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Your Environment. Your Health.

Person Details: Peggy A. O'Day

Superfund Research Program

Peggy A. O'Day

University of California-Merced
School of Natural Sciences
5200 N. Lake Road
Merced, California 95343
Phone: 209-228-4338
Fax: 209-228-4053
Email: poday@ucmerced.edu

Hazardous Waste Sites

Onondaga Lake

  • Invalid project

Sulphur Bank Mercury Mine

  • Invalid project

Publications

2016

2015

  • Serrano S, Gomez-Gonzalez MA, O'Day PA, Laborda F, Bolea E, Garrido F. 2015. Arsenic speciation in the dispersible colloidal fraction of soils from a mine-impacted creek. J Hazard Mater 286:30-40. doi:10.1016/j.jhazmat.2014.12.025 PMID:25576781

2012

2011

  • Hayes SM, O'Day PA, Webb SM, Maier RM, Chorover J. 2011. Changes in zinc speciation with mine tailings acidification in a semiarid weathering environment. Environ Sci Technol 45:7166-7172. doi:10.1021/es201006b PMID:21761897 PMCID:PMC3175378
  • O'Day PA, Serrano S, Stilson T, Vlassopoulos D. 2011. Mercury distribution and speciation in a seasonal wetland impacted by mine waste. In: Goldschmidt Conference.
  • Serrano S, Vlassopoulos D, Bessinger B, O'Day PA. 2011. Hg(II) sequestration by ettringite-type phases. A geochemical modeling and EXAFS study. In: Goldschmidt Conference.
  • Vlassopoulos D, O'Day PA. 2011. Approaches to in situ remediation of mercury and arsenic contaminated soils and sediments using mineral amendments. In: The Mineralogical Society Annual Meeting: Frontiers in Environmental Geoscience.

2010

  • Bessinger B, Vlassopoulos D, Serrano S, O'Day PA. 2010. Reactive transport modeling of arsenic and mercury fate at the ground water-surface water interface. In: The National Groundwater Association 2010 Ground Water Summit.
  • O'Day PA, Vlassopoulos D. 2010. Mechanisms of contaminant metal and metalloid sequestration using reactive amendments for soil and sediment remediation. In: The 20th General Meeting of the International Mineralogical Association.
  • O'Day PA, Vlassopoulos D. 2010. Mineral-based amendments for remediation. Elements 6:375-381. doi:10.2113/gselements.6.6.375 PMID:22203887 PMCID:PMC3245872
  • Serrano S, Vlassopoulos D, Garrido F, Garcia-Gonzalez MT, O'Day PA. 2010. Calibration of a general mineralogy-constrained sorption model for heavy metals and application to evaluation of reactive transport processes in natural soil columns. In: The National Groundwater Association 2010 Ground Water Summit.
  • Serrano S, Vlassopoulos D, Garrido F, Garcia-Gonzalez MT, O'Day PA. 2010. Calibration of a general mineralogy-constrained sorption model for heavy metals and application to evaluation of reactive transport processes in natural soil columns. In: The National Groundwater Association 2010 Ground Water Summit.
  • Serrano S, Vlassopoulos D, Garrido F, Garcia-Gonzalez MT, O'Day PA. 2010. Calibration of a general mineralogy-constrained sorption model for heavy metals and application to evaluation of reactive transport processes in natural soil columns. In: The National Groundwater Association 2010 Ground Water Summit.

2009

  • Bessinger B, Vlassopoulos D, Serrano S, O'Day PA. 2009. Reactive transport modeling of arsenic and mercury in a chemically amended sediment cap. In: Proceedings of the Fifth International Conference on Remediation of Contaminated Sediments. Battelle, Jacksonville, FL.
  • O'Day PA, Serrano S, Bessinger B, Illera V, Vlassopoulos D. 2009. Sediment remediation of metal and metalloid contaminants with reactive amendments. In: 19th Annual V.M. Goldschmidt Conference. Davos, Switzerland.
  • Vlassopoulos D, Bessinger B, Illera V, O'Day PA. 2009. Lithologic, hydrologic, and biogeochemical influences on spatio-temporal variability of As and Hg concentrations in groundwater. In: 19th Annual V.M. Goldschmidt Conference. Davos, Switzerland.

2008

  • O'Day PA, Illera V, Choi S, Vlassopoulos D. 2008. Immobilization and natural attenuation of arsenic in surface and subsurface sediments. In: American Geophysical Union, Fall Meeting. San Francisco, CA.

2002

  • Melitas N, Wang J, Conklin MH, Farrell J, O'Day PA. 2002. Understanding soluble arsenate removal kinetics by zerovalent iron media. Environ Sci Technol 36(9):2074-2081. doi:10.1021/es011250y PMID:12026995

2001

  • Farrell J, Wang J, O'Day PA, Conklin MH. 2001. Electrochemical and spectroscopic study of arsenate removal from water using zero-valent iron media. Environ Sci Technol 35(10):2026-2032. doi:10.1021/es0016710 PMID:11393984
  • Villinski JE, O'Day PA, Bargar JR, Conklin MH. 2001. In situ formation and transformation of Fe(III) precipitates from the oxidation of Fe(II) by MnO2. In: Proceedings of the 222nd ACS (American Chemical Society) National Meeting - Fall 2001. Chicago, IL. pp.PaperNo.482686.
  • Villinski JE, O'Day PA, Corley TL, Conklin MH. 2001. In situ spectroscopic and solution analyses of the reductive dissolution of MnO2 by Fe(II). Environ Sci Technol 35(6):1157-1163. doi:10.1021/es001356d PMID:11347928

2000

  • Kay JT, Fuller CC, Conklin MH, O'Day PA. 2000. Trace-metal interactions with sediments from the hyporheic zone of a mine-contaminated stream, Pinal Creek, Arizona. In: Proceedings of the Conference on Earth Observing System (EOS), Transactions of the American Geophysical Union. Fall Meeting Supplement, December 15-19. San Francisco, CA. pp.F480.
  • Villinski JE, O'Day PA, Bargar JR, Conklin MH. 2000. Reductive dissolution of MnO2 by Fe(II): Effects of chemical gradients and intermediate phase structural information. In: Proceedings of the American Chemical Society Fall Meeting, August 20-24, American Chemical Society. Washington, DC. pp.630-633.

1999

  • Villinski JE, O'Day PA, Corley TL, Conklin MH. 1999. A flow-through cell for in situ, real time X-ray absorption spectroscopy studies of geochemical reactions. In: Proceedings of the U.S. Geological Survey Toxic Substances Hydrology Program Technical Meeting - Volume 2 - Contamination of Hydrologic Systems and Related Ecosystems. U.S. Geological Survey Water-Resources Investigations Report 99-4018B. pp.217-226.

1998

  • Villinski JE, O'Day PA, Conklin MH. 1998. Reductive dissolution of pyrolusite by Fe(II): A real-time, in situ XANES experiment. Eos, Transactions, American Geophysical Union 79(45):342-343.
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Last Reviewed: April 08, 2025