Geosyntec’s Gary Wealthall, Ph.D. (Ontario), and Derek Tomlinson, P.E., P.Eng., BCEE (Pennsylvania), contributed to the creation of a series of webinars based on the LNAPL illustrated handbook. The LNAPL illustrated handbook presents best-practice guidance for the assessment and remediation of light non-aqueous phase liquids (LNAPLs) in the subsurface.

The 7 section webinar series presents best-practice guidance for the assessment and remediation of light non-aqueous phase liquids (LNAPLs) in the subsurface.  The production of the LNAPL illustrated handbook was funded by Shell Global Solutions (UK), supported by the Environment Agency and coordinated by CL:AIRE. 

Contaminated Land:  Applications in Real Environments (CL:AIRE) is an independent not-for-profit organization dedicated to raising awareness of, and confidence in, practical and sustainable remediation technologies in the United Kingdom.  Geosyntec practitioners were contributing authors to CL:AIRE's document entitled “Illustrated Handbook of LNAPL Transport and Fate in the Subsurface”, released 18 December 2014 (LNAPL illustrated handbook).

More Information

For more information and to view the webinar series, visit: Webinars for CL:AIRE
To download the LNAPL illustrated handbook: LNAPL illustrated handbook
For more information on LNAPLs, contact Dr. Gary Wealthall at This email address is being protected from spambots. You need JavaScript enabled to view it. or Derek Tomlinson at This email address is being protected from spambots. You need JavaScript enabled to view it.