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MISCA - Miscellaneous Operable Unit

This OU has twenty-one sites were investigated.  Three sites, Site 14, Site 22A and Site 36, were identified as requiring remediation.  Site 22A, the location of a former wood-treating facility contaminated with pentachlorophenol, was cleaned up in the 1990s under a removal action.   Site 14 is an area of soil and groundwater with primarily solvent contamination adjacent to a former ink manufacturing facility.  A Record of Decision (ROD) issued October 2001, selected a remedy consisting of demolition of a building, excavation and off-site disposal of soils into a permitted landfill, treatment of groundwater water that seeps into the excavation area, and groundwater monitoring. 

A Unilateral Administrative Order was issued by USEPA to Illinois Tool Works directing the remediation of the site.  Remediation is anticipated to begin in Fall, 2005.  Site 36, the former Refuge wastewater treatment plant, had sludge, sediment, and soil contaminated primarily with PCBs and cadmium.  The dilapidated wastewater treatment plant had been in continuous operation since World War II and received wastewater from industrial tenants.  The Record of Decision, issued September 2002, selected a remedy consisting of demolition and disposal of the contaminated wastewater treatment plant, treatment of water from the east pond, excavation and off-site disposal of soils into a permitted landfill, and groundwater monitoring.  The Bureau of Reclamation awarded a contract for remediation to Pangea Group, Inc. and provided construction management support.  FWS demolished the contaminated wastewater treatment plant.  Approximately 39,000 cubic yards of soils, sludges, and building debris were removed and disposed off-site in a permitted landfill.  The remediation was completed in 2006.  Trees were planted to reforest the site.  FWS will conduct long term groundwater monitoring and monitor the effectiveness of reforestation.    

Site 14 is an approximately 2 acre site contaminated primarily with petroleum hydrocarbons (benzene, toluene, ethyl benzene, and xylene).  A Record of Decision issued in October 2001, selected a remedy consisting of demolition of a building, excavation and off-site disposal of soils into a permitted landfill, treatment of groundwater that seeps into the excavation area, and groundwater monitoring.  A Unilateral Administrative Order was issued by USEPA to Diagraph (Illinois Tool Works is the successor to Diagraph) directing the remediation of the site.  Illinois Tool Works completed the excavation and off-site disposal portion of the remedial action in the Summer of 2007.  They excavated to lower cleanup numbers in lieu of completion of a limited human health risk assessment and performance of monitored natural attenuation of groundwater.  Illinois Tool Works will conduct groundwater monitoring to evaluate the performance of the remedy in achieving groundwater cleanup standards.

MISCA OU Overview Map (578 KB PDF file)

Acronyms

The following documents can be found at:

Southern Illinois University        (618) 453-2818

McLafferty Annex

1830 University Press Drive

Carbondale, Illinois 62901

Hours:  Monday - Friday 9:00 a.m. - 5:00 p.m.

 

U.S. Fish & Wildlife Service     (618) 997-3344

Crab Orchard National Wildlife Refuge

6987 Headquarters Road

Marion, Illinois 62959

Hours:  Monday - Friday 8:00 a.m. - 4:00 p.m.

The following are downloadable documents in Adobe Acrobat format.

2006 Five Year Review (4.3 MB PDF file)

2002 Record of Decision for the MISCA Operable Unit at Site 36  (2.65 MB PDF file)

2001 Record of Decision for the MISCA Operable Unit at Site 14 (5.4 MB PDF file)

1996 Action Memorandum for Removal Action at Site 22A (3.84 MB PDF file)

 

 

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Crab Orchard National Wildlife Refuge

CERCLA Office
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Phone:  (618) 997-5491  

Email:  CrabOrchardCleanup@fws.gov

 

Last Updated:  August 6, 2007