Vapor intrusion definition

Vapor intrusion means the migration of volatile chemicals from contaminated environmental media into a building, subsurface conduit or structure.
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Vapor intrusion means the migration of volatile or semi-volatile chemicals from contaminated environmental media or product into a building, subsurface conduit or structure.
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Vapor intrusion means the migration of volatile chemicals from the subsurface into overlying buildings through subsurface soils or preferential pathways (such as underground utilities).
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Examples of Vapor intrusion in a sentence

  • Vapor intrusion occurs when chemicals volatilize and migrate from impacted soil and/or groundwater up into a building’s interior space.

  • Vapor intrusion can pose a potential health threat to the occupants of the building, especially to sensitive populations such as the elderly and children.

  • Vapor intrusion is defined as the migration of volatile contaminants from the subsurface into overlying buildings.

  • Vapor intrusion can be mitigated either during construc­ tion or as a retrofit on an existing structure.

  • This is one reason why systems and/or barriers should be designed conservatively.• Vapor intrusion measurements can be easily compli­ cated by the presence of sources of the same pollut­ ants within the structure (this is often referred to as vapor intrusion “background”).

  • Characterization and Risk Assessment Techniques Vapor intrusion is typically first evaluated with charac­ terization measurement and risk assessment techniques.

  • Secondary indica­ tors of performance may include engineering parameters such as pressure differentials and AER.Several factors influence the premitigation performance baseline to which system performance is compared, and thus should be held constant to the extent possible in system performance measurements:• Vapor intrusion is expected to be seasonally and temporally variable (influenced by weather) at most sites.

  • Vapor intrusion from remaining VOC-impacted soil and groundwater may need to be addressed in the design of on-site structures.

  • Vapor intrusion is a concern because vapors can build up to a point where the health of residents or workers in those buildings could be at risk.

  • These potential exposure scenarios include the following: ■ Ingestion, dermal contact, and inhalation (residential receptors and occupational workers); ■ Vapor intrusion to indoor air (residential and occupational receptors); ■ Volatilization to outdoor air (residential and occupational receptors); and ■ Direct contact (excavation worker).


More Definitions of Vapor intrusion

Vapor intrusion means the presence of volatile and semi-volatile organic compounds in residential or commercial buildings, assessed in accordance with Section 7.3 of the UST Corrective Action Manual, incorporated by reference in 401 KAR 42:060, resulting from contaminated subsurface media originating from a UST system release.
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Vapor intrusion means the presence of volatile and semi-volatile organic compounds in residential or commercial buildings, assessed in accordance with Section 7.3 of the UST Corrective Action Manual, incorporated by reference in 401 KAR 42:060, resulting from con- taminated subsurface media originating from a UST system release. (22 Ky.R. 427; 918; eff. 11-14-1995; 23 Ky.R. 986; eff. 3-12-1997; 29 Ky.R. 2146; 2458; eff. 4-11-2003; 32 Ky.R. 2109; 33 Ky.R. 456; 732; eff. 9-13-2006; 37 Ky.R. 2686; 38 Ky.R. 255; 510; eff. 10-6-2011; Crt eff. 10-9-2018; 45 Ky.R. 1365, 2360, 2630; eff. 4-5-2019.)
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Vapor intrusion means the presence of volatile and semi-volatile organic compounds in residential or commercial buildings, assessed in accordance with the Release Response and Ini- tial Abatement Requirements Outline, resulting from contaminated subsurface media originating from a UST system release.
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Vapor intrusion means the migration of vapors from VOCs in subsurface soil or groundwater to an enclosed space where exposure to humans may occur.
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Vapor intrusion means a process by which a hazardous substance from a vapor source has migrated or has the potential to migrate through the subsurface or preferential pathways, or both, into overlying buildings.
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Vapor intrusion means the presence of volatile and semi-volatile organic com- pounds in residential or commercial buildings, assessed in accordance with Section 7.3 of the UST Corrective Action Manual[Release Response and Initial Abatement Requirements Out- line], incorporated by reference in 401 KAR 42:060, resulting from contaminated subsurface media originating from a UST system release.[(128) "Wastewater treatment tank" means a tank that is designed to receive and treat an influent wastewater through physical, chemical, or biological methods.]
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Related to Vapor intrusion

  • Vapor tight means equipment that allows no loss of vapors. Compliance with vapor-tight requirements can be determined by checking to ensure that the concentration at a potential leak source is not equal to or greater than 100 percent of the lower explosive limit (LEL) when measured with a combustible gas detector, calibrated with propane, at a distance of 1 inch (2.54 cm) from the source.

  • Sediment means solid material, mineral or organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water or gravity as a product of erosion.

  • Wildlife habitat means a surface water of the state used by plants and animals not considered as pathogens, vectors for pathogens or intermediate hosts for pathogens for humans or domesticated livestock and plants.

  • 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.

  • Membrane filtration means a pressure or vacuum driven separation process in which particulate matter larger than one micrometer is rejected by an engineered barrier, primarily through a size exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

  • Seepage pit means an excavation deeper than it is wide that receives septic tank effluent and from which the effluent seeps from a structural internal void into the surrounding soil through the bottom and openings in the side of the pit.

  • Groundwater means all water, which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.

  • Ambient air means that portion of the atmosphere, external to buildings, to which the general public has access.

  • Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

  • Noise means two times the root mean square of ten standard deviations, each calculated from the zero responses measured at a constant frequency which is a multiple of 1,0 Hz during a period of 30 seconds.

  • Contaminated soil means soil that meets all of the following criteria:

  • Indoor or “Indoors” means within a fully enclosed and secure structure that complies with the California Building Code (CBC), as adopted by the County of Yolo, that has a complete roof enclosure supported by connecting walls extending from the ground to the roof, and a foundation, slab, or equivalent base to which the floor is securely attached. The structure must be secure against unauthorized entry, accessible only through one or more lockable doors, and constructed of solid materials that cannot easily be broken through, such as 2” x 4” or thicker studs overlain with 3/8” or thicker plywood or equivalent materials. Plastic sheeting, regardless of gauge, or similar products do not satisfy this requirement.

  • Wetlands or “wetland” means an area that is inundated or saturated by surface water or ground water at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions, commonly known as hydrophytic vegetation.

  • Vegetation means trees, shrubs, nursery stock and other vegetation and includes the limbs or growth of any Vegetation.

  • Exotic ’ means any automobile which is not a standard Rental Auto offered by most of the Rental Agencies in the province or state, or in a country without provinces or states, where the vehicle was rented or is a vehicle totally or partially custom made, hand made, hand finished or is a vehicle of limited production (under 2,000 vehicles per year by the manufacturer). Exotic automobiles include, but are not limited to the following models: Aston Martin, Bentley, Bricklin, Daimler, De Lorean, Excalibur, Ferrari, Jaguar, Jensen, Lamborghini, Lotus, Maserati, Porsche, Rolls Royce and limousines.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • 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).

  • Mold means mold, fungus, microbial contamination or pathogenic organisms.

  • Soil means all unconsolidated mineral and organic material of any origin.

  • Filtration means a process for removing particulate matter from water by passage through porous media.

  • Incineration means an engineered process involving burning or combustion of solid waste to thermally degrade waste materials at high temperatures;

  • 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.

  • Valve means a device used to control the flow of water in the irrigation system.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • Electrostatic spray means a method of applying a spray coating in which opposite electric charges are applied to the substrate and the coating. The coating is attracted to the substrate by the electrostatic potential between them.