Any term not defined in the Oklahoma Environmental Quality Code (27A O.S. §2-1-101et seq) or Title 252 of the Oklahoma Administrative Code shall be defined by:

1. (1) The Dictionary of Geological Terms, latest revised edition, American Geological Institute,
2. (2) Its generally accepted scientific meaning, or
3. (3) Its standard dictionary meaning.

Added at 28 Ok Reg 89, eff 9-17-10 (emergency)

Added at 28 Ok Reg 649, eff 7-1-11

Amended at 39 Ok Reg 1059, eff 9-15-22