, Air Quality Management and Air Pollution Control
  • Disciplines: Environmental Engineering
  • Education: M.S. Civil (Environmental) Engineering, Iowa State University, 2010; B.S. Materials Engineering, Iowa State University, 2008
  • Registration: North Carolina Professional Engineer, P.E. 42538; Louisiana Professional Engineer, P.E. 42833; CARB-Accredited GHG Verifier of Emissions Data Reports for Mandatory Reporting – Lead Verifier (EO# H-20-086), Nov. 2020