- Colorado Ground Water Association (Sept. 2007)
- Fundamentals of Well Design (Aug. 2007)
- Douglas County Planning Commission (June 2007)
- Cherry Creek Stewardship Conference (Nov. 2006)
- AWRA Summer Specialty Conference (June 2006)
- Colorado Ground Water Association (May 2006)
- Well Stimulation Using CO2 (Feb. 2005)
- Douglas County Water Symposium (Dec. 2004)
- Geological Society of America (Nov. 2004)
- Improving the Performance of ASR Wells with CO2 (Feb. 2004)
- AWWA 2001 Annual Conference (July 2001)
