Phase II Investigation Completed

A Phase II Investigation completed at the W. Church Street property owned by the city of Grand Prairie indicated a release had occurred from the underground storage tanks formerly located on the property. Subsequently, a Leaking Petroleum Storage Tank (LPST) investigation was completed by W&M which demonstrated that, although gasoline constituents were present in groundwater above TCEQ Action levels, there were no unacceptable risks to human health or environmental receptors. The LPST case received closure from TCEQ in August 2011.

During the investigation it was discovered that the leak had migrated into the adjoining property. The property owner qualified as an Innocent Owner/Operator as defined by TCEQ since their property had been impacted from the gas station release and activities at the adjoining property did not contribute to the plume. The City agreed to voluntarily obtain an IOP certificate to the benefit of the adjoining property since it had been impacted by a release from City-owned property. For more information please contact This email address is being protected from spambots. You need JavaScript enabled to view it. .

Ongoing Industrial Hygiene Services Provided to Air Force 355th Medical Group

W&M recently provided industrial hygiene support to the Bioenvironmental Engineering group at Davis-Monthan Air Force Base located in Tucson, Arizona. Personal air sampling was conducted to determine employee exposure to heavy metals (including Hexavalent Chromium) during welding, sanding, grinding and painting activities. Exposures to other contaminants of concern, such as benzene, toluene, hydrogen peroxide, wood dust, respirable dust, fiberglass, and phenol, were also determined through personal air sampling at various shops. W&M will continue to provide industrial hygiene support services this month. For more information, contact Lori Siegelman.