From the latest Atlantic Yards/Pacific Park Construction Alert: overnight work begins in LIRR tunnel under Atlantic Avenue

According to the latest Atlantic Yards/Pacific Park Brooklyn Construction Update, below, covering this week and next and issued yesterday--two days late--by Empire State Development after preparation by Greenland Forest City Partners, there will be unspecified but seemingly significant work going un overnight in the Long Island Rail Road tunnel below Atlantic Avenue.

The document states:

• Night time and weekend work being performed inside the LIRR Tunnel will commence during this reporting period. All work will be taking place within the tunnel. Crews will access the tunnel via the LIRR Yard entrance on Atlantic Avenue. This work is currently slated to continue through the end of February 2015.

The hours are unclear.

Other changes

Other changes in the alert compared to the one two weeks ago concern the two towers under construction on Block 1129, the southeast block of the site.

At B11, or 550 Vanderbilt Avenue,  there will be installation of equipment for upcoming excavation and removal of light poles formerly utilized for the parking lot.
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At B14, or 535 Carlton Avenue, there's new detail on the excavation and foundation activities:

Work will include drilling of pipe piles for the SOE system and excavation of soil to a depth of 6’ for the installation of the first row of tie backs.
o A support of excavation (SOE) drill rig will be on the site in preparation for commencement of drilling of piles. Once mobilized, pile drilling will continue through this reporting period.

Also, while this and the previous alert indicated that compressors located on the 6th Avenue Bridge will be used for support of excavation (SOE) drilling, the current alert does not include information on whether there's need for additional noise mitigation, which was supposed to be determined in the previous two-week period.

Atlantic Yards/Pacific Park Brooklyn Construction Alert January 5, 2015