This workshop focused on the scientific basis for assessment of, and various types of geochemical analyses for, stray or fugitive gases. Stray gases can originate from a variety of sources and accumulate in natural and man-made spaces where dispersion and ventilation are inadequate. Gas accumulation can lead to problems where the fugitive nature of gases is a major safety concern.

Tools and strategies for investigating stray gases, along with case studies, were presented by scientists and specialists whose work has focused on the origins, migration, and accumulation of gases. The workshop presentations had emphasis on carbon dioxide and methane; the implications for safety, mitigation, and management of subsurface resources also were addressed.

(Program with Abstracts - PDF)

• Methane gas and its removal from wells in Pennsylvania
• Technical measures for the investigation and mitigation of fugitive methane hazards in areas of coal mining
• 2005 National Ground Water Association/American Petroleum Institute Petroleum Vapor Intrusion Workshop
• Example map inventory of stray gas emissions — Italy