Scope B work plan for WTC debris removal and cleaning,

NYC 9/11 Public Portal Document

Scope of Work B

Application: A visual inspection was performed and the presence of accumulations of debris (including large or significant amounts of dust) from the collapse of the WTC was identified by EPA or designee.

In some unique circumstances, Scope B may be applied on a limited basis within a unit as determined necessary by the Monitoring Contractor in consultation with EPA. Residents ma^ be present depending on these imit specific circumstances. In cases where clean up/^as ,c0^e isolated by closing doors or by the erection of containment barriers, the resident may l)e pi^nt in the unit. In all other applications of Scope B it is assumed that residcnts will not be present. ‘

1. A site specific work plan will be prepared for reviewand approval by EPA prior to thestart of work. This work plan will include detailed procedures for the removal of dust and debris and the cleaning.

2. An ACP-7 form asbestos project notification form shall be submitted, as required by Title 15, Chapter 1 of the RCNY, directly to the NYC DEPWsbestos^Omtrol Program prior to the start of work. NYS DOL notification shall be sul^ia^^

3. At least one asbestos supervisor shall be present at each work placc (work place is defined in Title 15, Chapter 1 RCNY as the vio^^ea and thc decontamination enclosure system).

4. Personal protective equipment including disposable clothing, gloves, and respirators shall be worn during this clean-up a|t3^^m accordance withOSHA rules and regulations.

5. Waming signs shall be ppste^ at the approach to the work area.

6. A worker decontamirtation enclosure system shall be installed at the entrance to the work area. A remote decontamination enclosuresystem 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 N YCFD egress requirements.

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

8, isolation barriers shall be installed with two layers of 6-mil polyethylene sheeting and sealed

9. pressure ventilation equipment shall be installed and operated during all clean-up activities. Equipment shall run continuously until 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.

NYC-WTC_000140462