Okla. Admin. Code § 252:611-1-2
In addition to definitions adopted by reference, the following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Board" means the Environmental Quality Board.
"Clean Water Act" or "CWA" means the federal Water Pollution Control Act, 33 U.S.C. § 251et seq., as amended.
"Code" means the Environmental Quality Code, 27A O.S. § 2-1-101 et seq., as amended.
"CPP" means the continuing planning process documents required pursuant to this chapter and 40 CFR Part 130 .
"DEQ" and "Department" mean the Oklahoma Department of Environmental Quality.
"EPA" means the United States Environmental Protection Agency.
"Oklahoma's Water Quality Standards" or "OWQS" or "Standards" means the rules promulgated by the DEQ at OAC 252:730, which classify waters of the state, designate the uses for which the various waters of the State shall be maintained and protected and prescribe the water quality standards required to sustain designated uses.
Okla. Admin. Code § 252:611-1-2