Contaminated Sites

The team at Enviroscience have extensive experience in identifying and then cost-effectively mitigating the risks associated with site contamination or contaminated land.

Our practical experience extends to providing site assessment, ground investigation, and remedial design on sites potentially contaminated.   We evaluate human health issues related to environmental and occupational exposure to toxic substances. Because of the depth and breadth of our expertise, we are able to effectively respond with scientifically sound and cost-effective solutions for a diverse array of challenges facing our clients, from commercial through to government.

Our toolkit includes:

  • Comprehensive range of site investigation techniques
  • Laboratory toxicology testing
  • Reviews of environmental data.
  • Environmental Impact Assessments, Risk Assessments and Contaminated Land Assessments.
  • Design of remediation plans including materials and waste management.
  • Development of conceptual site models
  • Development of environmental standards, including site-specific standards and guidelines
  • Toxicological assessments (including evaluation of pharmacokinetic data)
  • Quantitative hazard assessment if required, including toxicological and human health risk assessments.
  • Pragmatic approach to determining mitigation measures.

Toxicology  is a branch of biology, chemistry, and medicine (more specifically pharmacology) concerned with the study of the adverse effects of chemicals on living organisms. It also studies the harmful effects of chemical, biological and physical agents in biological systems that establishes the extent of damage in living organisms. The relationship between dose and its effects on the exposed organism is of high significance in toxicology. Factors that influence chemical toxicity include the dosage (and whether it is acute or chronic); the route of exposure, the species, age, sex and environment.

Site contamination exists where chemical substances are present on or below the surface of a site and result in actual or potential harm to the health or safety of human beings or the environment that is not trivial, taking into account current or proposed land uses.

Contaminated land contains substances in or under the land that are actually or potentially hazardous to health or the environment. Areas with a long history of industrial production are known as brownfield land. Many such sites may be affected by their former uses such as mining, industry, chemical and oil spills and waste disposal.  Contamination can also occur naturally as a result of the geology of the area, or through agricultural use.

Risk assessment is the determination of quantitative or qualitative estimate of risk related to a well-defined situation and a recognized threat (also called hazard). Quantitative risk assessment requires calculations of two components of risk (R): the magnitude of the potential loss (L), and the probability (p) that the loss will occur. An acceptable risk is a risk that is understood and tolerated usually because the cost or difficulty of implementing an effective countermeasure for the associated vulnerability exceeds the expectation of loss. “Health risk assessment” includes variations, such as the type and severity of response, with or without a probabilistic context.

Site contamination exists where chemical substances are present on or below the surface of a site and result in actual or potential harm to the health or safety of human beings or the environment that is not trivial, taking into account current or proposed land uses.

Our clients