Air sampling protocol document, 130 Cedar Street, Jan 2005

NYC 9/11 Public Portal Document

Air Sampling and Monitoring Protocol Site: 130 Cedar Street Prepared for Masterworks Development Amount of research information available at the Lower Manhattan Development Corporation (LMCD) website.

The objects of this air sampling and monitoring protocol are to:

• Record meteorological conditions which may affect analytical results;

• Conduct real time monitoring to gauge migration, if any, of contaminants from the site;

• Conduct air and wipe sampling for target compounds

3.0 Methodoloav

A) Monitoring meteorological variables and their significance is important in modeling air quality. A Rain Wise Weather log meteorological station will log the following variables:

a. Wind Speed, Direction and Standard Deviation of Wind Speed Direction b. Barometric Pressure c. Rainfall

B) Real Time Monitoring and/or Periodic Integrated Sampling methods will be utilized to conduct sampling for:

a) Respirable Dust (PM10) b) Total Suspended Particulates (TSPs) c) Metals (as TSPs) d) Mercury e) Asbestos ((utilizing Phase Contrast Microscopy (PCM) and Transmission Electron Microscopy (TEM)) f) Silica g) Polycyclic Aromatic Hydrocarbons (PAHs) h) Dioxins (and Furans) i) Polychlorinated Biphenyls (PCBs) .T.

C) Sampling Sites

A total of three (3) exterior, perimeter locations of the subject property will be;. selected to perform on-going monitoring during ex nc.deconstruction activities .,,t .: (i.e. façade removal). Possible sampling locations "u^de: roil

;,•, ;;;t;Oa

1) Southeast comer of the subject property at ground level. 2) Southwest comer of the subject property at ground level.

NYC-WTC 000125101