| 393 | 1 | 12-20-1982 | 10775 | CHALICE | JSND | Establishes 160 acre units for gas and associated hydrocarbons from "J" Sand lands in Arapahoe County. Permitted well no closer than 600 feet from Unit boundaries and no closer than 2400 feet from another well. Existing wells and locations permitted wells. |
| 535 | 803 | 06-12-2017 | 85251 | UNNAMED | NBRR | Approves Bison Oil & Gas, LLC’s request for an order to among other things: Establish one approximate 1280-acre drilling and spacing unit for the Application Lands and approve up to sixteen horizontal wells within the unit, for the production of oil, gas and associated hydrocarbons from the Niobrara Formation. |
| 535 | 913 | 01-29-2018 | 85251 | UNNAMED | NBRR | Approves Bison Exploration, LLC’s request for an order to among other things: Pool all interests in an approximate 1,280-acre drilling and spacing unit covering the Application Lands for the development and operation of the Niobrara Formation. |