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MA OU - Metals Area Operable Unit

This OU consists of 3 sites totaling approximately 25 acres within the Crab Orchard National Wildlife Refuge.  The Record of Decision (ROD), March 1990, documented lead, cadmium, zinc, and cyanide contamination.  Over 40,000 cubic yards of soils were removed and treated as necessary or disposed in an engineered 3-acre on-site landfill in 1995 and 1996.  The USFWS is conducting long term operation and maintenance which consists primarily of groundwater monitoring, leachate disposal, and maintenance of the onsite landfill.

Metals OU Overview Map (624 KB PDF file)


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)

2001 Five Year Review for the Metals Area Operable Unit (2.35 KB PDF file)

1990 Record of Decision for the Metals Area Operable Unit


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Crab Orchard National Wildlife Refuge

8588 Rt. 148
Marion, IL 62959

Phone:  (618) 997-5491  

Email:  CrabOrchardCleanup@fws.gov


Last Updated:  August 6, 2007