| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 02/10/2011 | 27 | House Energy and Natural Resources | |
| 03/15/2011 | 46 | Senate Natural Resources | |
| 03/17/2011 | 48 | Senate Natural Resources | |
| 03/25/2011 | 54 | Senate Natural Resources |