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Chromium 6 Groups Formed

Chromium 6 Groups Formed

March, 2011

Two groups have been formed to explore and monitor the issue of Chromium 6 in the City of Norman’s water supply. The first group is a Chromium 6 Management Working Group comprised of:

  • Mayor Cindy Rosenthal
  • Councilmember Carol Dillingham
  • Councilmember Jim Griffith
  • Councilmember Tom Kovach

City of Norman staff represented on this committee includes:

  • City Manager Steve Lewis
  • Utilities Director Ken Komiske
  • Public Works Director Shawn O’Leary

The purpose of this group is to coordinate the City’s monitoring and response including engineering evaluations, public information, federal and state legislation and contact with federal/state regulatory agencies.

Also established is a Technical Advisory Committee to review and advise City Council and City Staff on the evolving issues of Chromium 6. This group has been formed to supplement staff knowledge and supply advice and consultation on scientific and technical matters. The members of this group are:

  • Dr. Andrew S. Madden with the University of Oklahoma’s School of Geology and Geophysics
  • Dr. Robert W. Nairn with the University of Oklahoma School of Civil Engineering and Environmental Science
  • Dr. David Sabatini with the University of Oklahoma School of Civil Engineering and Environmental Science
  • Dr. Daniel Boatright with the University of Oklahoma’s College of Public Health
  • Dr. Roger Frech with the University of Oklahoma’s Department of Chemistry and Biochemistry
  • Dr. Paul Spicer with the University of Oklahoma’s Center for Applied Research

In Norman, total chromium is tested periodically in accordance with regulations of the Oklahoma Department of Environmental Quality (ODEQ) and the United States Environmental Protection Agency (EPA). Total chromium is regulated by the EPA as a primary drinking water contaminant. The maximum contaminant level (MCL) for total chromium is 100 parts per billion (ppb). According to the EPA, a lifetime exposure to levels equal to the MCL are not believed to result in any known or expected risk to human health.

Norman has monitored total chromium for several years and complies with the existing EPA maximum contaminant level of 100 ppb. Chromium testing is reported annually to our customers in our Consumer Confidence Report (CCR); the latest CCR indicates total chromium values for our ground water wells are below the 100 ppb level. The Water Treatment Plant, that treats Lake Thunderbird water, has total chromium levels below detectable limits.

The Chromium 6 Management Working Group and the Technical Advisory Committee will examine long term responses and will keep City of Norman citizens informed relative to this matter.