USGS Publications—Open-File Report 2006-1045

Prepared in cooperation with the U.S. Environmental Protection Agency
and the United City of Yorkville, Illinois

Geology, Hydrology, and Water Quality of the Glacial Drift Aquifer in the Vicinity of the Nelson Landfill near Yorkville, Illinois

Open-File Report 2006-1045—ONLINE ONLY

By  Robert T. Kay


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Abstract

The geologic and hydrologic characteristics of the sand-and-gravel deposits that compose the glacial drift aquifer in the vicinity of the Nelson Landfill site in Yor­kville, Illinois indicate that the aquifer could be devel­oped as a source of public water supply. The geology of these deposits within the Newark Bedrock Valley is com­plex, however, and a detailed investigation of their water bearing and transmitting properties will be required to successfully locate high-capacity wells.

Volatile organic compounds, pesticides, and cyanide were not detected in ground water during this investiga­tion. Metals and nitrogen compounds were not detected at concentrations above their Maximum Contaminant Level. Iron, manganese, and aluminum were detected at concentrations above their Secondary Maximum Con­taminant Level and various constituents were detected at concentrations above background levels downgradi­ent of the landfill. Nitrate and ammonia, presumably derived from agricultural practices, also were detected in samples from locations hydraulically upgradient of the landfill.

Oxidation-reduction conditions in the aquifer become more reducing with depth. This change is reflected by a change in the type of nitrogen compound detected and the concentration of dissolved oxygen and iron in the glacial drift aquifer. Concentrations of some of the major ions and metals may be affected by disso­lution of carbonate minerals in the aquifer and perhaps road salts.


Table of Contents

List of Figures

  1. Thickness of glacial drift deposits and location of the Nelson Landfill site and the Newark Bedrock Valley in Kendall County, Illinois
  2. Location of the Nelson Landfill site, Yorkville, Illinois
  3. Ground-water sampling locations and line of geologic section in the vicinity of the Nelson Landfill site
  4. Surficial geology of Kendall County, Illinois
  5. Diagram showing hydrogeologic section A-A’ in the vicinity of the Nelson Landfill site
  6. Water levels in monitoring wells and potentiometric surface of the shallow part of the glacial drift aquifer in the vicinity of the Nelson Landfill site, July 13, 2005
  7. Value of selected field parameters in samples from monitoring wells in the vicinity of the Nelson Landfill site, July 27, 2005
  8. Concentration of major ions in samples from monitoring wells in the vicinity of the Nelson Landfill site, July 27, 2005
  9. Concentration of nitrogen compounds in samples from monitoring wells in the vicinity of the Nelson Landfill site, July 27, 2005
  10. Concentration of selected metals in samples from monitoring wells in the vicinity of the Nelson Landfill site, July 27, 2005

List of Tables

  1. Monitoring well data in the vicinity of the Nelson Landfill site, Yorkville, Illinois
  2. Lithologic logs for the vertical aquifer profile (VAP) locations in the vicinity of the Nelson Landfill site
  3. Vertical aquifer profile data in the vicinity of the Nelson Landfill site, April 4-27, 2005
  4. Field parameters measured in water from monitoring wells and seeps in the vicinity of the Nelson Landfill site
  5. Correlation of selected constituents in ground water from monitoring wells in the vicinity of the Nelson Landfill site, July 27, 2005
  6. Concentration of major ions and nitrogen compounds in water from monitoring wells and seeps in the vicinity of the Nelson Landfill site
  7. Concentration of volatile organic compounds in water from monitoring wells and seeps in the vicinity of the Nelson Landfill site
  8. Concentration of pesticide compounds in water from monitoring wells and seeps in the vicinity of the Nelson Landfill site
  9. Concentration of metals and cyanide in water from monitoring wells and seeps in the vicinity of the Nelson Landfill site

For more information Contact: Robert Kay


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