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DEP siphon design hydraulic review letter, Jul 1987

Machine-extracted title · confidence 87%

DEP Bureau of Sewers clarifies hydraulic review procedures and provides technical comments on proposed siphon design in tunnel.

NYC-WTC_000165365–000165370

Folder label: “North Access Tunnel W. 33rd St. To w. 38TH ST

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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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NYC-WTC_000165370Source: NYC Law Department, mirrored locally

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