What's needed? An Holistic Understanding of Environmental Systems
and Media |
Soil-Vapor Surveys
Ground-Water Assessment
Soil Assessment
Aquifer Characterization
Monitoring Well Installation
Geophysical Surveys
Site Reconnaissance
Risk Assessment
Contaminant Transport and Ground-Water Modeling
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IST has conducted numerous
human health and ecological risk assessments to assist our
clients with the strategic management of risk. Because the
risk-assessment process is highly interdisciplinary, IST’s
staff (composed of biologists, chemists, geologists, engineers,
and hydrogeologists) is well positioned to mechanically apply
the process and able to understand the science and mathematics
behind it. We can produce a well thought out and technically
defensible product. IST’s approach is probabilistic
and is fully supported scientifically and by the regulatory
community. Our foundation in traditional risk assessment renders
IST unique in the industry.
IST has applied risk assessment at:
- Superfund Sites
- Former Coal-Gas Plants
- Numerous Petroleum-Impacted Sites
- Refineries
- Terminals
- Underground Storage Tank Sites
Contaminants evaluated:
- Chlorinated and Non-Chlorinated Solvents
- Petroleum
- MtBE
- Radionuclides
- Metals
Sensitive receptors evaluated:
- Residences
- Commercial Buildings (with and without basements)
- Schools
- Nursing Homes
- Drinking Water Wells (both public and private)
- Streams and Wetlands
- Endangered or Protected Species
Exposure pathways evaluated:
- Ground-Water Transport
- Soil-Vapor Transport
- Separate-Phase NAPL Transport
- Indoor Air Volatilization
- Surface-Water Discharge
- Atmospheric Discharge
- Excavation
- Ingestion
- Dermal Contact
- Inhalation
- Permeation Through Floor Slabs or Basement Walls of Structures
Accurate risk characterization helps our clients make informed
decisions about strategic risk management and appropriate
next steps.
Our risk assessment experience includes federal and state
Superfund projects and risk-based assessments performed for
private industry potentially responsible party (PRP) groups.
Through this experience, we have developed a comprehensive
understanding not only of the mechanical aspects of the process
in general, but also of the fundamental tenants underlying
the risk-assessment approach.
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