Hazardous substances constitute a special class of toxic agents in that they pose
immediate dangers to human health via simple contact or proximity. TCAS provides
toxicological consulting and assessment services for a wide range of hazardous toxic
substances, including environmental hazards, industrial chemicals, hydrocarbons,
petroleum products, heavy metals and compounds, dioxins, pesticides and many others.
TCAS routinely collects and evaluates site data, compiles geophysical data
and historical information, identifies substances present at a site and produces
exposure assessments on behalf of clients. Such assessments establish toxic exposure
pathways, quantify toxicity with respect to adverse health effects associated with
exposures and provide reasonable estimates with respect to current and future land-use
Hazardous Substance Toxicological Reference
This section summarizes some of the substances for which TCAS has regularly
performed toxicological assessments, produced written reports and/or provided expert
testimony subsequent to being retained by defendants, plaintiffs, prosecutors, state
attorney generals, public defenders' offices and U.S. Attorneys' offices.
For purposes of quick reference, hazardous substances can be divided into five basic
groups: (1) Environmental Hazards, (2) Industrial Chemicals, (3) Hydrocarbons, (4)
Metals & Compounds and (5) Pesticides. Collectively, these groups represent
a universe of toxic synthetic and biological agents. As it is impossible to summarize them
all within the scope of this website, the table below presents an abbreviated list
of some hazardous substances for which TCAS has regularly produced toxicological
assessments and provided expert opinions and testimony over a period of more than
Click on any substance to view the corresponding entry.
- Montage of public domain thumbnail images: International Association of Fire Chiefs, Woods Hole Oceanographic Institute, et al.