R 323.2203 Definitions; R to W.

Rule 2203. As used in these rules: (a) "Remediation plan" means a remedial action plan approved by the department under part 115, 201, or 615, a corrective action plan prepared by the qualified consultant and certified professional under part 213, or a corrective action plan or closure plan approved by the department under part 111. (b) "Sanitary sewage" means treated or untreated wastes that contain only human metabolic wastes or wastes generated and discharged as a result of domestic or restaurant activities. (c) "Secondary containment facility" means a unit, other than the primary container in which polluting material is packaged or held, which is designed and constructed so that the polluting material cannot escape from the unit by gravity through sewers, drains, or other means directly or indirectly into a sewer system or to the waters of the state. (d) "Solum" means soil from the surface to a maximum depth of 60 inches. (e) "Standard" means an effluent or groundwater quality standard established under R 323.2222. (f) "Substance" means any of the following that may be injurious or that can be used as a parameter to determine water quality: (i) A naturally occurring or human-produced chemical. (ii) A solid, liquid, semisolid, dissolved solid or gaseous material. (iii) A virus or biological organism. (iv) A metabolite, degradation product, or waste product. (g) "Surface water" means all waters of the state excluding groundwater, but does not include drainageways and ponds used solely for wastewater conveyance, treatment, or control. (h) "Total inorganic nitrogen" means the total of ammonia plus nitrate plus nitrite expressed as nitrogen. (i) "Totals analysis" means the concentration of a substance in a medium such as soil or sediments based on the weight of the substance per dry weight of the medium and usually expressed in milligrams of the substance per kilogram dry weight of the medium. (j) "Unusable aquifer" means an aquifer that is not a usable aquifer. (k) "Usable aquifer" means an aquifer, or that portion of a formation hydraulically connected to an aquifer, that is capable of providing water in sufficient quantity and of satisfactory quality to serve 1 or more protected uses. Usable aquifers do not include aquifers from which minerals, oil, or gas is extracted or fluids are injected and regulated by part 615 or part 625 of the act, mineral wells, being §§324.62501 to 324.62518 of the Michigan Compiled Laws. (l) "Venting" means the recharging of surface water by groundwater. (m) "Unsaturated soil column" means the depth of unconsolidated material from the ground surface to the top of the highest seasonal groundwater table. (n) "Waste" means any waste, wastewater, waste effluent, or pollutant that is discharged into water, including any of the following: (i) Industrial, municipal, and agricultural waste. (ii) Dredged spoil. (iii) Solid waste. (iv) Incinerator residue. (v) Sewage. (vi) Garbage. (vii) Sewage sludge. (viii) Munitions. (ix) Chemical wastes. (x) Biological materials. (xi) Radioactive materials. (xii) Heat. (xiii) Wrecked or discarded equipment. (xiv) Rock. (xv) Sand. (xvi) Cellar dirt. (o) "Wastewater" means liquid waste discharged directly or indirectly into the waters of the state or onto the ground that results from industrial and commercial processes or municipal operations, including liquid or water- carried process waste, cooling and condensing waters, and sanitary sewage. (p) "Waters of the state" means any of the following: (i) Groundwater. (ii) Lakes, including the Great Lakes bordering the state. (iii) Rivers. (iv) Streams. (v) All other water courses and bodies of water within the jurisdiction of the state, including wetlands as defined by part 303 of the act, wetlands protection, being §§324.30301 to 324.30323 of the Michigan Compiled Laws. (q) "Well" means a properly designed and constructed hydraulic structure that permits the measurement or withdrawal of groundwater from an aquifer.