North Access Tunnel W. 33rd St. To w. 38TH ST

NYC 9/11 Public Portal Document

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AC- CITY OF NEW YORK / • DEPARTMENT OF ENVIRONMENTAL PROTECTION 2358 MUNICIPAL BUILDING, NEW YORK, N.Y. 10007 (2121 669-8200

HARVEY W. SCHULTZ Commissioner

July 6, 1987

Mr. A. E. Shaw, Jr,, P. E. Amtrak National Railroad Passenger Corp. 30th. Street Station Suite 330 Philadelphia, PA 19104 RE: Westside Connection Project, North Access Tunnel from W. 33rd St. to W. 38th. Street, Borough of Manhattan Dear Mr. Shaw: In reply to your letter dated June 4, 1987 with which you submitted three (3) sets of "90%." drawings, please be advised of the following comments of this department: 1. The drawings have not been revised in accordance with comment No.3 of our letter dated April 15, 1987. The size of the existing sewers, invert elevations etc. must be per as-built records. In case the existing inverts are different from the as-built records, a copy qf field survey must be submitted to authenticate the same. 2. All elevations should be shown in reference to a sewer datum plane which is 2.75 ft. above the U.S.C.G.S. mean sea level at Sandy Hook, N.J. These elevations will not be computed as per not No.l on drawing No. C-7. 3. Abandon existing L5" combined sewer as shown on drawing No. C-11. All existing connections to this sewer should be picked up by the proposed 3'-6"x 3'~6" combined sewer. 4. Manhole Nos.1,2 and 3 shall be chambers.

5. Label existing combined sewers, catch basin connections and internal yard drains on drawings No. C-11, C-12, and C-13 as discussed in a meeting held on July 2, 1987. All yard drain connections to the sewer system should be shown as house connections for which a permit is required from our Permit Control Section.

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NYC-WTC_000165349