| Carson #403HZ30-039-30675 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | PermittedGas | 11,214 | Dec 8, 2011 | 0 | 0 |
| San Juan 30 4 Unit #058HHZ30-039-30681 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 8,507 | Feb 25, 2010 | 0 | 65,168 |
| Carson #408HHZ30-039-30555 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 9,633 | Mar 9, 2009 | 67 | 303,996 |
| San Juan 30 4 Unit #062HZ30-039-30159 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 8,011 | Apr 16, 2007 | 0 | 26,277 |
| San Juan 32 5 Unit #116HZ30-039-29987 | MorningStar Operating LLC | Rio ArribaBasin Fruitland Coal (Gas) | ActiveGas | 5,342 | Jul 6, 2006 | 0 | 94,169 |
| San Juan 30 4 Unit #048HZ30-039-27698 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 6,328 | Mar 1, 2006 | 0 | 35,424 |
| San Juan 30 4 Unit #05730-039-27281 | MorningStar Operating LLC | Rio ArribaBasin Fruitland Coal (Gas) | ActiveGas | 4,670 | May 10, 2004 | 0 | 2,010 |
| Carson #01230-039-27058 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,774 | May 7, 2004 | 0 | 3,435 |
| San Juan 30 4 Unit #05530-039-27280 | MorningStar Operating LLC | Rio ArribaBasin Fruitland Coal (Gas) | ActiveGas | 4,778 | Jun 26, 2003 | 0 | 3,649 |
| Carson #01030-039-26882 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,751 | Jun 19, 2002 | 0 | 4,168 |
| San Juan 30 4 Unit #034R30-039-26883 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,695 | Jun 13, 2002 | 0 | 12,503 |
| San Juan 30 4 Unit #05130-039-26654 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,790 | Apr 9, 2002 | 0 | 12,911 |
| Carson #01130-039-26881 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,720 | Feb 6, 2002 | 0 | 1,647 |
| Carson #00930-039-26606 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,755 | Oct 1, 2001 | 0 | 22,446 |
| San Juan 30 4 Unit #04930-039-26607 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,716 | Aug 6, 2001 | 0 | 10,193 |
| San Juan 30 4 Unit #042B30-039-26647 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,158 | Aug 6, 2001 | 0 | 48,147 |
| San Juan 30 4 Unit #04730-039-26316 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,750 | May 16, 2000 | 0 | 10,029 |
| San Juan 30 4 Unit #04630-039-26317 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,520 | May 16, 2000 | 0 | 8,922 |
| San Juan 30 4 Unit #04330-039-26319 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,010 | May 16, 2000 | 0 | 38,072 |
| San Juan 30 4 Unit #04430-039-26320 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 7,134 | Apr 28, 2000 | 0 | 24,494 |
| San Juan 30 4 Unit #04530-039-26330 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 7,175 | Feb 24, 2000 | 0 | 18,765 |
| Carson #00830-039-26195 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,645 | Aug 13, 1999 | 0 | 4,228 |
| Carson #00730-039-26196 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,560 | Jul 9, 1999 | 0 | 4,333 |
| Carson #006A30-039-26199 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 7,088 | Jun 14, 1999 | 0 | 10,492 |
| Carson #00530-039-26133 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,007 | Jun 4, 1999 | 0 | 22,126 |
| San Juan 30 4 Unit #042A30-039-26190 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,040 | May 20, 1999 | 0 | 24,678 |
| Carson #00630-039-26145 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,000 | May 18, 1999 | 0 | 13,580 |
| Carson #004M30-039-26169 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 8,802 | May 18, 1999 | 0 | 33,862 |
| San Juan 30 4 Unit #041M30-039-25917 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 8,855 | Jul 31, 1998 | 0 | 28,998 |
| Carson #00430-039-25914 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 7,000 | Jul 28, 1998 | 0 | 56,851 |
| Simms Com #00130-039-25555 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,530 | Jan 22, 1996 | 0 | 1,162 |
| San Juan 30 4 Unit #040HZ30-039-25538 | MorningStar Operating LLC | Rio ArribaBasin Fruitland Coal (Gas) | ActiveGas | 7,503 | Aug 21, 1995 | 0 | 36,145 |
| Burns Ranch #30030-039-24784 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,135 | May 29, 1990 | 0 | 1,685 |
| Bixler Ranch #00130-039-22786 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,310 | Aug 5, 1981 | 0 | 1,684 |
| Carson #00330-039-22286 | MorningStar Operating LLC | Rio ArribaBlanco-Mesaverde (Prorated Gas) | ActiveGas | 6,934 | Jan 15, 1980 | 0 | 23,440 |
| San Juan 30 4 Unit #03030-039-07791 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,525 | May 26, 1959 | 0 | 31,359 |
| San Juan 30 4 Unit #02330-039-07902 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,408 | Aug 21, 1958 | 0 | 5,293 |
| San Juan 30 4 Unit #02730-039-07782 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,558 | May 26, 1958 | 0 | 13,613 |
| San Juan 30 4 Unit NP #01030-039-07762 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 6,795 | — | 0 | 7,029 |
| San Juan 30 4 Unit #00330-039-07763 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,420 | — | 0 | 7,977 |
| San Juan 30 4 Unit #00430-039-07769 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,227 | — | 0 | 1,089 |
| San Juan 30 4 Unit #02030-039-07781 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,513 | — | 0 | 4,590 |
| San Juan 30 4 Unit #00830-039-07827 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,412 | — | 0 | 9,295 |
| San Juan 30 4 Unit #00130-039-07840 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,520 | — | 0 | 13,236 |
| San Juan 30 4 Unit #00530-039-07867 | MorningStar Operating LLC | Rio ArribaBlanco Pictured Cliffs, East (Gas) | ActiveGas | 4,630 | — | 0 | 9,216 |