| iah.org | International Association of Hydrogeologists |
| gc.ca | Environment Canada's Green Lane |
| asce.org | American Society of Civil Engineers [ASCE] |
| czc06.ca | Coastal Zone Canada Conference & Youth Forum |
| calstart.org | Clean Heavy Duty Vehicle Conference |
| battelle.org | Conference on Remediation of Chlorinated and Recalcitrant Compounds |
| aasci.org | International Conference on Environmental Science and Technology |
| wasteexpo.com | Waste Expo |
| mines.edu | International Groundwater Modeling Center |
| wgwa.org | Wisconsin Ground Water Association |
United States , Texas , San Antonio