DEP letter re tunnel project drawings, July 1987

NYC 9/11 Public Portal Document Faraff Lipsk( Gainer D. Smith •ISPATCHED . Urilco Yec APR 111987 Agnnrwal Suspense RA:lp

April IS, 1987 I

' 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 Street to IV. 38th Street, Borough of Manhattan Dear Mr. Shavj: In reply to your letter dated March 24, 1987 and a letter dated April 6, 1987 from Parsons j

Brinckerhoff Quades &. Douglas Inc., with which you submitted three (3) sets of "60%'' drawings and two (2) sets of sewer relocation design drawings for the above referenced project, please be advised of the following comments of this department: 1. Show all elevations in reference to a sewer datum plane which is 2.75 ft. above the U.S. C.G.S. mean sea level at Sandy Hood, N.J. 2. Show 11th Avenue in relation to the existing tunnel and sewers on drawing Nos. C-9, C-10, C-11, C-13 and C-14. 3. There are several locations where existing sewer information as shown does not match our as-built records. A copy of the North River IM study and as-built drawings for Capital Project SEN 00243 are enclosed for your reference. Drawings must be revised accordingly. In case you have more recent drawings, submit the same for our review. 4. Show legend for the proposed catch basin to be different than the proposed manhole. S. Siow existing invert elevation on the existing sewer whenever a new manhole or chamber is proposed. Show invert elevations at manholes, one U/S end and the other D/S end of this location. 6. Show the limits of abandonment of the existing sewer in IV. 341h Street.

-cont-

f N YC-WTC_OO0165382