NYC 9/11 Public Portal Document
'^1 V B) Longer Term: The goal of the longer term aspects action plan are to identify potential
indicators of concern, that is, compounds which resulted from the WTC collapse and subsequent
fires that have not been evaluated in the indoor environments thus far. Several steps are needed,
since there are no widely accepted indoor air benchmarks for these compounds, and there is not
\ a good data base for understanding the “background” levels of the compounds which were in the
\ NYC urban environment prior to 9/11. Gathering theseis additional data, along with the Pilot
Building Clean Up Effort, will assist health agencies and EPA to evaluate qualitatively how the
potential contaminant compounds relate to pre-9/11 conditions and how the clean up guidance
addresses any potential concerns. This will lead finally to an assessment of whether any
additional action is needed in Lower Manhattan regarding indoor air concerns.
Timing of the Longer Term Actions: Initial Actions have been initiated by agency staffs.
Actions listed here could begin by June 1 and continue through February 2003.
1. Sampling to Determine Background Levels of Potential Contaminants
Objective: To establish a NYC specific quantitative data set which will enable a better evaluation
of pre- 9/11 conditions likely to have existed in Lower Manhattan. This will assist in
future evaluation of whether any further clean up advice or action will be necessary.
Program: EPA will sample residences and commercial buildings in areas of NYC unaffected
by WTC-related debris to
establish what may be considered pre-existing levels of potential contaminants. It is
likely that this sampling will occur north of 78* Street or whatever the appropriate
designation is based upon improbability of any impacts from the WTC collapse and fire.
This will assist EPA, ATSDR NYSDOH and NYCDOH in evaluating how the potential
contaminants from the WTC disaster relate to pre-existing conditions. NYCDOH will
obtain access agreements and prepare notifications to residents and workers. Seven
potential indicators of concern have been identified and air and debris/dust samples will
be taken.
Projected Cost: $1.3 million
Status of Requestfor FEMA mission assignment: Submitted.as revised 4/11/02. Under
consideration by FEMA.
2. Creating a Data System with Existing Information Collected by NYC from the Private Sector
on Environmental Testing Results and Clean Up Activity
[The inventory of existing test information needs to be combined with information
generated by #5 and #6 above. It is not a “longer term” action. Existing data is being
assembled and a draft web-form for indoor asbestos data is expected by the end of the
week for internal review.]
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