Frequently asked questions and updates regarding disaster assistance, road reopenings, and victim support funds issued in October 2001.
NYC-WTC_000148115–000148190Folder label: “Q and A FAQ”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document MAY-29-2002 21:22 U.S. EPA/DEPP 212 6373772 P.02/03
Memo To; Kathy Callahan, Director, Division of Environmental Plamung and Protection From: Mark Maddaloni, Toxicologist/Risk Coordinator Date: 2/14/02 Subject: World Trade Center (WTC) Asbestos Issues (Draft)
Cr.iiained wid m are Q & A’s that address WTC-related asbestos issues.
1. (Usp of PCM-equivalent data from Manhattan for comparison with Libby)
Issue • It has been argued that fibers less than 5 microns (um) in length may cause cancer.
Response - EPA currently utilizes the cancer potency (i.e. inlialation Slope Factor) on its consensus data base, the Integrated Risk Information System (IRIS), to determine cancer risk from asbestos. This Slope Factor is intended for use with phase contrast microscopy (PCM) fibers only (>5 um length) because the epidemiology studies that formed the basis of the dose response assessment (i.e.. Slope Factor) utilized PCM analysis. EPA recognizes, and has acted upon (as described below), the uncertainty related to asbestos risk assessment, especially the factors that contribute to its cancer potency, and is currently re-evaluating the scientific literature on asbestos. For example, EPA is prep^dng to peer review a scientific approach that assigns greater carcinogenic potential to extremely long fibers (>10 um), but this methodology continues use of 5 um as the minimum fiber length for carcinogenic potential. As part of this initiative, EPA has convened international workshops to evaluate the relationship between fiber dimension/mineralology and the full range (carcinogenic and non-carcinogenic) of asbestos- related health effects.
2. (Comparison of Libby and Lower Manhattan data)
Issue - Contamination exists in an air duct at 105 Duane St. which is three blocks outside EPA ’ ’ defined “zone of contamination.”
Response - EPA never defined either a “zone of contamination” or an exclusion zone during the response to the WTC attack. The exclusion zone definitions, which have changed over time, have been determined by die City of New York. Additionally, the City of New York has taken the
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NYC-WTC_000148133
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NYC-WTC_000147982
A project proposal outlining the timeline, methods, and justification for cleaning HVAC systems in residential units affected by World Trade Center dust.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149199
Department of Environmental Protection advisory letter dated October 25, 2001, addressed to residents of Lower Manhattan.
26 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.978
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Q&A sheet detailing procedures for assessing debris in ventilation systems and required abatement actions.
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machine-extracted · confidence unavailable · Check page ↗19 shared non-person entities · 1 shared topics · similarity 0.982
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000142730
Guidance document explaining requirements for HVAC cleaning and asbestos abatement regulations for building owners.
19 shared non-person entities · 1 shared topics · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000142741
Guidance document explaining requirements for HVAC cleaning and asbestos abatement regulations for building owners.
19 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000143952
Joint announcement of a comprehensive plan by the EPA and city partners to address indoor air quality concerns in residential units south of Canal Street.
21 shared non-person entities · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000150163
Internal memo draft addressed to the Commissioner regarding environmental compliance actions and correspondence drafts dated October 15, 2001.
12 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000142699
Q&A document advising landlords on HVAC filter changes and asbestos assessment requirements following the disaster.
19 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145345
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
31 shared non-person entities · similarity 0.978
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NYC-WTC_000147452
Internal memo providing corrections and additions to a draft Department of Health press release regarding air sampling.
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NYC-WTC_000148742
Notice instructing staff to preserve original World Trade Center documents for potential legal actions against the City.
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NYC-WTC_000142595
Informational document explaining how to identify fiberglass contamination in homes and associated health risks.
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NYC-WTC_000142598
Webpage content discussing the health hazards of fiberglass insulation and criticizing industry research practices.
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Joint announcement of a comprehensive plan by the EPA and city partners to address indoor air quality concerns in residential units south of Canal Street.
Cited alongside this record in an Ask answer