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EPA review letter, 133-135 Greenwich Street

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US EPA Region 2 letter dated November 15, 2005, confirming completion of environmental review for abatement plans at 133-135 Greenwich Street.

NYC-WTC_000134132–000134414
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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 4 September 29, 2005

21-23 Thames Street:

Main Roof: a. Roof Membrane — 350 sf b. Flashing —150 sf c. Tar — 25 sf d. Coping Stone Caulk —1 sf

1 Floor Roof: a. Roof Membrane —100 sf b. Roof Flashing — 46 sf

Facade: a. Window Caulk —10 sf

Interior: a. Pipe Insulation —57 lf

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 from disturbance and/or damage during the soft-strip phase. Pipe insulation will be removed by NYC DEP Glovebag Procedures. For detailed information on the asbestos survey conducted, please refer to the Airtek Asbestos Survey Reports dated May 31, 2005 (Attachment I).

Following 211d and 3rd cleanings and the settling periods, final air testing will be conducted as detailed in "Clearance Criteria" above. Upon successful clearance air testing, the building will be turned over to the demolition contractor for conventional demolition.

7.4 Structural Framing/Masonry Facade

Due to the impossibility of removing structural framing without the of ri sk

building collapse, all structural framing, and exposed masonry facade 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 and 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:

8

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NYC-WTC_000134139Source: NYC Law Department, mirrored locally

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