The hardware and consumables required for maintaining a habitable environmental are distributed about key areas aboard Deep Space 9 and service all accessible volumes.

The general Starfleet requirements for Deep Space 9 life support:

    * Environmental specifications- Environmental systems to conform SFRA-standard 104.12 for Class-M compatible oxygen-breathing personnel.

    * Environmental range- Facilities to support Class-M environmental range in all individual living quarters, provisions for 2.5% of quarters to support Class-H, K, and L environmental conditions. Transient facilities to include an additional class-B, N, and C environments.