The following words and terms, when used in this subchapter, shall have the following meanings, unless the context clearly indicates otherwise.

1. (1) BOD₅--Biochemical oxygen demand (five-day).
2. (2) Benbrook Lake water quality area--The Benbrook Lake watershed except for those portions that are more than five stream miles upstream of the pool level of Benbrook Lake (694.0 feet, mean sea level).
3. (3) Benbrook Lake watershed--Benbrook Lake and its tributaries except Lake Weatherford and the tributaries above Lake Weatherford.
4. (4) Cedar Creek reservoir water quality area--Those portions of the Cedar Creek Reservoir watershed within five stream miles upstream of the pool level of Cedar Creek Reservoir (322.0 feet, mean sea level).
5. (5) Cedar Creek Reservoir watershed--Cedar Creek Reservoir and its tributaries located between Joe B. Hoggsett Dam and a point along Cedar Creek up to the normal pool elevation.
6. (6) DO--Dissolved oxygen.
7. (7) Eagle Mountain Lake water quality area--Those portions of the Eagle Mountain Lake watershed within five stream miles upstream of the pool level of Eagle Mountain Lake (649.1 feet, mean sea level).
8. (8) Eagle Mountain Lake watershed--Eagle Mountain Lake and its tributaries located between Eagle Mountain Dam and a point 0.6 kilometers downstream from the confluence of Oates Branch.
9. (9) Lake Arlington water quality area--Those portions of the Lake Arlington watershed within five stream miles upstream of the pool level of Lake Arlington (550.0 feet, mean sea level).
10. (10) Lake Arlington watershed--Lake Arlington and its tributaries located between Arlington Dam up to the normal pool elevation along Village Creek.
11. (11) Lake Bridgeport water quality area--Those portions of the Lake Bridgeport watershed within five steam miles upstream of the pool level of Lake Bridgeport (836.0 feet, mean sea level).
12. (12) Lake Bridgeport watershed--Lake Bridgeport and its tributaries located between Bridgeport Dam to a point immediately upstream from the confluence of Bear Hollow.
13. (13) Lake Worth water quality area--Those portions of the Lake Worth watershed within five stream miles upstream of the pool level of Lake Worth (594.3 feet, mean sea level).
14. (14) Lake Worth watershed--Lake Worth and its tributaries located between Lake Worth Dam and a point 4.0 kilometers downstream from Eagle Mountain Dam.
15. (15) Mg/liter--Milligram per liter.
16. (16) Oxidation pond system--Facility in which oxidation ponds are the primary process used for secondary treatment and in which the ponds have been designed and constructed in accordance with applicable design criteria.
17. (17) Richland-Chambers reservoir water quality area--Those portions of the Richland-Chambers Reservoir watershed within five stream miles upstream of the pool level of Richland-Chambers Reservoir (315.0 feet, mean sea level).
18. (18) Richland-Chambers watershed--Richland-Chambers Reservoir and its tributaries located between Richland Creek Dam and a point along Richland Creek up to the normal pool level.
19. (19) TSS--Total suspended solids.

Source Note:The provisions of this §311.61 adopted to be effective October 20, 1989, 14 TexReg 5360; amended to be effective January 8, 2015, 40 TexReg 74.