39-7403. DEFINITIONS. As used in this chapter:

(1) "Active portion" means that part of a facility or unit that has received or is receiving wastes and that has not been closed in accordance with 40 CFR 258.60.

(2) "Agricultural wastes" means wastes generated on farms resulting from the production of agricultural products including, but not limited to, manures and carcasses of dead animals weighing each or collectively in excess of fifteen (15) pounds but do not include wastes that are classified as hazardous.

(3) "Applicant" means the owner or the operator with the owner’s written consent.

(4) "Aquifer" means a geological formation, group of formations, or a portion of a formation capable of yielding significant quantities of ground water to wells or springs.

(5) "Board" means the Idaho board of environmental quality.

(6) "Buffer zone" means that part of a facility that lies between the active portion and the property boundary.

(7) "Clean soils and clean dredge spoils" means soils and dredge spoils which are not hazardous wastes or problem wastes as defined in this section.

(8) "Commercial solid waste" means all types of solid waste generated by stores, offices, restaurants, warehouses and other nonmanufacturing activities, excluding residential and industrial wastes.

(9) "Commercial solid waste facility" means a facility owned and operated as an enterprise conducted with the intent of making a profit by any individual, association, firm, or partnership for the disposal of solid waste, but excludes a facility owned or operated by a political subdivision, state or federal agency, municipality or a facility owned or operated by any individual, association, firm or partnership exclusively for the disposal of solid waste generated by such individual, association, firm or partnership.

(10) "Construction/demolition waste" means the waste building materials, packaging and rubble resulting from construction, remodeling, repair and demolition operations on pavements, houses, commercial buildings and other structures. Such waste includes, but is not limited to, bricks, concrete, other masonry materials, soil, rock, lumber, road spoils, rebar, paving materials and tree stumps. Noninert wastes and asbestos wastes are not considered to be demolition waste for the purposes of this chapter.

(11) "Contaminate" means to allow discharge of a substance from a landfill that would cause:

(a) The concentration of that substance in the ground water to exceed the maximum contamination level (MCL) specified in 40 CFR 258.40, Idaho drinking water standards; or

(b) A statistically significant increase in the concentration of that substance in the ground water where the existing concentration of that substance exceeds the maximum contamination level specified in paragraph (a) of this subsection; or

(c) A statistically significant increase above background in the concentration of a substance which:

(i) is not specified in paragraph (a) of this subsection; and

(ii) is a result of the disposal of solid waste; and

(iii) has been determined by the department to present a substantial risk to human health or the environment in the concentrations found at the point of compliance.

(12) "County" means any county in the state of Idaho.

(13) "Cover material" means soil or other suitable material that is used to protect the active portion of the MSWLF unit.

(14) "Director" means the director of the Idaho department of environmental quality.

(15) "Existing MSWLF unit" means any municipal solid waste landfill unit that is receiving solid waste as of the applicable date specified in 40 CFR 258.1(e).

(16) "Facility" means all contiguous land and structures, buffer zones, and other appurtenances and improvements on the land used for the disposal of solid waste.

(17) "Floodplain" means the area encompassed by the one hundred (100) year flood as defined by applicable federal emergency management agency (FEMA) flood insurance maps or, if no map exists, then as defined in 40 CFR 258.11.

(18) "Ground water" means water below the land surface in a zone of saturation.

(19) "Health district" means one (1) of the seven (7) district health departments of the state of Idaho.

(20) "Holocene fault" means a fault characterized as a fracture or a zone of fractures in any material along which strata on one (1) side have been displaced with respect to that on the other side and holocene being the most recent epoch of the quaternary period, extending from the end of the pleistocene epoch to the present.

(21) "Household waste" means any solid waste, including garbage, trash and sanitary waste in septic tanks, derived from households, including single and multiple residences, hotels and motels, bunkhouses, ranger stations, crew quarters, campgrounds, picnic grounds and day use recreation areas.

