NYC 9/11 Public Portal Document
Part II - Environmental Community Monitoring Plan
133-135 Greenwich & 21-23 Thames Streets
Airtek Project 05-0701 — Rev 1 August 11, 2005
will be notified promptly. The community air monitoring locations will not be
moved until NYCDEP and the USEPA Region 2 office accept the change.
3.3 Abatement Work Area Monitoring
Air monitoring per the requirements of NYC DEP Title 15 will be conducted with
the exception that Transmission Electron Microscopy (TEM) will be utilized as
the analytical method for asbestos. Sample locations will be selected by the Site
Hygienist in accordance with Title 15 and based on the configuration of the
abatement containment areas. Containment area monitoring of additional
Contaminants of Potential Concern (COPCs) that are not regulated under Title 15
will be conducted voluntarily by the Owner. The COPCs to be monitored are:
Asbestos (TEM), Metals (ICP-AES) and crystalline silica (XRD).
This monitoring is detailed in Table 3 -Abatement Work Area Monitoring in
Attachment B (Work Area Monitoring) to this specification.
4.0 Demolition Phase Air Monitoring
4.1 Visible Emissions
Monitoring for visible emissions will be conducted as described above in Section
2.0 of this specification.
4.2 Community Air Monitoring
Community Air Monitoring will be conducted as detailed in Table 1— Community
Air Monitoring in Attachment A (Community Monitoring) to this specification.
Community Air Monitoring will continue through the completion of the
Demolition Phase.
Initial Community Air Monitoring locations are identified on the drawing
included in Attachment A (Community Monitoring) to this specification. If the
environmental air monitoring locations need to be changed during the demolition
phase due to site conditions, NYC DEP and USEPA Region 2 office will be
notified promptly. The community air monitoring locations will not be moved
until NYCDEP and the USEPA Region 2 office accept the change.
5.0 Interpretation of Sample Data
The Target Air Quality Levels and EPA Site Specific Trigger Levels for the Site are set
forth in Attachment A, Table 2.
The following actions will be taken if there is an exceedance of Target Air Quality Level.
If there is an exceedance of both the Target Air Quality Level and the EPA Site Specific
NYC-WTC 000134947
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