Utah Admin. Code R317-17-2 - Definitions

As used in this rule:

(1) "Current salinity" means the maximum daily mean salinity level in Gilbert Bay observed within the past 90 days, measured and calculated following the Great Salt Lake Salinity Advisory Committee, 2020, Standard operating procedure---Great Salt Lake water density measurement and salinity calculation: Utah Geological Survey Open-File Report 728, incorporated by reference, collected from multiple United States Geological Survey monitoring locations representative of Gilbert Bay using standardized sampling methods, excluding deep brine layer and freshwater lenses.

(2) "De minimis discharge" means a discharge that results in a negligible increase in salinity concentration or load, as determined by the director.

(3) "Director" means the director of the Utah Division of Water Quality.

(4) "Discharge" means any water, substance, or pollution placed into a receiving water; which may include any combination of treated, processed, or returned waters.

(5) "Division" means the Utah Division of Water Quality.

(6) "FFSL" means the Utah Department of Natural Resources, Division of Forestry, Fire, and State Lands.

(7) "GSL" means Great Salt Lake, and includes Gilbert Bay, Gunnison Bay, Bear River Bay, Farmington Bay, and Transitional Waters, as defined in Subsection R317-2-6 (6.5).

(8) "Salinity" means the amount of dissolved salts in water expressed as grams per liter (g/L).

(9) "Salinity Advisory Committee" means an advisory committee formed and co-chaired by the division and FFSL that makes recommendations to the division and FFSL regarding the short-term and long-term management of the salinity of GSL.

(10) "UPDES" means Utah Pollutant Discharge Elimination System, as defined in Rule R317-8.

Notes

Utah Admin. Code R317-17-2

Adopted by Utah State Bulletin Number 2025-12, effective 5/28/2025