Preliminary Hydrogeologic Investigation of the FutureGen 2 Site in Morgan County, Illinois.

Dey, William S.; Locke, Randall A.; Krapac, Ivan G.; Patterson, Christopher G.; Hurry, Jacquelyn L.

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https://hdl.handle.net/2142/43407 Copy

Description

Title

Preliminary Hydrogeologic Investigation of the FutureGen 2 Site in Morgan County, Illinois.

Author(s)

• Dey, William S.
• Locke, Randall A.
• Krapac, Ivan G.
• Patterson, Christopher G.
• Hurry, Jacquelyn L.

Issue Date

2012

Keyword(s)

• Hydrogeology
• Carbon Sequestration
• Groundwater
• Groundwater Monitoring
• Hydrology

Geographic Coverage

Morgan County

Abstract

In anticipation of the FutureGen 2 carbon sequestration activities in Morgan County (Section 25, Township 16 North, Range 9 West), field work was conducted to describe shallow geologic conditions and characterize shallow groundwater quality at the site. The Illinois State Geological Survey (ISGS) drilled one shallow stratigraphic boring to 230 feet. Bedrock was encountered at 123.5 feet below the land surface. No aquifer material was encountered in the Quaternary material or in the bedrock. A shallow groundwater monitoring well was installed at a depth of 20 feet and developed to ensure water levels and water quality within the well were representative of in situ conditions. A surficial 2-D seismic survey and an electrical earth resistivity (EER) survey were conducted at the site. The seismic survey was conducted before drilling primarily to assess the presence of shallow natural gas. None was detected. An EER survey was conducted following installation of the shallow monitoring well to assess whether aquifer materials were present at other locations in the vicinity of the shallow well. Results from the EER survey indicated a slight increase in resistivity to the southwest and southeast. The higher resistivity may indicate a slight increase in the occurrence of shallow sand in those directions. Water from 10 private water supply wells and the shallow groundwater monitoring well were sampled between October 25 and November 17, 2011. Most constituent concentrations were less than the drinking water standards. Iron (Fe), manganese (Mn), nitrate (NO3), and total dissolved solids (TDS) were the only constituents whose concentrations exceeded USEPA primary or secondary standards in some of the groundwater samples. Groundwater samples from two wells contained nitrate concentrations above the EPA Maximum Contaminant Level (MCL), 10 mg NO3-N/L. The concentrations of nitrate in the samples from these wells were also significantly greater than those detected in other samples. This report summarizes results from the stratigraphic bore hole, the geophysical surveys, and analytical results from groundwater sampling.

Publisher

Illinois State Geological Survey, Prairie Research Institute

Series/Report Name or Number

Open file series 2012-06

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/43407

Sponsor(s)/Grant Number(s)

US Department of Energy

Copyright and License Information

Copyright 2012 University of Illinois Board of Trustees

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