(22) "Industrial solid waste" means solid waste generated by manufacturing or industrial processes that is not a hazardous waste regulated under subtitle C of RCRA. Such waste may include, but is not limited to, waste resulting from the following manufacturing processes: electric power generation; fertilizer and agricultural chemicals; food and related products and byproducts; inorganic chemicals; iron and steel manufacturing; leather and leather products; nonferrous metals manufacturing/foundries; organic chemicals; plastics and resins manufacturing; pulp and paper industry; rubber and miscellaneous plastic products; stone, glass, clay and concrete products; textile manufacturing; transportation equipment; and water treatment. This term does not include mining waste or oil and gas waste.

(23) "Inert wastes" means noncombustible, nonhazardous, nonputrescible, nonleaching solid wastes that are likely to retain their physical and chemical structure under expected conditions of disposal, including resistance to biological attack.

(24) "Landfill" means an area of land or an excavation in which wastes are placed for permanent disposal, and that is not a land application unit, surface impoundment, injection well or waste pile.

(25) "Landspreading disposal facility" or "land application unit" means a facility that applies sludges or other solid wastes onto or incorporates solid waste into the soil surface, excluding manure spreading operations, at greater than agronomic rates and soil conditioners and immobilization rates.

(26) "Lateral expansion" means a horizontal expansion of the waste boundaries of an existing MSWLF unit.

(27) "Leachate" means a liquid that has passed through or emerged from solid waste and contains soluble, suspended or miscible materials removed from such waste.

(28) "Limited purpose landfill" means a landfill that receives solid waste of limited type with known and consistent composition other than wood wastes, municipal solid waste, inert waste and construction/demolition waste.

(29) "Liquid waste" as defined in 40 CFR 258.28(c)(1).

(30) "Monofill" means a landfill which contains a specific waste whose waste stream characteristics remain unchanged over time and may include special wastes, problem wastes or other consistent characteristic wastes but do not include wastes regulated under any other applicable regulations.

(31) "Municipal solid waste landfill unit (MSWLF)" means a discrete area of land or an excavation that receives household waste, and that is not a land application unit, surface impoundment, injection well, or waste pile, as those terms are defined under 40 CFR 257.2. A MSWLF unit also may receive other types of RCRA subtitle D wastes, such as commercial solid waste, nonhazardous sludge, conditionally exempt small quantity generator waste and industrial solid waste. Such a landfill may be publicly or privately owned. A MSWLF unit may be a new MSWLF unit, an existing MSWLF unit or a lateral expansion.

(32) "New MSWLF unit" means any municipal solid waste landfill unit that has not received waste prior to October 9, 1993, or prior to October 9, 1995, if the MSWLF unit meets the conditions specified in 40 CFR 258.1(f)(1).

(33) "Open burning" means the combustion of solid waste without: (a) control of combustion air to maintain adequate temperature for efficient combustion; (b) containment of the combustion reaction in an enclosed device to provide sufficient resident time and mixing for complete combustion; and (c) control of the emission of the combustion products.

(34) "Operator" means the person(s) responsible for the overall operation of a facility or part of a facility.

(35) "Owner" means the person(s) who owns a facility or part of a facility.

(36) "Permeability" means the capacity of a material to transmit a liquid. For the purposes of this chapter permeability is expressed in terms of hydraulic conductivity of water in centimeters-per-second units of measurement.

(37) "Person" means an individual, association, firm, partnership, political subdivision, public or private corporation, state or federal agency, municipality, industry, or any other legal entity whatsoever.

(38) "Pile" or "waste pile" means any noncontainerized solid, nonflowing waste that is accumulated for treatment or storage.

(39) "Plan of operation" means the written plan developed by an owner or operator of a MSWLF unit detailing how the facility is to be operated during its active life, during closure, and throughout the post closure period.

(40) "Point of compliance" means a vertical surface located at the hydraulically downgradient intercept with the uppermost aquifer at which a release from a waste management unit measured as change in constituent values will trigger assessment monitoring. Point of compliance shall be used to define the facility design, location and frequency of ground water monitoring wells and corrective action.

(41) "Post closure" means the requirements placed upon the MSWLF unit after closure to ensure their environmental safety for a thirty (30) year period or until the site becomes stabilized in accordance with section 39-7416, Idaho Code.

(42) "Processing" means an operation conducted on solid waste to prepare it for disposal.

