Section 02.03.01.010 - DEFINITIONSThe Idaho Department of Agriculture adopts the definitions set forth in Section 22-3401, Idaho Code, and the following definitions:
01.Aquifer. A geological unit of permeable saturated material capable of yielding economically significant quantities of water to wells and springs.02.Beneficial Uses. Current or future uses of ground water supplies including, but not limited to domestic, industrial, agricultural, aquacultural, and mining.03.Best Management Practice. A practice or combination of practices determined to be the most effective and practical means of preventing or reducing pesticide contamination to ground water and interconnected surface water from nonpoint and point sources to achieve water quality goals and protect the beneficial uses of the water.04.Constituent. Any chemical, ion, radionuclide, synthetic organic compound, microorganism, waste or other substance occurring in ground water.05.Contaminant. Any chemical, ion, radionuclide, synthetic organic compound, microorganism, waste or other substance which does not occur naturally in ground water or which naturally occurs at a lower concentration.06.Contamination. The direct or indirect introduction into ground water of any contaminant caused in whole or in part by human activities.07.Ground Water. Any water of the state which occurs beneath the surface of the earth in a saturated geological formation of rock or soil.08.Health Advisory Level. Guidance for the maximum allowable or acceptable daily concentration of a pesticide in drinking water in the absence of or prior to a MCL being set.09.Maximum Contaminant Level. Maximum allowable or acceptable daily concentration of a pesticide in drinking water that may be consumed over a lifetime.10.Pesticide Management Standard. The United States Department of Agriculture Natural Resource Conservation Service Conservation Practice Standard, Idaho Pesticide Management Code 595, or the Idaho Agricultural Pollution Abatement Plan -- Pesticide Management Standard Component Practice.11.Pesticide Use. The mixing, application, handling, transport, storage, display, distribution, and disposal of pesticides and their containers.12.Projected Future Beneficial Uses. Various uses of ground water, such as drinking water, aquaculture, industrial, mining or agriculture, that are practical and achievable in the future based on hydrogeologic conditions, water quality, future land use activities and social/economic considerations.13.Reference Dose. Allowable or acceptable dose of a pesticide in terms of mg pesticide/kg body weight that can be ingested in one day (acute reference dose) or on a daily basis over a lifetime (chronic reference dose).14.Reference Point. Numerical indicators of the toxicity of a substance based on test data and other reliable health effects information.15.Susceptibility. A method of describing the flow of water to, and through, the ground water resource based on physical factors such as hydraulic conductivity, porosity, hydraulic gradients, recharge, interactions with surface water, and transport through the unsaturated zone without considering specific natural or anthropogenic sources of contamination.16.Vulnerability. Ground water characterized by a potential for contaminants to enter and be transported within the flow system. Determinations of ground water vulnerability will include consideration of land use practices and aquifer characteristics.Idaho Admin. Code r. 02.03.01.010