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Last Edited: 8/5/2010

Georgia Pacific Gypsum (formerly Domtar Gypsum), Antioch - Public Health Activities

In 2008, the California Department of Public Health (CDPH) released an evaluation of the ways in which people could be exposed to asbestos from the Georgia Pacific Gypsum (formerly Domtar) facility and reviewed health information for the surrounding community. 

The site 

The former Domtar facility is located at 801 Minaker Drive, Antioch. Since 1996, the current owner has been Georgia Pacific. Though the facility has been owned by different companies, it has always been used to manufacture various building construction products, including gypsum wallboard. About 20% of wallboard is made extra fire-resistant by adding non-combustible fibers (fiberglass or vermiculite) to the gypsum. From 1967 through 1984, the facility at this location received approximately 5,706 tons of vermiculite from Libby, Montana that were used to manufacture extra fire-resistent gypsum wallboard. Vermiculite from Libby is now known to contain 21-26% asbestos.   

CDPH's involvement at the site

CDPH prepared a report called a health consultation under a cooperative agreement with the Agency for Toxic Substances and Disease Registry. The report includes a review of cancer records and death certificate information in the area near the facility. This was done to see if the number of cancers and deaths that could be related to asbestos were higher than expected.

Health Consultation for Domtar Gypsum American, Inc., Antioch [5/7/08]

A Neighborhood Health Alert was mailed in September 2008 to inform the nearby community of the health consultation and its findings.

Neighborhood Health Alert regarding Domtar Gypsum American, Inc.

En Español  Alerta de Salud de la Vecindad con respecto a la compañía Domtar Gypsum American, Inc.  

Summary of CDPH's findings

  • Current operations at the facility do not pose a hazard to nearby residents. 
  • The primary concern for past exposure is the workers who directly worked with the Libby vermiculite; for instance, those workers who filled the hopper.
  • On the basis of sampling at similar facilities, current operations at the facility do not pose a hazard to the current workers; sampling at this facility would confirm this.
  • The health statistics review did not find any pattern of cancer incidence consistent with asbestos exposure in the areas near the facility.
  • The health statistics review found an inconsistent pattern of deaths associated with asbestos exposure in the areas near the facility. 

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