| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 02/08/2007 | 27 | Senate Natural Resources | |
| 03/02/2007 | 40 | House Natural Resources | |
| 03/29/2007 | 59 | Conference Committee | |
| 04/03/2007 | 62 | Conference Committee | |
| 04/06/2007 | 65 | Conference Committee | |
| 04/13/2007 | 70 | Conference Committee | |
| 04/20/2007 | 75 | Conference Committee | |
| 04/20/2007 | 75 | Conference Committee |