Gradient

Senior Scientists

Margaret C. Pollock, M.S.
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Education

M.S., Earth Science, Dartmouth College

B.S., Earth and Atmospheric Science, Georgia Institute of Technology

Expertise

  • Statistical Methods
  • Exposure Assessment
  • Database Development
  • Cost Estimation and Allocation

    Margaret C. Pollock, M.S.

    Senior Environmental Scientist

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    Margaret (Maggie) C. Pollock is an environmental scientist specializing in exposure analysis and statistical methods.  She has considerable experience quantifying exposure to chemicals in environmental media and determining appropriate cleanup levels.  She analyzes data using several statistical software packages, including SAS and Stata.  Some of her recent work includes statistical analyses of the associations between flame retardants in dust and several environmental factors.  She has also critically reviewed statistical methods used to evaluate cancer incidence in laboratory animals.  She regularly uses NHANES data to evaluate environmental exposure and health effects in the US population. 

    Education

    M.S., Earth Science, Dartmouth College

    B.S., Earth and Atmospheric Science, Georgia Institute of Technology

    Expertise

    • Statistical Methods
    • Exposure Assessment
    • Database Development
    • Cost Estimation and Allocation

      Representative Projects

      Review of Flame Retardant Levels in Dust:  Conducted a comprehensive review of the scientific literature on indoor dust levels of several flame retardants and conducted statistical analyses to determine whether levels varied by type of indoor environment.  Published summary of results in peer-reviewed journal.

      Review of Arsenic Levels in Food and Air:  Conducted a comprehensive review of the scientific literature on arsenic measurements in air and food to inform state of knowledge of arsenic exposure through inhalation and diet.  Published summary of results in peer reviewed journal.

      Statistical Analysis of Exposure Data:  Evaluated relationships between metal exposures and health outcomes using data from the National Health and Nutrition Examination Survey (NHANES).

      Database Development:  Developed database and user interface to support hazard ranking system for chemicals.  The database allows users to review hazard information and record conclusions using a well-defined set of guidelines.

      Human Health Risk Assessment:  For toxic tort litigation, evaluated cancer and non-cancer risks from potential exposure to chlorinated solvents in private well water based on monitoring and private well data, as well as individual exposure information.

      Cost Estimation:  Used probabilistic cost modeling tools to develop a total cost distribution, cash flow forecast, and expected value for a portfolio of utility sites.

      Cost Allocation:  Used information about historical operations, waste disposal practices, and site characterization data to implement a multi-party cost allocation for past and expected future costs associated with the groundwater remedy presented in the Interim Record of Decision for a site in California.

      Selected Publications

      Lewis, AS; Reid, KR; Pollock, MC; Campleman, SL.  2012. "Speciated arsenic in air: Measurement methodology and risk assessment considerations." J. Air Waste Manag. Assoc. 62 : 2-17.

      Dodge, DG; Pollock, MC; Sax, SN; Petito Boyce, C; Goodman, JE.  2011. "Risk characterization of the brominated flame retardant decabromodiphenyl ethane in indoor dust." Presented at the Society of Toxicology (SOT) 50th Annual Meeting, Washington, DC, March 6-11 Toxicologist 120 : 271.

      Dodge, DG; Pollock, MC; Petito Boyce, C; Goodman, JE.  2009. "Review of brominated and halogen-free flame retardant levels in indoor dust." J. Environ. Protect. Sci. 3 : 58-74.