EPA work plan review, 133-135 and 21-23 buildings, August 2005

NYC 9/11 Public Portal Document

Part I: Work Plan — Decontamination/Deconstruction 133-135 Greenwich Street and 21-23 Thames Street Airtek Project 05-0701— Rev 2 August 10, 2005

Per the requirements of the NYCDEP, these materials will be abated last in the decontamination sequence. As such, care will be taken to protect these materials form disturbance and/or damage during the soft-strip phase. For detailed information on the asbestos survey conducted, please refer to the Airtek Asbestos Survey Reports dated May 31, 2005 (Attachment I).

7.4 Structural Framing/Masonry Facade

Due to the impossibility of removing structural framing without the risk of building collapse, all structural framing, and exposed masonry façade will be wet- wiped, HEPA vacuumed, and encapsulated with penetrating encapsulant. Prior to commencement of conventional demolition, the remaining building components (anticipated to be principally wood framing and masonry facade) will be tested by the Environmental Consultant for ACM content an RCRA characteristics, as noted in the WMP (Part IV of the submittal). These materials will be handled and disposed of as appropriate based on the test results.

8.0 Conventional Building Demolition:

8.1 Permits:

Contractor will obtain all governmental permits necessary to perform the work including, but not limited to sidewalk bridges, D.O.T., etc.

Contractor will comply with requirements of any city, state or federal agencies (including OSHA) relating to the demolition work, including the requirements of the New York City Environmental Control Board and the New York City Building Enforcement Safety Team ("BEST Squad"). Contractor will comply with all provisions of the New York City Building Code. _

8.2 Dust Suppression:

The Contractor will be responsible to take precautions to prevent fugitive dust from escaping the site. As noted in the Project HASP, the Contractor has the responsibility to monitor for visible emissions. Dust suppression engineering controls will be the responsibility of the Contractor, and may include, but not be limited to the following:

Wet suppression: The use of wa a and/or amended water Site housekeeping via vacuum'sseeping Limitation of free-fall of demolition debris Limitation of freefall during waste loading Sealed and/or covered transport

NYC-WTC 000134893