S.D. Admin. R. 74:54:01:01

Current through Register Vol. 51, page 67, December 16, 2024

Section 74:54:01:01 - Definitions

Words defined in SDCL 34A-2-2 have the same meaning when used in this chapter. In addition, terms used in this chapter mean:

(1) "Ambient," the constituents or parameters and the concentration or measurements which describe water quality prior to a subsurface discharge;

(2) "CAS Number," a unique identifier assigned by the American Chemical Society to chemicals recorded in the Chemical Abstract Registry System (CAS). The CAS Number is used to conclusively identify a substance regardless of assigned name. Additional information concerning the CAS Registry System is available online at: http://www.cas.org/EO/regsys.html;

(3) "Contaminant," any physical, chemical, biological, or radiological substance or matter in water potentially harmful to human health;

(4) "Groundwater," water below the land surface that is in the zone of saturation;

(5) "EPA," the United States Environmental Protection Agency;

(6) "MFL," million fibers per liter;

(7) "mg/L," milligrams per liter;

(8) "MPN," most probable number;

(9) "mrem," "millirem," the dosage of an ionizing radiation that will cause the same biological effect as 0.001 roentgen of X-ray or gamma-ray exposure;

(10) "pH," a measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with alkalinity and decreasing with acidity;

(11) "pCi," "Picocurie," that quantity of radioactive material producing 2.22 nuclear transformations per minute;

(12) "Pollutant," dredged spoil, solid waste, incinerator residue, sewage, sewage sludge, garbage, trash, chemical waste, biological material, radioactive material, heat, wrecked or discarded equipment, rock, sand, or any industrial, municipal, or agricultural waste discharged into waters of the state;

(13) "Secretary," the secretary of the Department of Environment and Natural Resources or a representative designated to act for the secretary;

(14) "Total dissolved solids," "TDS," a term that expresses the quantity of dissolved material in a sample of water, which is determined by weighing the solid residue obtained by evaporating a measured volume of filtered sample to dryness at 356 degrees Fahrenheit.

S.D. Admin. R. 74:54:01:01

14 SDR 86, effective 12/24/1987; 18 SDR 128, effective 2/11/1992; transferred from

General Authority: SDCL 34A-2-11.

Law Implemented: SDCL 34A-2-10, 34A-2-11.