Workshop TM1.

Understanding TPH for the management of contaminated sites

Thursday, 12 September, 2019

Presenters: Dr. Atul Salhotra


Total Petroleum hydrocarbons is a mixture of hundreds of chemicals. The behavior of these chemicals in the environment (fate and transport properties) and the toxicity of several of these chemicals is not known. This presents a significant challenge to incorporate the TPH concentrations in the evaluation of contaminated sites such as crude productions sites, gas stations, refineries, landfills, and pipeline sites. Many approximate methods have been developed that include a combination of indicator chemicals and TPH fractions.
This course will discuss the various approaches used to estimate the risk from TPH and to incorporate it in the assessment of hydrocarbon impacted sites.

Who should attend?

The workshop will be useful for all stakeholders involved in the assessment and management of petroleum impacted sites. These include regulators, responsible parties, and service providers. No previous background in risk assessment is required. Geologists, engineers and environmental professions with a variety of educational backgrounds will benefit from this course.

Detailed Course Outline & Schedule

Time Topic Presenter


  • Introduction of the trainer and attendees
Dr. Atul Salhotra

What is TPH?

  • Crude Oil
  • Refined Products
  • Composition of Refined Products
Dr. Atul Salhotra
  • Toxicity of TPH and constituents
  • Quantitative Estimate of Toxicity
  • TPH fractions
 Dr. Atul Salhotra
  • Behavior of TPH in the Environment


Dr. Atul Salhotra
10:30am Morning tea
  • Estimating risk from TPH and target levels for TPH


Dr. Atul Salhotra
  • Consideration of TPH in several regulatory programs in US (Texas, California, Massachusetts, USEPA)
Dr. Atul Salhotra
 12:30pm Closure