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Re: New MTA statement on L-train project

Posted by Stephen Bauman on Sat Jan 12 16:29:34 2019, in response to Re: New MTA statement on L-train project, posted by Andrew Saucci on Sat Jan 12 11:15:24 2019.

that the duct bank should be removed altogether if it is no longer useful on its own...

Demolition of the duct bank is what requires shutting down one or both tunnels. More precisely, it's the silica dust that's generated during demolition. The dust wafts into the air and takes too long to settle out to permit train operation during daytime hours.

The academics' contribution was realizing that future operation did not depend on demolishing the duct bank.

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