Statistical Modeling, Fate and Transport

InControl Technologies is at the forefront of statistical modeling of environmental contamination in soil and groundwater. Modeling can be used for a variety of purposes and often depends on site-specific needs and goals. It is a popular tool for evaluating sampling uncertainty and developing site characterization programs, and works in conjunction with site investigation activities. Regulatory agencies welcome the use of statistical procedures in the development of a site characterization program and remediation strategy for a site. Our environmental professionals and statistical experts are experienced in programming analytical models to evaluate the impact of various exposure parameters, cleanup criteria, or fate and transport issues. These programs are customized for our clients and they are consistent with the requirements from federal and state agencies such as the EPA and the TCEQ.

Fate and transport are processes that occur interdependently to describe the movement and transformation of contaminants in the environment. Transport refers to how the contaminant moves through the environment across various media. Fate refers to the resulting disposition of the contaminant in the environment, such as its eventual location and chemical form (i.e., its “fate”). Using data from the subject site, InControl develops fate and transport models to provide estimations about the site such as contaminant migration and delineation. We perform “what if” analyses according to varying site-specific parameters. This process helps focus the site investigation on items that have the greatest overall impact on the site. Through the analysis of the obtained statistical information, we can ensure when the site has been delineated or has achieved applicable cleanup criteria with a known degree of confidence.

For example, InControl’s professionals can obtain fate and transport data from a site and compare it with agency requirements; this information can then be used in executing a strategy to obtain site closure

We rely on our extensive library of specialized routines and computer models when analyzing and compiling data. InControl uses scientific, statistical programming with various projects including:

  • Statistically-based sampling and analysis plans
  • Geostatistical analysis of chemical data in soil and groundwater
  • RCRA Statistical Groundwater Compliance and Detection Monitoring Programs
  • Wastewater and air permit discharge criteria
  • Development of statistically-based permit standards
  • Statistical confirmation sampling and closure criteria

When evaluating a site for contamination, we have found statistical modeling to be invaluable. Our professionally developed models and expert analyses provide critical components in understanding a site’s impact and steps to closure.