It's been nearly 60 years since the Titan I project was abandoned, but remnants of a bygone era remain. While the 160-foot-deep silos can be easily located by their concrete and steel covers bulging above the surface, the presence of the chlorinated solvent trichloroethene (TCE) is less apparent. USACE is working with the Central Valley Regional Water Quality Control Board and property owners to clean up contaminants at the former Department of Defense location through its Formerly Used Defense Sites program.