Yard piping

Yard piping means hard-piping at a well site, centralized production facility, or compressor station that is not part of a closed vent system.

Source

40 CFR § 60.5430b

Scoping language

As used in this subpart, all terms not defined herein shall have the meaning given them in the Act or in subpart A of this part; and the following terms shall have the specific meanings given them.