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HVAC cleanup proposal for residential units, Feb 2003

Machine-extracted title · confidence 95%

A project proposal outlining the timeline, methods, and justification for cleaning HVAC systems in residential units affected by World Trade Center dust.

NYC-WTC_000147982–000148113

Folder label: “EPA Indoor Air Cleanup

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Scanned page image, NYC-WTC_000148105
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NYC 9/11 Public Portal Document

Clean-up of Debris-Laden unoccupied, uncleaned Buildings Scope of Work

Application: A visual inspection was performed and visible acciunulations of debris from the collapse of the WTC was identified.

1. All work shall be performed by a NYSDOL licensed contractor with NYSDOL- and NYC DEP- certified workers.

2. An ACP-7 form asbestos project notification form shall be submitted directly to the NYCDEP Asbestos Control Program prior to the start of work. NYS DOL notification shall be submitted.

3. A third party air monitoring firm shall perform air sampling. The person who conducts sampling shall possess a valid NYS DOL certificate.

4. 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).

5. Personal protective equipment including disposable clothing, gloves, and respirators in accordance with OSHA rules and regulations.

6. Warning signs shall be posted at the approach to the work area.

7. 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 with the provision due to space limitation or other agency rules, such as for compliance with NYCFD egress requirements.

8. HVAC systems shall be shut down and locked out or isolated locally.

9. Isolation barriers shall be installed with two layers of 6-mil polyethylene sheeting and sealed with tape.

10. Negative pressure ventilation equipment shall be installed for and operated during all clean-up activities. Equipment shall run continuously imtil clearance air monitoring. A minimum of one 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 capacity may be connected in series.

11. All debris shall be misled and bagged directly. Accumulation of water is prohibited. Water misting shall be sufficient to wet the material without water accumulations. After the removal of debris accumulations all surfaces shall be wet wiped and HEPA

5 NYC-WTC_000148105

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NYC-WTC_000148105Source: NYC Law Department, mirrored locally

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