As used in ORS 448.268, 448.271 and 468B.150 to 468B.190:

1. (1) “Contaminant” means any chemical, ion, radionuclide, synthetic organic compound, microorganism, waste or other substance that does not occur naturally in ground water or that occurs naturally but at a lower concentration.
2. (2) “Contaminant of concern” means a contaminant present in ground water at levels which have resulted in a declaration of a ground water quality concern area or a ground water quality management area.
3. (3) “Ground water quality concern area” means an area of the state subject to a declaration under ORS 468B.175.
4. (4) “Ground water quality management area” means an area in which contaminants in the ground water have exceeded the levels established under ORS 468B.165, and the affected area is subject to a declaration under ORS 468B.180.
5. (5) “Fertilizer” has the meaning given that term in ORS 633.311.
6. (6) “Pesticide” has the meaning given that term in ORS 634.006.

Note: 468B.150 to 468B.188 were enacted into law by the Legislative Assembly but were not added to or made a part of ORS chapter 468B or any series therein by legislative action. See Preface to Oregon Revised Statutes for further explanation.

[Formerly 468.691; 1995 c.690 §7; 2001 c.914 §24; 2009 c.595 §952; 2025 c.605 §1]