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Clinton Coal Gas Community Advisory Group Webpage

The purpose of this web page is to provide information related to clean up activities at the Clinton Coal Gas Site and other former manufactured gas plant sites. Links include EPA fact sheets, comments the community advisory group has submitted to EPA, and links to other resources.

Site Updates

• Clinton Coal Gas Site Community Advisory Group, Clinton, Iowa, February 1998 (PDF)
  Description of community advisory group for Clinton Coal Gas Site.
   
• Clinton Coal Gas Site Fact Sheet, December 2002 (PDF)
  Announcement of Public Comment Period for the Engineering Evaluation/Cost Analysis (EE/CA) that examines removal options for the site.

Community Advisory Group Comments

• CAG Comments on Draft Site Characterization and Risk Assessment, March 2000 (PDF)
   
• CAG Comments on draft EE/CA, May 2002 (PDF)
   
• Additional CAG Comments on draft EE/CA, May 2002 (PDF)

Summaries of Cleanup Strategies

• A Guide to Thermal Desorption (PDF)
  Description of thermal desorption, one of many methods used to clean up soil that has been contaminated with hazardous chemicals; includes some of the advantages and disadvantages of this method.
   
• Monitored Natural Attenuation: A Cost-Effective Cleanup Approach (PDF)
  Description of use monitored natural attenuation as a groundwater cleanup strategy prepared by the Savannah River Ecology Laboratory, University of Georgia.
   
• Monitored Natural Attenuation: Is it Appropriate? When and Where?
  The Center for Public Environmental Oversight discusses appropriate applications of monitored natural attenuation for groundwater cleanup and criteria for assessing its use.

Additional Information on Monitored Natural Attenuation for Groundwater Clean-up

• EPA Guidance for Use of Monitored Natural Attenuation (PDF)
  Text of EPA guidance for use of monitored natural attenuation for groundwater cleanup at Superfund, RCRA Corrective Action, and underground storage tank sites.

Links to Other Former Manufactured Gas Plant Sites

The following links on the Internet provide examples of site assessment, cleanup, and redevelopment activities at several former manufactured gas plants around the country. Although these examples help show the range of activities at former manufactured gas plants, it is important to remember that each site is different and activities at one site may not reflect actions suitable for another site. Activities described at these Web sites may be outdated and may not represent current, ongoing activities.

• Waterloo Coal Gasification Site, Waterloo, Iowa, April 1998 (PDF)
  Description of cleanup activities at Waterloo Coal Gasification Plant in Waterloo, Iowa. Includes use of thermal desorption unit constructed on site to treat PAH-contaminated soil.
   
• City Coal Gasification Plant, Mason City, Cerro Gordo County, Iowa
  Public Health Assessment prepared by the Agency for Toxic Substances and Disease Registry for the Mason City Coal Gasification Plant. The report is dated September 29, 1995. Includes summary of site investigation, contaminant concentrations, risk assessment, and conclusions.
   
• Mason City Coal Gasification Plant, Iowa, August 2002 (PDF)
  Summary of clean-up actions at former manufactured gas plant in Mason City, Iowa. The clean-up strategy includes removal sources of groundwater contamination and monitored natural attenuation.
   
• Fairfield Coal Gasification Plant, Fairfield, Jefferson County, Iowa
  Public Health Assessment prepared by the Agency for Toxic Substances and Disease Registry for the Fairfield Coal Gasification Plant. The report is dated January 15, 1997. Includes summary of site investigation, contaminant concentrations, risk assessment, and conclusions. Results presented only include activities through 1994.
   
• Fairfield Coal Gasification Plant, Fairfield, Fact Sheet, June 2002 (PDF)
  Description of cleanup activities and the second five-year review at the Fairfield Coal Gasification Plant, Fairfield, Iowa.
   
• Fairfield Coal Gasification Plant Second Five-Year Review, September 2002 (PDF)
  Full text of the second five-year review at the Fairfield Coal Gasification Plant, Fairfield, Iowa. This review includes description of a pilot test for MNA to be used in place of the original pump and treat system for the groundwater. Groundwater cleanup objectives and groundwater monitoring data are also presented in the review.
   
• History and Contaminants, Marshalltown, Iowa
  Summary of expedited site characterization for former manufactured gas plant site in Marshalltown, Iowa.
   
• Iowa City Former Manufactured Gas Plant, Iowa City, Iowa, December 1998 (PDF)
  Brief summary of results of Expanded Site Investigation at Iowa City Former Manufactured Gas Plant Superfund Site in Iowa City, Iowa.
  
• Le Mars Coal Gas Superfund Site, Le Mars, Iowa, Fact Sheet, April 2002 (PDF)
  Status report for EPA investigation to determine groundwater contamination and cleanup strategy in Le Mars, Iowa.
   
• Marengo Former Manufacturing Gas Plant, Fact Sheet, June 2002 (PDF)
  Superfund Site Marengo, Iowa.
   
• Peoples Natural Gas, East Dubuque, Iowa, November 2002 (PDF)
  Status of former MGP site investigation and cleanup.
   
• PG & E, Sacramento Site, California
  Summary of clean up plan for former manufactured gas plant that includes use of monitored natural attenuation for groundwater treatment.
   
• Gulf States Utilities, Louisiana, October 2002 (PDF)
  Summary of Site Investigation and final clean-up strategy at a former manufactures gas plant. Cleanup up strategy including treatment of contaminated soil at the site by thermal desorption followed by monitored natural attenuation for groundwater cleanup.
   
• Manufactured Gas Plants, New York
  Website providing detailed information on environmental concerns associated with MGP sites. Documentation is also provided on site investigations and clean up decisions for MGP sites in New York.

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