| 407 | 87 | 02-19-1992 | | | CODL, NB-CD, NBRR | Approves the request to establish spacing for the Niobrara Formation for certain lands previously spaced for the Codell Formation and to allow the downhole commingling of production from the Codell and Niobrara Formations. |
| 407 | 2748 | 01-28-2019 | | | NB-CD | Among others things, approves an approximate 1,280-acre drilling and spacing unit, and up to 16 horizontal wells within the unit for the production of oil, gas, and associated hydrocarbons from the Niobrara and Codell Formations. |