CFS has hired a national contractor, Clean Harbors Environmental, to clean the area and recover the oil. Biewener estimated that the cleanup would be completed by the fall.
Biewener said that the regularly inspected tank was still under warranty and that CFS planned to investigate whether the tank was faulty.
Biewener met yesterday with the director of Harvard's Environmental Health and Safety department, Joe Griffin, to discuss the cleanup. The U.S. Environmental Protection Agency, Massachusetts Department of Environmental Protection and Bedford conservation commission were also notified.
A spokesman for Clean Harbors said that the company was legally bound to refer inquiries to Harvard.
--Staff writer Daniel K. Rosenheck can be reached at rosenhec@fas.harvard.edu.