(43) "Qualified professional" means a licensed professional geologist or licensed professional engineer, as appropriate, holding current professional registration in compliance with applicable provisions of the Idaho Code.

(44) "RCRA" means the resource conservation and recovery act (42 U.S.C. sec. 6901 et seq.), as amended.

(45) "Run-off" means any rainwater, leachate, or other liquid that drains over land from any part of a facility.

(46) "Run-on" means any rainwater, leachate, or other liquid that drains over land onto any part of a facility.

(47) "Saturated zone" means that part of the earth’s crust in which all voids are filled with water.

(48) "Septage" means a semisolid consisting of settled sewage solids combined with varying amounts of water and dissolved materials generated from a septic tank system.

(49) "Sludge" means any solid, semisolid, or liquid waste generated from a municipal, commercial, or industrial waste water treatment plant, water supply treatment plant or air pollution control facility exclusive of the treated effluent from a waste water treatment plant.

(50) "Solid waste" means any garbage or refuse, sludge from a waste water treatment plant, water supply treatment plant, or air pollution control facility and other discarded material including solid, liquid, semisolid, or contained gaseous material resulting from industrial, commercial, mining, and agricultural operations and from community activities, but does not include solid or dissolved materials in domestic sewage, or solid or dissolved materials in irrigation return flows or industrial discharges that are point sources subject to permit under 33 U.S.C. 1342, or source, special nuclear, or byproduct material as defined in the atomic energy act of 1954, as amended (68 Stat. 923). These regulations shall not apply to the following solid wastes:

(a) Overburden, waste dumps and low-grade stockpiles from mining operations;

(b) Liquid wastes whose discharge or potential discharge is regulated under federal, state or local water pollution permits;

(c) Hazardous wastes as designated in the hazardous waste management act, chapter 44, title 39, Idaho Code;

(d) Wood waste used for ornamental, animal bedding, mulch and plant bedding and road building purposes;

(e) Agricultural wastes, limited to manures and crop residues, returned to the soils at agronomic rates;

(f) Clean soils and clean dredge spoils as otherwise regulated under section 404 of the federal clean water act (PL 95-217);

(g) Septage taken to a sewage treatment plant permitted by either the U.S. environmental protection agency or the department; and

(h) Wood debris resulting from the harvesting of timber and the disposal of which is permitted under chapter 1, title 38, Idaho Code.

(51) "Special waste" means those wastes which require special treatment or handling after it arrives at the disposal site. The term includes, but is not limited to, asbestos containing material, petroleum contaminated soils, low-level PCB containing material, low-level dioxin containing material and uncut tires.

(52) "Statistically significant" means significant as determined by ANOVA analysis of variance as applied within 40 CFR 258.53(h)(2) or as provided by 40 CFR 258.53(g)(5).

(53) "Uppermost aquifer" means the geological formation nearest the natural ground surface that is an aquifer as well as lower aquifers that are hydraulically interconnected with this aquifer within the facility’s property boundary.

(54) "Waste management unit boundary" means a vertical surface located at the hydraulically downgradient limit of the unit. This vertical surface extends down into the uppermost aquifer.

(55) "Water quality standard" means a standard set for maximum allowable contamination in surface waters and ground water as set forth in the water quality standards for waters for the state of Idaho.

(56) "Wetlands" as defined in 40 CFR 232.2(r).

(57) "Wood waste" means solid waste consisting of wood pieces or particles generated as a byproduct or waste from the manufacturing of wood products, handling and storage of raw materials and trees and stumps. This includes, but is not limited to, sawdust, chips, shavings, bark, pulp, hog fuel and log yard waste, but does not include wood pieces or particles containing chemical preservatives such as creosote, pentachlorophenol, or copper-chrome-arsenate.

Undefined terms shall be given their usual and ordinary meaning within the context of the provisions of this chapter.

History:

[39-7403, added 1992, ch. 331, sec. 1, p. 974; am. 1993, ch. 139, sec. 4, p. 345; am. 1994, ch. 75, sec. 3, p. 161; am. 1996, ch. 419, sec. 1, p. 1390; am. 2001, ch. 103, sec. 69, p. 305; am. 2007, ch. 83, sec. 8, p. 227.]