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Asbestos Project Notification Form

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NYC DEP Asbestos Project Notification form for abatement activities at a facility in the Phase 1 Decontamination Plan binder.

NYC-WTC_000127792–000127811

Folder label: “BINDER - PHASE 1 DECONTAMINATION PLAN

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NYC 9/11 Public Portal Document

Mr Rajappan Radhakrishnan — NYC DEP 21-23 Thames Street Variance Request Airtek Project 05-0701— June 9, 2005

I* Project Monitoring:

Project Monitoring: Throughout the decontamination activities, project air monitoring will be conducted in addition to the Perimeter Monitoring described above. Project Monitoring will be conducted in strict accordance with RCNY Title 15 Chapter 1, Section 1-41 to 1-45, with the exception that all sample analyses will be by TEM.

Clearance Testing: Aggressive area clearance testing for asbestos will be conducted for all work areas by TEM. Aggressive clearance testing for metals will be conducted by NIOSH 7300.

Clearance Criteria:

Clearance testing for asbestos will be acceptable when all samples for a given work area meet the 70 structures per square millimeter TEM standard. Clearance testing for metals will be acceptable when all samples meet the following criteria:

Antimony 250 ug/m3 Barium 250 ug/m3 Beryllium 1.0 ug/m3 • Cadmium 5.0 ug/m3 Chromium (III) 250 ug/m3 Copper 500 ug/m3 Lead 25 ug/m3 Manganese 100 ug/m3 Mercury 12.5 ug/m3 Nickel 50 ug/m3 Zinc 1,000 ug/m3

Exterior.

The exterior of the building was decontaminated as a part of the NYC DEP Building Exterior Cleaning Program following 9/11/01. Airtek's visual inspection of the façade indicates that it is advisable to conduct low-pressure power washing prior to initialing demolition activities. The exterior of the building will be cleaned in accordance with the NYC DEP WTC Dust/Residue Roof & Façade Cleaning Procedures (attached).

Interior:

• Phase 1— Access Facility:

NYC-WTC 000127797

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NYC-WTC_000127797Source: NYC Law Department, mirrored locally

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Asbestos Project Notification Form · Box DEP Box 52

NYC-WTC_000127779

NYC DEP Asbestos Project Notification form for abatement activities at a facility in the Phase 1 Decontamination Plan binder.

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