Hanlin-Allied-Olin

State TrusteeState of West Virginia
AO Bureau

Also Known As

Hanlin-Allied-Olin NPL

Incident Type

Chemical

State

West Virginia

Case Status

Assessment

Location

Moundsville, Marshall County

Authority

Contaminants of Concern Include

Affected DOI Resources Include

DOI Managed Lands, Migratory Birds

Case Description

The Site is located in Marshall County, West Virginia, approximately three miles south of Moundsville. The 382-acre Site contains a former chlor-alkali manufacturing facility that released various contaminants, most notably mercury, into on-site floodplain soils, wetlands, and the adjacent Ohio River. Beginning in 1987, the Site was under investigation under the Resource Conservation and Recovery Act (“RCRA”). On June 22, 1999, the Site was listed on the National Priority List (“NPL”) under the CERCLA. Releases of hazardous substances have impacted surface soils, subsurface soils, surface water, groundwater and floodplains on the Site. Numerous natural resources under our jurisdiction in the Ohio River and on its floodplain have likely been affected by the releases of hazardous substances from the Site. Natural resources include the groundwater, surface water, sediment, biological resources of the Ohio River that provide habitat for fish and wildlife species, and two islands within the Ohio River Islands NWR. Honeywell is drafting the remedial design for OU1 - the upland portion of the site. EPA and the PRPs are working on the development of the Remedial Investigation Report for OU2 (ground water systems and sediments, surface water, pore water, and biota within the adjacent Ohio river). Data from Captina Island, a FWS refuge island located downstream from the Site, and biota within the Ohio River indicates the presence of total and methyl mercury and potential ecological risk. The Trustee Council is beginning to review the available data and determine if additional studies are needed to assess injury at the site.

Photograph shows the former Mercury Cell Building Area with the Groundwater Treatment Plant visible. , Credit: Taken from Figure 7 of the Record of Decision Hanlin-Allied-Olin Superfund Site Operable Unit 1, Geosyntec Consultants, 2020

Google Earth image of the HAO site and downstream areas., Credit: Google Earth


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Case Contact

Pennsylvania Ecological Services Field Office

State College, PA | (814) 234-4090 | http://www.fws.gov/northeast/pafo/

Case Trustees

AO Bureau
State TrusteeState of West Virginia

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