Results in Brief

AOC has started to address problems in the tunnels, but their condition remains substantially unchanged—that is, the conditions OOC cited as hazardous remain.

For example, AOC has installed supports in some areas of one tunnel to minimize the potential for falling concrete and has required individuals entering the tunnels to wear protective equipment and clothing to shield them from potential asbestos exposure. In addition, AOC is working toward removing the delaminated concrete and cleaning the tunnels, so that the exhaust fans can be turned on to reduce the temperature in the tunnels.

An AOC contractor has completed assessments of three of the tunnels and determined that they are not in danger of collapse. The contractor is still assessing the two remaining tunnels and expects to complete these assessments by December 31, 2006.

Most other AOC efforts are in the study, planning, or procurement stage. As a result, the potential for falling concrete, asbestos exposure, excessive heat, poor communications, and inadequate escape procedures continue to pose problems. Progress in resolving the problems in the tunnels has been hindered because the tunnel conditions that AOC and its contractors are trying to address make it difficult to work in the tunnels.

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see also:

Falling Asbestos Concrete Worried that the falling concrete in tunnels could be asbestos?
Asbestos in the concrete falling in tunnels? Get info about the danger

Concrete & Pipes Did you work with concrete and asbestos while laying pipe in tunnels?
Laying pipe in tunnels lined with concrete and asbestos danger.

Pipefitters in Washington DC Pipefitters who work in utility tunnels face asbestos exposure.
Know pipefitters who work with asbestos in utility tunnels? Read more!