| Hogsback Unit T86X-20G49-035-24405 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,400 | Feb 21, 2006 | 0 | 36,887 |
| Hogsback Unit T88X-7GHHZ49-035-24409 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,300 | Feb 13, 2006 | 98 | 95,381 |
| Hogsback T42X-5G49-023-21972 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 8,300 | Mar 25, 2005 | 79 | 70,881 |
| Hogsback T87X-20G49-035-23882 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,500 | Mar 25, 2005 | 89 | 49,409 |
| Hogsback Unit T25X-30G249-035-23683 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,500 | Jul 12, 2004 | 0 | 25,666 |
| Hogsback Unit T87X-29G49-035-23522 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,550 | Mar 31, 2004 | 0 | 36,588 |
| T52X-8G49-023-21810 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 8,750 | Mar 8, 2004 | 106 | 60,093 |
| Hogsback Unit T31X-25G49-035-23520 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,500 | Mar 8, 2004 | 171 | 48,458 |
| Hogsback Unit T23X-25G49-035-23505 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,400 | Mar 2, 2004 | 154 | 56,574 |
| Hogsback Unit T78X-36S49-035-23477 | Exxon Mobil Oil Corporation | SubletteHogsback | PluggedGas Well | 10,000 | Mar 1, 2004 | 0 | 0 |
| Hogsback Unit T15X-8GN49-035-22551 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,500 | Jan 22, 2004 | 0 | 23,039 |
| Hogsback Unit T35X-6G149-023-21660 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 9,000 | Apr 23, 2003 | 0 | 290 |
| Hogsback Unit T35X-6G249-023-21667 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 8,908 | Apr 23, 2003 | 315 | 61,526 |
| Hogsback Unit T21X-25G49-035-22524 | Urban Oil & Gas Group LLC | SubletteHogsback | FLGas Well | 8,500 | Apr 21, 2003 | 131 | 52,288 |
| Hogsback Unit T64X-36S49-035-23165 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,477 | Mar 27, 2003 | 0 | 7,869 |
| Hogsback Unit T12X-32G49-035-22816 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,200 | Mar 21, 2002 | 87 | 29,929 |
| Hogsback Unit T38X-20G149-035-22527 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,300 | Mar 18, 2002 | 73 | 66,787 |
| Hogsback Unit T53X-29G49-035-22552 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,300 | Mar 18, 2002 | 0 | 26,743 |
| Hogsback Unit T58X-25G49-035-22815 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 10,800 | Mar 7, 2002 | 378 | 55,333 |
| Hogsback Unit T15X-29G49-035-22522 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,300 | Mar 4, 2002 | 161 | 37,474 |
| Hogsback Unit T38X-20G249-035-22528 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,300 | Mar 4, 2002 | 0 | 77,480 |
| Hogsback Unit T11X-7G149-035-22441 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,000 | Mar 5, 2001 | 69 | 44,116 |
| Hogsback Unit T11X-7G249-035-22367 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,000 | Jan 29, 2001 | 0 | 27,086 |
| Hogsback Unit T43X-7G149-035-22360 | Urban Oil & Gas Group LLC | SubletteHogsback | Shut inGas Well | 8,170 | Dec 27, 2000 | 0 | 18,816 |
| Hogsback Unit T43X-7G249-035-22361 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,120 | Dec 27, 2000 | 0 | 20,054 |
| Hogsback Unit T43X-7G349-035-22362 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,170 | Dec 27, 2000 | 0 | 35,351 |
| Hogsback Unit T33X-18G149-035-22225 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,930 | Jun 15, 2000 | 0 | 77,366 |
| Hogsback Unit T87X-30G149-035-22002 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,300 | May 16, 2000 | 87 | 13,017 |
| Hogsback Unit T87X-30G249-035-22003 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,350 | May 16, 2000 | 87 | 36,640 |
| Hogsback Unit T18X-31G49-035-22152 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,250 | Mar 13, 2000 | 0 | 11,503 |
| Hogsback Unit T33X-18G349-035-22153 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,900 | Mar 13, 2000 | 0 | 26,523 |
| Hogsback Unit T33X-18G249-035-22154 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,900 | Mar 13, 2000 | 0 | 152 |
| Hogsback Unit T72X-36S49-035-22110 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 9,250 | Sep 28, 1999 | 123 | 37,874 |
| Hogsback Unit T12X-8G49-023-21559 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 8,700 | Jun 10, 1999 | 0 | 16,395 |
| Hogsback Unit T84X-31G49-035-22029 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,350 | Jun 10, 1999 | 0 | 39,824 |
| Hogsback Unit T26X-12G49-035-22033 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,650 | Jun 10, 1999 | 98 | 29,388 |
| Hogsback Unit T25X-19G149-035-22005 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,500 | Apr 6, 1999 | 0 | 41,550 |
| Hogsback Unit T25X-19G249-035-22006 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,450 | Apr 6, 1999 | 0 | 11,813 |
| Hogsback Unit T85X-25G49-035-22007 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,300 | Apr 6, 1999 | 0 | 8,017 |
| Hogsback Unit T38X-13G49-035-22001 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,950 | Mar 26, 1999 | 190 | 56,555 |
| Hogsback Unit T88X-6G49-023-21546 | Urban Oil & Gas Group LLC | LincolnHogsback | ActiveGas Well | 8,500 | Feb 10, 1999 | 0 | 12,005 |
| Hogsback Unit T28X-19G49-035-21966 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,300 | Feb 10, 1999 | 356 | 82,960 |
| Hogsback Unit T68X-25G49-035-21968 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,650 | Feb 10, 1999 | 0 | 18,021 |
| Coronado 1-2149-023-21519 | Urban Oil & Gas Group LLC | LincolnHogsback | PluggedGas Well | 1,850 | Sep 22, 1998 | 0 | 0 |
| Gentle Annie 1-1249-035-21904 | Blue Spruce Operating LLC | SubletteHogsback | ActiveGas Well | 7,750 | Sep 16, 1998 | 0 | 0 |
| Hogsback Unit T38X-12G49-035-21848 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,800 | Jul 28, 1998 | 0 | 0 |
| Hogsback Unit T43X-12G49-035-21849 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 7,650 | Jul 28, 1998 | 70 | 27,167 |
| Hogsback Unit T35X-13G49-035-21851 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,000 | Jul 28, 1998 | 157 | 58,355 |
| Hogsback T36X-20G49-035-21800 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | — | Jun 15, 1998 | 0 | 21,162 |
| Hogsback Unit T18X-19G49-035-21819 | Urban Oil & Gas Group LLC | SubletteHogsback | ActiveGas Well | 8,600 | Jun 13, 1998 | 97 | 42,233 |