Permit application Part II, air monitoring Jan 2006

NYC 9/11 Public Portal Document

Regulatory Submittal Part II - Environmental Community Air Monitoring Program Fiterman Hall — 30 West Broadway Airtek Project 05-0867 — January 10, 2006

Mercury:

In addition to metals monitoring for mercury particulate using Iodated Carbon Traps (ICT), real-time monitoring will be performed. The readings will be entered into an electronic format for inclusion with the daily download of sample collection data.

Real-time monitoring will be performed daily throughout the project. Mercury monitoring will be performed utilizing a Lumex RA 915+ direct read instrument.

The Lumex RA915+ will be utilized to obtain detection levels below established Site air contaminant criteria. At a minimum, mercury readings will be taken twice a shift at the fixed air monitoring locations. At the discretion of the EC and as daily Site conditions may dictate, additional mercury readings may be taken.

Organic Compounds (Dioxin/PCBs/PAHs):

Organic compounds samples will be collected at specified points along the project schedule as follows:

1. On the first day of the Background Phase, one sample of each organic compound at each community monitoring location will be collected (three total samples per location). The samples from the location with the highest particulate readings will be analyzed. 2. Organics samples will be collected weekly during the Abatement Phase and Deconstruction Phase. Samples from the location with the highest particulate readings for that day will be submitted for analysis. This will result in the processing of the samples that have the best likelihood of representing the "worst case." A total of three samples per week, one Dioxin, one PCB, one PAH will be analyzed. 3. Samples for organic compound analyses will be analyzed within fourteen days under normal laboratory analysis turn-around time

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