Environmental Compliance Glossary
Definitions for 50+ environmental terms used in site assessments, remediation, contaminated sites management, and regulatory compliance across Canada.
A
The reduction or elimination of environmental contamination or pollution. Abatement actions may include removing hazardous materials such as asbestos or lead paint, treating contaminated soil, or controlling emissions from industrial sources.
The quality of outdoor air in a given area, measured against established standards for pollutants such as particulate matter, ozone, and volatile organic compounds. Ambient air quality monitoring is often required near contaminated or industrial sites to assess exposure risk to nearby receptors.
An underground layer of water-bearing rock or sediment from which groundwater can be extracted. Aquifers are critical in environmental assessments because contaminant plumes can migrate through them, potentially affecting drinking water supplies.
B
An initial evaluation of a site's environmental condition before any development, industrial activity, or remediation begins. It establishes reference data for soil, groundwater, and air quality against which future changes can be measured.
A remediation technique that uses microorganisms to break down or neutralize contaminants in soil and groundwater. Bioremediation can be applied in-situ or ex-situ and is commonly used for petroleum hydrocarbons and some organic chemicals.
A previously developed property that may be contaminated by hazardous substances, pollutants, or other contaminants. Brownfield redevelopment involves assessing and remediating these sites to make them safe for new commercial, residential, or industrial use.
C
An official document issued by a regulatory authority confirming that a contaminated site has been remediated to applicable standards. In BC, certificates of compliance are issued under the Environmental Management Act and provide legal assurance that the site meets current regulatory requirements.
A documented process that tracks the collection, transfer, handling, and analysis of environmental samples. It ensures sample integrity from field collection to laboratory analysis and provides a legal record that results are reliable and defensible.
Any area where the soil, groundwater, surface water, or sediment contains hazardous substances at concentrations exceeding regulatory standards. In British Columbia, contaminated sites are managed under the Contaminated Sites Regulation (CSR) of the Environmental Management Act.
British Columbia's primary regulatory framework for identifying, assessing, and remediating contaminated sites under the Environmental Management Act. The CSR establishes numerical and risk-based standards for soil, groundwater, vapour, and sediment quality.
D
The planned shutdown and removal of industrial equipment, structures, or facilities from a site. Decommissioning includes removing hazardous materials, decontaminating equipment, and preparing the site for remediation or redevelopment.
A shipping document that accompanies hazardous waste from the point of generation to its final treatment, storage, or disposal facility. The manifest creates a paper trail ensuring that waste is properly handled throughout the transportation chain.
The process of investigating a property's environmental condition prior to a transaction such as purchase, sale, or financing. Environmental due diligence typically involves Phase 1 and Phase 2 Environmental Site Assessments to identify potential contamination liabilities.
E
A systematic evaluation of the potential environmental effects of a proposed project or development. EIAs identify impacts on air, water, soil, wildlife, and communities, and recommend mitigation measures. They are often required by federal or provincial regulators before project approval.
A comprehensive document outlining the procedures, responsibilities, and schedules for managing environmental risks and compliance obligations during a project. EMPs detail monitoring requirements, emergency response procedures, and mitigation strategies.
Phase 1 ESA: A records review and site inspection to identify potential contamination sources, with no physical sampling. Phase 2 ESA: Intrusive investigation involving soil, groundwater, and/or vapour sampling to confirm the presence and concentration of contaminants. Phase 3 ESA: Detailed delineation of contamination extent and development of a remediation strategy.
The physical removal of contaminated soil or other materials from a site for off-site disposal or treatment. Excavation is a common remediation method for localized, shallow contamination and requires careful management to prevent contaminant spreading during removal.
The route by which a contaminant travels from its source to a receptor. Exposure pathways include ingestion of contaminated water, inhalation of vapours, dermal contact with soil, and consumption of contaminated food. Identifying complete exposure pathways is essential for accurate risk assessments.
Tracking Compliance Across Multiple Sites?
NVES automates environmental workflows, document management, and regulatory tracking so you can focus on the science.
