Geosyntec’s Dariusz Chlebica, PG, LSP, and SiREM’s Jeff Roberts will speak at the Association of Environmental Health and Sciences (AEHS) 42nd Annual International Conference on Soils, Sediments, Water, and Energy in Amherst, Massachusetts. The conference, also known as AEHS East, runs from October 19 through 22, 2026.

Dariusz is a Senior Geologist based in Massachusetts with more than 10 years of experience specializing in hydrogeologic investigation, conceptual site model development, and remediation of chlorinated solvents, heavy metals, radionuclides, polychlorinated biphenyls (PCBs), and petroleum hydrocarbons in challenging settings. 

Jeff is a Senior Principal based in Ontario with more than 20 years of experience focused on environmental remediation and the development, testing, and implementation of in situ remediation technologies. He is the Operations Manager of SiREM, a division of Geosyntec.  

AEHS East is an environmental conference that brings together professionals from state and federal agencies, environmental engineering firms, consulting companies, industry, and academia to share cutting-edge research, innovative approaches, and practical insights. 

The AEHS Foundation is a nonprofit professional organization that fosters communication and cooperation among professionals who assess, clean up, and protect soil, sediment, and water. 

More Information on Environmental Assessment and Remediation 

Learn more about the event. 
Learn more about the AEHS Foundation. 
For more information on bioaugmentation, ecological risk assessments, and conceptual site models, contact Dariusz at DChlebica@Geosyntec.com.  
To learn more about our contributors, click on their names below. 

Geosyntec and SiREM Participation at AEHS East 

Successful Bioaugmentation of Chlorinated Solvents in Bedrock 
SiREM Speaker: Jeff Roberts 
SiREM Coauthors: Corey Scales, Phil Dennis, Sandra Dworatzek 
Geosyntec Coauthor: Michaye McMaster 
Date/Time: Wednesday, October 21, at 2:30 p.m. ET 

Groundwater Model Development and Calibration in a Challenging Geologic Setting to Evaluate PFAS Transport 
Geosyntec Speaker: Dariusz Chlebica 
Geosyntec Coauthors: David Adilman, Chelsea Bokman, Jennifer Arblaster, Chris Martin 
Date/Time: Wednesday, October 21, at 3:30 p.m. ET