Contaminants of Emerging Concern
Contaminant Screening Criteria and Prioritization Development Task Group

Toxicity and exposure criteria are being developed to from Nominated Chemicals to Level one Evaluation, to Level two Toxicity Screening and Level two Exposure screening, to Level three prioritize qualifed chemicals, to Level four Chemical Review and Level four Exposure Assessment, to Health based guidancefacilitate a systematic, consistent, and efficient evaluation of chemicals nominated by stakeholders (refer to the Nominations page). The Contaminant Screening Criteria and Prioritization Development Task Group will assist MDH in developing a decision tree to assess the likelihood that sufficient data exist to develop health-based guidance for a chemical nominated for consideration. The process for going from a nominated chemical to publication of health-based guidance is evolving and currently includes the development of criteria for three of the four levels of assessment shown in the draft decision tree below:  (Level 1) Evaluation, (Level 2) Toxicity and Exposure Screening, and (Level 3) Prioritization. The Level 4 Assessment shown is consistent with current MDH risk assessment methodology and does not require criteria development.

This task group will evaluate the toxicity and exposure screening processes (Level 2 Assessment) developed by MDH staff and will assist MDH in developing a risk-based prioritization process (Level 3 Assessment) that considers both the need and feasibility of developing health based guidance. Member of this task group include:

  • Peter Daniels (Wenck)
  • Darrell Gerber (Clean Water Action)
  • Carin Huset (Minnesota Department of Health – Public Health Laboratory)
  • Kathy Lee (United States Geological Survey)
  • John MacDonald (Ridge Road Consulting)
  • Dalma Martinovic (St. Thomas University)
  • Michael Mergens (Larkin Hoffman)
  • Tim O’Brien (Ecolab)
  • Cathy O’Dell (Minnesota Pollution Control Agency)
  • Angela Preimesberger (Minnesota Pollution Control Agency)
  • Heiko Schoenfuss (St. Cloud State University)
  • Kathleen Schuler (Institute for Agriculture and Trade Policy)
  • Patrick Shea (American Water Works Association)
  • Dan Stoddard (Minnesota Department of Agriculture)
  • Deb Swackhamer (University of MN)
  • Pat Sweeney (Freshwater Society)
  • Joe Zachmann (Minnesota Department of Agriculture)

It is anticipated that this task group will meet approximately six times over the course of approximately one year, beginning in August 2010 and ending in June 2011.

At the discretion of MDH, CEC staff will develop guidance for chemicals that are not nominated by an outside party and that are not assessed through this chemical selection process.

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Updated Thursday, February 03, 2011 at 09:53AM