About Us

Long before what is today called environmental engineering, Gary Smythe learned many pollution monitoring and control activities at a chemical fertilizer manufacturing plant, while working as a cooperative-education, chemical engineering student.  His work in maintenance, production, the lab, and engineering gave him a solid foundation for understanding manufacturing processes and pollution control activities associated with them, and set the course of his career in environmental engineering.

For over thirty years, Gary has helped municipal wastewater treatment plants meet new discharge requirements, assisted chemical manufacturing facilities comply with hazardous waste, Superfund, NPDES regulatory programs, investigated and corrected soil and groundwater contaminated with organic chemicals, gasoline products, wood preserving compounds.  For several years, he managed remediation projects at several sites contaminated with one of the most toxic and difficult chemicals to treat:  dioxin.  Because many projects required liaison with federal and state regulators, as well as the public, Gary understands the need to develop and present scientifically sound and cost-effective solutions to problems in which management, environmental agencies, and the public have a keen interest.

His experience in various manufacturing industries, as well as municipalities, has enabled him to apply the education and training in chemical and environmental engineering to help clients in Pennsylvania, Alabama, Texas, Missouri, and other states.  Gary has had the opportunity to serve in corporate engineering positions and plant settings and have practiced in industries such as chemical manufacturing, wood preserving, pulp and paper manufacturing, plastics, specialty chemicals for the water treating and oil and gas production industries.  Projects have ranged from Spill Prevention, Control and Countermeasures plans to complex remediation plans to environmental site assessments to Missouri Risk-Based Corrective Action Process for Petroleum Storage Tanks.

As an independent consultant, Gary is privileged to work with other professionals in order to offer a broad range of capabilities.  Smythe Consulting, LLC has working relationships with several environmental and safety professionals, including expert engineers and scientists, environmental contracting companies, laboratories, etc.  He can assemble a project team meeting a client's needs or work as part of a client's organization and project team.  Gary is results-oriented.

Professional, Certifications & Training

  • Registered Professional Engineer: Missouri [PE-2009012208], Pennsylvania [PE026196E], Alabama [12185]
  • Missouri Certificate of Authority to offer engineering services:  E-20090154459
  • National Society of Professional Engineers
  • Missouri Society of Professional Engineers
  • OSHA 40-hour Hazardous Waste Operator Training, Standard 1910.120
  • OSHA HAZWOPER 8-hour Refresher Training, Standard 1910.120, August 2008
  • Department of Transportation, Hazardous Materials Transportation Certification, 2004
  • OSHA 501 Instructor Course In Occupational Safety & Health, Standards for General Industry, 2003
  • ASTM Environmental Site Assessments-June 2009: Phase I [E 1527-05, Transactional Screen [E 1528-06] 2009], Phase II [E1903]


Master of Engineering, Sanitary Engineering, 1978

The Pennsylvania State University, University Park, Pennsylvania

Bachelor of Science, Chemical Engineering, 1968 [Cooperative Education Program]

Mississippi State University, Mississippi State, Mississippi

Contact Information

5625 S. Farm Road 139, Springfield, MO 65810
417-689-0309 (cell)    417-887-0462 (home office)
email:  gary@smytheconsulting.com