30 CFR §250.221

1. (a)You must use the DWOP process for any project that meets any of the following criteria:
   1. (1)Is planned in water depths greater than 1000 ft;
   2. (2)Will use subsea tieback development technology, regardless of water depth; or
   3. (3)Will use any new or unusual technology for any drilling, completion, workover, intervention, injection, production, pipeline, platform, decommissioning, or abandonment project.
2. (b)If you are unsure if your project will use subsea tieback development technology or new or unusual technology, contact the Regional Supervisor for guidance.