NYC 9/11 Public Portal Document
Scope of Work B
Application: A visual inspection was performed and the presence ofsignificant accumulations ofdust and/or
debris from the collapse of the WTC was identified by USEPA or designee. In some unique
circumstances, Scope B maybe applied on a limited basis within a unit as determined necessary by the
Monitoring Contractor in consultation with EPA. Residents maybe present depending on these unit
specific circumstances. In all other applications ofScope B it is assumed that residents will not be presort.
1. A site specific work plan will be prepared for review and approval by USEPA prior to the start
ofwork. This work plan will include detailed procedures for the removal ofdust and debris and
the cleaning.
2. An ACP-7 form asbestos project notification form shall be submitted directly to the NYC DEP
Asbestos Control Program prior to the start ofwork. NYS DOL notification shall be submitted.
3. At least one asbestos supervisor shall be present at each work place (work place is defined in Title
14, 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 in accordance with OSHA rules and regulations.
5. Warning signs shall be posted 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
complywith the provision due to space 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 barriers 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 airmonitoring. Aminimum 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 theprimaiy unit capacitymay be connected in
series.
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NYC-WTC_000138665
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