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Updated WTC cleaning and monitoring scopes of work, July 2002

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Distribution of updated statement of work documents for WTC cleaning and monitoring programs.

NYC-WTC_000138674–000138693

Folder label: “E-Mails Hotline M. Gilsenan

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NYC 9/11 Public Portal Document

Scope of Work B

Application: A visual inspection was performed and the presence ofaccumulations ofdust or debris (including large or significant amounts ofdust or debris in residential units or portions thereofsuch as windows, terraces or balconies) fi-om the collapse of the WTC was identified by EPA or designee.

Residents may be present depending on these unit specific circumstances. In cases where clean-up areas can be isolated by closing doors or by the erection ofcontainment barriers, the resident may be present in the unit. In all other applications of Scope B it is assumed that residents will not be present.

1. A site specific work plan will be prepared for review and approval by EPA prior to the start of This work plan will include detailed procedures for the removal ofdust and debris and the Cleaning, at a minimum the procedures specified for a Scope A cleaning shall be applied.

2. An ACP-7 form asbestos project notification form shall be submitted, as required by Title 15, Chapter 1 ofthe Rules ofthe City ofNew York and New York (RCNY), directly to the NYC DEP Asbestos Control Program prior to the start of y^ik, NYS DOL notification shall be submitted.

3. At least one asbestos supervisor shall be present at each workplace (Workplace is defined in Title 15, Chapter 1 RCNY as the work area and the decontamination enclosure system).

4. Personal protective equipment including disposable clothing, gloves, and respirators shall be worn during this clean-up activity.

5. Warning signs shall be at the approach to the work area.

6. A worker decontamination enclosure system shall be installed at the entrance to the work area. A remote decontamination enclosure system shall be considered when appropriate i.e. inability to comply withthe provision due to spruce limitation or other agency rules, such as for compliance with NYCFD egress requirements.

7. HVAC systems shall be shut down and locked out or isolated locally. The site specific work plan shall provide additional information on the HVAC system and proposed procedures for shutdown or isolation.

8. Isolation bamers shall be installed with two layers of6-mil polyethylene sheeting and sealed with tape.

9. Negative pressure ventilation equipment shall be installed and operated during all clean-up activities. Equipment shall run continuously until clearance air monitoring. A minimum ofone air change every 30 minutes shall be provided. When ducting to the outside is not possible, a second negative pressure ventilation unit compatible with the primary unit may be coimected in series.

NYC-WTC_000138680

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NYC-WTC_000138680Source: NYC Law Department, mirrored locally

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