Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 276 - Phosphate Manufacturing
Section NR 276.03 - Definitions
Current through November 25, 2024
The following definitions are applicable to terms used in this chapter. Definitions of other terms and meanings of abbreviations are set forth in ch. NR 205.
(1) "Phosphorus production" means the manufacture of phosphorus and ferrophosphorus by smelting phosphate ore.
(2) "Phosphorus consuming" means the manufacture from elemental phosphorus of phosphoric acid and phosphorus pentoxide, pentasulfide, trichloride, and oxychloride.
(3) "Phosphate" means the manufacture from phosphoric acid of sodium tripolyphosphate, animal feed grade calcium phosphate, and human food grade calcium phosphate.
(4) "Defluorinated phosphate rock" means the production of phosphate rock defluorinated by the use of high temperature, wet process phosphoric acid, silica, and other reagents.
(5) "Defluorinated phosphoric acid" means wet process phosphoric acid defluorinated by application of heat and other processing aids (such as vacuum and air stripping) and concentrated to 70-73% P2O5.
(6) "Sodium phosphates" means the manufacture of sodium phosphates from wet process phosphoric acid.
(7) "Within the impoundment" means;
(8) "Pond water surface area" means the water area at the average operating level for the month but not less than one third of the water area at maximum capacity.