| Bright & Schiff Hamman Gas Unit G-4-173045 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 12.9K | 3.55M | Feb 1999 – Apr 2026 |
| Hamman Ranch G-4-149889 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 12.3K | 1.84M | May 1994 – Apr 2026 |
| Hamman Ranch G-4-148838 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 12.1K | 1.94M | Mar 1994 – Nov 2009 |
| Hamman Ranch G-4-104274 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 11.3K | 1.96M | Jan 1993 – Apr 2026 |
| Hamman Ranch G-4-104272 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 10.8K | 3.66M | Jan 1993 – Apr 2026 |
| Hamman "A" G-4-101713 | Faulconer Energy, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 5.54K | 2.33M | Jan 1993 – Feb 2024 |
| Hamman Ranch G-4-154165 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 5.32K | 1.76M | May 1995 – Apr 2026 |
| Hamman Ranch G-4-95825 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 5.08K | 667K | Oct 1996 – Oct 2008 |
| Hamman Ranch G-4-213561 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 5K | 1.18M | Aug 2005 – Apr 2026 |
| Hamman Ranch G-4-226721 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 4.25K | 1.96M | Apr 2007 – Apr 2026 |
| Hamman Ranch G-4-218552 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 3.81K | 435K | Dec 2005 – Feb 2023 |
| No. 3 Hamman "a" Gas Unit G-4-100744 | Faulconer, Vernon E., Inc. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 3.25K | 722K | Jan 1993 – Aug 2003 |
| Hamman Ranch G-4-174294 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 3.15K | 158K | Jul 1999 – Sep 2018 |
| Hamman Ranch G-4-219887 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.87K | 735K | Mar 2006 – Apr 2026 |
| Bright & Schiff Hamman Gas Unit G-4-223692 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.51K | 920K | Mar 2006 – Nov 2019 |
| Bright & Schiff Hamman Gas Unit G-4-223264 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.31K | 1.11M | Sep 2006 – Apr 2026 |
| Johnson, Mary G-4-102977 | Huisache E & P Company, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.28K | 629K | Feb 1993 – Dec 2013 |
| Bright & Schiff Hamman Gas Unit G-4-195172 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.26K | 1.65M | May 2003 – Apr 2026 |
| Bright & Schiff Hamman Gas Unit G-4-226751 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.18K | 1.67M | Apr 2006 – Apr 2026 |
| Hamman Ranch G-4-154812 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2.15K | 750K | Oct 1995 – Apr 2026 |
| Hamman Ranch G-4-104651 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.89K | 694K | Jan 1993 – Apr 2026 |
| Bright & Schiff Hamman Gas Unit G-4-223568 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.88K | 921K | Jan 2006 – Apr 2026 |
| No. 5 Hamman "a" Gas Unit G-4-106546 | Faulconer Energy, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.81K | 454K | Jan 1993 – Feb 2024 |
| Hamman Ranch G-4-174329 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.64K | 108K | Aug 1999 – Dec 2009 |
| Hamman Ranch G-4-124551 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.11K | 982K | Jul 1997 – Apr 2026 |
| Bright & Schiff Hamman Gas Unit G-4-226019 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.05K | 439K | Mar 2007 – Oct 2019 |
| Hamman "A" G-4-100475 | Faulconer Energy, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 1.04K | 1.34M | Jan 1993 – Feb 2024 |
| Hamman Ranch G-4-124158 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 954 | 88.4K | Aug 1996 – Apr 2026 |
| Hamman Ranch G-4-175491 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 793 | 1.43M | Nov 1999 – Apr 2026 |
| Hamman "a-3" GU G-4-242087 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 715 | 956K | Sep 2008 – Apr 2026 |
| Hamman Ranch G-4-176321 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 671 | 1.05M | Feb 2000 – Apr 2026 |
| Bright & Schiff Hamman G.U. G-4-92150 | El Paso E & P Company, L. P. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 545 | 94.5K | Jan 1993 – Dec 2007 |
| Hamman "A" G-4-95559 | Faulconer, Vernon E., Inc. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 480 | 463K | Jan 1993 – Nov 2014 |
| No. 6 Hamman "a" Gas Unit G-4-114390 | Faulconer Energy, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 433 | 987K | Jan 1993 – Feb 2024 |
| Hamman Ranch G-4-175490 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 406 | 821K | Jan 2000 – Jan 2010 |
| Hamman Ranch G-4-225606 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 237 | 189K | Mar 2006 – Nov 2006 |
| Hamman Ranch G-4-172208 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 229 | 805K | Jan 1999 – Oct 2003 |
| No. 1 Hamman "B" Gas Unit G-4-103224 | Faulconer, Vernon E., Inc. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 219 | 94.8K | Jan 1993 – Mar 2013 |
| Hamman Ranch G-4-176976 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 202 | 214K | Mar 2000 – May 2024 |
| Johnson -A- G-4-108094 | El Paso E & P Company, L. P. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 161 | 64.2K | Jan 1993 – Mar 1999 |
| Cook-Clemons Gas Unit G-4-232652 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 92 | 171K | Sep 2007 – Feb 2008 |
| Johnson, Mary G-4-110751 | Cal-Tex Exploratn & Prod Co LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 88 | 142K | Jan 1993 – Apr 2023 |
| Bright a Schiff Hamman G.U. G-4-100126 | Cantera Operating, LLC only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 78 | 71.9K | Aug 1996 – Dec 1997 |
| Bright & Schiff Hamman G. U. G-4-100945 | El Paso E & P Company, L. P. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 65 | 189K | Sep 1996 – Feb 2007 |
| No. 2 Hamman "B" Gas Unit G-4-103904 | Faulconer, Vernon E., Inc. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 24 | 67K | Jan 1993 – Jul 2014 |
| Hamman Ranch G-4-166716 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 4 | 87.9K | Feb 1997 – Apr 2026 |
| Bright & Schiff Hamman Gas Unit G-4-175567 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 2 | 746K | Dec 1999 – Sep 2009 |
| Bright & Schiff Hamman Gas Unit G-4-121008 | El Paso E & P Company, L. P. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 0 | 23K | Oct 1996 – Jan 1999 |
| Hamman Ranch G-4-227363 | Merit Energy Company only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 0 | 1.6K | Feb 2007 – Feb 2007 |
| Hamman Ranch G-4-154994 | El Paso E & P Company, L. P. only | Monte Christo (VX-Eckart-EE CNS) | Hidalgo | 1 | 0 | 0 | — |