Remediation report cover, 30 Warren Street, January 2006

NYC 9/11 Public Portal Document

x." Environmental Site Characterization — Facade Report (J Fiterman Hall — 30 West Broadway, New York, NY Airtek Project 05-0867 — January 10, 2006

J Protection (NYCDEP), Section I-53; the New York State Department of Labor (NYSDOL) Industrial Code, Rule 56: Asbestos Regulation, Title 15, Sections 56- 1.4 and 56-1.9(e); and the U.S. EPA National Emissions Standards for Hazardous Air Pollutants (NESHAP) for asbestos-containing building materials (ACBM). The requirement for an asbestos building survey includes the requirement that the building facade be investigated for ACBMs. The facade ACBM survey was conducted by NYS DOL Certified Asbestos Inspectors.

2.5 Lead-Based Paint Survey

Although recently renovated, Fiterman Hall was built in the 1950's. USEPA Certified Lead Inspectors conducted testing of building components throughout the structure. Testing of building components included the testing of facade components. This effort provided data in support of decisions related to building materials handling, waste characterization and waste management.

2.6 WTC COPC Impact Investigation

Contaminants of Potential Concern:

Following the WTC Event, the U.S. EPA established a committee to evaluate Contaminants of Potential Concern (CoPCs) found in WTC dust. TheICoPC Committee of the World Trade Center Indoor Air Task Force Working Group prepared the World Trade Center Indoor Environment Assessment: Selecting Contaminants of Potential Concern and Setting Health-Based Benchmarks (May 2003), which identified the compounds of concern for Lower Manhattan cleanup efforts. The WTC Dust Characterization for CoPCs, as defined by the U.S. EPA's COPC Committee, are Silica, Polycyclic Aromatic hydrocarbons (PAHs), Dioxin, Polychlorinated Biphenyls (PCBs), Heavy Metals (Barium, Beryllium, Cadmium, Chromium, Copper, Lead, Manganese, Nickel, and Zinc), and Mercury.

Surface Impact:

Airtek conducted a thorough visual inspection of the building facade, and conducted interviews with NYC DEP personnel with knowledge of the previous exterior cleaning that was conducted under the NYC DEP exterior cleaning program. As confirmation of the findings of that investigation. Airtek collected samples to determine the CoPC surface concentration at various exterior facade locations.

Interstitial Impact:

A component of the review of existing documentation included a review of drawings for potential communicating openings and interstices that could have been impacted by WTC CoPCs. In addition to the documentation review, confirmatory destructive investigations of the facade, its structure and its

components were conducted.

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