Port Authority response to DEP comments, Jan 29 1982

NYC 9/11 Public Portal Document

4’ • THE POKTAlJ^ORrTY Opp vVorOi Traoe O' ptp; New York, N.Y, 10048

(2121 466 7000 (201) 622-6600

January 29, 1982

Mr. Frederick Novotny, P.E. Chief, Division of Sewer Regulation & Control City of New York Department of Enviromental Protection 2358 Municipal Building Ft" 0 3 New York, New York 10007

Re: THE WORLD TRADE CENTER - Dey Street Underpass

Dear Mr. Novotny:

All the revisions you requested in your October 8, 1981 letter to me have been incorporated into Utility Agreement Drawing Nos. WTC-Cl through ’WTC-C7-81, except as follows.

Generally, specific details of sewer manholes, cradles, casings and subsoil conditions as well as similar elements of construction for participating utility companies have been omitted since the above drawings are only required to establish the lanes for each of the relocated utilities. Upon receipt of your approval, we will complete detailed Contract Drawings and submit them to you for approval. Note #1 of the General Notes on Drawing No. WTC-C3-81 con­ firms this procedure.

I understand that wherever Con Edison 'Steam lines affect the sewer system they also will submit Contract Drawings for your review and approval.

The following are specific references to the comments in your October 8th letter using the same item numbers.

1. Drawing No. C-4 has been revised to show 4'-2" clear between the building and the steampipe casing. Class 56 ductile iron pipe on a Class "35" concrete cradle. Additional detail as noted above will be included in the final Contract Drawings.

2. A complete profile of the rerouted 18" sewer is provided on a new drawing, WTC-C7-81.

3. As you suggested, we attempted to redesign Manhole #3 as an "L"- shaped manhole but concluded that adjacent construction rendered that method impractical. We therefore returned to the original design with entrance to the sewer at the existing manhole. In a previous submission, you did not object to this method.

Hec-O

Writer's direct dial telephone:. r \

NYC-WTC_000165587