A decompression chamber capable of recompressing the diver at the surface to a minimum of 165 fsw (6 ATA) shall be available at the dive location for:
Surface-supplied air diving to depths deeper than 100 fsw and shallower than 220 fsw;
Diving outside the no-decompression limits shallower than 300 fsw.
Mixed gas diving shallower than 300 fsw; or
A decompression chamber capable of recompressing the diver at the surface to the maximum depth of the dive shall be available at the dive location for dives deeper than 300 fsw.
A pressure gauge for each pressurized compartment designed for human occupancy;
A two-way voice communication system between occupants and a dive team member at the dive location;
A built-in-breathing-system with a minimum of one mask per occupant;
Treatment tables, treatment gas appropriate to the diving mode, and sufficient gas to conduct treatment shall be available at the dive location.
A dive team member shall be available at the dive location during and for at least one hour after the dive to operate the decompression chamber (when required or provided).