| Present | US Geological Survery, Denver |
| Start | End | Role | Com. Name |
|---|---|---|---|
| 2003 | 2005 | Member | GSN |
| 2006 | 2008 | Member | DMS |
| 2006 | 2008 | Member | PASSCAL |
| 2012 | 2014 | Member | GSN |
| 2014 | 2017 | Member | GSN |
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