Book a DemoF
Unintentional releases of gases or vapours from pressurized equipment, storage tanks, pipelines, or other industrial sources. In environmental compliance, fugitive emissions are monitored and controlled to minimize air quality impacts and meet regulatory emission limits.
G
An undeveloped site with no prior industrial or commercial use, typically agricultural or natural land. Greenfield development carries lower contamination risk than brownfield sites, but still requires environmental assessment to establish baseline conditions.
The systematic collection and analysis of groundwater samples from monitoring wells to track contaminant levels, movement, and trends over time. It is essential for evaluating contamination plumes, verifying remediation effectiveness, and ensuring regulatory compliance.
H
Waste that poses a substantial threat to human health or the environment due to its chemical, biological, or physical properties (e.g., toxicity, flammability, corrosivity, reactivity). Hazardous waste is subject to strict regulations governing its generation, handling, transport, treatment, and disposal.
Metallic elements with high atomic weights that can be toxic at low concentrations, including lead, mercury, arsenic, cadmium, and chromium. Heavy metals are common contaminants at industrial sites and do not biodegrade, requiring physical removal or stabilization for remediation.
A measure of how easily water flows through soil or rock. Hydraulic conductivity is a key parameter in groundwater modelling and contamination assessments, as it determines how quickly contaminant plumes can migrate through subsurface materials.
I
Soil that has been affected by contamination but may or may not exceed regulatory standards. The distinction between impacted and contaminated soil is important for determining disposal requirements and whether remediation is legally required.
Treatment of contamination in place without excavating or removing the affected material. In-situ techniques include chemical oxidation, bioremediation, soil vapour extraction, and thermal treatment. These methods minimize site disturbance and are often more cost-effective for deep or widespread contamination.
Legal or administrative mechanisms that restrict land use or activities at a contaminated site to prevent exposure to remaining contamination. Examples include restrictive covenants, zoning changes, and deed notices that run with the property title.
Never Miss a Compliance Deadline
NVES tracks every permit, report, and regulatory requirement across your entire portfolio. Automated alerts keep your team ahead of deadlines.
See How It WorksL
An engineered site for the disposal of solid waste, designed with liner systems and monitoring to prevent contamination of surrounding soil and groundwater. Environmental regulations require ongoing monitoring of landfill leachate and gas emissions during operation and after closure.
Liquid that has percolated through waste material or contaminated soil, picking up dissolved or suspended contaminants. Leachate from landfills or contaminated sites can threaten groundwater quality if not properly collected and treated.
M
A formal notification to the Ministry of Environment required when contamination is discovered, soil is relocated, or other regulated environmental events occur. In BC, site owners and operators must notify the ministry within prescribed timeframes or face penalties.
A well installed specifically for the purpose of measuring groundwater levels and collecting water samples for contamination analysis. Monitoring wells are placed strategically around a site to track contaminant plume movement and to verify the effectiveness of remediation efforts.
N
A remediation approach that relies on natural processes such as biodegradation, dispersion, dilution, and chemical reactions to reduce contaminant concentrations over time. Monitored natural attenuation (MNA) requires regular sampling to confirm that natural processes are effectively reducing contamination to acceptable levels.
O
The transport and disposal of contaminated soil, groundwater, or waste materials at a licensed facility away from the source site. Off-site disposal requires waste manifests, chain of custody documentation, and compliance with transportation regulations.
Streamline Your Environmental Reporting
From sampling logs to compliance certificates, NVES keeps all your documentation organized and audit-ready.
Try Our Free ChecklistP
A formal authorization issued by a regulatory agency that allows specific activities under defined conditions, such as wastewater discharge, air emissions, or waste handling. Environmental permits specify monitoring requirements, discharge limits, and reporting obligations.
A remediation method that uses plants and their associated root-zone microorganisms to absorb, accumulate, degrade, or stabilize contaminants in soil and groundwater. Phytoremediation is a low-cost, sustainable approach suited to sites with shallow, low-level contamination.
