The calculation of risk for direct routes of exposure requires knowledge and selection of a representative concentration at the point of exposure. Similarly, the Cal caution of risk for indirect routes of exposure requires the selection or calculation of representative concentration at the point of demonstration. The selection/calculation of such concentrations requires statistical evaluation of data and unparticular the Cal caution of the upper limit of the 95 percent confidence interval and the mean. Inherent in these calculations is the treatment of detection limits, duplicates, data collected at multiple points in time and the concept of exposure domain. Several of these calculations can be performed using the PROUCL software.
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Dr. Atul M. Salhotra is an internationally recognized expert in the qualitative and quantitative behavior of chemicals in the environment; assessment of human and ecological risk from chemicals; statistical analysis of data; development of environmental policies related to chemicals, and regulatory negotiations regarding contaminated sites. His expertise and opinions are sought after and trusted by regulators, industries, and the courts by virtue of his having developed risk based decision making programs for the management of chemically impacted sites for USEPA, fifteen states in US and countries outside the US.
Dr. Salhotra has conducted training courses in over 25 states and 10 countries related to the management of contaminated soil, groundwater, air, lakes and rivers. Over 7,000 individuals (practicing engineers, consultants, regulators, decision makers, and responsible parties) have attended his courses, and their careers have benefited from the training received. These courses include the fate and transport of chemicals in the environment, human and ecological risk assessment, site assessment and other aspects.
Since 1998, Dr. Salhotra has been involved in several projects in Israel. As a consultant to the Israel Ministry of Environment Water, he has developed the guidance document for the management of contaminated sites referred to as the Israel Risk Based Corrective Action Program. His clients include several Israeli consulting companies, developers, trade groups and public and private organizations.
Dr. Salhotra's applied research work has involved the development and application of exposure and risk assessment methodologies for environmental decision making. Dr. Salhotra was the project manager for the team that developed the EPACML (EPA's Composite Model for Landfills), and EPAMMM (EPA's Multi-Med Model) for landfills. The EPACML model was used to develop USEPA's Toxicity Characteristic Leaching Procedure (TCLP) rule. Dr. Salhotra has used the following tools for evaluating the leachate production, regulatory negotiations, and risk at several landfill projects:
Dr. Salhotra has been involved in various aspects related to the contamination in Kishon River, Hackensack River, and the Lower Passaic River.