Environmental Site Assessments

Remediation Services

Tank & Container Management

G. Leston Porter, RG, CHMM


Leston Porter has over 27 years experience as a Hydrogeologist. Mr. Porter currently manages three business segments including Environmental Site Assessments, Remediation Services, and Tank and Container Management.

Leston has expertise in Phase II ESAs. Leston’s project management experience includes characterization and remediation of sites with soil and groundwater contamination and investigations at RCRA or CERCLA sites. Mr. Porter’s extensive experience includes subsurface investigations, corrective action plans, remedial activities and groundwater sampling, as well as over 45 emergency response projects. Leston has overseen remedial actions of hazardous and nonhazardous contaminated soil and groundwater for Federal, State, and Local agencies. He has experience in decommissioning regulated and non-regulated storage tanks, characterization of unknown chemicals, and coordination with disposal facilities for the proper consolidation and disposal of numerous hazardous and nonhazardous chemicals.

Registered Geologist
Certified Hazardous Materials Manager
International Fire Code Institute
UST Decommissioning
UST Removal/Closure
Well Drillers/Pump Installers Permit
OSHA 40-Hour HAZWOPER Training

Professional Affiliations 
National Groundwater Association
Gateway Society Hazardous Materials Managers

Southeast Missouri State University
B.S., Science and Technology