Risk Assessment of Contaminated Sites

Edmonton, Alberta /
Apr 24 - 25, 2019 /
Course Code: 09-0418-2362

  • Overview
  • Syllabus
  • Instructor
  • Location


After participating in this course, you will be able to:

  • understand the overall structure of human health and ecological risk assessment
  • develop conceptual site model and formulate the problem
  • understand fate and transport of contaminants in subsurface environment
  • determine site specific cleanup levels to reduce risks to an accepted level

In cases where concentration of contaminants in soil and groundwater exceeds the regulatory guidelines, the contaminated site may be required to be remediated. Risk management of contaminated sites can be deemed desirable when soil and groundwater remediation is costly and time consuming or site-specific guidelines are to be developed.

Risk assessment is carried out based on a conceptual site model and fate and transport of contaminants in soil and groundwater to determine the likelihood of adverse health effects resulting from exposure of receptors to contaminants.

Course Outline

  • Overview of legal framework and tired approach of environmental risk assessment
  • Overview of Environmental Site Assessment
  • Toxicity and carcinogenicity and applicable databases
  • Human health risk assessment framework
  • Conceptual Site Models (CSM) and problem formulation
  • Introduction to contaminant fate and transport modeling for exposure evaluation
  • Dose response for threshold and non-threshold contaminants
  • Risk based guidelines for remediation
  • Introduction to risk management

Who Should Attend
Environmental Engineers Scientists Consultants Industrial Staff Technicians and Technologists Regulators Reviewing and Accepting Risk Assessment and Management Applied to the Contaminated Sites

Special Features:

  • Human Health Risk Assessment guidance documents for federal contaminated sites
  • Integrated Risk Information System (IRIS) by US EPA

Required Resources:

  • Laptop/tablet and Internet Connection
  • Calculator
More Information


Daily Schedule
8:00 Registration & Coffee (Day 1 only)
8:30 Seminar begins
12:00 Lunch (provided)
4:30 Adjournment

Day I


Overview of

  • Regulatory framework
  • Concept of Sourse-Pathway-Receptor
  • Contaminants and their toxicity
  • Human Health Risk Assessment Framework
  • Development of Conceptual Site Models (CSM)
  • Risk Management

Contaminant Fate and Transport in Soil and Groundwater

  • Physical, chemical and biological processes
  • Transport mechanisms; advection, dispersion and reactions/decay
  • Introduction to simplified modeling tools

Conceptual Site Models (CSM)

  • Source-Pathway-Receptor characterization
  • Exposure pathways
  • Example CSMs

Toxicity and Carcinogenicity of Contaminants

  • Integrated Risk Information System (IRIS)
  • Threshold and non-threshold contaminants

Day II

Sampling and Analysis

  • Planning for characterization of contamination level
  • Soil sampling
  • Groundwater Sampling

Human Health Risk Assessment

  • Overview of Guidance documents
  • Planning and Scoping Process
  • Hazard Identification
  • Dose-Response Assessment
  • Exposure Assessment
  • Risk Characterization
  • Example calculations
  • Uncertainty Analysis

Introduction on remediation methods

  • In-situ and ex-situ soil remediation
  • Groundwater remediation methods
  • Risk Management approach

Risk Management Approach

  • Risk management and exposure control
  • Risk Based Cleanup Levels
  • Decision on Cleanup Levels
  • Factors affecting Risk Management

Questions and Answers and Feedback to Participants on Achievement of Learning Outcomes


Edwin Safari, Ph.D., P.Eng.

Edwin Safari, Ph.D., P.Eng.

Edwin is currently President and Chief Technical Officer (CTO) at Comnipex Corporation leading innovative projects in Geo-Environmental area focusing on modern technologies and materials for soil and groundwater remediation including nano-technology as well as waste management. He has also been Visiting Professor at GeoEngineering Research Group, Carleton University. He has 20 years of industrial and research experience in geo-environmental engineering. He has been involved in many environmental and geo-environmental engineering and research projects around the world in different areas such as environmental assessment of contaminated sites, contaminant fate and transport in porous media, soil and groundwater remediation, waste management, environmental risk assessment and environmental nanotechnology. His current research focuses on application of zero valent iron and carbon based nano-materials in in-situ and ex-situ remediation of contaminated groundwater. He has more than 15 years of experience in teaching environmental and geo-environmental engineering courses.


Radisson Hotel Edmonton South
4440 Gateway Blvd.
Edmonton, AB T6H 5C2
(780) 437-6010

Other Venue InformationPlease view discounted rates.

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Course Rating
4.3 out of 5

Overall rating of this course by its previous attendees!

Fee & Credits
  • 1.4 Continuing Education Units (CEUs)
  • 14 Professional Development Hours (PDHs)

$1595 + taxes


On-Site Training
This course can be customized and delivered to your group of staff at your facility, saving time and money.
Risk Assessment of Contaminated Sites   Winnipeg, MB | Dec 5 - 6, 2019
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