Preliminary environmental assessment report, 30 Warren Street, January 2006

NYC 9/11 Public Portal Document

Environmental Characterization Report Fiterman Hall, 30 West Broadway, New York, NY Airtek Project #05-0867 — January 10, 2006

• Providing site-specific reference data to aid in determining what air contaminant measurements will be necessary in order to verify control of offsite emissions and safe working conditions during the deconstruction project; • Providing data related to waste characterization efforts.

The study findings will assist in determining what measures and protocols may be required in support of the Fiterman Building cleaning and deconstruction plan. In particular, the results of the Study are intended to provide reference information allowing for informed decisions to be made by the project team regarding appropriate cleaning and deconstruction methods. These decisions include the development and implementation of engineering controls to contain the work zone (i.e., to ensure no exposure to the surrounding community during the cleaning and deconstruction) and appropriate methods for the disposal or recycling of materials generated by the cleaning and deconstruction activities. Using the available characterization results, DASNY/CUNY its consultants, and the selected deconstruction contractor can develop and implement appropriate deconstruction protocols and safety precautions for the cleaning and deconstruction process to ensure the health and safety of workers and the residents of the surrounding community.

4.0 Investigation Procedures and Analytical Methodologies

4.1 Site Access Monitoring

Daily area air monitoring for asbestos was conducted in accordance with ICR-56-17 and the site- specific conditions of NYSDOL-approved Variance Petition, File No. 05-0919. The variance conditions required that all analyses be conducted by Transmission Electron Microscopy (TEM). Air samples were collected from each decontamination facility clean room, within 10 feet from the termination of each negative air exhat1st air duct, within 10 feet from the entrance to each decontamination unit, and within 10 feet of the building envelope barrier. Daily air monitoring was consistent with ICR-56-17.3 requirements.

4.2 Personal Exposure Testing 9

NYC-WTC 000096575