DEP asbestos project notification form and inspection report dated December 12, 2002.
NYC-WTC_000149432–000149535Folder label: “ASBESTOS”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
New York City Department of Environmental Protection
Comments on the Clearance Criteria
According to the information in the IRIS database and USEPA web site, the USEPA “estimates that breathing air containing 0.0004 f/cc during a lifetime would result in not greater than a one in ten thousand increased chance of developing cancer”. “Reference concentrations and reference doses have not been established.”
The information on limitations in the IRIS database indicates that “alterations in the unit risk invalidates and distorts their application in estimating the potential risk”. “The figure is based on a lifetime exposure and may not be appropriately applied to less than lifetime exposure situations.” The calculation to a 30-year exposure based on the information in IRIS may not be valid.
“The unit risk is based on fiber counts made by PCM and should not be applied directly to measurements made by other analytical techniques”. “The correlation between PCM fiber counts and TEM measurements is very poor.” “The correlation between PCM fiber counts and TEM fiber coimts is very uncertain and no generally applicable conversion factor exists for these two measurements”. The adopted conversion factor was based on the geometric mean from data sets that included both measurements and had a wide range of values for the conversion.
The collection of 4000 liters of air will result in clogged filters. In addition, the increased sampling time and inconvenience to unit occupants should be considered. The laboratory effort (interpreted fi-om the cost per sample increase) does not justify the increased air volume collection. Based on conversations with laboratories, the cost per sample increase would be between $15 and $25. The air sampling technician costs are typically in the range of $35 per hour and the inconvenience to the concerned citizens is not measurable.
The 3-day turnaround time is high if we are to consider the receipt of elevated levels and need for further action.
NYC-WTC_000149444
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000149537
Instructions and sections for collecting sample location data from a specific building interior.
25 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149798
Generic form or header page from the Department of Environmental Protection regarding general World Trade Center notices and requests.
28 shared non-person entities · Same agency, volume and box · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149936
Joint OSHA and Bechtel crane inspection report analyzing safety conditions at the World Trade Center site.
20 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000146129
Correspondence from NYC Corporation Counsel providing comments on excerpts of a draft EPA evaluation report regarding the WTC response.
254 shared non-person entities · 1 shared topics · similarity 0.985
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125845
Draft fact sheet from DOH and DEP addressing tenant concerns regarding asbestos fibers at 105 Duane Street.
27 shared non-person entities · similarity 0.982
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000112085
Header page identifying records related to environmental work at 20 Vesey Street.
14 shared non-person entities · similarity 0.982
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151361
A letter defending the validity of DEP and contractor data used to clear residential units at 114 Liberty Street for re-occupancy.
16 shared non-person entities · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154948
Federal agencies respond to resident concerns regarding the validity of environmental clearance data for 114 Liberty Street.
16 shared non-person entities · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125801
Cover sheet for a fax transmission from DEP regarding the 105 Duane Street site file.
17 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000097285
Summary of 94,014 asbestos samples collected and analyzed at 225 Liberty Street between September 2001 and January 2002.
12 shared non-person entities · 1 shared topics · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155002
Federal agencies respond to resident concerns regarding the validity of environmental clearance data for 114 Liberty Street.
16 shared non-person entities · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Page similarity is temporarily unavailable or this page has no indexed vector.
Machine-extracted building matches; verify each source. Buildings, never households.
Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
NYC-WTC_000148621
Memo outlining DEP activities including assessment and coordination with federal agencies for street and sidewalk cleaning.
Cited alongside this record in an Ask answer
NYC-WTC_000156442
Routing form from the Office of Emergency Management requesting urgent review and comments on a WTC site matter.
Cited alongside this record in an Ask answer
NYC-WTC_000109790
Cover page accompanying a fax transmission of asbestos fiber analysis results performed via transmission electron microscopy.
Cited alongside this record in an Ask answer
NYC-WTC_000109798
Detailed laboratory data sheet listing sample volumes and asbestos fiber counts obtained from transmission electron microscopy testing.
Cited alongside this record in an Ask answer
NYC-WTC_000109800
Cover page accompanying a fax transmission of asbestos fiber analysis results performed via transmission electron microscopy.
Cited alongside this record in an Ask answer