NYC 9/11 Public Portal Document
^anonu Ona Pann Pitta
iSEiSi 100
Mneitarhoff
Ouadat
Naw York. NY 10119
212-613-SOOO
i- -t*? naaa Dauglaa,lno.
Enginaan
Plwman
January 8, 1987 Cabla: Parklap. Naw l^k
Wax: RCA 232 117 PKLP UR
Mr. Magdi Farag
Chief, Division of Sewer Regulations and Control
Bureau of Sewer
40 Worth Street, 9th Floor
New York. NY 10013 - ,
Re: AMTRAK, North Access Tunnel/ « 0 ISiY
Huai Inverted Siphon X .
■ ; Final Design-Memorandum I’i^ -
' . V i /..< -..'
Dear My,’ Farag;: ' .> _ ?.
tndosed please < find for your revi^ jand comment the Final - design
- Memorahdum for the .Dual Inverted 'Si phon^f AMTRAK’s North. Access Tunnel.
The purpose of this memorandum is to:
:o Sumarize the siphon concept.
0 Establish design criteria.
o Summarize the design flow for final design.
0 Describe the proposed access road for siphon maintenance.
o To receive your comments for the above items as early as possible.
We are proceeding;on the final design based on the general conditions -. ’
described in Section A, the criteria^ design flow and the access
- description presented in Section B thru E of this, memorahdum.
Your response before January 26, 1987 will-be greatly appreciated.-
; Very truly yours. Jz
PARSONS BRINCKERHOFF QUADE 1 DOUGLAS, INC.,
Ahmet Gursoy, P;E. \
Project Manager
cc: I. Oncu - AMTRAK
AG/mjr
A Century of
Engineering Excetlenco
NYC-WTC_000165370
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