A body of contaminated groundwater or vapour that spreads from its source in a defined pattern, influenced by groundwater flow, soil permeability, and contaminant properties. Delineating the extent of a plume is critical for designing effective remediation strategies and protecting receptors.
A group of organic chemicals consisting of two or more fused aromatic rings, commonly found in coal tar, petroleum products, and combustion byproducts. PAHs are persistent environmental contaminants and several are classified as carcinogenic, making them key analytes in contaminated site investigations.
R
Any person, organism, ecological system, or resource (such as a drinking water well) that could be adversely affected by exposure to contamination. Identifying receptors is central to risk assessments and determines the urgency and scope of remediation required.
A detailed plan outlining the strategy, methods, schedule, and monitoring requirements for cleaning up a contaminated site. The RAP is developed after site characterization and risk assessment and must be approved by the responsible regulatory authority before implementation.
The process of cleaning up or containing environmental contamination at a site to protect human health and the environment. Methods include excavation and removal, in-situ treatment, bioremediation, soil vapor extraction, and monitored natural attenuation.
An evaluation of the likelihood and severity of adverse health or environmental effects from exposure to contaminants at a site. Risk assessments consider contaminant toxicity, exposure pathways, and receptor sensitivity to determine whether contamination levels pose an acceptable or unacceptable risk.
Manage Sampling, Lab Results & Chain of Custody
NVES digitizes your entire sample lifecycle from collection to compliance reporting.
Request a DemoS
The collection of soil, water, air, vapour, or sediment specimens from a site for laboratory analysis. Proper sampling protocols-including decontamination of equipment, appropriate containers, and chain of custody-are essential for producing legally defensible results.
A comprehensive investigation to define the nature, extent, and distribution of contamination at a site, as well as the geological and hydrogeological conditions that affect contaminant behaviour. Site characterization informs remedial planning and risk assessment.
The movement of soil from one location to another, typically during construction or remediation activities. In BC, soil relocation is heavily regulated and requires sampling, characterization, and in many cases MOE notification to ensure contaminated material is not spread to clean sites.
An in-situ remediation technique that applies vacuum pressure to the vadose zone to extract volatile contaminants from soil. SVE is effective for removing volatile organic compounds (VOCs) and some fuel hydrocarbons from unsaturated soils.
The immediate actions taken to contain, control, and clean up a release of hazardous substances or pollutants. Effective spill response plans include notification procedures, containment strategies, cleanup methods, and regulatory reporting requirements.
Any individual, group, or organization with an interest in or affected by an environmental project. Stakeholders include property owners, nearby residents, Indigenous communities, regulators, environmental consultants, and contractors involved in assessment or remediation activities.
The practice of meeting current environmental, social, and economic needs without compromising the ability of future generations to meet their own. In environmental compliance, sustainability principles guide remediation method selection, waste minimization, and long-term site management strategies.
T
A standardized laboratory test used to determine whether a waste material is hazardous based on its potential to leach toxic contaminants into the environment. TCLP results are compared to regulatory thresholds to classify waste for proper handling and disposal.
V
The unsaturated zone of soil and rock between the ground surface and the water table. Contaminants in the vadose zone can migrate downward to groundwater or volatilize upward into buildings, making it a critical zone for assessment and remediation.
Carbon-based chemicals that easily evaporate at room temperature. Common VOCs in environmental contamination include benzene, toluene, ethylbenzene, and xylene (BTEX), as well as chlorinated solvents like trichloroethylene (TCE). VOCs are frequent contaminants at industrial and petroleum sites.
W
A tracking document that accompanies waste shipments from the generator to the transporter and final receiving facility. Waste manifests record the type, quantity, and handling instructions for waste, ensuring regulatory compliance and accountability throughout the disposal process.
The upper surface of the zone of saturation in soil or rock, below which all pore spaces are filled with water. The depth of the water table is a critical factor in contaminated site assessments, as it determines whether contaminants have reached groundwater and influences remediation approach selection.
Ready to Simplify Environmental Compliance?
NVES helps environmental professionals manage projects, track compliance, and generate reports in a fraction of the time.
Get Started Today