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

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EPA Region 2 letter regarding revised environmental work plan submission for two buildings including asbestos, health, and safety assessment components.

NYC-WTC_000134871–000135144
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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 2 August 10, 2005

7.2 Part II - Soft Strip:

The Soft-Strip will be conducted in negative air full-containment as an asbestos project. Dust suppression will be conducted according to the stringent rules and egulations overnin asbestos projects v ~, 4, <"~ All interior materials, including moveable objects, will be subject to abatement and removal, and will be bagged and disposed of as ACM waste at a minimum. Certain stainless steel kitchen fixtures and other impermeable materials may be decontaminated by HEPA-vacuum and wet wiping. Efficacy of this decontamination will be determined by the Environmental Consultant as described in the Waste Management Plan (Submittal Part IV). All ceiling systems (plaster, tiles, sheetrock, etc.), wall systems (plaster, wall board, etc.), and floor systems, (tiles, carpet, etc.) will be removed and bagged for disposal as ACM waste at a minimum. Waste characterization testing as described in the WMP (submittal Part IV) will be used to make final waste determinations. Remaining structural members will be wet-wiped, HEPA vacuumed, and encapsulated with a penetrating encapsulant. All accessible interstitial spaces will be wet-wiped, HEPA-vacuumed, and encapsulated. Operable windows will be articulated, wet wiped, HEPA-vacuumed, and encapsulated.

Following 2nd 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.

7.3 Part III - In Place ACM:

In-place ACM has been identified as follows:

133-135 Greenwich Street:

a. Roof Flashing — 35sf b. Bulkhead Tar —10sf

21-23 Thames Street:

a. Roof Membrane — 350sf b. Flashing —100sf c. Tar — 20sf d. Window Caulk — 9sf e. Coping Stone Caulk —1sf f. Pipe Insulation — 50 If

NYC-WTC 000134891

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NYC-WTC_000134891Source: NYC Law Department, mirrored locally

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