Management plan document, 30 Warren Street, January 2006

NYC 9/11 Public Portal Document

Regulatory Submittal Part I — Work Plan Fiterman Hall — 30 West Broadway, New York. New York Airtek Project 05-0867 — January 10, 2006

6.1 Operation I — Clean Zone Decontamination & Clearance

The first operation to be conducted will be the decontamination and environmental clearance testing of three areas of the first floor of the Building. As illustrated in Attachment III — Remediation Phasing Plan 1-A, these areas include Clean Zones 1, 2 & 3. Clean Zone 1 is the northeast corner of the first floor, where site offices for project management (DASNY/PCF Team/Contractor) will be established. Clean Zone 2 will include the loading dock areas where decontamination units will be located and transport loading will be conducted. At the request of the Regulators, Clean Zone 3 will be created to house the regulated waste storage areas so that these areas may be inspected by the Regulators without requiring entry to contaminated spaces. These areas will be sealed-off from the rest of the Building, gut-stripped and decontaminated, and then subjected to clearance testing as detailed in Section 7.0 below. Daily monitoring for asbestos will be conducted to verify the effectiveness of the engineering controls established to prevent re-contamination of the Clean Zones.

6.2 Operation II— Exterior Cleaning

As detailed in the Facade Characterization Report, the exterior of the building was decontaminated as a part of the NYC DEP Building Exterior Cleaning Program following 9/11/01. Limited exterior cleaning is still required at specific points noted during the characterization study, and on the lower two floors where urban background road dust has built up on the facade components. Focused exterior cleaning will be conducted by wet wiping and HEPA-vacuuming of the impacted facade components, using methods intended to prevent fugitive cleaning water. Exterior cleaning of the lower sections of the building will be conducted at the start of the project, and areas requiring scaffolding for cleaning operations will be cleaned as the scaffolding is erected. This work may overlap Operation III - the interior gut strip discussed below.

6.3 Operation III - Gut Strip

6.3.1 Building Envelope Preparation Work

The Gut-Strip will be conducted in negative air full-containment as an asbestos project according to the asbestos rules and NYC DOL Variance for the project. As detailed in the Facade Characterization Report, the facade of the building is in good condition. The interior surface of operable windows within the ribbon window system of the building will be HEPA vacuumed, wet wiped and sealed with two layers of 6-mil polyethylene sheeting, spray-glue and duct tape (NYS DOL Critical Barrier). The operable portions (frames, hinges, wells) of these windows will be cleaned during the scaffold erection (Section 7.3), and the plastic and duct tape will be removed at that time. In the "Gash Area" of the south

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