Impervious surface means a surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.
Pervious surface means an area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.
Impervious area means any surface that does not allow stormwater to infiltrate into the ground.
Impervious - means not allowing the passage of water through the surface of the ground or ground covering or a substantial reduction in the capacity for water to pass through the surface of the ground or ground covering.
Regulated impervious surface means any of the following, alone or in combination:
Impervious cover means a surface composed of material that significantly impedes or prevents natural infiltration of water into soil.
Underground mining means all methods of mining other than surface mining.
Contaminated soil means soil that meets all of the following criteria:
Underground tank means a device meeting the definition of tank whose entire surface area is totally below the surface of and covered by the ground.
Soil means all unconsolidated mineral and organic material of any origin.
impermeable surface means a surface or pavement constructed and maintained to a standard sufficient to prevent the transmission of liquids beyond the pavement surface, and should be read in conjunction with the term “sealed drainage system” (below).
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;
Underground storage means storage of hazardous liquid in a subsurface stratum or formation of the earth.
storage vessel means a pressure vessel as defined in the Regulations for Pressure Vessels made under the Occupational Health and Safety Act;
Contaminate means the addition of sediment, any other pollutant or waste, or any illicit or prohibited discharge.
Constructed wetlands means areas intentionally designed and created to emulate the water quality improvement function of wetlands for the primary purpose of removing pollutants from stormwater.
Geologically hazardous areas means areas that because of their susceptibility to erosion, sliding, earthquake, or other geological events, are not suited to the siting of commercial, residential, or industrial development consistent with public health or safety concerns.
Underground area means an underground room, such as a basement, cellar, shaft or vault, providing enough space for physical inspection of the exterior of the tank situated on or above the surface of the floor.
Tank means an enclosed space which is formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.
Hazardous substance UST system means an UST system that contains a hazardous substance defined in section 101(14) of the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (but not including any substance regulated as a hazardous waste under subtitle C) or any mixture of such substances and petroleum, and which is not a petroleum UST system.
Contaminated site means a site where there is a confirmed presence, caused by man, of hazardous substances of such a level that they pose a significant risk to human health or the environment taking into account current and approved future use of the land;
Surface impoundment or "impoundment" means a facility or part of a facility which is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although it may be lined with man-made materials), which is designed to hold an accumulation of liquid wastes or wastes containing free liquids, and which is not an injection well. Examples of surface impoundments are holding, storage, settling, and aeration pits, ponds, and lagoons.
Existing Contamination means any Contamination present on, or under, the Site as of the execution date of this Contract.
Contamination means the presence of, or Release on, under, from or to the environment of any Hazardous Substance, except the routine storage and use of Hazardous Substances from time to time in the ordinary course of business, in compliance with Environmental Laws and with good commercial practice.
Excavate or "excavation" means ditching, dredging, or mechanized removal of earth, soil or rock.
Hazardous Substance Activity means any activity, event, or occurrence involving a Hazardous Substance, including, without limitation, the manufacture, possession, presence, use, generation, transportation, treatment, storage, disposal, Release, threatened Release, abatement, removal, remediation, handling of or corrective or response action to any Hazardous Substance.