In the list of Atlantic Yards promises broken, the newly-revealed loss
of a green roof (3+ acres) on the arena follows 1) the decision to make
promised
publicly-accessible open space on the arena private
and 2) the decision to move the project's flagship tower (then called "Miss
Brooklyn"), promised to not
block views of the Williamsburgh Savings Bank's clock tower, so it would
block such views, even with a reduction in height.
The difference might be that the green roof was relied on significantly
in the Empire State Development Corporation's environmental review because
it would help with stormwater management and thus help prevent against CSOs
(combined sewer overflows).
Does its loss invalidate the Final Environmental Impact Statement (EIS),
which has been challenged in state court? Unclear. The case was dismissed
and is now on appeal, with arguments
to be heard in September.
...
From the FEIS chapter on Infrastructure:
Includes detention tanks in Arena block and LIRR, seasonal retention in
Arena block, and Arena green roof.
From the chapter on Landscape
Design: The proposed
publicly accessible open space and the arena’s green roof would absorb
some of the rainwater runoff that would otherwise flow directly into the
City’s water drainage system.
From the chapter on Open
Space:
In addition, approximately one acre of
private open space intended for use by the project site tenants would be
built on a portion of the roof of the proposed arena.... This green space
would be designed with detention and retention basins to limit the amount
of runoff that flows directly into the City’s water drainage system
(see Chapter 11, “Infrastructure,” for discussion of green design
features).
From the Appendix
Here are some excerpts from the report
submitted by FCR's consultants, Hydroqual:
The Atlantic Yards plan employs a variety
of technologies and stormwater management strategies to meet the FCR goal
of not affecting water quality in the Gowanus Canal or East River as compared
to the project no-build condition in the planning years 2010 and 2016. These
include:
• On-site detention and retention tanks for stormwater with multi-level
discharge points to optimize storage
...
• Use of green roof on the arena to intercept portions of runoff from
reaching the sewer system during rain events.
FCR retained several consultants to address
different aspects of the design related to wastewater and stormwater:
• Judith Nitsch Engineering (JNE) provided engineering and architectural
services regarding site design and stormwater management strategies for
the project site.... In addition to detention/retention of stormwater, the
use of green roofs on the arena as an additional stormwater management feature
was evaluated by JNE using computational methods that are applicable at
the site level.
Full
article.
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