DEP memo on cleaning order for contaminated building, July 2002

NYC 9/11 Public Portal Document

/3:03PM HP LASERJET 3200 P. 3

Staunton Chowp.c. engineers. & architects new york • new jersey • puerto rico June 7, 2002 New York City Department of Environmental Protection Bureau of Water and Sewer Operations Central Mapping and Records 59-17 Junction Boulevard - 12'" Floor, High Rise Corona, New York 11368

Attention: Vincent J. Soriano, Chief Bureau of Water and Sewer Operations Central Mapping and Records

Reference: WTC Rebuilding of New York City Transit 1&.9 Subway Lines

Dear Mr. Soriano: As part of the above referenced matter Staunton Chow, P.C. Engineers and Architects (SC) have been tasked by the New York City Transit Authority through FMP Group to investigate the water leaks in the vicinity of the former World Trade Center site (WTC) as a result of the September 11 terrorist attack. Presently, the New York City transit Authority is rebuilding the 1 and 9 train line and they have expressed concern about the possible uplift pressures of ground water. Please note that the NYC TA, currently has data regarding the water table, but need to have information on the water main and sewer main breaks occurred at the time in order to have an accurate interpretation of the data. In addition, we need specific information and maps from your office to complete the information NYCTA needs to rebuild the subway lines.

We are also enclosing the completed NYCDEP forms requested from your office. In addition to the requested water and sewer main maps, we require the following information of the water main breaks in the vicinity of the former World Trade Center site in order to accurately proceed with the rebuilding of the subway lines 1&9:

□ Location of the water and sewer main breaks. □ When the water main shut down took place. □ When and what emergency repairs were done to the water and sewer mains. □ Approximate amount of water (gallons) lost due to water and sewer mains.

Please note that our office, as consultants to the PPM Group and the New York City Transit Authority, will use this information solely for the purpose of interpreting readily available groundwater information in the above-mentioned project. Should you have any questions or concerns, please do not hesitate and contact the undersigned. Thanks in advance. / / Very truly ^ur^, STAUNT^' GifOW ENGINEERS, P.C.

In Project 'f^enaget, Environmental Engineer

■ Cc: Jose K. Cardenas, P.E., Vice President, Staunton Chow Engineers • Dr. Kevin Phillips, P.E. FPM Group.......... ■ Enc. NYC DEPnequest for information ■- • •

i.

.4.

..i ,------- ,, tn idO'VVesf IZ’TScreW • • . -1.. ‘ Ybii.- N^-Yoffc lOCWt ' -! I....4 • —J f NYC-WTC_OOO1521O4