thickening means process of concentrating solid particles in suspension
Plastic means material which contains as an essential ingredient a high polymer, such as polyethylene terephthalate, high density polyethylene, Vinyl, low density polyethylene, polypropylene, polystyrene resins, multi-materials like acrylonitrile butadiene styrene, polyphenylene oxide, polycarbonate, polybutylene terephthalate ;
Filter means material placed in the useful beam to preferentially absorb selected radiations.
Grinding means to reduce to powder or small fragments and includes mechanical chipping or drilling.
Pipe or “Piping” means a hollow cylinder or tubular conduit that is constructed of non-earthen materials.
Diameter means the diameter of the stem of a tree measured outside the bark at a specified point of measurement.
Coating means a material applied onto or impregnated into a substrate for protective, decorative, or functional purposes. Such materials include, but are not limited to, paints, varnishes, sealers, and stains.
Casing means a pipe or tubing of appropriate material, of varying diameter and weight, lowered into a borehole during or after drilling in order to support the sides of the hole and thus prevent the walls from caving, to prevent loss of drilling mud into porous ground, or to prevent water, gas, or other fluid from entering or leaving the hole.
Pruning means the appropriate removal in accordance with good arboricultural practices of not more than one-third of the live branches or limbs of a tree or more than one-third of the live branches or limbs on a tree as part of a consistent annual pruning program;
Pile means any non-containerized accumulation of solid, nonflowing hazardous waste that is used for treatment or storage and that is not a containment building.
Blasting means changing the level or grade of land or rendering, tearing, demolishing, moving, or removing earth, rock, buildings, structures, or other masses or materials by seismic blasting or the detonation of dynamite or any other explosive agent.
Erosion means the detachment and movement of soil or rock fragments by water, wind, ice, or gravity.
Topsoil means a varying depth (up to 300 mm) of the soil profile irrespective of the fertility, appearance, structure, agricultural potential, fertility and composition of the soil;
Tube means an x-ray tube, unless otherwise specified.
Gravel means stone screened from river sand or quarried and washed free of clay and clay coatings. Concrete aggregate designated as Class II by the department of transportation is acceptable.
Eating means feeding oneself by getting food into the body from a receptacle (such as a plate, cup or table) or by a feeding tube or intravenously.
Hazing means committing an act against a student, or coercing a student into committing an act, that creates a substantial risk of harm to a person, in order for the student to be initiated into or affiliated with a student organization, or for any other purpose. The term hazing includes, but is not limited to:
Scaling as used herein, involves:
Polystyrene foam adhesive means an aerosol adhesive designed to bond polystyrene foam to substrates.
borehole means a hole sunk into the earth for the purpose of locating, abstracting or using subterranean water and includes a spring;
Density means the permitted number of dwelling units per
water meter means any apparatus for measuring or showing the volume of water supplied to, or of effluent discharged from any premises;
Adhesive means any chemical substance that is applied for the purpose of bonding two surfaces together other than by mechanical means.
Undercoating means any aerosol product designed to impart a protective, non-paint layer to the undercarriage, trunk interior, and/or firewall of motor vehicles to prevent the formation of rust or to deaden sound. “Undercoating” includes, but is not limited to, rubberized, mastic, or asphaltic products.
Stack means any point in a source designed to emit solids, liquids, or gases into the air, including a pipe or duct but not including flares.
Edge of any water means the outer edge of the water's bankfull width or, where applicable, the outer edge of the associated channel migration zone.
Laser means any device excepting a Class 1 device which can be made to produce or amplify electromagnetic radiation in the wave length range from 100 nanometres to 1 millimetre primarily by the process of controlled stimulated emission.