1836 West 25th Street
Cleveland, Ohio 44113
FAX (216) 566-9996
has demonstrated experience in performing assessments of risks associated with
exposure to various contaminants of concern. Risk assessments are performed, as
a minimum, in accordance with the following documents: Ohio EPA Closure Plan
Review Guidance; U.S. EPA Risk Assessment Guidance for Superfund: Volume I -
Human Health Evaluation Manual, U.S. EPA Guidance for Exposure Assessment; U.S.
EPA Risk Assessment Guidance for Superfund: Volume II. Environmental Evaluation
Manual; ARARs Guidance and U.S. EPA Superfund Exposure Assessment Manual. The
Integrated Risk Information System (IRIS) and the Health Effects Assessment
Summary Tables (HEAST) are valuable resources that are used to assist in
determining the toxicities of various compounds.
The risk assessment generally consists of an identification of the hazard; a
dose-response (toxicity) assessment; an exposure assessment; a characterization
of risk based on the outputs of the exposure and toxicity assessments; and a
development of conclusions indicating the actions that would be necessary to
protect human health.
The goal of the risk assessments consist of an establishment of health-based
standards by addressing all potential routes of exposure to humans. Ultimately,
the assessments seek to document that the contaminants that are left in place in
soils will not adversely impact any environmental media, and that direct
contact, inhalation or ingestion will not result in a threat to human health.